From db81b925d776103326128bf629cbdda576a223e7 Mon Sep 17 00:00:00 2001
From: sanine <sanine.not@pm.me>
Date: Sat, 16 Apr 2022 11:55:09 -0500
Subject: move 3rd-party librarys into libs/ and add built-in honeysuckle
---
libs/assimp/code/AssetLib/glTF/glTFAsset.h | 1017 +++++++++++++++
libs/assimp/code/AssetLib/glTF/glTFAsset.inl | 1316 ++++++++++++++++++++
libs/assimp/code/AssetLib/glTF/glTFAssetWriter.h | 96 ++
libs/assimp/code/AssetLib/glTF/glTFAssetWriter.inl | 716 +++++++++++
libs/assimp/code/AssetLib/glTF/glTFCommon.cpp | 117 ++
libs/assimp/code/AssetLib/glTF/glTFCommon.h | 520 ++++++++
libs/assimp/code/AssetLib/glTF/glTFExporter.cpp | 1065 ++++++++++++++++
libs/assimp/code/AssetLib/glTF/glTFExporter.h | 118 ++
libs/assimp/code/AssetLib/glTF/glTFImporter.cpp | 725 +++++++++++
libs/assimp/code/AssetLib/glTF/glTFImporter.h | 89 ++
10 files changed, 5779 insertions(+)
create mode 100644 libs/assimp/code/AssetLib/glTF/glTFAsset.h
create mode 100644 libs/assimp/code/AssetLib/glTF/glTFAsset.inl
create mode 100644 libs/assimp/code/AssetLib/glTF/glTFAssetWriter.h
create mode 100644 libs/assimp/code/AssetLib/glTF/glTFAssetWriter.inl
create mode 100644 libs/assimp/code/AssetLib/glTF/glTFCommon.cpp
create mode 100644 libs/assimp/code/AssetLib/glTF/glTFCommon.h
create mode 100644 libs/assimp/code/AssetLib/glTF/glTFExporter.cpp
create mode 100644 libs/assimp/code/AssetLib/glTF/glTFExporter.h
create mode 100644 libs/assimp/code/AssetLib/glTF/glTFImporter.cpp
create mode 100644 libs/assimp/code/AssetLib/glTF/glTFImporter.h
(limited to 'libs/assimp/code/AssetLib/glTF')
diff --git a/libs/assimp/code/AssetLib/glTF/glTFAsset.h b/libs/assimp/code/AssetLib/glTF/glTFAsset.h
new file mode 100644
index 0000000..1a42e90
--- /dev/null
+++ b/libs/assimp/code/AssetLib/glTF/glTFAsset.h
@@ -0,0 +1,1017 @@
+/*
+Open Asset Import Library (assimp)
+----------------------------------------------------------------------
+
+Copyright (c) 2006-2022, assimp team
+
+All rights reserved.
+
+Redistribution and use of this software in source and binary forms,
+with or without modification, are permitted provided that the
+following conditions are met:
+
+* Redistributions of source code must retain the above
+copyright notice, this list of conditions and the
+following disclaimer.
+
+* Redistributions in binary form must reproduce the above
+copyright notice, this list of conditions and the
+following disclaimer in the documentation and/or other
+materials provided with the distribution.
+
+* Neither the name of the assimp team, nor the names of its
+contributors may be used to endorse or promote products
+derived from this software without specific prior
+written permission of the assimp team.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+----------------------------------------------------------------------
+*/
+
+/** @file glTFAsset.h
+ * Declares a glTF class to handle gltf/glb files
+ *
+ * glTF Extensions Support:
+ * KHR_binary_glTF: full
+ * KHR_materials_common: full
+ */
+#ifndef GLTFASSET_H_INC
+#define GLTFASSET_H_INC
+
+#if !defined(ASSIMP_BUILD_NO_GLTF_IMPORTER) && !defined(ASSIMP_BUILD_NO_GLTF1_IMPORTER)
+
+#include "glTFCommon.h"
+#include <assimp/Exceptional.h>
+#include <algorithm>
+#include <list>
+#include <map>
+#include <stdexcept>
+#include <string>
+#include <vector>
+
+// clang-format off
+
+#if (__GNUC__ == 8 && __GNUC_MINOR__ >= 0)
+#pragma GCC diagnostic push
+#pragma GCC diagnostic ignored "-Wclass-memaccess"
+#endif
+
+#include <rapidjson/rapidjson.h>
+#include <rapidjson/document.h>
+#include <rapidjson/error/en.h>
+
+#if (__GNUC__ == 8 && __GNUC_MINOR__ >= 0)
+#pragma GCC diagnostic pop
+#endif
+
+#ifdef ASSIMP_API
+# include <memory>
+# include <assimp/DefaultIOSystem.h>
+# include <assimp/ByteSwapper.h>
+#else
+# include <memory>
+# define AI_SWAP4(p)
+# define ai_assert
+#endif
+
+
+#if _MSC_VER > 1500 || (defined __GNUC___)
+# define ASSIMP_GLTF_USE_UNORDERED_MULTIMAP
+# else
+# define gltf_unordered_map map
+#endif
+
+#ifdef ASSIMP_GLTF_USE_UNORDERED_MULTIMAP
+# include <unordered_map>
+# if defined(_MSC_VER) && _MSC_VER <= 1600
+# define gltf_unordered_map tr1::unordered_map
+# else
+# define gltf_unordered_map unordered_map
+# endif
+#endif
+
+// clang-format on
+
+#include "AssetLib/glTF/glTFCommon.h"
+
+namespace glTF {
+
+using glTFCommon::IOStream;
+using glTFCommon::IOSystem;
+using glTFCommon::Nullable;
+using glTFCommon::Ref;
+using glTFCommon::shared_ptr;
+
+using rapidjson::Document;
+using rapidjson::Value;
+
+class Asset;
+class AssetWriter;
+
+struct BufferView; // here due to cross-reference
+struct Texture;
+struct Light;
+struct Skin;
+
+using glTFCommon::mat4;
+using glTFCommon::vec3;
+using glTFCommon::vec4;
+
+//! Magic number for GLB files
+#define AI_GLB_MAGIC_NUMBER "glTF"
+
+// clang-format off
+#ifdef ASSIMP_API
+# include <assimp/Compiler/pushpack1.h>
+#endif
+// clang-format on
+
+//! For the KHR_binary_glTF extension (binary .glb file)
+//! 20-byte header (+ the JSON + a "body" data section)
+struct GLB_Header {
+ uint8_t magic[4]; //!< Magic number: "glTF"
+ uint32_t version; //!< Version number (always 1 as of the last update)
+ uint32_t length; //!< Total length of the Binary glTF, including header, scene, and body, in bytes
+ uint32_t sceneLength; //!< Length, in bytes, of the glTF scene
+ uint32_t sceneFormat; //!< Specifies the format of the glTF scene (see the SceneFormat enum)
+} PACK_STRUCT;
+
+// clang-format off
+#ifdef ASSIMP_API
+# include <assimp/Compiler/poppack1.h>
+#endif
+// clang-format on
+
+//! Values for the GLB_Header::sceneFormat field
+enum SceneFormat {
+ SceneFormat_JSON = 0
+};
+
+//! Values for the mesh primitive modes
+enum PrimitiveMode {
+ PrimitiveMode_POINTS = 0,
+ PrimitiveMode_LINES = 1,
+ PrimitiveMode_LINE_LOOP = 2,
+ PrimitiveMode_LINE_STRIP = 3,
+ PrimitiveMode_TRIANGLES = 4,
+ PrimitiveMode_TRIANGLE_STRIP = 5,
+ PrimitiveMode_TRIANGLE_FAN = 6
+};
+
+//! Values for the Accessor::componentType field
+enum ComponentType {
+ ComponentType_BYTE = 5120,
+ ComponentType_UNSIGNED_BYTE = 5121,
+ ComponentType_SHORT = 5122,
+ ComponentType_UNSIGNED_SHORT = 5123,
+ ComponentType_UNSIGNED_INT = 5125,
+ ComponentType_FLOAT = 5126
+};
+
+inline unsigned int ComponentTypeSize(ComponentType t) {
+ switch (t) {
+ case ComponentType_SHORT:
+ case ComponentType_UNSIGNED_SHORT:
+ return 2;
+
+ case ComponentType_UNSIGNED_INT:
+ case ComponentType_FLOAT:
+ return 4;
+
+ case ComponentType_BYTE:
+ case ComponentType_UNSIGNED_BYTE:
+ return 1;
+ default:
+ std::string err = "GLTF: Unsupported Component Type ";
+ err += std::to_string(t);
+ throw DeadlyImportError(err);
+ }
+}
+
+//! Values for the BufferView::target field
+enum BufferViewTarget {
+ BufferViewTarget_NONE = 0,
+ BufferViewTarget_ARRAY_BUFFER = 34962,
+ BufferViewTarget_ELEMENT_ARRAY_BUFFER = 34963
+};
+
+//! Values for the Sampler::magFilter field
+enum SamplerMagFilter {
+ SamplerMagFilter_Nearest = 9728,
+ SamplerMagFilter_Linear = 9729
+};
+
+//! Values for the Sampler::minFilter field
+enum SamplerMinFilter {
+ SamplerMinFilter_Nearest = 9728,
+ SamplerMinFilter_Linear = 9729,
+ SamplerMinFilter_Nearest_Mipmap_Nearest = 9984,
+ SamplerMinFilter_Linear_Mipmap_Nearest = 9985,
+ SamplerMinFilter_Nearest_Mipmap_Linear = 9986,
+ SamplerMinFilter_Linear_Mipmap_Linear = 9987
+};
+
+//! Values for the Sampler::wrapS and Sampler::wrapT field
+enum SamplerWrap {
+ SamplerWrap_Clamp_To_Edge = 33071,
+ SamplerWrap_Mirrored_Repeat = 33648,
+ SamplerWrap_Repeat = 10497
+};
+
+//! Values for the Texture::format and Texture::internalFormat fields
+enum TextureFormat {
+ TextureFormat_ALPHA = 6406,
+ TextureFormat_RGB = 6407,
+ TextureFormat_RGBA = 6408,
+ TextureFormat_LUMINANCE = 6409,
+ TextureFormat_LUMINANCE_ALPHA = 6410
+};
+
+//! Values for the Texture::target field
+enum TextureTarget {
+ TextureTarget_TEXTURE_2D = 3553
+};
+
+//! Values for the Texture::type field
+enum TextureType {
+ TextureType_UNSIGNED_BYTE = 5121,
+ TextureType_UNSIGNED_SHORT_5_6_5 = 33635,
+ TextureType_UNSIGNED_SHORT_4_4_4_4 = 32819,
+ TextureType_UNSIGNED_SHORT_5_5_5_1 = 32820
+};
+
+//! Values for the Accessor::type field (helper class)
+class AttribType {
+public:
+ enum Value { SCALAR,
+ VEC2,
+ VEC3,
+ VEC4,
+ MAT2,
+ MAT3,
+ MAT4
+ };
+
+ inline static Value FromString(const char *str) {
+ for (size_t i = 0; i < NUM_VALUES; ++i) {
+ if (strcmp(data<0>::infos[i].name, str) == 0) {
+ return static_cast<Value>(i);
+ }
+ }
+ return SCALAR;
+ }
+
+ inline static const char *ToString(Value type) {
+ return data<0>::infos[static_cast<size_t>(type)].name;
+ }
+
+ inline static unsigned int GetNumComponents(Value type) {
+ return data<0>::infos[static_cast<size_t>(type)].numComponents;
+ }
+
+private:
+ static const size_t NUM_VALUES = static_cast<size_t>(MAT4) + 1;
+ struct Info {
+ const char *name;
+ unsigned int numComponents;
+ };
+
+ template <int N>
+ struct data {
+ static const Info infos[NUM_VALUES];
+ };
+};
+
+// must match the order of the AttribTypeTraits::Value enum!
+template <int N>
+const AttribType::Info AttribType::data<N>::infos[AttribType::NUM_VALUES] = {
+ { "SCALAR", 1 },
+ { "VEC2", 2 },
+ { "VEC3", 3 },
+ { "VEC4", 4 },
+ { "MAT2", 4 },
+ { "MAT3", 9 },
+ { "MAT4", 16 }
+};
+
+//! Base class for all glTF top-level objects
+struct Object {
+ std::string id; //!< The globally unique ID used to reference this object
+ std::string name; //!< The user-defined name of this object
+
+ //! Objects marked as special are not exported (used to emulate the binary body buffer)
+ virtual bool IsSpecial() const { return false; }
+
+ Object() = default;
+ virtual ~Object() {}
+
+ //! Maps special IDs to another ID, where needed. Subclasses may override it (statically)
+ static const char *TranslateId(Asset & /*r*/, const char *id) { return id; }
+};
+
+//
+// Classes for each glTF top-level object type
+//
+
+//! A typed view into a BufferView. A BufferView contains raw binary data.
+//! An accessor provides a typed view into a BufferView or a subset of a BufferView
+//! similar to how WebGL's vertexAttribPointer() defines an attribute in a buffer.
+struct Accessor : public Object {
+ Ref<BufferView> bufferView; //!< The ID of the bufferView. (required)
+ unsigned int byteOffset; //!< The offset relative to the start of the bufferView in bytes. (required)
+ unsigned int byteStride; //!< The stride, in bytes, between attributes referenced by this accessor. (default: 0)
+ ComponentType componentType; //!< The datatype of components in the attribute. (required)
+ unsigned int count; //!< The number of attributes referenced by this accessor. (required)
+ AttribType::Value type; //!< Specifies if the attribute is a scalar, vector, or matrix. (required)
+ std::vector<double> max; //!< Maximum value of each component in this attribute.
+ std::vector<double> min; //!< Minimum value of each component in this attribute.
+
+ unsigned int GetNumComponents();
+ unsigned int GetBytesPerComponent();
+ unsigned int GetElementSize();
+
+ inline uint8_t *GetPointer();
+
+ template <class T>
+ bool ExtractData(T *&outData);
+
+ void WriteData(size_t count, const void *src_buffer, size_t src_stride);
+
+ //! Helper class to iterate the data
+ class Indexer {
+ friend struct Accessor;
+
+ // This field is reported as not used, making it protectd is the easiest way to work around it without going to the bottom of what the problem is:
+ // ../code/glTF2/glTF2Asset.h:392:19: error: private field 'accessor' is not used [-Werror,-Wunused-private-field]
+ protected:
+ Accessor &accessor;
+
+ private:
+ uint8_t *data;
+ size_t elemSize, stride;
+
+ Indexer(Accessor &acc);
+
+ public:
+ //! Accesses the i-th value as defined by the accessor
+ template <class T>
+ T GetValue(int i);
+
+ //! Accesses the i-th value as defined by the accessor
+ inline unsigned int GetUInt(int i) {
+ return GetValue<unsigned int>(i);
+ }
+
+ inline bool IsValid() const {
+ return data != 0;
+ }
+ };
+
+ inline Indexer GetIndexer() {
+ return Indexer(*this);
+ }
+
+ Accessor() = default;
+ void Read(Value &obj, Asset &r);
+};
+
+//! A buffer points to binary geometry, animation, or skins.
+struct Buffer : public Object {
+ /********************* Types *********************/
+ enum Type {
+ Type_arraybuffer,
+ Type_text
+ };
+
+ /// @brief Descriptor of encoded region in "bufferView".
+ struct SEncodedRegion {
+ const size_t Offset; ///< Offset from begin of "bufferView" to encoded region, in bytes.
+ const size_t EncodedData_Length; ///< Size of encoded region, in bytes.
+ uint8_t *const DecodedData; ///< Cached encoded data.
+ const size_t DecodedData_Length; ///< Size of decoded region, in bytes.
+ const std::string ID; ///< ID of the region.
+
+ /// @brief Constructor.
+ /// \param [in] pOffset - offset from begin of "bufferView" to encoded region, in bytes.
+ /// \param [in] pEncodedData_Length - size of encoded region, in bytes.
+ /// \param [in] pDecodedData - pointer to decoded data array.
+ /// \param [in] pDecodedData_Length - size of encoded region, in bytes.
+ /// \param [in] pID - ID of the region.
+ SEncodedRegion(const size_t pOffset, const size_t pEncodedData_Length, uint8_t *pDecodedData, const size_t pDecodedData_Length, const std::string &pID) :
+ Offset(pOffset), EncodedData_Length(pEncodedData_Length), DecodedData(pDecodedData), DecodedData_Length(pDecodedData_Length), ID(pID) {}
+
+ /// Destructor.
+ ~SEncodedRegion() { delete[] DecodedData; }
+ };
+
+ /******************* Variables *******************/
+
+ size_t byteLength; //!< The length of the buffer in bytes. (default: 0)
+
+ Type type;
+
+ /// \var EncodedRegion_Current
+ /// Pointer to currently active encoded region.
+ /// Why not decoding all regions at once and not to set one buffer with decoded data?
+ /// Yes, why not? Even "accessor" point to decoded data. I mean that fields "byteOffset", "byteStride" and "count" has values which describes decoded
+ /// data array. But only in range of mesh while is active parameters from "compressedData". For another mesh accessors point to decoded data too. But
+ /// offset is counted for another regions is encoded.
+ /// Example. You have two meshes. For every of it you have 4 bytes of data. That data compressed to 2 bytes. So, you have buffer with encoded data:
+ /// M1_E0, M1_E1, M2_E0, M2_E1.
+ /// After decoding you'll get:
+ /// M1_D0, M1_D1, M1_D2, M1_D3, M2_D0, M2_D1, M2_D2, M2_D3.
+ /// "accessors" must to use values that point to decoded data - obviously. So, you'll expect "accessors" like
+ /// "accessor_0" : { byteOffset: 0, byteLength: 4}, "accessor_1" : { byteOffset: 4, byteLength: 4}
+ /// but in real life you'll get:
+ /// "accessor_0" : { byteOffset: 0, byteLength: 4}, "accessor_1" : { byteOffset: 2, byteLength: 4}
+ /// Yes, accessor of next mesh has offset and length which mean: current mesh data is decoded, all other data is encoded.
+ /// And when before you start to read data of current mesh (with encoded data ofcourse) you must decode region of "bufferView", after read finished
+ /// delete encoding mark. And after that you can repeat process: decode data of mesh, read, delete decoded data.
+ ///
+ /// Remark. Encoding all data at once is good in world with computers which do not has RAM limitation. So, you must use step by step encoding in
+ /// exporter and importer. And, thanks to such way, there is no need to load whole file into memory.
+ SEncodedRegion *EncodedRegion_Current;
+
+private:
+ shared_ptr<uint8_t> mData; //!< Pointer to the data
+ bool mIsSpecial; //!< Set to true for special cases (e.g. the body buffer)
+ size_t capacity = 0; //!< The capacity of the buffer in bytes. (default: 0)
+ /// \var EncodedRegion_List
+ /// List of encoded regions.
+ std::list<SEncodedRegion *> EncodedRegion_List;
+
+ /******************* Functions *******************/
+
+public:
+ Buffer();
+ ~Buffer();
+
+ void Read(Value &obj, Asset &r);
+
+ bool LoadFromStream(IOStream &stream, size_t length = 0, size_t baseOffset = 0);
+
+ /// Mark region of "bufferView" as encoded. When data is request from such region then "bufferView" use decoded data.
+ /// \param [in] pOffset - offset from begin of "bufferView" to encoded region, in bytes.
+ /// \param [in] pEncodedData_Length - size of encoded region, in bytes.
+ /// \param [in] pDecodedData - pointer to decoded data array.
+ /// \param [in] pDecodedData_Length - size of encoded region, in bytes.
+ /// \param [in] pID - ID of the region.
+ void EncodedRegion_Mark(const size_t pOffset, const size_t pEncodedData_Length, uint8_t *pDecodedData, const size_t pDecodedData_Length, const std::string &pID);
+
+ /// Select current encoded region by ID. \sa EncodedRegion_Current.
+ /// \param [in] pID - ID of the region.
+ void EncodedRegion_SetCurrent(const std::string &pID);
+
+ /// Replace part of buffer data. Pay attention that function work with original array of data (\ref mData) not with encoded regions.
+ /// \param [in] pBufferData_Offset - index of first element in buffer from which new data will be placed.
+ /// \param [in] pBufferData_Count - count of bytes in buffer which will be replaced.
+ /// \param [in] pReplace_Data - pointer to array with new data for buffer.
+ /// \param [in] pReplace_Count - count of bytes in new data.
+ /// \return true - if successfully replaced, false if input arguments is out of range.
+ bool ReplaceData(const size_t pBufferData_Offset, const size_t pBufferData_Count, const uint8_t *pReplace_Data, const size_t pReplace_Count);
+
+ size_t AppendData(uint8_t *data, size_t length);
+ void Grow(size_t amount);
+
+ uint8_t *GetPointer() { return mData.get(); }
+
+ void MarkAsSpecial() { mIsSpecial = true; }
+
+ bool IsSpecial() const { return mIsSpecial; }
+
+ std::string GetURI() { return std::string(this->id) + ".bin"; }
+
+ static const char *TranslateId(Asset &r, const char *id);
+};
+
+//! A view into a buffer generally representing a subset of the buffer.
+struct BufferView : public Object {
+ Ref<Buffer> buffer; //! The ID of the buffer. (required)
+ size_t byteOffset; //! The offset into the buffer in bytes. (required)
+ size_t byteLength; //! The length of the bufferView in bytes. (default: 0)
+
+ BufferViewTarget target; //! The target that the WebGL buffer should be bound to.
+
+ void Read(Value &obj, Asset &r);
+};
+
+struct Camera : public Object {
+ enum Type {
+ Perspective,
+ Orthographic
+ };
+
+ Type type;
+
+ union {
+ struct {
+ float aspectRatio; //!<The floating - point aspect ratio of the field of view. (0 = undefined = use the canvas one)
+ float yfov; //!<The floating - point vertical field of view in radians. (required)
+ float zfar; //!<The floating - point distance to the far clipping plane. (required)
+ float znear; //!< The floating - point distance to the near clipping plane. (required)
+ } perspective;
+
+ struct {
+ float xmag; //! The floating-point horizontal magnification of the view. (required)
+ float ymag; //! The floating-point vertical magnification of the view. (required)
+ float zfar; //! The floating-point distance to the far clipping plane. (required)
+ float znear; //! The floating-point distance to the near clipping plane. (required)
+ } ortographic;
+ };
+
+ Camera() = default;
+ void Read(Value &obj, Asset &r);
+};
+
+//! Image data used to create a texture.
+struct Image : public Object {
+ std::string uri; //! The uri of the image, that can be a file path, a data URI, etc.. (required)
+ Ref<BufferView> bufferView;
+ std::string mimeType;
+ int width, height;
+
+public:
+ Image();
+ void Read(Value &obj, Asset &r);
+ inline bool HasData() const { return mDataLength > 0; }
+ inline size_t GetDataLength() const { return mDataLength; }
+ inline const uint8_t *GetData() const { return mData.get(); }
+ inline uint8_t *StealData();
+ inline void SetData(uint8_t *data, size_t length, Asset &r);
+
+private:
+ std::unique_ptr<uint8_t[]> mData;
+ size_t mDataLength;
+};
+
+//! Holds a material property that can be a texture or a color
+struct TexProperty {
+ Ref<Texture> texture;
+ vec4 color;
+};
+
+//! The material appearance of a primitive.
+struct Material : public Object {
+ //Ref<Sampler> source; //!< The ID of the technique.
+ //std::gltf_unordered_map<std::string, std::string> values; //!< A dictionary object of parameter values.
+
+ //! Techniques defined by KHR_materials_common
+ enum Technique {
+ Technique_undefined = 0,
+ Technique_BLINN,
+ Technique_PHONG,
+ Technique_LAMBERT,
+ Technique_CONSTANT
+ };
+
+ TexProperty ambient;
+ TexProperty diffuse;
+ TexProperty specular;
+ TexProperty emission;
+
+ bool doubleSided;
+ bool transparent;
+ float transparency;
+ float shininess;
+
+ Technique technique;
+
+ Material() { SetDefaults(); }
+ void Read(Value &obj, Asset &r);
+ void SetDefaults();
+};
+
+//! A set of primitives to be rendered. A node can contain one or more meshes. A node's transform places the mesh in the scene.
+struct Mesh : public Object {
+ typedef std::vector<Ref<Accessor>> AccessorList;
+
+ struct Primitive {
+ PrimitiveMode mode;
+
+ struct Attributes {
+ AccessorList position, normal, texcoord, color, joint, jointmatrix, weight;
+ } attributes;
+
+ Ref<Accessor> indices;
+
+ Ref<Material> material;
+ };
+
+ /// \struct SExtension
+ /// Extension used for mesh.
+ struct SExtension {
+ /// \enum EType
+ /// Type of extension.
+ enum EType {
+#ifdef ASSIMP_IMPORTER_GLTF_USE_OPEN3DGC
+ Compression_Open3DGC, ///< Compression of mesh data using Open3DGC algorithm.
+#endif
+
+ Unknown
+ };
+
+ EType Type; ///< Type of extension.
+
+ /// \fn SExtension
+ /// Constructor.
+ /// \param [in] pType - type of extension.
+ SExtension(const EType pType) :
+ Type(pType) {}
+
+ virtual ~SExtension() {
+ // empty
+ }
+ };
+
+#ifdef ASSIMP_IMPORTER_GLTF_USE_OPEN3DGC
+
+ /// \struct SCompression_Open3DGC
+ /// Compression of mesh data using Open3DGC algorithm.
+ struct SCompression_Open3DGC : public SExtension {
+ using SExtension::Type;
+
+ std::string Buffer; ///< ID of "buffer" used for storing compressed data.
+ size_t Offset; ///< Offset in "bufferView" where compressed data are stored.
+ size_t Count; ///< Count of elements in compressed data. Is always equivalent to size in bytes: look comments for "Type" and "Component_Type".
+ bool Binary; ///< If true then "binary" mode is used for coding, if false - "ascii" mode.
+ size_t IndicesCount; ///< Count of indices in mesh.
+ size_t VerticesCount; ///< Count of vertices in mesh.
+ // AttribType::Value Type;///< Is always "SCALAR".
+ // ComponentType Component_Type;///< Is always "ComponentType_UNSIGNED_BYTE" (5121).
+
+ /// \fn SCompression_Open3DGC
+ /// Constructor.
+ SCompression_Open3DGC() :
+ SExtension(Compression_Open3DGC) {
+ // empty
+ }
+
+ virtual ~SCompression_Open3DGC() {
+ // empty
+ }
+ };
+#endif
+
+ std::vector<Primitive> primitives;
+ std::list<SExtension *> Extension; ///< List of extensions used in mesh.
+
+ Mesh() {}
+
+ /// Destructor.
+ ~Mesh() {
+ for (std::list<SExtension *>::iterator it = Extension.begin(), it_end = Extension.end(); it != it_end; it++) {
+ delete *it;
+ };
+ }
+
+ /// @brief Get mesh data from JSON-object and place them to root asset.
+ /// \param [in] pJSON_Object - reference to pJSON-object from which data are read.
+ /// \param [out] pAsset_Root - reference to root asset where data will be stored.
+ void Read(Value &pJSON_Object, Asset &pAsset_Root);
+
+#ifdef ASSIMP_IMPORTER_GLTF_USE_OPEN3DGC
+ /// @brief Decode part of "buffer" which encoded with Open3DGC algorithm.
+ /// \param [in] pCompression_Open3DGC - reference to structure which describe encoded region.
+ /// \param [out] pAsset_Root - reference to root assed where data will be stored.
+ void Decode_O3DGC(const SCompression_Open3DGC &pCompression_Open3DGC, Asset &pAsset_Root);
+#endif
+};
+
+struct Node : public Object {
+ std::vector<Ref<Node>> children;
+ std::vector<Ref<Mesh>> meshes;
+
+ Nullable<mat4> matrix;
+ Nullable<vec3> translation;
+ Nullable<vec4> rotation;
+ Nullable<vec3> scale;
+
+ Ref<Camera> camera;
+ Ref<Light> light;
+
+ std::vector<Ref<Node>> skeletons; //!< The ID of skeleton nodes. Each of which is the root of a node hierarchy.
+ Ref<Skin> skin; //!< The ID of the skin referenced by this node.
+ std::string jointName; //!< Name used when this node is a joint in a skin.
+
+ Ref<Node> parent; //!< This is not part of the glTF specification. Used as a helper.
+
+ Node() {}
+ void Read(Value &obj, Asset &r);
+};
+
+struct Program : public Object {
+ Program() {}
+ void Read(Value &obj, Asset &r);
+};
+
+struct Sampler : public Object {
+ SamplerMagFilter magFilter; //!< The texture magnification filter. (required)
+ SamplerMinFilter minFilter; //!< The texture minification filter. (required)
+ SamplerWrap wrapS; //!< The texture wrapping in the S direction. (required)
+ SamplerWrap wrapT; //!< The texture wrapping in the T direction. (required)
+
+ Sampler() = default;
+ void Read(Value &obj, Asset &r);
+ void SetDefaults();
+};
+
+struct Scene : public Object {
+ std::vector<Ref<Node>> nodes;
+
+ Scene() = default;
+ void Read(Value &obj, Asset &r);
+};
+
+struct Shader : public Object {
+ Shader() = default;
+ void Read(Value &obj, Asset &r);
+};
+
+struct Skin : public Object {
+ Nullable<mat4> bindShapeMatrix; //!< Floating-point 4x4 transformation matrix stored in column-major order.
+ Ref<Accessor> inverseBindMatrices; //!< The ID of the accessor containing the floating-point 4x4 inverse-bind matrices.
+ std::vector<Ref<Node>> jointNames; //!< Joint names of the joints (nodes with a jointName property) in this skin.
+ std::string name; //!< The user-defined name of this object.
+
+ Skin() = default;
+ void Read(Value &obj, Asset &r);
+};
+
+struct Technique : public Object {
+ struct Parameters {
+ };
+
+ struct States {
+ };
+
+ struct Functions {
+ };
+
+ Technique() = default;
+ void Read(Value &obj, Asset &r);
+};
+
+//! A texture and its sampler.
+struct Texture : public Object {
+ Ref<Sampler> sampler; //!< The ID of the sampler used by this texture. (required)
+ Ref<Image> source; //!< The ID of the image used by this texture. (required)
+
+ Texture() = default;
+ void Read(Value &obj, Asset &r);
+};
+
+//! A light (from KHR_materials_common extension)
+struct Light : public Object {
+ enum Type {
+ Type_undefined,
+ Type_ambient,
+ Type_directional,
+ Type_point,
+ Type_spot
+ };
+
+ Type type;
+ vec4 color;
+ float distance;
+ float constantAttenuation;
+ float linearAttenuation;
+ float quadraticAttenuation;
+ float falloffAngle;
+ float falloffExponent;
+
+ Light() = default;
+ void Read(Value &obj, Asset &r);
+ void SetDefaults();
+};
+
+struct Animation : public Object {
+ struct AnimSampler {
+ std::string id; //!< The ID of this sampler.
+ std::string input; //!< The ID of a parameter in this animation to use as key-frame input.
+ std::string interpolation; //!< Type of interpolation algorithm to use between key-frames.
+ std::string output; //!< The ID of a parameter in this animation to use as key-frame output.
+ };
+
+ struct AnimChannel {
+ std::string sampler; //!< The ID of one sampler present in the containing animation's samplers property.
+
+ struct AnimTarget {
+ Ref<Node> id; //!< The ID of the node to animate.
+ std::string path; //!< The name of property of the node to animate ("translation", "rotation", or "scale").
+ } target;
+ };
+
+ struct AnimParameters {
+ Ref<Accessor> TIME; //!< Accessor reference to a buffer storing a array of floating point scalar values.
+ Ref<Accessor> rotation; //!< Accessor reference to a buffer storing a array of four-component floating-point vectors.
+ Ref<Accessor> scale; //!< Accessor reference to a buffer storing a array of three-component floating-point vectors.
+ Ref<Accessor> translation; //!< Accessor reference to a buffer storing a array of three-component floating-point vectors.
+ };
+
+ std::vector<AnimChannel> Channels; //!< Connect the output values of the key-frame animation to a specific node in the hierarchy.
+ AnimParameters Parameters; //!< The samplers that interpolate between the key-frames.
+ std::vector<AnimSampler> Samplers; //!< The parameterized inputs representing the key-frame data.
+
+ Animation() = default;
+ void Read(Value &obj, Asset &r);
+};
+
+//! Base class for LazyDict that acts as an interface
+class LazyDictBase {
+public:
+ virtual ~LazyDictBase() {}
+
+ virtual void AttachToDocument(Document &doc) = 0;
+ virtual void DetachFromDocument() = 0;
+
+#if !defined(ASSIMP_BUILD_NO_EXPORT)
+ virtual void WriteObjects(AssetWriter &writer) = 0;
+#endif
+};
+
+template <class T>
+class LazyDict;
+
+//! (Implemented in glTFAssetWriter.h)
+template <class T>
+void WriteLazyDict(LazyDict<T> &d, AssetWriter &w);
+
+//! Manages lazy loading of the glTF top-level objects, and keeps a reference to them by ID
+//! It is the owner the loaded objects, so when it is destroyed it also deletes them
+template <class T>
+class LazyDict : public LazyDictBase {
+ friend class Asset;
+ friend class AssetWriter;
+
+ typedef typename std::gltf_unordered_map<std::string, unsigned int> Dict;
+
+ std::vector<T *> mObjs; //! The read objects
+ Dict mObjsById; //! The read objects accessible by id
+ const char *mDictId; //! ID of the dictionary object
+ const char *mExtId; //! ID of the extension defining the dictionary
+ Value *mDict; //! JSON dictionary object
+ Asset &mAsset; //! The asset instance
+
+ void AttachToDocument(Document &doc);
+ void DetachFromDocument();
+
+#if !defined(ASSIMP_BUILD_NO_EXPORT)
+ void WriteObjects(AssetWriter &writer) { WriteLazyDict<T>(*this, writer); }
+#endif
+
+ Ref<T> Add(T *obj);
+
+public:
+ LazyDict(Asset &asset, const char *dictId, const char *extId = 0);
+ ~LazyDict();
+
+ Ref<T> Get(const char *id);
+ Ref<T> Get(unsigned int i);
+ Ref<T> Get(const std::string &pID) { return Get(pID.c_str()); }
+
+ Ref<T> Create(const char *id);
+ Ref<T> Create(const std::string &id) { return Create(id.c_str()); }
+
+ inline unsigned int Size() const { return unsigned(mObjs.size()); }
+
+ inline T &operator[](size_t i) { return *mObjs[i]; }
+};
+
+struct AssetMetadata {
+ std::string copyright; //!< A copyright message suitable for display to credit the content creator.
+ std::string generator; //!< Tool that generated this glTF model.Useful for debugging.
+ bool premultipliedAlpha; //!< Specifies if the shaders were generated with premultiplied alpha. (default: false)
+
+ struct {
+ std::string api; //!< Specifies the target rendering API (default: "WebGL")
+ std::string version; //!< Specifies the target rendering API (default: "1.0.3")
+ } profile; //!< Specifies the target rendering API and version, e.g., WebGL 1.0.3. (default: {})
+
+ std::string version; //!< The glTF format version (should be 1.0)
+
+ void Read(Document &doc);
+
+ AssetMetadata() :
+ premultipliedAlpha(false), version() {
+ }
+};
+
+//
+// glTF Asset class
+//
+
+//! Root object for a glTF asset
+class Asset {
+ using IdMap = std::gltf_unordered_map<std::string, int>;
+
+ template <class T>
+ friend class LazyDict;
+ friend struct Buffer; // To access OpenFile
+ friend class AssetWriter;
+
+private:
+ IOSystem *mIOSystem;
+
+ std::string mCurrentAssetDir;
+
+ size_t mSceneLength;
+ size_t mBodyOffset, mBodyLength;
+
+ std::vector<LazyDictBase *> mDicts;
+
+ IdMap mUsedIds;
+
+ Ref<Buffer> mBodyBuffer;
+
+ Asset(Asset &);
+ Asset &operator=(const Asset &);
+
+public:
+ //! Keeps info about the enabled extensions
+ struct Extensions {
+ bool KHR_binary_glTF;
+ bool KHR_materials_common;
+
+ } extensionsUsed;
+
+ AssetMetadata asset;
+
+ // Dictionaries for each type of object
+
+ LazyDict<Accessor> accessors;
+ LazyDict<Animation> animations;
+ LazyDict<Buffer> buffers;
+ LazyDict<BufferView> bufferViews;
+ LazyDict<Camera> cameras;
+ LazyDict<Image> images;
+ LazyDict<Material> materials;
+ LazyDict<Mesh> meshes;
+ LazyDict<Node> nodes;
+ LazyDict<Sampler> samplers;
+ LazyDict<Scene> scenes;
+ LazyDict<Skin> skins;
+ LazyDict<Texture> textures;
+
+ LazyDict<Light> lights; // KHR_materials_common ext
+
+ Ref<Scene> scene;
+
+public:
+ Asset(IOSystem *io = 0) :
+ mIOSystem(io),
+ asset(),
+ accessors(*this, "accessors"),
+ animations(*this, "animations"),
+ buffers(*this, "buffers"),
+ bufferViews(*this, "bufferViews"),
+ cameras(*this, "cameras"),
+ images(*this, "images"),
+ materials(*this, "materials"),
+ meshes(*this, "meshes"),
+ nodes(*this, "nodes"),
+ samplers(*this, "samplers"),
+ scenes(*this, "scenes"),
+ skins(*this, "skins"),
+ textures(*this, "textures"),
+ lights(*this, "lights", "KHR_materials_common") {
+ memset(&extensionsUsed, 0, sizeof(extensionsUsed));
+ }
+
+ //! Main function
+ void Load(const std::string &file, bool isBinary = false);
+
+ //! Enables the "KHR_binary_glTF" extension on the asset
+ void SetAsBinary();
+
+ //! Search for an available name, starting from the given strings
+ std::string FindUniqueID(const std::string &str, const char *suffix);
+
+ Ref<Buffer> GetBodyBuffer() { return mBodyBuffer; }
+
+private:
+ void ReadBinaryHeader(IOStream &stream);
+
+ void ReadExtensionsUsed(Document &doc);
+
+ IOStream *OpenFile(const std::string &path, const char *mode, bool absolute = false);
+};
+
+} // namespace glTF
+
+// Include the implementation of the methods
+#include "glTFAsset.inl"
+
+#endif // ASSIMP_BUILD_NO_GLTF_IMPORTER
+
+#endif // GLTFASSET_H_INC
diff --git a/libs/assimp/code/AssetLib/glTF/glTFAsset.inl b/libs/assimp/code/AssetLib/glTF/glTFAsset.inl
new file mode 100644
index 0000000..2b76a30
--- /dev/null
+++ b/libs/assimp/code/AssetLib/glTF/glTFAsset.inl
@@ -0,0 +1,1316 @@
+/*
+Open Asset Import Library (assimp)
+----------------------------------------------------------------------
+
+Copyright (c) 2006-2022, assimp team
+
+All rights reserved.
+
+Redistribution and use of this software in source and binary forms,
+with or without modification, are permitted provided that the
+following conditions are met:
+
+* Redistributions of source code must retain the above
+copyright notice, this list of conditions and the
+following disclaimer.
+
+* Redistributions in binary form must reproduce the above
+copyright notice, this list of conditions and the
+following disclaimer in the documentation and/or other
+materials provided with the distribution.
+
+* Neither the name of the assimp team, nor the names of its
+contributors may be used to endorse or promote products
+derived from this software without specific prior
+written permission of the assimp team.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+----------------------------------------------------------------------
+*/
+
+#include <assimp/MemoryIOWrapper.h>
+#include <assimp/StringUtils.h>
+#include <iomanip>
+
+// Header files, Assimp
+#include <assimp/DefaultLogger.hpp>
+#include <assimp/Base64.hpp>
+
+#ifdef ASSIMP_IMPORTER_GLTF_USE_OPEN3DGC
+// Header files, Open3DGC.
+#include <Open3DGC/o3dgcSC3DMCDecoder.h>
+#endif
+
+using namespace Assimp;
+using namespace glTFCommon;
+
+namespace glTF {
+
+#if _MSC_VER
+#pragma warning(push)
+#pragma warning(disable : 4706)
+#endif // _MSC_VER
+
+//
+// LazyDict methods
+//
+
+template <class T>
+inline LazyDict<T>::LazyDict(Asset &asset, const char *dictId, const char *extId) :
+ mDictId(dictId), mExtId(extId), mDict(0), mAsset(asset) {
+ asset.mDicts.push_back(this); // register to the list of dictionaries
+}
+
+template <class T>
+inline LazyDict<T>::~LazyDict() {
+ for (size_t i = 0; i < mObjs.size(); ++i) {
+ delete mObjs[i];
+ }
+}
+
+template <class T>
+inline void LazyDict<T>::AttachToDocument(Document &doc) {
+ Value *container = 0;
+
+ if (mExtId) {
+ if (Value *exts = FindObject(doc, "extensions")) {
+ container = FindObject(*exts, mExtId);
+ }
+ } else {
+ container = &doc;
+ }
+
+ if (container) {
+ mDict = FindObject(*container, mDictId);
+ }
+}
+
+template <class T>
+inline void LazyDict<T>::DetachFromDocument() {
+ mDict = 0;
+}
+
+template <class T>
+Ref<T> LazyDict<T>::Get(unsigned int i) {
+ return Ref<T>(mObjs, i);
+}
+
+template <class T>
+Ref<T> LazyDict<T>::Get(const char *id) {
+ id = T::TranslateId(mAsset, id);
+
+ typename Dict::iterator it = mObjsById.find(id);
+ if (it != mObjsById.end()) { // already created?
+ return Ref<T>(mObjs, it->second);
+ }
+
+ // read it from the JSON object
+ if (!mDict) {
+ throw DeadlyImportError("GLTF: Missing section \"", mDictId, "\"");
+ }
+
+ Value::MemberIterator obj = mDict->FindMember(id);
+ if (obj == mDict->MemberEnd()) {
+ throw DeadlyImportError("GLTF: Missing object with id \"", id, "\" in \"", mDictId, "\"");
+ }
+ if (!obj->value.IsObject()) {
+ throw DeadlyImportError("GLTF: Object with id \"", id, "\" is not a JSON object");
+ }
+
+ // create an instance of the given type
+ T *inst = new T();
+ inst->id = id;
+ ReadMember(obj->value, "name", inst->name);
+ inst->Read(obj->value, mAsset);
+ return Add(inst);
+}
+
+template <class T>
+Ref<T> LazyDict<T>::Add(T *obj) {
+ unsigned int idx = unsigned(mObjs.size());
+ mObjs.push_back(obj);
+ mObjsById[obj->id] = idx;
+ mAsset.mUsedIds[obj->id] = true;
+ return Ref<T>(mObjs, idx);
+}
+
+template <class T>
+Ref<T> LazyDict<T>::Create(const char *id) {
+ Asset::IdMap::iterator it = mAsset.mUsedIds.find(id);
+ if (it != mAsset.mUsedIds.end()) {
+ throw DeadlyImportError("GLTF: two objects with the same ID exist");
+ }
+ T *inst = new T();
+ inst->id = id;
+ return Add(inst);
+}
+
+//
+// glTF dictionary objects methods
+//
+
+inline Buffer::Buffer() :
+ byteLength(0), type(Type_arraybuffer), EncodedRegion_Current(nullptr), mIsSpecial(false) {}
+
+inline Buffer::~Buffer() {
+ for (SEncodedRegion *reg : EncodedRegion_List)
+ delete reg;
+}
+
+inline const char *Buffer::TranslateId(Asset &r, const char *id) {
+ // Compatibility with old spec
+ if (r.extensionsUsed.KHR_binary_glTF && strcmp(id, "KHR_binary_glTF") == 0) {
+ return "binary_glTF";
+ }
+
+ return id;
+}
+
+inline void Buffer::Read(Value &obj, Asset &r) {
+ size_t statedLength = MemberOrDefault<size_t>(obj, "byteLength", 0);
+ byteLength = statedLength;
+
+ Value *it = FindString(obj, "uri");
+ if (!it) {
+ if (statedLength > 0) {
+ throw DeadlyImportError("GLTF: buffer with non-zero length missing the \"uri\" attribute");
+ }
+ return;
+ }
+
+ const char *uri = it->GetString();
+
+ glTFCommon::Util::DataURI dataURI;
+ if (ParseDataURI(uri, it->GetStringLength(), dataURI)) {
+ if (dataURI.base64) {
+ uint8_t *data = 0;
+ this->byteLength = Base64::Decode(dataURI.data, dataURI.dataLength, data);
+ this->mData.reset(data, std::default_delete<uint8_t[]>());
+
+ if (statedLength > 0 && this->byteLength != statedLength) {
+ throw DeadlyImportError("GLTF: buffer \"", id, "\", expected ", ai_to_string(statedLength),
+ " bytes, but found ", ai_to_string(dataURI.dataLength));
+ }
+ } else { // assume raw data
+ if (statedLength != dataURI.dataLength) {
+ throw DeadlyImportError("GLTF: buffer \"", id, "\", expected ", ai_to_string(statedLength),
+ " bytes, but found ", ai_to_string(dataURI.dataLength));
+ }
+
+ this->mData.reset(new uint8_t[dataURI.dataLength], std::default_delete<uint8_t[]>());
+ memcpy(this->mData.get(), dataURI.data, dataURI.dataLength);
+ }
+ } else { // Local file
+ if (byteLength > 0) {
+ std::string dir = !r.mCurrentAssetDir.empty() ? (
+ r.mCurrentAssetDir.back() == '/' ?
+ r.mCurrentAssetDir :
+ r.mCurrentAssetDir + '/') :
+ "";
+
+ IOStream *file = r.OpenFile(dir + uri, "rb");
+ if (file) {
+ bool ok = LoadFromStream(*file, byteLength);
+ delete file;
+
+ if (!ok)
+ throw DeadlyImportError("GLTF: error while reading referenced file \"", uri, "\"");
+ } else {
+ throw DeadlyImportError("GLTF: could not open referenced file \"", uri, "\"");
+ }
+ }
+ }
+}
+
+inline bool Buffer::LoadFromStream(IOStream &stream, size_t length, size_t baseOffset) {
+ byteLength = length ? length : stream.FileSize();
+
+ if (baseOffset) {
+ stream.Seek(baseOffset, aiOrigin_SET);
+ }
+
+ mData.reset(new uint8_t[byteLength], std::default_delete<uint8_t[]>());
+
+ if (stream.Read(mData.get(), byteLength, 1) != 1) {
+ return false;
+ }
+ return true;
+}
+
+inline void Buffer::EncodedRegion_Mark(const size_t pOffset, const size_t pEncodedData_Length, uint8_t *pDecodedData, const size_t pDecodedData_Length, const std::string &pID) {
+ // Check pointer to data
+ if (pDecodedData == nullptr) throw DeadlyImportError("GLTF: for marking encoded region pointer to decoded data must be provided.");
+
+ // Check offset
+ if (pOffset > byteLength) {
+ const uint8_t val_size = 32;
+
+ char val[val_size];
+
+ ai_snprintf(val, val_size, AI_SIZEFMT, pOffset);
+ throw DeadlyImportError("GLTF: incorrect offset value (", val, ") for marking encoded region.");
+ }
+
+ // Check length
+ if ((pOffset + pEncodedData_Length) > byteLength) {
+ const uint8_t val_size = 64;
+
+ char val[val_size];
+
+ ai_snprintf(val, val_size, AI_SIZEFMT "/" AI_SIZEFMT, pOffset, pEncodedData_Length);
+ throw DeadlyImportError("GLTF: encoded region with offset/length (", val, ") is out of range.");
+ }
+
+ // Add new region
+ EncodedRegion_List.push_back(new SEncodedRegion(pOffset, pEncodedData_Length, pDecodedData, pDecodedData_Length, pID));
+ // And set new value for "byteLength"
+ byteLength += (pDecodedData_Length - pEncodedData_Length);
+}
+
+inline void Buffer::EncodedRegion_SetCurrent(const std::string &pID) {
+ if ((EncodedRegion_Current != nullptr) && (EncodedRegion_Current->ID == pID)) return;
+
+ for (SEncodedRegion *reg : EncodedRegion_List) {
+ if (reg->ID == pID) {
+ EncodedRegion_Current = reg;
+
+ return;
+ }
+ }
+
+ throw DeadlyImportError("GLTF: EncodedRegion with ID: \"", pID, "\" not found.");
+}
+
+inline bool Buffer::ReplaceData(const size_t pBufferData_Offset, const size_t pBufferData_Count, const uint8_t *pReplace_Data, const size_t pReplace_Count) {
+ const size_t new_data_size = byteLength + pReplace_Count - pBufferData_Count;
+
+ uint8_t *new_data;
+
+ if ((pBufferData_Count == 0) || (pReplace_Count == 0) || (pReplace_Data == nullptr)) return false;
+
+ new_data = new uint8_t[new_data_size];
+ // Copy data which place before replacing part.
+ memcpy(new_data, mData.get(), pBufferData_Offset);
+ // Copy new data.
+ memcpy(&new_data[pBufferData_Offset], pReplace_Data, pReplace_Count);
+ // Copy data which place after replacing part.
+ memcpy(&new_data[pBufferData_Offset + pReplace_Count], &mData.get()[pBufferData_Offset + pBufferData_Count], pBufferData_Offset);
+ // Apply new data
+ mData.reset(new_data, std::default_delete<uint8_t[]>());
+ byteLength = new_data_size;
+
+ return true;
+}
+
+inline size_t Buffer::AppendData(uint8_t *data, size_t length) {
+ size_t offset = this->byteLength;
+ Grow(length);
+ memcpy(mData.get() + offset, data, length);
+ return offset;
+}
+
+inline void Buffer::Grow(size_t amount) {
+ if (amount <= 0) return;
+ if (capacity >= byteLength + amount) {
+ byteLength += amount;
+ return;
+ }
+
+ // Shift operation is standard way to divide integer by 2, it doesn't cast it to float back and forth, also works for odd numbers,
+ // originally it would look like: static_cast<size_t>(capacity * 1.5f)
+ capacity = std::max(capacity + (capacity >> 1), byteLength + amount);
+
+ uint8_t *b = new uint8_t[capacity];
+ if (mData) memcpy(b, mData.get(), byteLength);
+ mData.reset(b, std::default_delete<uint8_t[]>());
+ byteLength += amount;
+}
+
+//
+// struct BufferView
+//
+
+inline void BufferView::Read(Value &obj, Asset &r) {
+ const char *bufferId = MemberOrDefault<const char *>(obj, "buffer", 0);
+ if (bufferId) {
+ buffer = r.buffers.Get(bufferId);
+ }
+
+ byteOffset = MemberOrDefault(obj, "byteOffset", 0u);
+ byteLength = MemberOrDefault(obj, "byteLength", 0u);
+}
+
+//
+// struct Accessor
+//
+
+inline void Accessor::Read(Value &obj, Asset &r) {
+ const char *bufferViewId = MemberOrDefault<const char *>(obj, "bufferView", 0);
+ if (bufferViewId) {
+ bufferView = r.bufferViews.Get(bufferViewId);
+ }
+
+ byteOffset = MemberOrDefault(obj, "byteOffset", 0u);
+ byteStride = MemberOrDefault(obj, "byteStride", 0u);
+ componentType = MemberOrDefault(obj, "componentType", ComponentType_BYTE);
+ count = MemberOrDefault(obj, "count", 0u);
+
+ const char *typestr;
+ type = ReadMember(obj, "type", typestr) ? AttribType::FromString(typestr) : AttribType::SCALAR;
+}
+
+inline unsigned int Accessor::GetNumComponents() {
+ return AttribType::GetNumComponents(type);
+}
+
+inline unsigned int Accessor::GetBytesPerComponent() {
+ return int(ComponentTypeSize(componentType));
+}
+
+inline unsigned int Accessor::GetElementSize() {
+ return GetNumComponents() * GetBytesPerComponent();
+}
+
+inline uint8_t *Accessor::GetPointer() {
+ if (!bufferView || !bufferView->buffer) return 0;
+ uint8_t *basePtr = bufferView->buffer->GetPointer();
+ if (!basePtr) return 0;
+
+ size_t offset = byteOffset + bufferView->byteOffset;
+
+ // Check if region is encoded.
+ if (bufferView->buffer->EncodedRegion_Current != nullptr) {
+ const size_t begin = bufferView->buffer->EncodedRegion_Current->Offset;
+ const size_t end = begin + bufferView->buffer->EncodedRegion_Current->DecodedData_Length;
+
+ if ((offset >= begin) && (offset < end))
+ return &bufferView->buffer->EncodedRegion_Current->DecodedData[offset - begin];
+ }
+
+ return basePtr + offset;
+}
+
+namespace {
+inline void CopyData(size_t count,
+ const uint8_t *src, size_t src_stride,
+ uint8_t *dst, size_t dst_stride) {
+ if (src_stride == dst_stride) {
+ memcpy(dst, src, count * src_stride);
+ } else {
+ size_t sz = std::min(src_stride, dst_stride);
+ for (size_t i = 0; i < count; ++i) {
+ memcpy(dst, src, sz);
+ if (sz < dst_stride) {
+ memset(dst + sz, 0, dst_stride - sz);
+ }
+ src += src_stride;
+ dst += dst_stride;
+ }
+ }
+}
+} // namespace
+
+template <class T>
+bool Accessor::ExtractData(T *&outData) {
+ uint8_t *data = GetPointer();
+ if (!data) return false;
+
+ const size_t elemSize = GetElementSize();
+ const size_t totalSize = elemSize * count;
+
+ const size_t stride = byteStride ? byteStride : elemSize;
+
+ const size_t targetElemSize = sizeof(T);
+ ai_assert(elemSize <= targetElemSize);
+
+ ai_assert(count * stride <= bufferView->byteLength);
+
+ outData = new T[count];
+ if (stride == elemSize && targetElemSize == elemSize) {
+ memcpy(outData, data, totalSize);
+ } else {
+ for (size_t i = 0; i < count; ++i) {
+ memcpy(outData + i, data + i * stride, elemSize);
+ }
+ }
+
+ return true;
+}
+
+inline void Accessor::WriteData(size_t cnt, const void *src_buffer, size_t src_stride) {
+ uint8_t *buffer_ptr = bufferView->buffer->GetPointer();
+ size_t offset = byteOffset + bufferView->byteOffset;
+
+ size_t dst_stride = GetNumComponents() * GetBytesPerComponent();
+
+ const uint8_t *src = reinterpret_cast<const uint8_t *>(src_buffer);
+ uint8_t *dst = reinterpret_cast<uint8_t *>(buffer_ptr + offset);
+
+ ai_assert(dst + count * dst_stride <= buffer_ptr + bufferView->buffer->byteLength);
+ CopyData(cnt, src, src_stride, dst, dst_stride);
+}
+
+inline Accessor::Indexer::Indexer(Accessor &acc) :
+ accessor(acc), data(acc.GetPointer()), elemSize(acc.GetElementSize()), stride(acc.byteStride ? acc.byteStride : elemSize) {
+}
+
+//! Accesses the i-th value as defined by the accessor
+template <class T>
+T Accessor::Indexer::GetValue(int i) {
+ ai_assert(data);
+ ai_assert(i * stride < accessor.bufferView->byteLength);
+ T value = T();
+ memcpy(&value, data + i * stride, elemSize);
+ //value >>= 8 * (sizeof(T) - elemSize);
+ return value;
+}
+
+inline Image::Image() :
+ width(0), height(0), mDataLength(0) {
+}
+
+inline void Image::Read(Value &obj, Asset &r) {
+ // Check for extensions first (to detect binary embedded data)
+ if (Value *extensions = FindObject(obj, "extensions")) {
+ if (r.extensionsUsed.KHR_binary_glTF) {
+ if (Value *ext = FindObject(*extensions, "KHR_binary_glTF")) {
+
+ width = MemberOrDefault(*ext, "width", 0);
+ height = MemberOrDefault(*ext, "height", 0);
+
+ ReadMember(*ext, "mimeType", mimeType);
+
+ const char *bufferViewId;
+ if (ReadMember(*ext, "bufferView", bufferViewId)) {
+ Ref<BufferView> bv = r.bufferViews.Get(bufferViewId);
+ if (bv) {
+ mDataLength = bv->byteLength;
+ mData.reset(new uint8_t[mDataLength]);
+ memcpy(mData.get(), bv->buffer->GetPointer() + bv->byteOffset, mDataLength);
+ }
+ }
+ }
+ }
+ }
+
+ if (!mDataLength) {
+ Value *curUri = FindString(obj, "uri");
+ if (nullptr != curUri) {
+ const char *uristr = curUri->GetString();
+
+ glTFCommon::Util::DataURI dataURI;
+ if (ParseDataURI(uristr, curUri->GetStringLength(), dataURI)) {
+ mimeType = dataURI.mediaType;
+ if (dataURI.base64) {
+ uint8_t *ptr = nullptr;
+ mDataLength = Base64::Decode(dataURI.data, dataURI.dataLength, ptr);
+ mData.reset(ptr);
+ }
+ } else {
+ this->uri = uristr;
+ }
+ }
+ }
+}
+
+inline uint8_t *Image::StealData() {
+ mDataLength = 0;
+ return mData.release();
+}
+
+inline void Image::SetData(uint8_t *data, size_t length, Asset &r) {
+ Ref<Buffer> b = r.GetBodyBuffer();
+ if (b) { // binary file: append to body
+ std::string bvId = r.FindUniqueID(this->id, "imgdata");
+ bufferView = r.bufferViews.Create(bvId);
+
+ bufferView->buffer = b;
+ bufferView->byteLength = length;
+ bufferView->byteOffset = b->AppendData(data, length);
+ } else { // text file: will be stored as a data uri
+ uint8_t *temp = new uint8_t[length];
+ memcpy(temp, data, length);
+ this->mData.reset(temp);
+ this->mDataLength = length;
+ }
+}
+
+inline void Sampler::Read(Value &obj, Asset & /*r*/) {
+ SetDefaults();
+
+ ReadMember(obj, "magFilter", magFilter);
+ ReadMember(obj, "minFilter", minFilter);
+ ReadMember(obj, "wrapS", wrapS);
+ ReadMember(obj, "wrapT", wrapT);
+}
+
+inline void Sampler::SetDefaults() {
+ magFilter = SamplerMagFilter_Linear;
+ minFilter = SamplerMinFilter_Linear;
+ wrapS = SamplerWrap_Repeat;
+ wrapT = SamplerWrap_Repeat;
+}
+
+inline void Texture::Read(Value &obj, Asset &r) {
+ const char *sourcestr;
+ if (ReadMember(obj, "source", sourcestr)) {
+ source = r.images.Get(sourcestr);
+ }
+
+ const char *samplerstr;
+ if (ReadMember(obj, "sampler", samplerstr)) {
+ sampler = r.samplers.Get(samplerstr);
+ }
+}
+
+namespace {
+inline void ReadMaterialProperty(Asset &r, Value &vals, const char *propName, TexProperty &out) {
+ if (Value *prop = FindMember(vals, propName)) {
+ if (prop->IsString()) {
+ out.texture = r.textures.Get(prop->GetString());
+ } else {
+ ReadValue(*prop, out.color);
+ }
+ }
+}
+} // namespace
+
+inline void Material::Read(Value &material, Asset &r) {
+ SetDefaults();
+
+ if (Value *values = FindObject(material, "values")) {
+ ReadMaterialProperty(r, *values, "ambient", this->ambient);
+ ReadMaterialProperty(r, *values, "diffuse", this->diffuse);
+ ReadMaterialProperty(r, *values, "specular", this->specular);
+
+ ReadMember(*values, "transparency", transparency);
+ ReadMember(*values, "shininess", shininess);
+ }
+
+ if (Value *extensions = FindObject(material, "extensions")) {
+ if (r.extensionsUsed.KHR_materials_common) {
+ if (Value *ext = FindObject(*extensions, "KHR_materials_common")) {
+ if (Value *tnq = FindString(*ext, "technique")) {
+ const char *t = tnq->GetString();
+ if (strcmp(t, "BLINN") == 0)
+ technique = Technique_BLINN;
+ else if (strcmp(t, "PHONG") == 0)
+ technique = Technique_PHONG;
+ else if (strcmp(t, "LAMBERT") == 0)
+ technique = Technique_LAMBERT;
+ else if (strcmp(t, "CONSTANT") == 0)
+ technique = Technique_CONSTANT;
+ }
+
+ if (Value *values = FindObject(*ext, "values")) {
+ ReadMaterialProperty(r, *values, "ambient", this->ambient);
+ ReadMaterialProperty(r, *values, "diffuse", this->diffuse);
+ ReadMaterialProperty(r, *values, "specular", this->specular);
+
+ ReadMember(*values, "doubleSided", doubleSided);
+ ReadMember(*values, "transparent", transparent);
+ ReadMember(*values, "transparency", transparency);
+ ReadMember(*values, "shininess", shininess);
+ }
+ }
+ }
+ }
+}
+
+namespace {
+void SetVector(vec4 &v, float x, float y, float z, float w) {
+ v[0] = x;
+ v[1] = y;
+ v[2] = z;
+ v[3] = w;
+}
+} // namespace
+
+inline void Material::SetDefaults() {
+ SetVector(ambient.color, 0, 0, 0, 1);
+ SetVector(diffuse.color, 0, 0, 0, 1);
+ SetVector(specular.color, 0, 0, 0, 1);
+ SetVector(emission.color, 0, 0, 0, 1);
+
+ doubleSided = false;
+ transparent = false;
+ transparency = 1.0;
+ shininess = 0.0;
+
+ technique = Technique_undefined;
+}
+
+namespace {
+
+template <int N>
+inline int Compare(const char *attr, const char (&str)[N]) {
+ return (strncmp(attr, str, N - 1) == 0) ? N - 1 : 0;
+}
+
+inline bool GetAttribVector(Mesh::Primitive &p, const char *attr, Mesh::AccessorList *&v, int &pos) {
+ if ((pos = Compare(attr, "POSITION"))) {
+ v = &(p.attributes.position);
+ } else if ((pos = Compare(attr, "NORMAL"))) {
+ v = &(p.attributes.normal);
+ } else if ((pos = Compare(attr, "TEXCOORD"))) {
+ v = &(p.attributes.texcoord);
+ } else if ((pos = Compare(attr, "COLOR"))) {
+ v = &(p.attributes.color);
+ } else if ((pos = Compare(attr, "JOINT"))) {
+ v = &(p.attributes.joint);
+ } else if ((pos = Compare(attr, "JOINTMATRIX"))) {
+ v = &(p.attributes.jointmatrix);
+ } else if ((pos = Compare(attr, "WEIGHT"))) {
+ v = &(p.attributes.weight);
+ } else
+ return false;
+ return true;
+}
+} // namespace
+
+inline void Mesh::Read(Value &pJSON_Object, Asset &pAsset_Root) {
+ /****************** Mesh primitives ******************/
+ Value *curPrimitives = FindArray(pJSON_Object, "primitives");
+ if (nullptr != curPrimitives) {
+ this->primitives.resize(curPrimitives->Size());
+ for (unsigned int i = 0; i < curPrimitives->Size(); ++i) {
+ Value &primitive = (*curPrimitives)[i];
+
+ Primitive &prim = this->primitives[i];
+ prim.mode = MemberOrDefault(primitive, "mode", PrimitiveMode_TRIANGLES);
+
+ if (Value *attrs = FindObject(primitive, "attributes")) {
+ for (Value::MemberIterator it = attrs->MemberBegin(); it != attrs->MemberEnd(); ++it) {
+ if (!it->value.IsString()) continue;
+ const char *attr = it->name.GetString();
+ // Valid attribute semantics include POSITION, NORMAL, TEXCOORD, COLOR, JOINT, JOINTMATRIX,
+ // and WEIGHT.Attribute semantics can be of the form[semantic]_[set_index], e.g., TEXCOORD_0, TEXCOORD_1, etc.
+
+ int undPos = 0;
+ Mesh::AccessorList *vec = 0;
+ if (GetAttribVector(prim, attr, vec, undPos)) {
+ size_t idx = (attr[undPos] == '_') ? atoi(attr + undPos + 1) : 0;
+ if ((*vec).size() <= idx) (*vec).resize(idx + 1);
+ (*vec)[idx] = pAsset_Root.accessors.Get(it->value.GetString());
+ }
+ }
+ }
+
+ if (Value *indices = FindString(primitive, "indices")) {
+ prim.indices = pAsset_Root.accessors.Get(indices->GetString());
+ }
+
+ if (Value *material = FindString(primitive, "material")) {
+ prim.material = pAsset_Root.materials.Get(material->GetString());
+ }
+ }
+ }
+
+ /****************** Mesh extensions ******************/
+ Value *json_extensions = FindObject(pJSON_Object, "extensions");
+
+ if (json_extensions == nullptr) goto mr_skip_extensions;
+
+#ifdef ASSIMP_IMPORTER_GLTF_USE_OPEN3DGC
+ for (Value::MemberIterator it_memb = json_extensions->MemberBegin(); it_memb != json_extensions->MemberEnd(); it_memb++) {
+ if (it_memb->name.GetString() == std::string("Open3DGC-compression")) {
+ // Search for compressed data.
+ // Compressed data contain description of part of "buffer" which is encoded. This part must be decoded and
+ // new data will replace old encoded part by request. In fact \"compressedData\" is kind of "accessor" structure.
+ Value *comp_data = FindObject(it_memb->value, "compressedData");
+
+ if (comp_data == nullptr) throw DeadlyImportError("GLTF: \"Open3DGC-compression\" must has \"compressedData\".");
+
+ ASSIMP_LOG_INFO("GLTF: Decompressing Open3DGC data.");
+
+/************** Read data from JSON-document **************/
+#define MESH_READ_COMPRESSEDDATA_MEMBER(pFieldName, pOut) \
+ if (!ReadMember(*comp_data, pFieldName, pOut)) { \
+ throw DeadlyImportError("GLTF: \"compressedData\" must has \"", pFieldName, "\"."); \
+ }
+
+ const char *mode_str;
+ const char *type_str;
+ ComponentType component_type;
+ SCompression_Open3DGC *ext_o3dgc = new SCompression_Open3DGC;
+
+ MESH_READ_COMPRESSEDDATA_MEMBER("buffer", ext_o3dgc->Buffer);
+ MESH_READ_COMPRESSEDDATA_MEMBER("byteOffset", ext_o3dgc->Offset);
+ MESH_READ_COMPRESSEDDATA_MEMBER("componentType", component_type);
+ MESH_READ_COMPRESSEDDATA_MEMBER("type", type_str);
+ MESH_READ_COMPRESSEDDATA_MEMBER("count", ext_o3dgc->Count);
+ MESH_READ_COMPRESSEDDATA_MEMBER("mode", mode_str);
+ MESH_READ_COMPRESSEDDATA_MEMBER("indicesCount", ext_o3dgc->IndicesCount);
+ MESH_READ_COMPRESSEDDATA_MEMBER("verticesCount", ext_o3dgc->VerticesCount);
+
+#undef MESH_READ_COMPRESSEDDATA_MEMBER
+
+ // Check some values
+ if (strcmp(type_str, "SCALAR")) throw DeadlyImportError("GLTF: only \"SCALAR\" type is supported for compressed data.");
+ if (component_type != ComponentType_UNSIGNED_BYTE) throw DeadlyImportError("GLTF: only \"UNSIGNED_BYTE\" component type is supported for compressed data.");
+
+ // Set read/write data mode.
+ if (strcmp(mode_str, "binary") == 0)
+ ext_o3dgc->Binary = true;
+ else if (strcmp(mode_str, "ascii") == 0)
+ ext_o3dgc->Binary = false;
+ else
+ throw DeadlyImportError("GLTF: for compressed data supported modes is: \"ascii\", \"binary\". Not the: \"", mode_str, "\".");
+
+ /************************ Decoding ************************/
+ Decode_O3DGC(*ext_o3dgc, pAsset_Root);
+ Extension.push_back(ext_o3dgc); // store info in mesh extensions list.
+ } // if(it_memb->name.GetString() == "Open3DGC-compression")
+ else {
+ throw DeadlyImportError("GLTF: Unknown mesh extension: \"", it_memb->name.GetString(), "\".");
+ }
+ } // for(Value::MemberIterator it_memb = json_extensions->MemberBegin(); it_memb != json_extensions->MemberEnd(); json_extensions++)
+#endif
+
+mr_skip_extensions:
+
+ return; // After label some operators must be present.
+}
+
+#ifdef ASSIMP_IMPORTER_GLTF_USE_OPEN3DGC
+inline void Mesh::Decode_O3DGC(const SCompression_Open3DGC &pCompression_Open3DGC, Asset &pAsset_Root) {
+ typedef unsigned short IndicesType; ///< \sa glTFExporter::ExportMeshes.
+
+ o3dgc::SC3DMCDecoder<IndicesType> decoder;
+ o3dgc::IndexedFaceSet<IndicesType> ifs;
+ o3dgc::BinaryStream bstream;
+ uint8_t *decoded_data;
+ size_t decoded_data_size = 0;
+ Ref<Buffer> buf = pAsset_Root.buffers.Get(pCompression_Open3DGC.Buffer);
+
+ // Read data from buffer and place it in BinaryStream for decoder.
+ // Just "Count" because always is used type equivalent to uint8_t.
+ bstream.LoadFromBuffer(&buf->GetPointer()[pCompression_Open3DGC.Offset], static_cast<unsigned long>(pCompression_Open3DGC.Count));
+
+ // After decoding header we can get size of primitives.
+ if (decoder.DecodeHeader(ifs, bstream) != o3dgc::O3DGC_OK) throw DeadlyImportError("GLTF: can not decode Open3DGC header.");
+
+ /****************** Get sizes of arrays and check sizes ******************/
+ // Note. See "Limitations for meshes when using Open3DGC-compression".
+
+ // Indices
+ size_t size_coordindex = ifs.GetNCoordIndex() * 3; // See float attributes note.
+
+ if (primitives[0].indices->count != size_coordindex)
+ throw DeadlyImportError("GLTF: Open3DGC. Compressed indices count (", ai_to_string(size_coordindex),
+ ") not equal to uncompressed (", ai_to_string(primitives[0].indices->count), ").");
+
+ size_coordindex *= sizeof(IndicesType);
+ // Coordinates
+ size_t size_coord = ifs.GetNCoord(); // See float attributes note.
+
+ if (primitives[0].attributes.position[0]->count != size_coord)
+ throw DeadlyImportError("GLTF: Open3DGC. Compressed positions count (", ai_to_string(size_coord),
+ ") not equal to uncompressed (", ai_to_string(primitives[0].attributes.position[0]->count), ").");
+
+ size_coord *= 3 * sizeof(float);
+ // Normals
+ size_t size_normal = ifs.GetNNormal(); // See float attributes note.
+
+ if (primitives[0].attributes.normal[0]->count != size_normal)
+ throw DeadlyImportError("GLTF: Open3DGC. Compressed normals count (", ai_to_string(size_normal),
+ ") not equal to uncompressed (", ai_to_string(primitives[0].attributes.normal[0]->count), ").");
+
+ size_normal *= 3 * sizeof(float);
+ // Additional attributes.
+ std::vector<size_t> size_floatattr;
+ std::vector<size_t> size_intattr;
+
+ size_floatattr.resize(ifs.GetNumFloatAttributes());
+ size_intattr.resize(ifs.GetNumIntAttributes());
+
+ decoded_data_size = size_coordindex + size_coord + size_normal;
+ for (size_t idx = 0, idx_end = size_floatattr.size(), idx_texcoord = 0; idx < idx_end; idx++) {
+ // size = number_of_elements * components_per_element * size_of_component.
+ // Note. But as you can see above, at first we are use this variable in meaning "count". After checking count of objects...
+ size_t tval = ifs.GetNFloatAttribute(static_cast<unsigned long>(idx));
+
+ switch (ifs.GetFloatAttributeType(static_cast<unsigned long>(idx))) {
+ case o3dgc::O3DGC_IFS_FLOAT_ATTRIBUTE_TYPE_TEXCOORD:
+ // Check situation when encoded data contain texture coordinates but primitive not.
+ if (idx_texcoord < primitives[0].attributes.texcoord.size()) {
+ if (primitives[0].attributes.texcoord[idx]->count != tval)
+ throw DeadlyImportError("GLTF: Open3DGC. Compressed texture coordinates count (", ai_to_string(tval),
+ ") not equal to uncompressed (", ai_to_string(primitives[0].attributes.texcoord[idx]->count), ").");
+
+ idx_texcoord++;
+ } else {
+ ifs.SetNFloatAttribute(static_cast<unsigned long>(idx), 0ul); // Disable decoding this attribute.
+ }
+
+ break;
+ default:
+ throw DeadlyImportError("GLTF: Open3DGC. Unsupported type of float attribute: ", ai_to_string(ifs.GetFloatAttributeType(static_cast<unsigned long>(idx))));
+ }
+
+ tval *= ifs.GetFloatAttributeDim(static_cast<unsigned long>(idx)) * sizeof(o3dgc::Real); // After checking count of objects we can get size of array.
+ size_floatattr[idx] = tval;
+ decoded_data_size += tval;
+ }
+
+ for (size_t idx = 0, idx_end = size_intattr.size(); idx < idx_end; idx++) {
+ // size = number_of_elements * components_per_element * size_of_component. See float attributes note.
+ size_t tval = ifs.GetNIntAttribute(static_cast<unsigned long>(idx));
+ switch (ifs.GetIntAttributeType(static_cast<unsigned long>(idx))) {
+ case o3dgc::O3DGC_IFS_INT_ATTRIBUTE_TYPE_UNKOWN:
+ case o3dgc::O3DGC_IFS_INT_ATTRIBUTE_TYPE_INDEX:
+ case o3dgc::O3DGC_IFS_INT_ATTRIBUTE_TYPE_JOINT_ID:
+ case o3dgc::O3DGC_IFS_INT_ATTRIBUTE_TYPE_INDEX_BUFFER_ID:
+ break;
+
+ default:
+ throw DeadlyImportError("GLTF: Open3DGC. Unsupported type of int attribute: ", ai_to_string(ifs.GetIntAttributeType(static_cast<unsigned long>(idx))));
+ }
+
+ tval *= ifs.GetIntAttributeDim(static_cast<unsigned long>(idx)) * sizeof(long); // See float attributes note.
+ size_intattr[idx] = tval;
+ decoded_data_size += tval;
+ }
+
+ // Create array for decoded data.
+ decoded_data = new uint8_t[decoded_data_size];
+
+ /****************** Set right array regions for decoder ******************/
+
+ auto get_buf_offset = [](Ref<Accessor> &pAccessor) -> size_t { return pAccessor->byteOffset + pAccessor->bufferView->byteOffset; };
+
+ // Indices
+ ifs.SetCoordIndex((IndicesType *const)(decoded_data + get_buf_offset(primitives[0].indices)));
+ // Coordinates
+ ifs.SetCoord((o3dgc::Real *const)(decoded_data + get_buf_offset(primitives[0].attributes.position[0])));
+ // Normals
+ if (size_normal) {
+ ifs.SetNormal((o3dgc::Real *const)(decoded_data + get_buf_offset(primitives[0].attributes.normal[0])));
+ }
+
+ for (size_t idx = 0, idx_end = size_floatattr.size(), idx_texcoord = 0; idx < idx_end; idx++) {
+ switch (ifs.GetFloatAttributeType(static_cast<unsigned long>(idx))) {
+ case o3dgc::O3DGC_IFS_FLOAT_ATTRIBUTE_TYPE_TEXCOORD:
+ if (idx_texcoord < primitives[0].attributes.texcoord.size()) {
+ // See above about absent attributes.
+ ifs.SetFloatAttribute(static_cast<unsigned long>(idx), (o3dgc::Real *const)(decoded_data + get_buf_offset(primitives[0].attributes.texcoord[idx])));
+ idx_texcoord++;
+ }
+
+ break;
+ default:
+ throw DeadlyImportError("GLTF: Open3DGC. Unsupported type of float attribute: ", ai_to_string(ifs.GetFloatAttributeType(static_cast<unsigned long>(idx))));
+ }
+ }
+
+ for (size_t idx = 0, idx_end = size_intattr.size(); idx < idx_end; idx++) {
+ switch (ifs.GetIntAttributeType(static_cast<unsigned int>(idx))) {
+ case o3dgc::O3DGC_IFS_INT_ATTRIBUTE_TYPE_UNKOWN:
+ case o3dgc::O3DGC_IFS_INT_ATTRIBUTE_TYPE_INDEX:
+ case o3dgc::O3DGC_IFS_INT_ATTRIBUTE_TYPE_JOINT_ID:
+ case o3dgc::O3DGC_IFS_INT_ATTRIBUTE_TYPE_INDEX_BUFFER_ID:
+ break;
+
+ // ifs.SetIntAttribute(idx, (long* const)(decoded_data + get_buf_offset(primitives[0].attributes.joint)));
+ default:
+ throw DeadlyImportError("GLTF: Open3DGC. Unsupported type of int attribute: ", ai_to_string(ifs.GetIntAttributeType(static_cast<unsigned long>(idx))));
+ }
+ }
+
+ //
+ // Decode data
+ //
+ if (decoder.DecodePayload(ifs, bstream) != o3dgc::O3DGC_OK) {
+ throw DeadlyImportError("GLTF: can not decode Open3DGC data.");
+ }
+
+ // Set encoded region for "buffer".
+ buf->EncodedRegion_Mark(pCompression_Open3DGC.Offset, pCompression_Open3DGC.Count, decoded_data, decoded_data_size, id);
+ // No. Do not delete "output_data". After calling "EncodedRegion_Mark" bufferView is owner of "output_data".
+ // "delete [] output_data;"
+}
+#endif
+
+inline void Camera::Read(Value &obj, Asset & /*r*/) {
+ type = MemberOrDefault(obj, "type", Camera::Perspective);
+
+ const char *subobjId = (type == Camera::Orthographic) ? "orthographic" : "perspective";
+
+ Value *it = FindObject(obj, subobjId);
+ if (!it) throw DeadlyImportError("GLTF: Camera missing its parameters");
+
+ if (type == Camera::Perspective) {
+ perspective.aspectRatio = MemberOrDefault(*it, "aspectRatio", 0.f);
+ perspective.yfov = MemberOrDefault(*it, "yfov", 3.1415f / 2.f);
+ perspective.zfar = MemberOrDefault(*it, "zfar", 100.f);
+ perspective.znear = MemberOrDefault(*it, "znear", 0.01f);
+ } else {
+ ortographic.xmag = MemberOrDefault(*it, "xmag", 1.f);
+ ortographic.ymag = MemberOrDefault(*it, "ymag", 1.f);
+ ortographic.zfar = MemberOrDefault(*it, "zfar", 100.f);
+ ortographic.znear = MemberOrDefault(*it, "znear", 0.01f);
+ }
+}
+
+inline void Light::Read(Value &obj, Asset & /*r*/) {
+ SetDefaults();
+
+ Value *curType = FindString(obj, "type");
+ if (nullptr != curType) {
+ const char *t = curType->GetString();
+ if (strcmp(t, "ambient") == 0)
+ this->type = Type_ambient;
+ else if (strcmp(t, "directional") == 0)
+ this->type = Type_directional;
+ else if (strcmp(t, "point") == 0)
+ this->type = Type_point;
+ else if (strcmp(t, "spot") == 0)
+ this->type = Type_spot;
+
+ if (this->type != Type_undefined) {
+ if (Value *vals = FindString(obj, t)) {
+ ReadMember(*vals, "color", color);
+
+ ReadMember(*vals, "constantAttenuation", constantAttenuation);
+ ReadMember(*vals, "linearAttenuation", linearAttenuation);
+ ReadMember(*vals, "quadraticAttenuation", quadraticAttenuation);
+ ReadMember(*vals, "distance", distance);
+
+ ReadMember(*vals, "falloffAngle", falloffAngle);
+ ReadMember(*vals, "falloffExponent", falloffExponent);
+ }
+ }
+ }
+}
+
+inline void Light::SetDefaults() {
+#ifndef M_PI
+ const float M_PI = 3.14159265358979323846f;
+#endif
+
+ type = Type_undefined;
+
+ SetVector(color, 0.f, 0.f, 0.f, 1.f);
+
+ constantAttenuation = 0.f;
+ linearAttenuation = 1.f;
+ quadraticAttenuation = 1.f;
+ distance = 0.f;
+
+ falloffAngle = static_cast<float>(M_PI / 2.f);
+ falloffExponent = 0.f;
+}
+
+inline void Node::Read(Value &obj, Asset &r) {
+ if (name.empty()) {
+ name = id;
+ }
+
+ Value *curChildren = FindArray(obj, "children");
+ if (nullptr != curChildren) {
+ this->children.reserve(curChildren->Size());
+ for (unsigned int i = 0; i < curChildren->Size(); ++i) {
+ Value &child = (*curChildren)[i];
+ if (child.IsString()) {
+ // get/create the child node
+ Ref<Node> chn = r.nodes.Get(child.GetString());
+ if (chn) this->children.push_back(chn);
+ }
+ }
+ }
+
+ Value *curMatrix = FindArray(obj, "matrix");
+ if (nullptr != curMatrix) {
+ ReadValue(*curMatrix, this->matrix);
+ } else {
+ ReadMember(obj, "translation", translation);
+ ReadMember(obj, "scale", scale);
+ ReadMember(obj, "rotation", rotation);
+ }
+
+ Value *curMeshes = FindArray(obj, "meshes");
+ if (nullptr != curMeshes) {
+ unsigned int numMeshes = (unsigned int)curMeshes->Size();
+
+ std::vector<unsigned int> meshList;
+
+ this->meshes.reserve(numMeshes);
+ for (unsigned i = 0; i < numMeshes; ++i) {
+ if ((*curMeshes)[i].IsString()) {
+ Ref<Mesh> mesh = r.meshes.Get((*curMeshes)[i].GetString());
+ if (mesh) {
+ this->meshes.push_back(mesh);
+ }
+ }
+ }
+ }
+
+ Value *curCamera = FindString(obj, "camera");
+ if (nullptr != curCamera) {
+ this->camera = r.cameras.Get(curCamera->GetString());
+ if (this->camera) {
+ this->camera->id = this->id;
+ }
+ }
+
+ // TODO load "skeletons", "skin", "jointName"
+
+ if (Value *extensions = FindObject(obj, "extensions")) {
+ if (r.extensionsUsed.KHR_materials_common) {
+
+ if (Value *ext = FindObject(*extensions, "KHR_materials_common")) {
+ Value *curLight = FindString(*ext, "light");
+ if (nullptr != curLight) {
+ this->light = r.lights.Get(curLight->GetString());
+ }
+ }
+ }
+ }
+}
+
+inline void Scene::Read(Value &obj, Asset &r) {
+ if (Value *array = FindArray(obj, "nodes")) {
+ for (unsigned int i = 0; i < array->Size(); ++i) {
+ if (!(*array)[i].IsString()) continue;
+ Ref<Node> node = r.nodes.Get((*array)[i].GetString());
+ if (node)
+ this->nodes.push_back(node);
+ }
+ }
+}
+
+inline void AssetMetadata::Read(Document &doc) {
+ // read the version, etc.
+ if (Value *obj = FindObject(doc, "asset")) {
+ ReadMember(*obj, "copyright", copyright);
+ ReadMember(*obj, "generator", generator);
+
+ premultipliedAlpha = MemberOrDefault(*obj, "premultipliedAlpha", false);
+
+ if (Value *versionString = FindString(*obj, "version")) {
+ version = versionString->GetString();
+ } else if (Value *versionNumber = FindNumber(*obj, "version")) {
+ char buf[4];
+
+ ai_snprintf(buf, 4, "%.1f", versionNumber->GetDouble());
+
+ version = buf;
+ }
+
+ Value *curProfile = FindObject(*obj, "profile");
+ if (nullptr != curProfile) {
+ ReadMember(*curProfile, "api", this->profile.api);
+ ReadMember(*curProfile, "version", this->profile.version);
+ }
+ }
+
+ if (version.empty() || version[0] != '1') {
+ throw DeadlyImportError("GLTF: Unsupported glTF version: ", version);
+ }
+}
+
+//
+// Asset methods implementation
+//
+
+inline void Asset::ReadBinaryHeader(IOStream &stream) {
+ GLB_Header header;
+ if (stream.Read(&header, sizeof(header), 1) != 1) {
+ throw DeadlyImportError("GLTF: Unable to read the file header");
+ }
+
+ if (strncmp((char *)header.magic, AI_GLB_MAGIC_NUMBER, sizeof(header.magic)) != 0) {
+ throw DeadlyImportError("GLTF: Invalid binary glTF file");
+ }
+
+ AI_SWAP4(header.version);
+ asset.version = ai_to_string(header.version);
+ if (header.version != 1) {
+ throw DeadlyImportError("GLTF: Unsupported binary glTF version");
+ }
+
+ AI_SWAP4(header.sceneFormat);
+ if (header.sceneFormat != SceneFormat_JSON) {
+ throw DeadlyImportError("GLTF: Unsupported binary glTF scene format");
+ }
+
+ AI_SWAP4(header.length);
+ AI_SWAP4(header.sceneLength);
+
+ static_assert(std::numeric_limits<uint32_t>::max() <= std::numeric_limits<size_t>::max(), "size_t must be at least 32bits");
+ mSceneLength = static_cast<size_t>(header.sceneLength); // Can't be larger than 4GB (max. uint32_t)
+
+ mBodyOffset = sizeof(header) + mSceneLength;
+ mBodyOffset = (mBodyOffset + 3) & ~3; // Round up to next multiple of 4
+
+ mBodyLength = header.length - mBodyOffset;
+}
+
+inline void Asset::Load(const std::string &pFile, bool isBinary) {
+ mCurrentAssetDir.clear();
+
+ /*int pos = std::max(int(pFile.rfind('/')), int(pFile.rfind('\\')));
+ if (pos != int(std::string::npos)) mCurrentAssetDir = pFile.substr(0, pos + 1);*/
+ if (0 != strncmp(pFile.c_str(), AI_MEMORYIO_MAGIC_FILENAME, AI_MEMORYIO_MAGIC_FILENAME_LENGTH)) {
+ mCurrentAssetDir = getCurrentAssetDir(pFile);
+ }
+
+ shared_ptr<IOStream> stream(OpenFile(pFile.c_str(), "rb", true));
+ if (!stream) {
+ throw DeadlyImportError("GLTF: Could not open file for reading");
+ }
+
+ // is binary? then read the header
+ if (isBinary) {
+ SetAsBinary(); // also creates the body buffer
+ ReadBinaryHeader(*stream);
+ } else {
+ mSceneLength = stream->FileSize();
+ mBodyLength = 0;
+ }
+
+ // Smallest legal JSON file is "{}" Smallest loadable glTF file is larger than that but catch it later
+ if (mSceneLength < 2) {
+ throw DeadlyImportError("GLTF: No JSON file contents");
+ }
+
+ // Binary format only supports up to 4GB of JSON so limit it there to avoid extreme memory allocation
+ if (mSceneLength >= std::numeric_limits<uint32_t>::max()) {
+ throw DeadlyImportError("GLTF: JSON size greater than 4GB");
+ }
+
+ // read the scene data, ensure null termination
+ std::vector<char> sceneData(mSceneLength + 1);
+ sceneData[mSceneLength] = '\0';
+
+ if (stream->Read(&sceneData[0], 1, mSceneLength) != mSceneLength) {
+ throw DeadlyImportError("GLTF: Could not read the file contents");
+ }
+
+ // parse the JSON document
+
+ Document doc;
+ doc.ParseInsitu(&sceneData[0]);
+
+ if (doc.HasParseError()) {
+ char buffer[32];
+ ai_snprintf(buffer, 32, "%d", static_cast<int>(doc.GetErrorOffset()));
+ throw DeadlyImportError("GLTF: JSON parse error, offset ", buffer, ": ", GetParseError_En(doc.GetParseError()));
+ }
+
+ if (!doc.IsObject()) {
+ throw DeadlyImportError("GLTF: JSON document root must be a JSON object");
+ }
+
+ // Fill the buffer instance for the current file embedded contents
+ if (mBodyLength > 0) {
+ if (!mBodyBuffer->LoadFromStream(*stream, mBodyLength, mBodyOffset)) {
+ throw DeadlyImportError("GLTF: Unable to read gltf file");
+ }
+ }
+
+ // Load the metadata
+ asset.Read(doc);
+ ReadExtensionsUsed(doc);
+
+ // Prepare the dictionaries
+ for (size_t i = 0; i < mDicts.size(); ++i) {
+ mDicts[i]->AttachToDocument(doc);
+ }
+
+ // Read the "scene" property, which specifies which scene to load
+ // and recursively load everything referenced by it
+ Value *curScene = FindString(doc, "scene");
+ if (nullptr != curScene) {
+ this->scene = scenes.Get(curScene->GetString());
+ }
+
+ // Clean up
+ for (size_t i = 0; i < mDicts.size(); ++i) {
+ mDicts[i]->DetachFromDocument();
+ }
+}
+
+inline void Asset::SetAsBinary() {
+ if (!extensionsUsed.KHR_binary_glTF) {
+ extensionsUsed.KHR_binary_glTF = true;
+ mBodyBuffer = buffers.Create("binary_glTF");
+ mBodyBuffer->MarkAsSpecial();
+ }
+}
+
+inline void Asset::ReadExtensionsUsed(Document &doc) {
+ Value *extsUsed = FindArray(doc, "extensionsUsed");
+ if (!extsUsed) return;
+
+ std::gltf_unordered_map<std::string, bool> exts;
+
+ for (unsigned int i = 0; i < extsUsed->Size(); ++i) {
+ if ((*extsUsed)[i].IsString()) {
+ exts[(*extsUsed)[i].GetString()] = true;
+ }
+ }
+
+ CHECK_EXT(KHR_binary_glTF);
+ CHECK_EXT(KHR_materials_common);
+
+#undef CHECK_EXT
+}
+
+inline IOStream *Asset::OpenFile(const std::string &path, const char *mode, bool absolute) {
+#ifdef ASSIMP_API
+ (void)absolute;
+ return mIOSystem->Open(path, mode);
+#else
+ if (path.size() < 2) return 0;
+ if (!absolute && path[1] != ':' && path[0] != '/') { // relative?
+ path = mCurrentAssetDir + path;
+ }
+ FILE *f = fopen(path.c_str(), mode);
+ return f ? new IOStream(f) : 0;
+#endif
+}
+
+inline std::string Asset::FindUniqueID(const std::string &str, const char *suffix) {
+ std::string id = str;
+
+ if (!id.empty()) {
+ if (mUsedIds.find(id) == mUsedIds.end())
+ return id;
+
+ id += "_";
+ }
+
+ id += suffix;
+
+ Asset::IdMap::iterator it = mUsedIds.find(id);
+ if (it == mUsedIds.end())
+ return id;
+
+ char buffer[1024];
+ int offset = ai_snprintf(buffer, sizeof(buffer), "%s_", id.c_str());
+ for (int i = 0; it != mUsedIds.end(); ++i) {
+ ai_snprintf(buffer + offset, sizeof(buffer) - offset, "%d", i);
+ id = buffer;
+ it = mUsedIds.find(id);
+ }
+
+ return id;
+}
+
+#if _MSC_VER
+#pragma warning(pop)
+#endif // _MSC_VER
+
+} // namespace glTF
diff --git a/libs/assimp/code/AssetLib/glTF/glTFAssetWriter.h b/libs/assimp/code/AssetLib/glTF/glTFAssetWriter.h
new file mode 100644
index 0000000..6dbc424
--- /dev/null
+++ b/libs/assimp/code/AssetLib/glTF/glTFAssetWriter.h
@@ -0,0 +1,96 @@
+/*
+Open Asset Import Library (assimp)
+----------------------------------------------------------------------
+
+Copyright (c) 2006-2022, assimp team
+
+
+All rights reserved.
+
+Redistribution and use of this software in source and binary forms,
+with or without modification, are permitted provided that the
+following conditions are met:
+
+* Redistributions of source code must retain the above
+copyright notice, this list of conditions and the
+following disclaimer.
+
+* Redistributions in binary form must reproduce the above
+copyright notice, this list of conditions and the
+following disclaimer in the documentation and/or other
+materials provided with the distribution.
+
+* Neither the name of the assimp team, nor the names of its
+contributors may be used to endorse or promote products
+derived from this software without specific prior
+written permission of the assimp team.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+----------------------------------------------------------------------
+*/
+
+/** @file glTFWriter.h
+ * Declares a class to write gltf/glb files
+ *
+ * glTF Extensions Support:
+ * KHR_binary_glTF: full
+ * KHR_materials_common: full
+ */
+#ifndef GLTFASSETWRITER_H_INC
+#define GLTFASSETWRITER_H_INC
+
+#if !defined(ASSIMP_BUILD_NO_GLTF_IMPORTER) && !defined(ASSIMP_BUILD_NO_GLTF1_IMPORTER)
+
+#include "glTFAsset.h"
+
+namespace glTF
+{
+
+using rapidjson::MemoryPoolAllocator;
+
+class AssetWriter
+{
+ template<class T>
+ friend void WriteLazyDict(LazyDict<T>& d, AssetWriter& w);
+
+private:
+
+ void WriteBinaryData(IOStream* outfile, size_t sceneLength);
+
+ void WriteMetadata();
+ void WriteExtensionsUsed();
+
+ template<class T>
+ void WriteObjects(LazyDict<T>& d);
+
+public:
+ Document mDoc;
+ Asset& mAsset;
+
+ MemoryPoolAllocator<>& mAl;
+
+ AssetWriter(Asset& asset);
+
+ void WriteFile(const char* path);
+ void WriteGLBFile(const char* path);
+};
+
+}
+
+// Include the implementation of the methods
+#include "glTFAssetWriter.inl"
+
+#endif // ASSIMP_BUILD_NO_GLTF_IMPORTER
+
+#endif // GLTFASSETWRITER_H_INC
diff --git a/libs/assimp/code/AssetLib/glTF/glTFAssetWriter.inl b/libs/assimp/code/AssetLib/glTF/glTFAssetWriter.inl
new file mode 100644
index 0000000..a1265fb
--- /dev/null
+++ b/libs/assimp/code/AssetLib/glTF/glTFAssetWriter.inl
@@ -0,0 +1,716 @@
+/*
+Open Asset Import Library (assimp)
+----------------------------------------------------------------------
+
+Copyright (c) 2006-2022, assimp team
+
+All rights reserved.
+
+Redistribution and use of this software in source and binary forms,
+with or without modification, are permitted provided that the
+following conditions are met:
+
+* Redistributions of source code must retain the above
+copyright notice, this list of conditions and the
+following disclaimer.
+
+* Redistributions in binary form must reproduce the above
+copyright notice, this list of conditions and the
+following disclaimer in the documentation and/or other
+materials provided with the distribution.
+
+* Neither the name of the assimp team, nor the names of its
+contributors may be used to endorse or promote products
+derived from this software without specific prior
+written permission of the assimp team.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+----------------------------------------------------------------------
+*/
+
+#include <assimp/Base64.hpp>
+
+#include <rapidjson/stringbuffer.h>
+#include <rapidjson/writer.h>
+#include <rapidjson/prettywriter.h>
+
+#if _MSC_VER
+# pragma warning(push)
+# pragma warning( disable : 4706)
+#endif // _MSC_VER
+
+namespace glTF {
+
+ using rapidjson::StringBuffer;
+ using rapidjson::PrettyWriter;
+ using rapidjson::Writer;
+ using rapidjson::StringRef;
+ using rapidjson::StringRef;
+
+ namespace {
+
+ template<typename T, size_t N>
+ inline
+ Value& MakeValue(Value& val, T(&r)[N], MemoryPoolAllocator<>& al) {
+ val.SetArray();
+ val.Reserve(N, al);
+ for (decltype(N) i = 0; i < N; ++i) {
+ val.PushBack(r[i], al);
+ }
+ return val;
+ }
+
+ template<typename T>
+ inline
+ Value& MakeValue(Value& val, const std::vector<T> & r, MemoryPoolAllocator<>& al) {
+ val.SetArray();
+ val.Reserve(static_cast<rapidjson::SizeType>(r.size()), al);
+ for (unsigned int i = 0; i < r.size(); ++i) {
+ val.PushBack(r[i], al);
+ }
+ return val;
+ }
+
+ template<typename C, typename T>
+ inline Value& MakeValueCast(Value& val, const std::vector<T> & r, MemoryPoolAllocator<>& al) {
+ val.SetArray();
+ val.Reserve(static_cast<rapidjson::SizeType>(r.size()), al);
+ for (unsigned int i = 0; i < r.size(); ++i) {
+ val.PushBack(static_cast<C>(r[i]), al);
+ }
+ return val;
+ }
+
+ template<class T>
+ inline void AddRefsVector(Value& obj, const char* fieldId, std::vector< Ref<T> >& v, MemoryPoolAllocator<>& al) {
+ if (v.empty()) return;
+ Value lst;
+ lst.SetArray();
+ lst.Reserve(unsigned(v.size()), al);
+ for (size_t i = 0; i < v.size(); ++i) {
+ lst.PushBack(StringRef(v[i]->id), al);
+ }
+ obj.AddMember(StringRef(fieldId), lst, al);
+ }
+
+
+ }
+
+ inline void Write(Value& obj, Accessor& a, AssetWriter& w)
+ {
+ obj.AddMember("bufferView", Value(a.bufferView->id, w.mAl).Move(), w.mAl);
+ obj.AddMember("byteOffset", a.byteOffset, w.mAl);
+ obj.AddMember("byteStride", a.byteStride, w.mAl);
+ obj.AddMember("componentType", int(a.componentType), w.mAl);
+ obj.AddMember("count", a.count, w.mAl);
+ obj.AddMember("type", StringRef(AttribType::ToString(a.type)), w.mAl);
+
+ Value vTmpMax, vTmpMin;
+ if (a.componentType == ComponentType_FLOAT) {
+ obj.AddMember("max", MakeValue(vTmpMax, a.max, w.mAl), w.mAl);
+ obj.AddMember("min", MakeValue(vTmpMin, a.min, w.mAl), w.mAl);
+ } else {
+ obj.AddMember("max", MakeValueCast<int64_t>(vTmpMax, a.max, w.mAl), w.mAl);
+ obj.AddMember("min", MakeValueCast<int64_t>(vTmpMin, a.min, w.mAl), w.mAl);
+ }
+ }
+
+ inline void Write(Value& obj, Animation& a, AssetWriter& w)
+ {
+ /****************** Channels *******************/
+ Value channels;
+ channels.SetArray();
+ channels.Reserve(unsigned(a.Channels.size()), w.mAl);
+
+ for (size_t i = 0; i < unsigned(a.Channels.size()); ++i) {
+ Animation::AnimChannel& c = a.Channels[i];
+ Value valChannel;
+ valChannel.SetObject();
+ {
+ valChannel.AddMember("sampler", c.sampler, w.mAl);
+
+ Value valTarget;
+ valTarget.SetObject();
+ {
+ valTarget.AddMember("id", StringRef(c.target.id->id), w.mAl);
+ valTarget.AddMember("path", c.target.path, w.mAl);
+ }
+ valChannel.AddMember("target", valTarget, w.mAl);
+ }
+ channels.PushBack(valChannel, w.mAl);
+ }
+ obj.AddMember("channels", channels, w.mAl);
+
+ /****************** Parameters *******************/
+ Value valParameters;
+ valParameters.SetObject();
+ {
+ if (a.Parameters.TIME) {
+ valParameters.AddMember("TIME", StringRef(a.Parameters.TIME->id), w.mAl);
+ }
+ if (a.Parameters.rotation) {
+ valParameters.AddMember("rotation", StringRef(a.Parameters.rotation->id), w.mAl);
+ }
+ if (a.Parameters.scale) {
+ valParameters.AddMember("scale", StringRef(a.Parameters.scale->id), w.mAl);
+ }
+ if (a.Parameters.translation) {
+ valParameters.AddMember("translation", StringRef(a.Parameters.translation->id), w.mAl);
+ }
+ }
+ obj.AddMember("parameters", valParameters, w.mAl);
+
+ /****************** Samplers *******************/
+ Value valSamplers;
+ valSamplers.SetObject();
+
+ for (size_t i = 0; i < unsigned(a.Samplers.size()); ++i) {
+ Animation::AnimSampler& s = a.Samplers[i];
+ Value valSampler;
+ valSampler.SetObject();
+ {
+ valSampler.AddMember("input", s.input, w.mAl);
+ valSampler.AddMember("interpolation", s.interpolation, w.mAl);
+ valSampler.AddMember("output", s.output, w.mAl);
+ }
+ valSamplers.AddMember(StringRef(s.id), valSampler, w.mAl);
+ }
+ obj.AddMember("samplers", valSamplers, w.mAl);
+ }
+
+ inline void Write(Value& obj, Buffer& b, AssetWriter& w)
+ {
+ const char* type;
+ switch (b.type) {
+ case Buffer::Type_text:
+ type = "text"; break;
+ default:
+ type = "arraybuffer";
+ }
+
+ obj.AddMember("byteLength", static_cast<uint64_t>(b.byteLength), w.mAl);
+ obj.AddMember("type", StringRef(type), w.mAl);
+ obj.AddMember("uri", Value(b.GetURI(), w.mAl).Move(), w.mAl);
+ }
+
+ inline void Write(Value& obj, BufferView& bv, AssetWriter& w)
+ {
+ obj.AddMember("buffer", Value(bv.buffer->id, w.mAl).Move(), w.mAl);
+ obj.AddMember("byteOffset", static_cast<uint64_t>(bv.byteOffset), w.mAl);
+ obj.AddMember("byteLength", static_cast<uint64_t>(bv.byteLength), w.mAl);
+ if (bv.target != BufferViewTarget_NONE) {
+ obj.AddMember("target", int(bv.target), w.mAl);
+ }
+ }
+
+ inline void Write(Value& /*obj*/, Camera& /*c*/, AssetWriter& /*w*/)
+ {
+
+ }
+
+ inline void Write(Value& obj, Image& img, AssetWriter& w)
+ {
+ std::string uri;
+ if (w.mAsset.extensionsUsed.KHR_binary_glTF && img.bufferView) {
+ Value exts, ext;
+ exts.SetObject();
+ ext.SetObject();
+
+ ext.AddMember("bufferView", StringRef(img.bufferView->id), w.mAl);
+
+ if (!img.mimeType.empty())
+ ext.AddMember("mimeType", StringRef(img.mimeType), w.mAl);
+
+ exts.AddMember("KHR_binary_glTF", ext, w.mAl);
+ obj.AddMember("extensions", exts, w.mAl);
+ return;
+ }
+ else if (img.HasData()) {
+ uri = "data:" + (img.mimeType.empty() ? "application/octet-stream" : img.mimeType);
+ uri += ";base64,";
+ Base64::Encode(img.GetData(), img.GetDataLength(), uri);
+ }
+ else {
+ uri = img.uri;
+ }
+
+ obj.AddMember("uri", Value(uri, w.mAl).Move(), w.mAl);
+ }
+
+ namespace {
+ inline void WriteColorOrTex(Value& obj, TexProperty& prop, const char* propName, MemoryPoolAllocator<>& al)
+ {
+ if (prop.texture)
+ obj.AddMember(StringRef(propName), Value(prop.texture->id, al).Move(), al);
+ else {
+ Value col;
+ obj.AddMember(StringRef(propName), MakeValue(col, prop.color, al), al);
+ }
+ }
+ }
+
+ inline void Write(Value& obj, Material& m, AssetWriter& w)
+ {
+ Value v;
+ v.SetObject();
+ {
+ WriteColorOrTex(v, m.ambient, "ambient", w.mAl);
+ WriteColorOrTex(v, m.diffuse, "diffuse", w.mAl);
+ WriteColorOrTex(v, m.specular, "specular", w.mAl);
+ WriteColorOrTex(v, m.emission, "emission", w.mAl);
+
+ if (m.transparent)
+ v.AddMember("transparency", m.transparency, w.mAl);
+
+ v.AddMember("shininess", m.shininess, w.mAl);
+ }
+ obj.AddMember("values", v, w.mAl);
+ }
+
+ namespace {
+ inline void WriteAttrs(AssetWriter& w, Value& attrs, Mesh::AccessorList& lst,
+ const char* semantic, bool forceNumber = false)
+ {
+ if (lst.empty()) return;
+ if (lst.size() == 1 && !forceNumber) {
+ attrs.AddMember(StringRef(semantic), Value(lst[0]->id, w.mAl).Move(), w.mAl);
+ }
+ else {
+ for (size_t i = 0; i < lst.size(); ++i) {
+ char buffer[32];
+ ai_snprintf(buffer, 32, "%s_%d", semantic, int(i));
+ attrs.AddMember(Value(buffer, w.mAl).Move(), Value(lst[i]->id, w.mAl).Move(), w.mAl);
+ }
+ }
+ }
+ }
+
+ inline void Write(Value& obj, Mesh& m, AssetWriter& w)
+ {
+ /********************* Name **********************/
+ obj.AddMember("name", m.name, w.mAl);
+
+ /**************** Mesh extensions ****************/
+ if(m.Extension.size() > 0)
+ {
+ Value json_extensions;
+
+ json_extensions.SetObject();
+#ifdef ASSIMP_IMPORTER_GLTF_USE_OPEN3DGC
+ for(Mesh::SExtension* ptr_ext : m.Extension)
+ {
+ switch(ptr_ext->Type)
+ {
+ case Mesh::SExtension::EType::Compression_Open3DGC:
+ {
+ Value json_comp_data;
+ Mesh::SCompression_Open3DGC* ptr_ext_comp = (Mesh::SCompression_Open3DGC*)ptr_ext;
+
+ // filling object "compressedData"
+ json_comp_data.SetObject();
+ json_comp_data.AddMember("buffer", ptr_ext_comp->Buffer, w.mAl);
+ json_comp_data.AddMember("byteOffset", static_cast<uint64_t>(ptr_ext_comp->Offset), w.mAl);
+ json_comp_data.AddMember("componentType", 5121, w.mAl);
+ json_comp_data.AddMember("type", "SCALAR", w.mAl);
+ json_comp_data.AddMember("count", static_cast<uint64_t>(ptr_ext_comp->Count), w.mAl);
+ if(ptr_ext_comp->Binary)
+ json_comp_data.AddMember("mode", "binary", w.mAl);
+ else
+ json_comp_data.AddMember("mode", "ascii", w.mAl);
+
+ json_comp_data.AddMember("indicesCount", static_cast<uint64_t>(ptr_ext_comp->IndicesCount), w.mAl);
+ json_comp_data.AddMember("verticesCount", static_cast<uint64_t>(ptr_ext_comp->VerticesCount), w.mAl);
+ // filling object "Open3DGC-compression"
+ Value json_o3dgc;
+
+ json_o3dgc.SetObject();
+ json_o3dgc.AddMember("compressedData", json_comp_data, w.mAl);
+ // add member to object "extensions"
+ json_extensions.AddMember("Open3DGC-compression", json_o3dgc, w.mAl);
+ }
+
+ break;
+ default:
+ throw DeadlyImportError("GLTF: Can not write mesh: unknown mesh extension, only Open3DGC is supported.");
+ }// switch(ptr_ext->Type)
+ }// for(Mesh::SExtension* ptr_ext : m.Extension)
+#endif
+
+ // Add extensions to mesh
+ obj.AddMember("extensions", json_extensions, w.mAl);
+ }// if(m.Extension.size() > 0)
+
+ /****************** Primitives *******************/
+ Value primitives;
+ primitives.SetArray();
+ primitives.Reserve(unsigned(m.primitives.size()), w.mAl);
+
+ for (size_t i = 0; i < m.primitives.size(); ++i) {
+ Mesh::Primitive& p = m.primitives[i];
+ Value prim;
+ prim.SetObject();
+ {
+ prim.AddMember("mode", Value(int(p.mode)).Move(), w.mAl);
+
+ if (p.material)
+ prim.AddMember("material", p.material->id, w.mAl);
+
+ if (p.indices)
+ prim.AddMember("indices", Value(p.indices->id, w.mAl).Move(), w.mAl);
+
+ Value attrs;
+ attrs.SetObject();
+ {
+ WriteAttrs(w, attrs, p.attributes.position, "POSITION");
+ WriteAttrs(w, attrs, p.attributes.normal, "NORMAL");
+ WriteAttrs(w, attrs, p.attributes.texcoord, "TEXCOORD", true);
+ WriteAttrs(w, attrs, p.attributes.color, "COLOR");
+ WriteAttrs(w, attrs, p.attributes.joint, "JOINT");
+ WriteAttrs(w, attrs, p.attributes.jointmatrix, "JOINTMATRIX");
+ WriteAttrs(w, attrs, p.attributes.weight, "WEIGHT");
+ }
+ prim.AddMember("attributes", attrs, w.mAl);
+ }
+ primitives.PushBack(prim, w.mAl);
+ }
+
+ obj.AddMember("primitives", primitives, w.mAl);
+ }
+
+ inline void Write(Value& obj, Node& n, AssetWriter& w)
+ {
+
+ if (n.matrix.isPresent) {
+ Value val;
+ obj.AddMember("matrix", MakeValue(val, n.matrix.value, w.mAl).Move(), w.mAl);
+ }
+
+ if (n.translation.isPresent) {
+ Value val;
+ obj.AddMember("translation", MakeValue(val, n.translation.value, w.mAl).Move(), w.mAl);
+ }
+
+ if (n.scale.isPresent) {
+ Value val;
+ obj.AddMember("scale", MakeValue(val, n.scale.value, w.mAl).Move(), w.mAl);
+ }
+ if (n.rotation.isPresent) {
+ Value val;
+ obj.AddMember("rotation", MakeValue(val, n.rotation.value, w.mAl).Move(), w.mAl);
+ }
+
+ AddRefsVector(obj, "children", n.children, w.mAl);
+
+ AddRefsVector(obj, "meshes", n.meshes, w.mAl);
+
+ AddRefsVector(obj, "skeletons", n.skeletons, w.mAl);
+
+ if (n.skin) {
+ obj.AddMember("skin", Value(n.skin->id, w.mAl).Move(), w.mAl);
+ }
+
+ if (!n.jointName.empty()) {
+ obj.AddMember("jointName", n.jointName, w.mAl);
+ }
+ }
+
+ inline void Write(Value& /*obj*/, Program& /*b*/, AssetWriter& /*w*/)
+ {
+
+ }
+
+ inline void Write(Value& obj, Sampler& b, AssetWriter& w)
+ {
+ if (b.wrapS) {
+ obj.AddMember("wrapS", b.wrapS, w.mAl);
+ }
+ if (b.wrapT) {
+ obj.AddMember("wrapT", b.wrapT, w.mAl);
+ }
+ if (b.magFilter) {
+ obj.AddMember("magFilter", b.magFilter, w.mAl);
+ }
+ if (b.minFilter) {
+ obj.AddMember("minFilter", b.minFilter, w.mAl);
+ }
+ }
+
+ inline void Write(Value& scene, Scene& s, AssetWriter& w)
+ {
+ AddRefsVector(scene, "nodes", s.nodes, w.mAl);
+ }
+
+ inline void Write(Value& /*obj*/, Shader& /*b*/, AssetWriter& /*w*/)
+ {
+
+ }
+
+ inline void Write(Value& obj, Skin& b, AssetWriter& w)
+ {
+ /****************** jointNames *******************/
+ Value vJointNames;
+ vJointNames.SetArray();
+ vJointNames.Reserve(unsigned(b.jointNames.size()), w.mAl);
+
+ for (size_t i = 0; i < unsigned(b.jointNames.size()); ++i) {
+ vJointNames.PushBack(StringRef(b.jointNames[i]->jointName), w.mAl);
+ }
+ obj.AddMember("jointNames", vJointNames, w.mAl);
+
+ if (b.bindShapeMatrix.isPresent) {
+ Value val;
+ obj.AddMember("bindShapeMatrix", MakeValue(val, b.bindShapeMatrix.value, w.mAl).Move(), w.mAl);
+ }
+
+ if (b.inverseBindMatrices) {
+ obj.AddMember("inverseBindMatrices", Value(b.inverseBindMatrices->id, w.mAl).Move(), w.mAl);
+ }
+
+ }
+
+ inline void Write(Value& /*obj*/, Technique& /*b*/, AssetWriter& /*w*/)
+ {
+
+ }
+
+ inline void Write(Value& obj, Texture& tex, AssetWriter& w)
+ {
+ if (tex.source) {
+ obj.AddMember("source", Value(tex.source->id, w.mAl).Move(), w.mAl);
+ }
+ if (tex.sampler) {
+ obj.AddMember("sampler", Value(tex.sampler->id, w.mAl).Move(), w.mAl);
+ }
+ }
+
+ inline void Write(Value& /*obj*/, Light& /*b*/, AssetWriter& /*w*/)
+ {
+
+ }
+
+
+ inline AssetWriter::AssetWriter(Asset& a)
+ : mDoc()
+ , mAsset(a)
+ , mAl(mDoc.GetAllocator())
+ {
+ mDoc.SetObject();
+
+ WriteMetadata();
+ WriteExtensionsUsed();
+
+ // Dump the contents of the dictionaries
+ for (size_t i = 0; i < a.mDicts.size(); ++i) {
+ a.mDicts[i]->WriteObjects(*this);
+ }
+
+ // Add the target scene field
+ if (mAsset.scene) {
+ mDoc.AddMember("scene", StringRef(mAsset.scene->id), mAl);
+ }
+ }
+
+ inline void AssetWriter::WriteFile(const char* path)
+ {
+ std::unique_ptr<IOStream> jsonOutFile(mAsset.OpenFile(path, "wt", true));
+
+ if (jsonOutFile == 0) {
+ throw DeadlyExportError("Could not open output file: " + std::string(path));
+ }
+
+ StringBuffer docBuffer;
+
+ PrettyWriter<StringBuffer> writer(docBuffer);
+ if (!mDoc.Accept(writer)) {
+ throw DeadlyExportError("Failed to write scene data!");
+ }
+
+ if (jsonOutFile->Write(docBuffer.GetString(), docBuffer.GetSize(), 1) != 1) {
+ throw DeadlyExportError("Failed to write scene data!");
+ }
+
+ // Write buffer data to separate .bin files
+ for (unsigned int i = 0; i < mAsset.buffers.Size(); ++i) {
+ Ref<Buffer> b = mAsset.buffers.Get(i);
+
+ std::string binPath = b->GetURI();
+
+ std::unique_ptr<IOStream> binOutFile(mAsset.OpenFile(binPath, "wb", true));
+
+ if (binOutFile == 0) {
+ throw DeadlyExportError("Could not open output file: " + binPath);
+ }
+
+ if (b->byteLength > 0) {
+ if (binOutFile->Write(b->GetPointer(), b->byteLength, 1) != 1) {
+ throw DeadlyExportError("Failed to write binary file: " + binPath);
+ }
+ }
+ }
+ }
+
+ inline void AssetWriter::WriteGLBFile(const char* path)
+ {
+ std::unique_ptr<IOStream> outfile(mAsset.OpenFile(path, "wb", true));
+
+ if (outfile == 0) {
+ throw DeadlyExportError("Could not open output file: " + std::string(path));
+ }
+
+ // we will write the header later, skip its size
+ outfile->Seek(sizeof(GLB_Header), aiOrigin_SET);
+
+ StringBuffer docBuffer;
+ Writer<StringBuffer> writer(docBuffer);
+ if (!mDoc.Accept(writer)) {
+ throw DeadlyExportError("Failed to write scene data!");
+ }
+
+ if (outfile->Write(docBuffer.GetString(), docBuffer.GetSize(), 1) != 1) {
+ throw DeadlyExportError("Failed to write scene data!");
+ }
+
+ WriteBinaryData(outfile.get(), docBuffer.GetSize());
+ }
+
+ inline void AssetWriter::WriteBinaryData(IOStream* outfile, size_t sceneLength)
+ {
+ //
+ // write the body data
+ //
+
+ size_t bodyLength = 0;
+ if (Ref<Buffer> b = mAsset.GetBodyBuffer()) {
+ bodyLength = b->byteLength;
+
+ if (bodyLength > 0) {
+ size_t bodyOffset = sizeof(GLB_Header) + sceneLength;
+ bodyOffset = (bodyOffset + 3) & ~3; // Round up to next multiple of 4
+
+ outfile->Seek(bodyOffset, aiOrigin_SET);
+
+ if (outfile->Write(b->GetPointer(), b->byteLength, 1) != 1) {
+ throw DeadlyExportError("Failed to write body data!");
+ }
+ }
+ }
+
+ //
+ // write the header
+ //
+
+ GLB_Header header;
+ memcpy(header.magic, AI_GLB_MAGIC_NUMBER, sizeof(header.magic));
+
+ header.version = 1;
+ AI_SWAP4(header.version);
+
+ header.length = uint32_t(sizeof(header) + sceneLength + bodyLength);
+ AI_SWAP4(header.length);
+
+ header.sceneLength = uint32_t(sceneLength);
+ AI_SWAP4(header.sceneLength);
+
+ header.sceneFormat = SceneFormat_JSON;
+ AI_SWAP4(header.sceneFormat);
+
+ outfile->Seek(0, aiOrigin_SET);
+
+ if (outfile->Write(&header, 1, sizeof(header)) != sizeof(header)) {
+ throw DeadlyExportError("Failed to write the header!");
+ }
+ }
+
+
+ inline void AssetWriter::WriteMetadata()
+ {
+ Value asset;
+ asset.SetObject();
+ asset.AddMember("version", Value(mAsset.asset.version, mAl).Move(), mAl);
+ asset.AddMember("generator", Value(mAsset.asset.generator, mAl).Move(), mAl);
+ if (!mAsset.asset.copyright.empty())
+ asset.AddMember("copyright", Value(mAsset.asset.copyright, mAl).Move(), mAl);
+
+ mDoc.AddMember("asset", asset, mAl);
+ }
+
+ inline void AssetWriter::WriteExtensionsUsed()
+ {
+ Value exts;
+ exts.SetArray();
+ {
+ if (false)
+ exts.PushBack(StringRef("KHR_binary_glTF"), mAl);
+
+ if (false)
+ exts.PushBack(StringRef("KHR_materials_common"), mAl);
+ }
+
+ if (!exts.Empty())
+ mDoc.AddMember("extensionsUsed", exts, mAl);
+ }
+
+ template<class T>
+ void AssetWriter::WriteObjects(LazyDict<T>& d)
+ {
+ if (d.mObjs.empty()) return;
+
+ Value* container = &mDoc;
+
+ if (d.mExtId) {
+ Value* exts = FindObject(mDoc, "extensions");
+ if (!exts) {
+ mDoc.AddMember("extensions", Value().SetObject().Move(), mDoc.GetAllocator());
+ exts = FindObject(mDoc, "extensions");
+ }
+
+ if (!(container = FindObject(*exts, d.mExtId))) {
+ exts->AddMember(StringRef(d.mExtId), Value().SetObject().Move(), mDoc.GetAllocator());
+ container = FindObject(*exts, d.mExtId);
+ }
+ }
+
+ Value* dict;
+ if (!(dict = FindObject(*container, d.mDictId))) {
+ container->AddMember(StringRef(d.mDictId), Value().SetObject().Move(), mDoc.GetAllocator());
+ dict = FindObject(*container, d.mDictId);
+ }
+
+ for (size_t i = 0; i < d.mObjs.size(); ++i) {
+ if (d.mObjs[i]->IsSpecial()) continue;
+
+ Value obj;
+ obj.SetObject();
+
+ if (!d.mObjs[i]->name.empty()) {
+ obj.AddMember("name", StringRef(d.mObjs[i]->name.c_str()), mAl);
+ }
+
+ Write(obj, *d.mObjs[i], *this);
+
+ dict->AddMember(StringRef(d.mObjs[i]->id), obj, mAl);
+ }
+ }
+
+ template<class T>
+ void WriteLazyDict(LazyDict<T>& d, AssetWriter& w)
+ {
+ w.WriteObjects(d);
+ }
+
+#if _MSC_VER
+# pragma warning(pop)
+#endif // _WIN32
+
+}
diff --git a/libs/assimp/code/AssetLib/glTF/glTFCommon.cpp b/libs/assimp/code/AssetLib/glTF/glTFCommon.cpp
new file mode 100644
index 0000000..fea680c
--- /dev/null
+++ b/libs/assimp/code/AssetLib/glTF/glTFCommon.cpp
@@ -0,0 +1,117 @@
+/*
+Open Asset Import Library (assimp)
+----------------------------------------------------------------------
+
+Copyright (c) 2006-2022, assimp team
+
+All rights reserved.
+
+Redistribution and use of this software in source and binary forms,
+with or without modification, are permitted provided that the
+following conditions are met:
+
+* Redistributions of source code must retain the above
+copyright notice, this list of conditions and the
+following disclaimer.
+
+* Redistributions in binary form must reproduce the above
+copyright notice, this list of conditions and the
+following disclaimer in the documentation and/or other
+materials provided with the distribution.
+
+* Neither the name of the assimp team, nor the names of its
+contributors may be used to endorse or promote products
+derived from this software without specific prior
+written permission of the assimp team.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+----------------------------------------------------------------------
+*/
+#ifndef ASSIMP_BUILD_NO_GLTF_IMPORTER
+
+#include "AssetLib/glTF/glTFCommon.h"
+
+namespace glTFCommon {
+
+using namespace glTFCommon::Util;
+
+namespace Util {
+
+bool ParseDataURI(const char *const_uri, size_t uriLen, DataURI &out) {
+ if (nullptr == const_uri) {
+ return false;
+ }
+
+ if (const_uri[0] != 0x10) { // we already parsed this uri?
+ if (strncmp(const_uri, "data:", 5) != 0) // not a data uri?
+ return false;
+ }
+
+ // set defaults
+ out.mediaType = "text/plain";
+ out.charset = "US-ASCII";
+ out.base64 = false;
+
+ char *uri = const_cast<char *>(const_uri);
+ if (uri[0] != 0x10) {
+ uri[0] = 0x10;
+ uri[1] = uri[2] = uri[3] = uri[4] = 0;
+
+ size_t i = 5, j;
+ if (uri[i] != ';' && uri[i] != ',') { // has media type?
+ uri[1] = char(i);
+ for (;i < uriLen && uri[i] != ';' && uri[i] != ','; ++i) {
+ // nothing to do!
+ }
+ }
+ while (i < uriLen && uri[i] == ';') {
+ uri[i++] = '\0';
+ for (j = i; i < uriLen && uri[i] != ';' && uri[i] != ','; ++i) {
+ // nothing to do!
+ }
+
+ if (strncmp(uri + j, "charset=", 8) == 0) {
+ uri[2] = char(j + 8);
+ } else if (strncmp(uri + j, "base64", 6) == 0) {
+ uri[3] = char(j);
+ }
+ }
+ if (i < uriLen) {
+ uri[i++] = '\0';
+ uri[4] = char(i);
+ } else {
+ uri[1] = uri[2] = uri[3] = 0;
+ uri[4] = 5;
+ }
+ }
+
+ if (uri[1] != 0) {
+ out.mediaType = uri + uri[1];
+ }
+ if (uri[2] != 0) {
+ out.charset = uri + uri[2];
+ }
+ if (uri[3] != 0) {
+ out.base64 = true;
+ }
+ out.data = uri + uri[4];
+ out.dataLength = (uri + uriLen) - out.data;
+
+ return true;
+}
+
+} // namespace Util
+} // namespace glTFCommon
+
+#endif
diff --git a/libs/assimp/code/AssetLib/glTF/glTFCommon.h b/libs/assimp/code/AssetLib/glTF/glTFCommon.h
new file mode 100644
index 0000000..edc3c7e
--- /dev/null
+++ b/libs/assimp/code/AssetLib/glTF/glTFCommon.h
@@ -0,0 +1,520 @@
+/*
+Open Asset Import Library (assimp)
+----------------------------------------------------------------------
+
+Copyright (c) 2006-2022, assimp team
+
+All rights reserved.
+
+Redistribution and use of this software in source and binary forms,
+with or without modification, are permitted provided that the
+following conditions are met:
+
+* Redistributions of source code must retain the above
+copyright notice, this list of conditions and the
+following disclaimer.
+
+* Redistributions in binary form must reproduce the above
+copyright notice, this list of conditions and the
+following disclaimer in the documentation and/or other
+materials provided with the distribution.
+
+* Neither the name of the assimp team, nor the names of its
+contributors may be used to endorse or promote products
+derived from this software without specific prior
+written permission of the assimp team.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+----------------------------------------------------------------------
+*/
+#ifndef AI_GLFTCOMMON_H_INC
+#define AI_GLFTCOMMON_H_INC
+
+#ifndef ASSIMP_BUILD_NO_GLTF_IMPORTER
+
+#include <assimp/Exceptional.h>
+
+#include <algorithm>
+#include <list>
+#include <map>
+#include <stdexcept>
+#include <string>
+#include <vector>
+
+#include <rapidjson/document.h>
+#include <rapidjson/error/en.h>
+#include <rapidjson/rapidjson.h>
+
+// clang-format off
+
+#ifdef ASSIMP_API
+# include <assimp/ByteSwapper.h>
+# include <assimp/DefaultIOSystem.h>
+# include <memory>
+#else
+# include <memory>
+# define AI_SWAP4(p)
+# define ai_assert
+#endif
+
+#if _MSC_VER > 1500 || (defined __GNUC___)
+# define ASSIMP_GLTF_USE_UNORDERED_MULTIMAP
+#else
+# define gltf_unordered_map map
+#endif
+
+#ifdef ASSIMP_GLTF_USE_UNORDERED_MULTIMAP
+# include <unordered_map>
+# if defined(_MSC_VER) && _MSC_VER <= 1600
+# define gltf_unordered_map tr1::unordered_map
+# else
+# define gltf_unordered_map unordered_map
+# endif
+#endif
+// clang-format on
+
+
+namespace glTFCommon {
+
+using rapidjson::Document;
+using rapidjson::Value;
+
+#ifdef ASSIMP_API
+using Assimp::IOStream;
+using Assimp::IOSystem;
+using std::shared_ptr;
+#else
+using std::shared_ptr;
+
+typedef std::runtime_error DeadlyImportError;
+typedef std::runtime_error DeadlyExportError;
+
+enum aiOrigin {
+ aiOrigin_SET = 0,
+ aiOrigin_CUR = 1,
+ aiOrigin_END = 2
+};
+
+class IOSystem;
+
+class IOStream {
+public:
+ IOStream(FILE *file) :
+ f(file) {}
+ ~IOStream() {
+ fclose(f);
+ }
+
+ size_t Read(void *b, size_t sz, size_t n) { return fread(b, sz, n, f); }
+ size_t Write(const void *b, size_t sz, size_t n) { return fwrite(b, sz, n, f); }
+ int Seek(size_t off, aiOrigin orig) { return fseek(f, off, int(orig)); }
+ size_t Tell() const { return ftell(f); }
+
+ size_t FileSize() {
+ long p = Tell(), len = (Seek(0, aiOrigin_END), Tell());
+ return size_t((Seek(p, aiOrigin_SET), len));
+ }
+
+private:
+ FILE *f;
+};
+#endif
+
+// Vec/matrix types, as raw float arrays
+typedef float(vec3)[3];
+typedef float(vec4)[4];
+typedef float(mat4)[16];
+
+inline void CopyValue(const glTFCommon::vec3 &v, aiColor4D &out) {
+ out.r = v[0];
+ out.g = v[1];
+ out.b = v[2];
+ out.a = 1.0;
+}
+
+inline void CopyValue(const glTFCommon::vec4 &v, aiColor4D &out) {
+ out.r = v[0];
+ out.g = v[1];
+ out.b = v[2];
+ out.a = v[3];
+}
+
+inline void CopyValue(const glTFCommon::vec4 &v, aiColor3D &out) {
+ out.r = v[0];
+ out.g = v[1];
+ out.b = v[2];
+}
+
+inline void CopyValue(const glTFCommon::vec3 &v, aiColor3D &out) {
+ out.r = v[0];
+ out.g = v[1];
+ out.b = v[2];
+}
+
+inline void CopyValue(const glTFCommon::vec3 &v, aiVector3D &out) {
+ out.x = v[0];
+ out.y = v[1];
+ out.z = v[2];
+}
+
+inline void CopyValue(const glTFCommon::vec4 &v, aiQuaternion &out) {
+ out.x = v[0];
+ out.y = v[1];
+ out.z = v[2];
+ out.w = v[3];
+}
+
+inline void CopyValue(const glTFCommon::mat4 &v, aiMatrix4x4 &o) {
+ o.a1 = v[0];
+ o.b1 = v[1];
+ o.c1 = v[2];
+ o.d1 = v[3];
+ o.a2 = v[4];
+ o.b2 = v[5];
+ o.c2 = v[6];
+ o.d2 = v[7];
+ o.a3 = v[8];
+ o.b3 = v[9];
+ o.c3 = v[10];
+ o.d3 = v[11];
+ o.a4 = v[12];
+ o.b4 = v[13];
+ o.c4 = v[14];
+ o.d4 = v[15];
+}
+
+#if _MSC_VER
+# pragma warning(push)
+# pragma warning(disable : 4310)
+#endif // _MSC_VER
+
+inline std::string getCurrentAssetDir(const std::string &pFile) {
+ int pos = std::max(int(pFile.rfind('/')), int(pFile.rfind('\\')));
+ if (pos == int(std::string::npos)) {
+ return std::string();
+ }
+
+ return pFile.substr(0, pos + 1);
+}
+#if _MSC_VER
+# pragma warning(pop)
+#endif // _MSC_VER
+
+namespace Util {
+
+void EncodeBase64(const uint8_t *in, size_t inLength, std::string &out);
+
+size_t DecodeBase64(const char *in, size_t inLength, uint8_t *&out);
+
+inline size_t DecodeBase64(const char *in, uint8_t *&out) {
+ return DecodeBase64(in, strlen(in), out);
+}
+
+struct DataURI {
+ const char *mediaType;
+ const char *charset;
+ bool base64;
+ const char *data;
+ size_t dataLength;
+};
+
+//! Check if a uri is a data URI
+bool ParseDataURI(const char *const_uri, size_t uriLen, DataURI &out);
+
+} // namespace Util
+
+#define CHECK_EXT(EXT) \
+ if (exts.find(#EXT) != exts.end()) extensionsUsed.EXT = true;
+
+//! Helper struct to represent values that might not be present
+template <class T>
+struct Nullable {
+ T value;
+ bool isPresent;
+
+ Nullable() :
+ isPresent(false) {}
+ Nullable(T &val) :
+ value(val),
+ isPresent(true) {}
+};
+
+//! A reference to one top-level object, which is valid
+//! until the Asset instance is destroyed
+template <class T>
+class Ref {
+ std::vector<T *> *vector;
+ unsigned int index;
+
+public:
+ Ref() :
+ vector(0),
+ index(0) {}
+ Ref(std::vector<T *> &vec, unsigned int idx) :
+ vector(&vec),
+ index(idx) {}
+
+ inline unsigned int GetIndex() const { return index; }
+
+ operator bool() const { return vector != nullptr && index < vector->size(); }
+
+ T *operator->() { return (*vector)[index]; }
+
+ T &operator*() { return *((*vector)[index]); }
+};
+
+//
+// JSON Value reading helpers
+//
+
+template <class T>
+struct ReadHelper {
+ static bool Read(Value &val, T &out) {
+ return val.IsInt() ? out = static_cast<T>(val.GetInt()), true : false;
+ }
+};
+
+template <>
+struct ReadHelper<bool> {
+ static bool Read(Value &val, bool &out) {
+ return val.IsBool() ? out = val.GetBool(), true : false;
+ }
+};
+
+template <>
+struct ReadHelper<float> {
+ static bool Read(Value &val, float &out) {
+ return val.IsNumber() ? out = static_cast<float>(val.GetDouble()), true : false;
+ }
+};
+
+template <unsigned int N>
+struct ReadHelper<float[N]> {
+ static bool Read(Value &val, float (&out)[N]) {
+ if (!val.IsArray() || val.Size() != N) return false;
+ for (unsigned int i = 0; i < N; ++i) {
+ if (val[i].IsNumber())
+ out[i] = static_cast<float>(val[i].GetDouble());
+ }
+ return true;
+ }
+};
+
+template <>
+struct ReadHelper<const char *> {
+ static bool Read(Value &val, const char *&out) {
+ return val.IsString() ? (out = val.GetString(), true) : false;
+ }
+};
+
+template <>
+struct ReadHelper<std::string> {
+ static bool Read(Value &val, std::string &out) {
+ return val.IsString() ? (out = std::string(val.GetString(), val.GetStringLength()), true) : false;
+ }
+};
+
+template <class T>
+struct ReadHelper<Nullable<T>> {
+ static bool Read(Value &val, Nullable<T> &out) {
+ return out.isPresent = ReadHelper<T>::Read(val, out.value);
+ }
+};
+
+template <>
+struct ReadHelper<uint64_t> {
+ static bool Read(Value &val, uint64_t &out) {
+ return val.IsUint64() ? out = val.GetUint64(), true : false;
+ }
+};
+
+template <>
+struct ReadHelper<int64_t> {
+ static bool Read(Value &val, int64_t &out) {
+ return val.IsInt64() ? out = val.GetInt64(), true : false;
+ }
+};
+
+template <class T>
+inline static bool ReadValue(Value &val, T &out) {
+ return ReadHelper<T>::Read(val, out);
+}
+
+template <class T>
+inline static bool ReadMember(Value &obj, const char *id, T &out) {
+ if (!obj.IsObject()) {
+ return false;
+ }
+ Value::MemberIterator it = obj.FindMember(id);
+ if (it != obj.MemberEnd()) {
+ return ReadHelper<T>::Read(it->value, out);
+ }
+ return false;
+}
+
+template <class T>
+inline static T MemberOrDefault(Value &obj, const char *id, T defaultValue) {
+ T out;
+ return ReadMember(obj, id, out) ? out : defaultValue;
+}
+
+inline Value *FindMember(Value &val, const char *id) {
+ if (!val.IsObject()) {
+ return nullptr;
+ }
+ Value::MemberIterator it = val.FindMember(id);
+ return (it != val.MemberEnd()) ? &it->value : nullptr;
+}
+
+template <int N>
+inline void throwUnexpectedTypeError(const char (&expectedTypeName)[N], const char *memberId, const char *context, const char *extraContext) {
+ std::string fullContext = context;
+ if (extraContext && (strlen(extraContext) > 0)) {
+ fullContext = fullContext + " (" + extraContext + ")";
+ }
+ throw DeadlyImportError("Member \"", memberId, "\" was not of type \"", expectedTypeName, "\" when reading ", fullContext);
+}
+
+// Look-up functions with type checks. Context and extra context help the user identify the problem if there's an error.
+
+inline Value *FindStringInContext(Value &val, const char *memberId, const char *context, const char *extraContext = nullptr) {
+ if (!val.IsObject()) {
+ return nullptr;
+ }
+ Value::MemberIterator it = val.FindMember(memberId);
+ if (it == val.MemberEnd()) {
+ return nullptr;
+ }
+ if (!it->value.IsString()) {
+ throwUnexpectedTypeError("string", memberId, context, extraContext);
+ }
+ return &it->value;
+}
+
+inline Value *FindNumberInContext(Value &val, const char *memberId, const char *context, const char *extraContext = nullptr) {
+ if (!val.IsObject()) {
+ return nullptr;
+ }
+ Value::MemberIterator it = val.FindMember(memberId);
+ if (it == val.MemberEnd()) {
+ return nullptr;
+ }
+ if (!it->value.IsNumber()) {
+ throwUnexpectedTypeError("number", memberId, context, extraContext);
+ }
+ return &it->value;
+}
+
+inline Value *FindUIntInContext(Value &val, const char *memberId, const char *context, const char *extraContext = nullptr) {
+ if (!val.IsObject()) {
+ return nullptr;
+ }
+ Value::MemberIterator it = val.FindMember(memberId);
+ if (it == val.MemberEnd()) {
+ return nullptr;
+ }
+ if (!it->value.IsUint()) {
+ throwUnexpectedTypeError("uint", memberId, context, extraContext);
+ }
+ return &it->value;
+}
+
+inline Value *FindArrayInContext(Value &val, const char *memberId, const char *context, const char *extraContext = nullptr) {
+ if (!val.IsObject()) {
+ return nullptr;
+ }
+ Value::MemberIterator it = val.FindMember(memberId);
+ if (it == val.MemberEnd()) {
+ return nullptr;
+ }
+ if (!it->value.IsArray()) {
+ throwUnexpectedTypeError("array", memberId, context, extraContext);
+ }
+ return &it->value;
+}
+
+inline Value *FindObjectInContext(Value &val, const char *memberId, const char *context, const char *extraContext = nullptr) {
+ if (!val.IsObject()) {
+ return nullptr;
+ }
+ Value::MemberIterator it = val.FindMember(memberId);
+ if (it == val.MemberEnd()) {
+ return nullptr;
+ }
+ if (!it->value.IsObject()) {
+ throwUnexpectedTypeError("object", memberId, context, extraContext);
+ }
+ return &it->value;
+}
+
+inline Value *FindExtensionInContext(Value &val, const char *extensionId, const char *context, const char *extraContext = nullptr) {
+ if (Value *extensionList = FindObjectInContext(val, "extensions", context, extraContext)) {
+ if (Value *extension = FindObjectInContext(*extensionList, extensionId, context, extraContext)) {
+ return extension;
+ }
+ }
+ return nullptr;
+}
+
+// Overloads when the value is the document.
+
+inline Value *FindString(Document &doc, const char *memberId) {
+ return FindStringInContext(doc, memberId, "the document");
+}
+
+inline Value *FindNumber(Document &doc, const char *memberId) {
+ return FindNumberInContext(doc, memberId, "the document");
+}
+
+inline Value *FindUInt(Document &doc, const char *memberId) {
+ return FindUIntInContext(doc, memberId, "the document");
+}
+
+inline Value *FindArray(Document &val, const char *memberId) {
+ return FindArrayInContext(val, memberId, "the document");
+}
+
+inline Value *FindObject(Document &doc, const char *memberId) {
+ return FindObjectInContext(doc, memberId, "the document");
+}
+
+inline Value *FindExtension(Value &val, const char *extensionId) {
+ return FindExtensionInContext(val, extensionId, "the document");
+}
+
+inline Value *FindString(Value &val, const char *id) {
+ Value::MemberIterator it = val.FindMember(id);
+ return (it != val.MemberEnd() && it->value.IsString()) ? &it->value : 0;
+}
+
+inline Value *FindObject(Value &val, const char *id) {
+ Value::MemberIterator it = val.FindMember(id);
+ return (it != val.MemberEnd() && it->value.IsObject()) ? &it->value : 0;
+}
+
+inline Value *FindArray(Value &val, const char *id) {
+ Value::MemberIterator it = val.FindMember(id);
+ return (it != val.MemberEnd() && it->value.IsArray()) ? &it->value : 0;
+}
+
+inline Value *FindNumber(Value &val, const char *id) {
+ Value::MemberIterator it = val.FindMember(id);
+ return (it != val.MemberEnd() && it->value.IsNumber()) ? &it->value : 0;
+}
+
+} // namespace glTFCommon
+
+#endif // ASSIMP_BUILD_NO_GLTF_IMPORTER
+
+#endif // AI_GLFTCOMMON_H_INC
diff --git a/libs/assimp/code/AssetLib/glTF/glTFExporter.cpp b/libs/assimp/code/AssetLib/glTF/glTFExporter.cpp
new file mode 100644
index 0000000..afcfb12
--- /dev/null
+++ b/libs/assimp/code/AssetLib/glTF/glTFExporter.cpp
@@ -0,0 +1,1065 @@
+/*
+Open Asset Import Library (assimp)
+----------------------------------------------------------------------
+
+Copyright (c) 2006-2022, assimp team
+
+
+All rights reserved.
+
+Redistribution and use of this software in source and binary forms,
+with or without modification, are permitted provided that the
+following conditions are met:
+
+* Redistributions of source code must retain the above
+copyright notice, this list of conditions and the
+following disclaimer.
+
+* Redistributions in binary form must reproduce the above
+copyright notice, this list of conditions and the
+following disclaimer in the documentation and/or other
+materials provided with the distribution.
+
+* Neither the name of the assimp team, nor the names of its
+contributors may be used to endorse or promote products
+derived from this software without specific prior
+written permission of the assimp team.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+----------------------------------------------------------------------
+*/
+#ifndef ASSIMP_BUILD_NO_EXPORT
+#ifndef ASSIMP_BUILD_NO_GLTF_EXPORTER
+
+#include "AssetLib/glTF/glTFExporter.h"
+#include "AssetLib/glTF/glTFAssetWriter.h"
+#include "PostProcessing/SplitLargeMeshes.h"
+
+#include <assimp/commonMetaData.h>
+#include <assimp/Exceptional.h>
+#include <assimp/StringComparison.h>
+#include <assimp/ByteSwapper.h>
+#include <assimp/SceneCombiner.h>
+#include <assimp/version.h>
+#include <assimp/IOSystem.hpp>
+#include <assimp/Exporter.hpp>
+#include <assimp/material.h>
+#include <assimp/scene.h>
+
+// Header files, standard library.
+#include <memory>
+#include <limits>
+#include <inttypes.h>
+
+#ifdef ASSIMP_IMPORTER_GLTF_USE_OPEN3DGC
+ // Header files, Open3DGC.
+# include <Open3DGC/o3dgcSC3DMCEncoder.h>
+#endif
+
+using namespace rapidjson;
+
+using namespace Assimp;
+using namespace glTF;
+
+namespace Assimp {
+
+ // ------------------------------------------------------------------------------------------------
+ // Worker function for exporting a scene to GLTF. Prototyped and registered in Exporter.cpp
+ void ExportSceneGLTF(const char* pFile, IOSystem* pIOSystem, const aiScene* pScene, const ExportProperties* pProperties)
+ {
+ // invoke the exporter
+ glTFExporter exporter(pFile, pIOSystem, pScene, pProperties, false);
+ }
+
+ // ------------------------------------------------------------------------------------------------
+ // Worker function for exporting a scene to GLB. Prototyped and registered in Exporter.cpp
+ void ExportSceneGLB(const char* pFile, IOSystem* pIOSystem, const aiScene* pScene, const ExportProperties* pProperties)
+ {
+ // invoke the exporter
+ glTFExporter exporter(pFile, pIOSystem, pScene, pProperties, true);
+ }
+
+} // end of namespace Assimp
+
+glTFExporter::glTFExporter(const char* filename, IOSystem* pIOSystem, const aiScene* pScene,
+ const ExportProperties* pProperties, bool isBinary)
+ : mFilename(filename)
+ , mIOSystem(pIOSystem)
+ , mProperties(pProperties)
+{
+ aiScene* sceneCopy_tmp;
+ SceneCombiner::CopyScene(&sceneCopy_tmp, pScene);
+
+ SplitLargeMeshesProcess_Triangle tri_splitter;
+ tri_splitter.SetLimit(0xffff);
+ tri_splitter.Execute(sceneCopy_tmp);
+
+ SplitLargeMeshesProcess_Vertex vert_splitter;
+ vert_splitter.SetLimit(0xffff);
+ vert_splitter.Execute(sceneCopy_tmp);
+
+ mScene.reset(sceneCopy_tmp);
+
+ mAsset.reset( new glTF::Asset( pIOSystem ) );
+
+ if (isBinary) {
+ mAsset->SetAsBinary();
+ }
+
+ ExportMetadata();
+
+ //for (unsigned int i = 0; i < pScene->mNumCameras; ++i) {}
+
+ //for (unsigned int i = 0; i < pScene->mNumLights; ++i) {}
+
+ ExportMaterials();
+
+ if (mScene->mRootNode) {
+ ExportNodeHierarchy(mScene->mRootNode);
+ }
+
+ ExportMeshes();
+
+ //for (unsigned int i = 0; i < pScene->mNumTextures; ++i) {}
+
+ ExportScene();
+
+ ExportAnimations();
+
+ glTF::AssetWriter writer(*mAsset);
+
+ if (isBinary) {
+ writer.WriteGLBFile(filename);
+ } else {
+ writer.WriteFile(filename);
+ }
+}
+
+/*
+ * Copy a 4x4 matrix from struct aiMatrix to typedef mat4.
+ * Also converts from row-major to column-major storage.
+ */
+static void CopyValue(const aiMatrix4x4& v, glTF::mat4& o)
+{
+ o[ 0] = v.a1; o[ 1] = v.b1; o[ 2] = v.c1; o[ 3] = v.d1;
+ o[ 4] = v.a2; o[ 5] = v.b2; o[ 6] = v.c2; o[ 7] = v.d2;
+ o[ 8] = v.a3; o[ 9] = v.b3; o[10] = v.c3; o[11] = v.d3;
+ o[12] = v.a4; o[13] = v.b4; o[14] = v.c4; o[15] = v.d4;
+}
+
+static void CopyValue(const aiMatrix4x4& v, aiMatrix4x4& o)
+{
+ memcpy(&o, &v, sizeof(aiMatrix4x4));
+}
+
+static void IdentityMatrix4(glTF::mat4& o)
+{
+ o[ 0] = 1; o[ 1] = 0; o[ 2] = 0; o[ 3] = 0;
+ o[ 4] = 0; o[ 5] = 1; o[ 6] = 0; o[ 7] = 0;
+ o[ 8] = 0; o[ 9] = 0; o[10] = 1; o[11] = 0;
+ o[12] = 0; o[13] = 0; o[14] = 0; o[15] = 1;
+}
+
+template<typename T>
+void SetAccessorRange(Ref<Accessor> acc, void* data, unsigned int count,
+ unsigned int numCompsIn, unsigned int numCompsOut)
+{
+ ai_assert(numCompsOut <= numCompsIn);
+
+ // Allocate and initialize with large values.
+ for (unsigned int i = 0 ; i < numCompsOut ; i++) {
+ acc->min.push_back( std::numeric_limits<double>::max());
+ acc->max.push_back(-std::numeric_limits<double>::max());
+ }
+
+ size_t totalComps = count * numCompsIn;
+ T* buffer_ptr = static_cast<T*>(data);
+ T* buffer_end = buffer_ptr + totalComps;
+
+ // Search and set extreme values.
+ for (; buffer_ptr < buffer_end ; buffer_ptr += numCompsIn) {
+ for (unsigned int j = 0 ; j < numCompsOut ; j++) {
+ double valueTmp = buffer_ptr[j];
+
+ if (valueTmp < acc->min[j]) {
+ acc->min[j] = valueTmp;
+ }
+ if (valueTmp > acc->max[j]) {
+ acc->max[j] = valueTmp;
+ }
+ }
+ }
+}
+
+inline void SetAccessorRange(ComponentType compType, Ref<Accessor> acc, void* data,
+ unsigned int count, unsigned int numCompsIn, unsigned int numCompsOut)
+{
+ switch (compType) {
+ case ComponentType_SHORT:
+ SetAccessorRange<short>(acc, data, count, numCompsIn, numCompsOut);
+ return;
+ case ComponentType_UNSIGNED_SHORT:
+ SetAccessorRange<unsigned short>(acc, data, count, numCompsIn, numCompsOut);
+ return;
+ case ComponentType_UNSIGNED_INT:
+ SetAccessorRange<unsigned int>(acc, data, count, numCompsIn, numCompsOut);
+ return;
+ case ComponentType_FLOAT:
+ SetAccessorRange<float>(acc, data, count, numCompsIn, numCompsOut);
+ return;
+ case ComponentType_BYTE:
+ SetAccessorRange<int8_t>(acc, data, count, numCompsIn, numCompsOut);
+ return;
+ case ComponentType_UNSIGNED_BYTE:
+ SetAccessorRange<uint8_t>(acc, data, count, numCompsIn, numCompsOut);
+ return;
+ }
+}
+
+inline Ref<Accessor> ExportData(Asset &a, std::string &meshName, Ref<Buffer> &buffer,
+ unsigned int count, void *data, AttribType::Value typeIn, AttribType::Value typeOut, ComponentType compType, BufferViewTarget target = BufferViewTarget_NONE) {
+ if (!count || !data) return Ref<Accessor>();
+
+ unsigned int numCompsIn = AttribType::GetNumComponents(typeIn);
+ unsigned int numCompsOut = AttribType::GetNumComponents(typeOut);
+ unsigned int bytesPerComp = ComponentTypeSize(compType);
+
+ size_t offset = buffer->byteLength;
+ // make sure offset is correctly byte-aligned, as required by spec
+ size_t padding = offset % bytesPerComp;
+ offset += padding;
+ size_t length = count * numCompsOut * bytesPerComp;
+ buffer->Grow(length + padding);
+
+ // bufferView
+ Ref<BufferView> bv = a.bufferViews.Create(a.FindUniqueID(meshName, "view"));
+ bv->buffer = buffer;
+ bv->byteOffset = unsigned(offset);
+ bv->byteLength = length; //! The target that the WebGL buffer should be bound to.
+ bv->target = target;
+
+ // accessor
+ Ref<Accessor> acc = a.accessors.Create(a.FindUniqueID(meshName, "accessor"));
+ acc->bufferView = bv;
+ acc->byteOffset = 0;
+ acc->byteStride = 0;
+ acc->componentType = compType;
+ acc->count = count;
+ acc->type = typeOut;
+
+ // calculate min and max values
+ SetAccessorRange(compType, acc, data, count, numCompsIn, numCompsOut);
+
+ // copy the data
+ acc->WriteData(count, data, numCompsIn*bytesPerComp);
+
+ return acc;
+}
+
+namespace {
+ void GetMatScalar(const aiMaterial* mat, float& val, const char* propName, int type, int idx) {
+ ai_assert( nullptr != mat );
+ if ( nullptr != mat ) {
+ mat->Get(propName, type, idx, val);
+ }
+ }
+}
+
+void glTFExporter::GetTexSampler(const aiMaterial* mat, glTF::TexProperty& prop)
+{
+ std::string samplerId = mAsset->FindUniqueID("", "sampler");
+ prop.texture->sampler = mAsset->samplers.Create(samplerId);
+
+ aiTextureMapMode mapU, mapV;
+ aiGetMaterialInteger(mat,AI_MATKEY_MAPPINGMODE_U_DIFFUSE(0),(int*)&mapU);
+ aiGetMaterialInteger(mat,AI_MATKEY_MAPPINGMODE_V_DIFFUSE(0),(int*)&mapV);
+
+ switch (mapU) {
+ case aiTextureMapMode_Wrap:
+ prop.texture->sampler->wrapS = SamplerWrap_Repeat;
+ break;
+ case aiTextureMapMode_Clamp:
+ prop.texture->sampler->wrapS = SamplerWrap_Clamp_To_Edge;
+ break;
+ case aiTextureMapMode_Mirror:
+ prop.texture->sampler->wrapS = SamplerWrap_Mirrored_Repeat;
+ break;
+ case aiTextureMapMode_Decal:
+ default:
+ prop.texture->sampler->wrapS = SamplerWrap_Repeat;
+ break;
+ };
+
+ switch (mapV) {
+ case aiTextureMapMode_Wrap:
+ prop.texture->sampler->wrapT = SamplerWrap_Repeat;
+ break;
+ case aiTextureMapMode_Clamp:
+ prop.texture->sampler->wrapT = SamplerWrap_Clamp_To_Edge;
+ break;
+ case aiTextureMapMode_Mirror:
+ prop.texture->sampler->wrapT = SamplerWrap_Mirrored_Repeat;
+ break;
+ case aiTextureMapMode_Decal:
+ default:
+ prop.texture->sampler->wrapT = SamplerWrap_Repeat;
+ break;
+ };
+
+ // Hard coded Texture filtering options because I do not know where to find them in the aiMaterial.
+ prop.texture->sampler->magFilter = SamplerMagFilter_Linear;
+ prop.texture->sampler->minFilter = SamplerMinFilter_Linear;
+}
+
+void glTFExporter::GetMatColorOrTex(const aiMaterial* mat, glTF::TexProperty& prop,
+ const char* propName, int type, int idx, aiTextureType tt) {
+ aiString tex;
+ aiColor4D col;
+ if (mat->GetTextureCount(tt) > 0) {
+ if (mat->Get(AI_MATKEY_TEXTURE(tt, 0), tex) == AI_SUCCESS) {
+ std::string path = tex.C_Str();
+
+ if (path.size() > 0) {
+ if (path[0] != '*') {
+ std::map<std::string, unsigned int>::iterator it = mTexturesByPath.find(path);
+ if (it != mTexturesByPath.end()) {
+ prop.texture = mAsset->textures.Get(it->second);
+ }
+ }
+
+ if (!prop.texture) {
+ std::string texId = mAsset->FindUniqueID("", "texture");
+ prop.texture = mAsset->textures.Create(texId);
+ mTexturesByPath[path] = prop.texture.GetIndex();
+
+ std::string imgId = mAsset->FindUniqueID("", "image");
+ prop.texture->source = mAsset->images.Create(imgId);
+
+ if (path[0] == '*') { // embedded
+ aiTexture* curTex = mScene->mTextures[atoi(&path[1])];
+
+ prop.texture->source->name = curTex->mFilename.C_Str();
+
+ uint8_t *data = reinterpret_cast<uint8_t *>(curTex->pcData);
+ prop.texture->source->SetData(data, curTex->mWidth, *mAsset);
+
+ if (curTex->achFormatHint[0]) {
+ std::string mimeType = "image/";
+ mimeType += (memcmp(curTex->achFormatHint, "jpg", 3) == 0) ? "jpeg" : curTex->achFormatHint;
+ prop.texture->source->mimeType = mimeType;
+ }
+ } else {
+ prop.texture->source->uri = path;
+ }
+
+ GetTexSampler(mat, prop);
+ }
+ }
+ }
+ }
+
+ if (mat->Get(propName, type, idx, col) == AI_SUCCESS) {
+ prop.color[0] = col.r;
+ prop.color[1] = col.g;
+ prop.color[2] = col.b;
+ prop.color[3] = col.a;
+ }
+}
+
+
+void glTFExporter::ExportMaterials()
+{
+ aiString aiName;
+ for (unsigned int i = 0; i < mScene->mNumMaterials; ++i) {
+ const aiMaterial* mat = mScene->mMaterials[i];
+
+
+ std::string name;
+ if (mat->Get(AI_MATKEY_NAME, aiName) == AI_SUCCESS) {
+ name = aiName.C_Str();
+ }
+ name = mAsset->FindUniqueID(name, "material");
+
+ Ref<Material> m = mAsset->materials.Create(name);
+
+ GetMatColorOrTex(mat, m->ambient, AI_MATKEY_COLOR_AMBIENT, aiTextureType_AMBIENT);
+ GetMatColorOrTex(mat, m->diffuse, AI_MATKEY_COLOR_DIFFUSE, aiTextureType_DIFFUSE);
+ GetMatColorOrTex(mat, m->specular, AI_MATKEY_COLOR_SPECULAR, aiTextureType_SPECULAR);
+ GetMatColorOrTex(mat, m->emission, AI_MATKEY_COLOR_EMISSIVE, aiTextureType_EMISSIVE);
+
+ m->transparent = mat->Get(AI_MATKEY_OPACITY, m->transparency) == aiReturn_SUCCESS && m->transparency != 1.0;
+
+ GetMatScalar(mat, m->shininess, AI_MATKEY_SHININESS);
+ }
+}
+
+/*
+ * Search through node hierarchy and find the node containing the given meshID.
+ * Returns true on success, and false otherwise.
+ */
+bool FindMeshNode(Ref<Node> &nodeIn, Ref<Node> &meshNode, const std::string &meshID) {
+ for (unsigned int i = 0; i < nodeIn->meshes.size(); ++i) {
+ if (meshID.compare(nodeIn->meshes[i]->id) == 0) {
+ meshNode = nodeIn;
+ return true;
+ }
+ }
+
+ for (unsigned int i = 0; i < nodeIn->children.size(); ++i) {
+ if(FindMeshNode(nodeIn->children[i], meshNode, meshID)) {
+ return true;
+ }
+ }
+
+ return false;
+}
+
+/*
+ * Find the root joint of the skeleton.
+ * Starts will any joint node and traces up the tree,
+ * until a parent is found that does not have a jointName.
+ * Returns the first parent Ref<Node> found that does not have a jointName.
+ */
+Ref<Node> FindSkeletonRootJoint(Ref<Skin>& skinRef)
+{
+ Ref<Node> startNodeRef;
+ Ref<Node> parentNodeRef;
+
+ // Arbitrarily use the first joint to start the search.
+ startNodeRef = skinRef->jointNames[0];
+ parentNodeRef = skinRef->jointNames[0];
+
+ do {
+ startNodeRef = parentNodeRef;
+ parentNodeRef = startNodeRef->parent;
+ } while (!parentNodeRef->jointName.empty());
+
+ return parentNodeRef;
+}
+
+void ExportSkin(Asset& mAsset, const aiMesh* aimesh, Ref<Mesh>& meshRef, Ref<Buffer>& bufferRef, Ref<Skin>& skinRef, std::vector<aiMatrix4x4>& inverseBindMatricesData)
+{
+ if (aimesh->mNumBones < 1) {
+ return;
+ }
+
+ // Store the vertex joint and weight data.
+ const size_t NumVerts( aimesh->mNumVertices );
+ vec4* vertexJointData = new vec4[ NumVerts ];
+ vec4* vertexWeightData = new vec4[ NumVerts ];
+ int* jointsPerVertex = new int[ NumVerts ];
+ for (size_t i = 0; i < NumVerts; ++i) {
+ jointsPerVertex[i] = 0;
+ for (size_t j = 0; j < 4; ++j) {
+ vertexJointData[i][j] = 0;
+ vertexWeightData[i][j] = 0;
+ }
+ }
+
+ for (unsigned int idx_bone = 0; idx_bone < aimesh->mNumBones; ++idx_bone) {
+ const aiBone* aib = aimesh->mBones[idx_bone];
+
+ // aib->mName =====> skinRef->jointNames
+ // Find the node with id = mName.
+ Ref<Node> nodeRef = mAsset.nodes.Get(aib->mName.C_Str());
+ nodeRef->jointName = nodeRef->id;
+
+ unsigned int jointNamesIndex = 0;
+ bool addJointToJointNames = true;
+ for ( unsigned int idx_joint = 0; idx_joint < skinRef->jointNames.size(); ++idx_joint) {
+ if (skinRef->jointNames[idx_joint]->jointName.compare(nodeRef->jointName) == 0) {
+ addJointToJointNames = false;
+ jointNamesIndex = idx_joint;
+ }
+ }
+
+ if (addJointToJointNames) {
+ skinRef->jointNames.push_back(nodeRef);
+
+ // aib->mOffsetMatrix =====> skinRef->inverseBindMatrices
+ aiMatrix4x4 tmpMatrix4;
+ CopyValue(aib->mOffsetMatrix, tmpMatrix4);
+ inverseBindMatricesData.push_back(tmpMatrix4);
+ jointNamesIndex = static_cast<unsigned int>(inverseBindMatricesData.size() - 1);
+ }
+
+ // aib->mWeights =====> vertexWeightData
+ for (unsigned int idx_weights = 0; idx_weights < aib->mNumWeights; ++idx_weights) {
+ unsigned int vertexId = aib->mWeights[idx_weights].mVertexId;
+ float vertWeight = aib->mWeights[idx_weights].mWeight;
+
+ // A vertex can only have at most four joint weights. Ignore all others.
+ if (jointsPerVertex[vertexId] > 3) {
+ continue;
+ }
+
+ vertexJointData[vertexId][jointsPerVertex[vertexId]] = static_cast<float>(jointNamesIndex);
+ vertexWeightData[vertexId][jointsPerVertex[vertexId]] = vertWeight;
+
+ jointsPerVertex[vertexId] += 1;
+ }
+
+ } // End: for-loop mNumMeshes
+
+ Mesh::Primitive& p = meshRef->primitives.back();
+ Ref<Accessor> vertexJointAccessor = ExportData(mAsset, skinRef->id, bufferRef, aimesh->mNumVertices, vertexJointData, AttribType::VEC4, AttribType::VEC4, ComponentType_FLOAT);
+ if ( vertexJointAccessor ) {
+ p.attributes.joint.push_back( vertexJointAccessor );
+ }
+
+ Ref<Accessor> vertexWeightAccessor = ExportData(mAsset, skinRef->id, bufferRef, aimesh->mNumVertices, vertexWeightData, AttribType::VEC4, AttribType::VEC4, ComponentType_FLOAT);
+ if ( vertexWeightAccessor ) {
+ p.attributes.weight.push_back( vertexWeightAccessor );
+ }
+ delete[] jointsPerVertex;
+ delete[] vertexWeightData;
+ delete[] vertexJointData;
+}
+
+#if defined(__has_warning)
+#if __has_warning("-Wunused-but-set-variable")
+#pragma GCC diagnostic push
+#pragma GCC diagnostic ignored "-Wunused-but-set-variable"
+#endif
+#endif
+
+void glTFExporter::ExportMeshes()
+{
+ // Not for
+ // using IndicesType = decltype(aiFace::mNumIndices);
+ // But yes for
+ // using IndicesType = unsigned short;
+ // because "ComponentType_UNSIGNED_SHORT" used for indices. And it's a maximal type according to glTF specification.
+ typedef unsigned short IndicesType;
+
+ // Variables needed for compression. BEGIN.
+ // Indices, not pointers - because pointer to buffer is changing while writing to it.
+#ifdef ASSIMP_IMPORTER_GLTF_USE_OPEN3DGC
+ size_t idx_srcdata_begin = 0; // Index of buffer before writing mesh data. Also, index of begin of coordinates array in buffer.
+ size_t idx_srcdata_normal = SIZE_MAX;// Index of begin of normals array in buffer. SIZE_MAX - mean that mesh has no normals.
+ size_t idx_srcdata_ind;// Index of begin of coordinates indices array in buffer.
+#endif
+ std::vector<size_t> idx_srcdata_tc;// Array of indices. Every index point to begin of texture coordinates array in buffer.
+ bool comp_allow;// Point that data of current mesh can be compressed.
+ // Variables needed for compression. END.
+
+ std::string fname = std::string(mFilename);
+ std::string bufferIdPrefix = fname.substr(0, fname.rfind(".gltf"));
+ std::string bufferId = mAsset->FindUniqueID("", bufferIdPrefix.c_str());
+
+ Ref<Buffer> b = mAsset->GetBodyBuffer();
+ if (!b) {
+ b = mAsset->buffers.Create(bufferId);
+ }
+
+ //----------------------------------------
+ // Initialize variables for the skin
+ bool createSkin = false;
+ for (unsigned int idx_mesh = 0; idx_mesh < mScene->mNumMeshes; ++idx_mesh) {
+ const aiMesh* aim = mScene->mMeshes[idx_mesh];
+ if(aim->HasBones()) {
+ createSkin = true;
+ break;
+ }
+ }
+
+ Ref<Skin> skinRef;
+ std::string skinName = mAsset->FindUniqueID("skin", "skin");
+ std::vector<aiMatrix4x4> inverseBindMatricesData;
+ if(createSkin) {
+ skinRef = mAsset->skins.Create(skinName);
+ skinRef->name = skinName;
+ }
+ //----------------------------------------
+
+ for (unsigned int idx_mesh = 0; idx_mesh < mScene->mNumMeshes; ++idx_mesh) {
+ const aiMesh* aim = mScene->mMeshes[idx_mesh];
+
+ // Check if compressing requested and mesh can be encoded.
+#ifdef ASSIMP_IMPORTER_GLTF_USE_OPEN3DGC
+ comp_allow = mProperties->GetPropertyBool("extensions.Open3DGC.use", false);
+#else
+ comp_allow = false;
+#endif
+
+ if(comp_allow && (aim->mPrimitiveTypes == aiPrimitiveType_TRIANGLE) && (aim->mNumVertices > 0) && (aim->mNumFaces > 0))
+ {
+ idx_srcdata_tc.clear();
+ idx_srcdata_tc.reserve(AI_MAX_NUMBER_OF_TEXTURECOORDS);
+ }
+ else
+ {
+ std::string msg;
+
+ if(aim->mPrimitiveTypes != aiPrimitiveType_TRIANGLE)
+ msg = "all primitives of the mesh must be a triangles.";
+ else
+ msg = "mesh must has vertices and faces.";
+
+ ASSIMP_LOG_WARN("GLTF: can not use Open3DGC-compression: ", msg);
+ comp_allow = false;
+ }
+
+ std::string meshId = mAsset->FindUniqueID(aim->mName.C_Str(), "mesh");
+ Ref<Mesh> m = mAsset->meshes.Create(meshId);
+ m->primitives.resize(1);
+ Mesh::Primitive& p = m->primitives.back();
+
+ p.material = mAsset->materials.Get(aim->mMaterialIndex);
+
+ /******************* Vertices ********************/
+ // If compression is used then you need parameters of uncompressed region: begin and size. At this step "begin" is stored.
+#ifdef ASSIMP_IMPORTER_GLTF_USE_OPEN3DGC
+ if(comp_allow) idx_srcdata_begin = b->byteLength;
+#endif
+
+ Ref<Accessor> v = ExportData(*mAsset, meshId, b, aim->mNumVertices, aim->mVertices, AttribType::VEC3, AttribType::VEC3, ComponentType_FLOAT, BufferViewTarget_ARRAY_BUFFER);
+ if (v) p.attributes.position.push_back(v);
+
+ /******************** Normals ********************/
+#ifdef ASSIMP_IMPORTER_GLTF_USE_OPEN3DGC
+ if(comp_allow && (aim->mNormals != 0)) idx_srcdata_normal = b->byteLength;// Store index of normals array.
+#endif
+
+ Ref<Accessor> n = ExportData(*mAsset, meshId, b, aim->mNumVertices, aim->mNormals, AttribType::VEC3, AttribType::VEC3, ComponentType_FLOAT, BufferViewTarget_ARRAY_BUFFER);
+ if (n) p.attributes.normal.push_back(n);
+
+ /************** Texture coordinates **************/
+ for (int i = 0; i < AI_MAX_NUMBER_OF_TEXTURECOORDS; ++i) {
+ // Flip UV y coords
+ if (aim -> mNumUVComponents[i] > 1) {
+ for (unsigned int j = 0; j < aim->mNumVertices; ++j) {
+ aim->mTextureCoords[i][j].y = 1 - aim->mTextureCoords[i][j].y;
+ }
+ }
+
+ if (aim->mNumUVComponents[i] > 0) {
+ AttribType::Value type = (aim->mNumUVComponents[i] == 2) ? AttribType::VEC2 : AttribType::VEC3;
+
+ if(comp_allow) idx_srcdata_tc.push_back(b->byteLength);// Store index of texture coordinates array.
+
+ Ref<Accessor> tc = ExportData(*mAsset, meshId, b, aim->mNumVertices, aim->mTextureCoords[i], AttribType::VEC3, type, ComponentType_FLOAT, BufferViewTarget_ARRAY_BUFFER);
+ if (tc) p.attributes.texcoord.push_back(tc);
+ }
+ }
+
+ /*************** Vertices indices ****************/
+#ifdef ASSIMP_IMPORTER_GLTF_USE_OPEN3DGC
+ idx_srcdata_ind = b->byteLength;// Store index of indices array.
+#endif
+
+ if (aim->mNumFaces > 0) {
+ std::vector<IndicesType> indices;
+ unsigned int nIndicesPerFace = aim->mFaces[0].mNumIndices;
+ indices.resize(aim->mNumFaces * nIndicesPerFace);
+ for (size_t i = 0; i < aim->mNumFaces; ++i) {
+ for (size_t j = 0; j < nIndicesPerFace; ++j) {
+ indices[i*nIndicesPerFace + j] = uint16_t(aim->mFaces[i].mIndices[j]);
+ }
+ }
+
+ p.indices = ExportData(*mAsset, meshId, b, unsigned(indices.size()), &indices[0], AttribType::SCALAR, AttribType::SCALAR, ComponentType_UNSIGNED_SHORT, BufferViewTarget_ELEMENT_ARRAY_BUFFER);
+ }
+
+ switch (aim->mPrimitiveTypes) {
+ case aiPrimitiveType_POLYGON:
+ p.mode = PrimitiveMode_TRIANGLES; break; // TODO implement this
+ case aiPrimitiveType_LINE:
+ p.mode = PrimitiveMode_LINES; break;
+ case aiPrimitiveType_POINT:
+ p.mode = PrimitiveMode_POINTS; break;
+ default: // aiPrimitiveType_TRIANGLE
+ p.mode = PrimitiveMode_TRIANGLES;
+ }
+
+ /*************** Skins ****************/
+ if(aim->HasBones()) {
+ ExportSkin(*mAsset, aim, m, b, skinRef, inverseBindMatricesData);
+ }
+
+ /****************** Compression ******************/
+ ///TODO: animation: weights, joints.
+ if(comp_allow)
+ {
+#ifdef ASSIMP_IMPORTER_GLTF_USE_OPEN3DGC
+ // Only one type of compression supported at now - Open3DGC.
+ //
+ o3dgc::BinaryStream bs;
+ o3dgc::SC3DMCEncoder<IndicesType> encoder;
+ o3dgc::IndexedFaceSet<IndicesType> comp_o3dgc_ifs;
+ o3dgc::SC3DMCEncodeParams comp_o3dgc_params;
+
+ //
+ // Fill data for encoder.
+ //
+ // Quantization
+ unsigned quant_coord = mProperties->GetPropertyInteger("extensions.Open3DGC.quantization.POSITION", 12);
+ unsigned quant_normal = mProperties->GetPropertyInteger("extensions.Open3DGC.quantization.NORMAL", 10);
+ unsigned quant_texcoord = mProperties->GetPropertyInteger("extensions.Open3DGC.quantization.TEXCOORD", 10);
+
+ // Prediction
+ o3dgc::O3DGCSC3DMCPredictionMode prediction_position = o3dgc::O3DGC_SC3DMC_PARALLELOGRAM_PREDICTION;
+ o3dgc::O3DGCSC3DMCPredictionMode prediction_normal = o3dgc::O3DGC_SC3DMC_SURF_NORMALS_PREDICTION;
+ o3dgc::O3DGCSC3DMCPredictionMode prediction_texcoord = o3dgc::O3DGC_SC3DMC_PARALLELOGRAM_PREDICTION;
+
+ // IndexedFacesSet: "Crease angle", "solid", "convex" are set to default.
+ comp_o3dgc_ifs.SetCCW(true);
+ comp_o3dgc_ifs.SetIsTriangularMesh(true);
+ comp_o3dgc_ifs.SetNumFloatAttributes(0);
+ // Coordinates
+ comp_o3dgc_params.SetCoordQuantBits(quant_coord);
+ comp_o3dgc_params.SetCoordPredMode(prediction_position);
+ comp_o3dgc_ifs.SetNCoord(aim->mNumVertices);
+ comp_o3dgc_ifs.SetCoord((o3dgc::Real* const)&b->GetPointer()[idx_srcdata_begin]);
+ // Normals
+ if(idx_srcdata_normal != SIZE_MAX)
+ {
+ comp_o3dgc_params.SetNormalQuantBits(quant_normal);
+ comp_o3dgc_params.SetNormalPredMode(prediction_normal);
+ comp_o3dgc_ifs.SetNNormal(aim->mNumVertices);
+ comp_o3dgc_ifs.SetNormal((o3dgc::Real* const)&b->GetPointer()[idx_srcdata_normal]);
+ }
+
+ // Texture coordinates
+ for(size_t num_tc = 0; num_tc < idx_srcdata_tc.size(); num_tc++)
+ {
+ size_t num = comp_o3dgc_ifs.GetNumFloatAttributes();
+
+ comp_o3dgc_params.SetFloatAttributeQuantBits(static_cast<unsigned long>(num), quant_texcoord);
+ comp_o3dgc_params.SetFloatAttributePredMode(static_cast<unsigned long>(num), prediction_texcoord);
+ comp_o3dgc_ifs.SetNFloatAttribute(static_cast<unsigned long>(num), aim->mNumVertices);// number of elements.
+ comp_o3dgc_ifs.SetFloatAttributeDim(static_cast<unsigned long>(num), aim->mNumUVComponents[num_tc]);// components per element: aiVector3D => x * float
+ comp_o3dgc_ifs.SetFloatAttributeType(static_cast<unsigned long>(num), o3dgc::O3DGC_IFS_FLOAT_ATTRIBUTE_TYPE_TEXCOORD);
+ comp_o3dgc_ifs.SetFloatAttribute(static_cast<unsigned long>(num), (o3dgc::Real* const)&b->GetPointer()[idx_srcdata_tc[num_tc]]);
+ comp_o3dgc_ifs.SetNumFloatAttributes(static_cast<unsigned long>(num + 1));
+ }
+
+ // Coordinates indices
+ comp_o3dgc_ifs.SetNCoordIndex(aim->mNumFaces);
+ comp_o3dgc_ifs.SetCoordIndex((IndicesType* const)&b->GetPointer()[idx_srcdata_ind]);
+ // Prepare to encoding
+ comp_o3dgc_params.SetNumFloatAttributes(comp_o3dgc_ifs.GetNumFloatAttributes());
+ if(mProperties->GetPropertyBool("extensions.Open3DGC.binary", true))
+ comp_o3dgc_params.SetStreamType(o3dgc::O3DGC_STREAM_TYPE_BINARY);
+ else
+ comp_o3dgc_params.SetStreamType(o3dgc::O3DGC_STREAM_TYPE_ASCII);
+
+ comp_o3dgc_ifs.ComputeMinMax(o3dgc::O3DGC_SC3DMC_MAX_ALL_DIMS);
+ //
+ // Encoding
+ //
+ encoder.Encode(comp_o3dgc_params, comp_o3dgc_ifs, bs);
+ // Replace data in buffer.
+ b->ReplaceData(idx_srcdata_begin, b->byteLength - idx_srcdata_begin, bs.GetBuffer(), bs.GetSize());
+ //
+ // Add information about extension to mesh.
+ //
+ // Create extension structure.
+ Mesh::SCompression_Open3DGC* ext = new Mesh::SCompression_Open3DGC;
+
+ // Fill it.
+ ext->Buffer = b->id;
+ ext->Offset = idx_srcdata_begin;
+ ext->Count = b->byteLength - idx_srcdata_begin;
+ ext->Binary = mProperties->GetPropertyBool("extensions.Open3DGC.binary");
+ ext->IndicesCount = comp_o3dgc_ifs.GetNCoordIndex() * 3;
+ ext->VerticesCount = comp_o3dgc_ifs.GetNCoord();
+ // And assign to mesh.
+ m->Extension.push_back(ext);
+#endif
+ }// if(comp_allow)
+ }// for (unsigned int i = 0; i < mScene->mNumMeshes; ++i)
+
+ //----------------------------------------
+ // Finish the skin
+ // Create the Accessor for skinRef->inverseBindMatrices
+ if (createSkin) {
+ mat4* invBindMatrixData = new mat4[inverseBindMatricesData.size()];
+ for ( unsigned int idx_joint = 0; idx_joint < inverseBindMatricesData.size(); ++idx_joint) {
+ CopyValue(inverseBindMatricesData[idx_joint], invBindMatrixData[idx_joint]);
+ }
+
+ Ref<Accessor> invBindMatrixAccessor = ExportData(*mAsset, skinName, b, static_cast<unsigned int>(inverseBindMatricesData.size()), invBindMatrixData, AttribType::MAT4, AttribType::MAT4, ComponentType_FLOAT);
+ if (invBindMatrixAccessor) skinRef->inverseBindMatrices = invBindMatrixAccessor;
+
+ // Identity Matrix =====> skinRef->bindShapeMatrix
+ // Temporary. Hard-coded identity matrix here
+ skinRef->bindShapeMatrix.isPresent = true;
+ IdentityMatrix4(skinRef->bindShapeMatrix.value);
+
+ // Find node that contains this mesh and add "skeletons" and "skin" attributes to that node.
+ Ref<Node> rootNode = mAsset->nodes.Get(unsigned(0));
+ Ref<Node> meshNode;
+ std::string meshID = mAsset->meshes.Get(unsigned(0))->id;
+ FindMeshNode(rootNode, meshNode, meshID);
+
+ Ref<Node> rootJoint = FindSkeletonRootJoint(skinRef);
+ meshNode->skeletons.push_back(rootJoint);
+ meshNode->skin = skinRef;
+ }
+}
+
+#if defined(__has_warning)
+#if __has_warning("-Wunused-but-set-variable")
+#pragma GCC diagnostic pop
+#endif
+#endif
+
+/*
+ * Export the root node of the node hierarchy.
+ * Calls ExportNode for all children.
+ */
+unsigned int glTFExporter::ExportNodeHierarchy(const aiNode* n)
+{
+ Ref<Node> node = mAsset->nodes.Create(mAsset->FindUniqueID(n->mName.C_Str(), "node"));
+
+ if (!n->mTransformation.IsIdentity()) {
+ node->matrix.isPresent = true;
+ CopyValue(n->mTransformation, node->matrix.value);
+ }
+
+ for (unsigned int i = 0; i < n->mNumMeshes; ++i) {
+ node->meshes.push_back(mAsset->meshes.Get(n->mMeshes[i]));
+ }
+
+ for (unsigned int i = 0; i < n->mNumChildren; ++i) {
+ unsigned int idx = ExportNode(n->mChildren[i], node);
+ node->children.push_back(mAsset->nodes.Get(idx));
+ }
+
+ return node.GetIndex();
+}
+
+/*
+ * Export node and recursively calls ExportNode for all children.
+ * Since these nodes are not the root node, we also export the parent Ref<Node>
+ */
+unsigned int glTFExporter::ExportNode(const aiNode* n, Ref<Node>& parent)
+{
+ Ref<Node> node = mAsset->nodes.Create(mAsset->FindUniqueID(n->mName.C_Str(), "node"));
+
+ node->parent = parent;
+
+ if (!n->mTransformation.IsIdentity()) {
+ node->matrix.isPresent = true;
+ CopyValue(n->mTransformation, node->matrix.value);
+ }
+
+ for (unsigned int i = 0; i < n->mNumMeshes; ++i) {
+ node->meshes.push_back(mAsset->meshes.Get(n->mMeshes[i]));
+ }
+
+ for (unsigned int i = 0; i < n->mNumChildren; ++i) {
+ unsigned int idx = ExportNode(n->mChildren[i], node);
+ node->children.push_back(mAsset->nodes.Get(idx));
+ }
+
+ return node.GetIndex();
+}
+
+
+void glTFExporter::ExportScene()
+{
+ const char* sceneName = "defaultScene";
+ Ref<Scene> scene = mAsset->scenes.Create(sceneName);
+
+ // root node will be the first one exported (idx 0)
+ if (mAsset->nodes.Size() > 0) {
+ scene->nodes.push_back(mAsset->nodes.Get(0u));
+ }
+
+ // set as the default scene
+ mAsset->scene = scene;
+}
+
+void glTFExporter::ExportMetadata()
+{
+ glTF::AssetMetadata& asset = mAsset->asset;
+ asset.version = "1.0";
+
+ char buffer[256];
+ ai_snprintf(buffer, 256, "Open Asset Import Library (assimp v%d.%d.%x)",
+ aiGetVersionMajor(), aiGetVersionMinor(), aiGetVersionRevision());
+
+ asset.generator = buffer;
+
+ // Copyright
+ aiString copyright_str;
+ if (mScene->mMetaData != nullptr && mScene->mMetaData->Get(AI_METADATA_SOURCE_COPYRIGHT, copyright_str)) {
+ asset.copyright = copyright_str.C_Str();
+ }
+}
+
+inline void ExtractAnimationData(Asset& mAsset, std::string& animId, Ref<Animation>& animRef, Ref<Buffer>& buffer, const aiNodeAnim* nodeChannel, float ticksPerSecond)
+{
+ // Loop over the data and check to see if it exactly matches an existing buffer.
+ // If yes, then reference the existing corresponding accessor.
+ // Otherwise, add to the buffer and create a new accessor.
+
+ size_t counts[3] = {
+ nodeChannel->mNumPositionKeys,
+ nodeChannel->mNumScalingKeys,
+ nodeChannel->mNumRotationKeys,
+ };
+ size_t numKeyframes = 1;
+ for (int i = 0; i < 3; ++i) {
+ if (counts[i] > numKeyframes) {
+ numKeyframes = counts[i];
+ }
+ }
+
+ //-------------------------------------------------------
+ // Extract TIME parameter data.
+ // Check if the timeStamps are the same for mPositionKeys, mRotationKeys, and mScalingKeys.
+ if(nodeChannel->mNumPositionKeys > 0) {
+ typedef float TimeType;
+ std::vector<TimeType> timeData;
+ timeData.resize(numKeyframes);
+ for (size_t i = 0; i < numKeyframes; ++i) {
+ size_t frameIndex = i * nodeChannel->mNumPositionKeys / numKeyframes;
+ // mTime is measured in ticks, but GLTF time is measured in seconds, so convert.
+ // Check if we have to cast type here. e.g. uint16_t()
+ timeData[i] = static_cast<float>(nodeChannel->mPositionKeys[frameIndex].mTime / ticksPerSecond);
+ }
+
+ Ref<Accessor> timeAccessor = ExportData(mAsset, animId, buffer, static_cast<unsigned int>(numKeyframes), &timeData[0], AttribType::SCALAR, AttribType::SCALAR, ComponentType_FLOAT);
+ if (timeAccessor) animRef->Parameters.TIME = timeAccessor;
+ }
+
+ //-------------------------------------------------------
+ // Extract translation parameter data
+ if(nodeChannel->mNumPositionKeys > 0) {
+ C_STRUCT aiVector3D* translationData = new aiVector3D[numKeyframes];
+ for (size_t i = 0; i < numKeyframes; ++i) {
+ size_t frameIndex = i * nodeChannel->mNumPositionKeys / numKeyframes;
+ translationData[i] = nodeChannel->mPositionKeys[frameIndex].mValue;
+ }
+
+ Ref<Accessor> tranAccessor = ExportData(mAsset, animId, buffer, static_cast<unsigned int>(numKeyframes), translationData, AttribType::VEC3, AttribType::VEC3, ComponentType_FLOAT);
+ if ( tranAccessor ) {
+ animRef->Parameters.translation = tranAccessor;
+ }
+ delete[] translationData;
+ }
+
+ //-------------------------------------------------------
+ // Extract scale parameter data
+ if(nodeChannel->mNumScalingKeys > 0) {
+ C_STRUCT aiVector3D* scaleData = new aiVector3D[numKeyframes];
+ for (size_t i = 0; i < numKeyframes; ++i) {
+ size_t frameIndex = i * nodeChannel->mNumScalingKeys / numKeyframes;
+ scaleData[i] = nodeChannel->mScalingKeys[frameIndex].mValue;
+ }
+
+ Ref<Accessor> scaleAccessor = ExportData(mAsset, animId, buffer, static_cast<unsigned int>(numKeyframes), scaleData, AttribType::VEC3, AttribType::VEC3, ComponentType_FLOAT);
+ if ( scaleAccessor ) {
+ animRef->Parameters.scale = scaleAccessor;
+ }
+ delete[] scaleData;
+ }
+
+ //-------------------------------------------------------
+ // Extract rotation parameter data
+ if(nodeChannel->mNumRotationKeys > 0) {
+ vec4* rotationData = new vec4[numKeyframes];
+ for (size_t i = 0; i < numKeyframes; ++i) {
+ size_t frameIndex = i * nodeChannel->mNumRotationKeys / numKeyframes;
+ rotationData[i][0] = nodeChannel->mRotationKeys[frameIndex].mValue.x;
+ rotationData[i][1] = nodeChannel->mRotationKeys[frameIndex].mValue.y;
+ rotationData[i][2] = nodeChannel->mRotationKeys[frameIndex].mValue.z;
+ rotationData[i][3] = nodeChannel->mRotationKeys[frameIndex].mValue.w;
+ }
+
+ Ref<Accessor> rotAccessor = ExportData(mAsset, animId, buffer, static_cast<unsigned int>(numKeyframes), rotationData, AttribType::VEC4, AttribType::VEC4, ComponentType_FLOAT);
+ if ( rotAccessor ) {
+ animRef->Parameters.rotation = rotAccessor;
+ }
+ delete[] rotationData;
+ }
+}
+
+void glTFExporter::ExportAnimations()
+{
+ Ref<Buffer> bufferRef = mAsset->buffers.Get(unsigned (0));
+
+ for (unsigned int i = 0; i < mScene->mNumAnimations; ++i) {
+ const aiAnimation* anim = mScene->mAnimations[i];
+
+ std::string nameAnim = "anim";
+ if (anim->mName.length > 0) {
+ nameAnim = anim->mName.C_Str();
+ }
+
+ for (unsigned int channelIndex = 0; channelIndex < anim->mNumChannels; ++channelIndex) {
+ const aiNodeAnim* nodeChannel = anim->mChannels[channelIndex];
+
+ // It appears that assimp stores this type of animation as multiple animations.
+ // where each aiNodeAnim in mChannels animates a specific node.
+ std::string name = nameAnim + "_" + ai_to_string(channelIndex);
+ name = mAsset->FindUniqueID(name, "animation");
+ Ref<Animation> animRef = mAsset->animations.Create(name);
+
+ /******************* Parameters ********************/
+ ExtractAnimationData(*mAsset, name, animRef, bufferRef, nodeChannel, static_cast<float>(anim->mTicksPerSecond));
+
+ for (unsigned int j = 0; j < 3; ++j) {
+ std::string channelType;
+ int channelSize=0;
+ switch (j) {
+ case 0:
+ channelType = "rotation";
+ channelSize = nodeChannel->mNumRotationKeys;
+ break;
+ case 1:
+ channelType = "scale";
+ channelSize = nodeChannel->mNumScalingKeys;
+ break;
+ case 2:
+ channelType = "translation";
+ channelSize = nodeChannel->mNumPositionKeys;
+ break;
+ }
+
+ if (channelSize < 1) { continue; }
+
+ Animation::AnimChannel tmpAnimChannel;
+ Animation::AnimSampler tmpAnimSampler;
+
+ tmpAnimChannel.sampler = name + "_" + channelType;
+ tmpAnimChannel.target.path = channelType;
+ tmpAnimSampler.output = channelType;
+ tmpAnimSampler.id = name + "_" + channelType;
+
+ tmpAnimChannel.target.id = mAsset->nodes.Get(nodeChannel->mNodeName.C_Str());
+
+ tmpAnimSampler.input = "TIME";
+ tmpAnimSampler.interpolation = "LINEAR";
+
+ animRef->Channels.push_back(tmpAnimChannel);
+ animRef->Samplers.push_back(tmpAnimSampler);
+ }
+
+ }
+
+ // Assimp documentation staes this is not used (not implemented)
+ // for (unsigned int channelIndex = 0; channelIndex < anim->mNumMeshChannels; ++channelIndex) {
+ // const aiMeshAnim* meshChannel = anim->mMeshChannels[channelIndex];
+ // }
+
+ } // End: for-loop mNumAnimations
+}
+
+
+#endif // ASSIMP_BUILD_NO_GLTF_EXPORTER
+#endif // ASSIMP_BUILD_NO_EXPORT
diff --git a/libs/assimp/code/AssetLib/glTF/glTFExporter.h b/libs/assimp/code/AssetLib/glTF/glTFExporter.h
new file mode 100644
index 0000000..a526954
--- /dev/null
+++ b/libs/assimp/code/AssetLib/glTF/glTFExporter.h
@@ -0,0 +1,118 @@
+/*
+Open Asset Import Library (assimp)
+----------------------------------------------------------------------
+
+Copyright (c) 2006-2022, assimp team
+
+All rights reserved.
+
+Redistribution and use of this software in source and binary forms,
+with or without modification, are permitted provided that the
+following conditions are met:
+
+* Redistributions of source code must retain the above
+copyright notice, this list of conditions and the
+following disclaimer.
+
+* Redistributions in binary form must reproduce the above
+copyright notice, this list of conditions and the
+following disclaimer in the documentation and/or other
+materials provided with the distribution.
+
+* Neither the name of the assimp team, nor the names of its
+contributors may be used to endorse or promote products
+derived from this software without specific prior
+written permission of the assimp team.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+----------------------------------------------------------------------
+*/
+
+/** @file GltfExporter.h
+ * Declares the exporter class to write a scene to a gltf/glb file
+ */
+#pragma once
+#ifndef AI_GLTFEXPORTER_H_INC
+#define AI_GLTFEXPORTER_H_INC
+
+#if !defined(ASSIMP_BUILD_NO_GLTF_EXPORTER) && !defined(ASSIMP_BUILD_NO_GLTF1_EXPORTER)
+
+#include <assimp/material.h>
+#include <assimp/types.h>
+
+#include <map>
+#include <memory>
+#include <sstream>
+#include <vector>
+
+struct aiScene;
+struct aiNode;
+
+namespace glTFCommon {
+template <class T>
+class Ref;
+
+}
+
+namespace glTF {
+class Asset;
+struct TexProperty;
+struct Node;
+
+} // namespace glTF
+
+namespace Assimp {
+class IOSystem;
+class IOStream;
+class ExportProperties;
+
+// ------------------------------------------------------------------------------------------------
+/** Helper class to export a given scene to an glTF file. */
+// ------------------------------------------------------------------------------------------------
+class glTFExporter {
+public:
+ /// Constructor for a specific scene to export
+ glTFExporter(const char *filename, IOSystem *pIOSystem, const aiScene *pScene,
+ const ExportProperties *pProperties, bool binary);
+
+private:
+ const char *mFilename;
+ IOSystem *mIOSystem;
+ std::shared_ptr<const aiScene> mScene;
+ const ExportProperties *mProperties;
+
+ std::map<std::string, unsigned int> mTexturesByPath;
+
+ std::shared_ptr<glTF::Asset> mAsset;
+
+ std::vector<unsigned char> mBodyData;
+
+ void WriteBinaryData(IOStream *outfile, std::size_t sceneLength);
+
+ void GetTexSampler(const aiMaterial *mat, glTF::TexProperty &prop);
+ void GetMatColorOrTex(const aiMaterial *mat, glTF::TexProperty &prop, const char *propName, int type, int idx, aiTextureType tt);
+ void ExportMetadata();
+ void ExportMaterials();
+ void ExportMeshes();
+ unsigned int ExportNodeHierarchy(const aiNode *n);
+ unsigned int ExportNode(const aiNode *node, glTFCommon::Ref<glTF::Node> & parent);
+ void ExportScene();
+ void ExportAnimations();
+};
+
+} // namespace Assimp
+
+#endif // ASSIMP_BUILD_NO_GLTF_EXPORTER
+
+#endif // AI_GLTFEXPORTER_H_INC
diff --git a/libs/assimp/code/AssetLib/glTF/glTFImporter.cpp b/libs/assimp/code/AssetLib/glTF/glTFImporter.cpp
new file mode 100644
index 0000000..81db12e
--- /dev/null
+++ b/libs/assimp/code/AssetLib/glTF/glTFImporter.cpp
@@ -0,0 +1,725 @@
+/*
+Open Asset Import Library (assimp)
+----------------------------------------------------------------------
+
+Copyright (c) 2006-2022, assimp team
+
+All rights reserved.
+
+Redistribution and use of this software in source and binary forms,
+with or without modification, are permitted provided that the
+following conditions are met:
+
+* Redistributions of source code must retain the above
+copyright notice, this list of conditions and the
+following disclaimer.
+
+* Redistributions in binary form must reproduce the above
+copyright notice, this list of conditions and the
+following disclaimer in the documentation and/or other
+materials provided with the distribution.
+
+* Neither the name of the assimp team, nor the names of its
+contributors may be used to endorse or promote products
+derived from this software without specific prior
+written permission of the assimp team.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+----------------------------------------------------------------------
+*/
+
+#if !defined(ASSIMP_BUILD_NO_GLTF_IMPORTER) && !defined(ASSIMP_BUILD_NO_GLTF1_IMPORTER)
+
+#include "AssetLib/glTF/glTFImporter.h"
+#include "AssetLib/glTF/glTFAsset.h"
+#if !defined(ASSIMP_BUILD_NO_EXPORT)
+#include "AssetLib/glTF/glTFAssetWriter.h"
+#endif
+#include "PostProcessing/MakeVerboseFormat.h"
+
+#include <assimp/StringComparison.h>
+#include <assimp/StringUtils.h>
+#include <assimp/ai_assert.h>
+#include <assimp/commonMetaData.h>
+#include <assimp/importerdesc.h>
+#include <assimp/scene.h>
+#include <assimp/DefaultLogger.hpp>
+#include <assimp/Importer.hpp>
+
+#include <memory>
+
+using namespace Assimp;
+using namespace glTF;
+
+//
+// glTFImporter
+//
+
+static const aiImporterDesc desc = {
+ "glTF Importer",
+ "",
+ "",
+ "",
+ aiImporterFlags_SupportTextFlavour | aiImporterFlags_SupportBinaryFlavour | aiImporterFlags_SupportCompressedFlavour | aiImporterFlags_LimitedSupport | aiImporterFlags_Experimental,
+ 0,
+ 0,
+ 0,
+ 0,
+ "gltf glb"
+};
+
+glTFImporter::glTFImporter() :
+ BaseImporter(), meshOffsets(), embeddedTexIdxs(), mScene(nullptr) {
+ // empty
+}
+
+glTFImporter::~glTFImporter() {
+ // empty
+}
+
+const aiImporterDesc *glTFImporter::GetInfo() const {
+ return &desc;
+}
+
+bool glTFImporter::CanRead(const std::string &pFile, IOSystem *pIOHandler, bool /* checkSig */) const {
+ glTF::Asset asset(pIOHandler);
+ try {
+ asset.Load(pFile, GetExtension(pFile) == "glb");
+ std::string version = asset.asset.version;
+ return !version.empty() && version[0] == '1';
+ } catch (...) {
+ return false;
+ }
+}
+
+inline void SetMaterialColorProperty(std::vector<int> &embeddedTexIdxs, Asset & /*r*/, glTF::TexProperty prop, aiMaterial *mat,
+ aiTextureType texType, const char *pKey, unsigned int type, unsigned int idx) {
+ if (prop.texture) {
+ if (prop.texture->source) {
+ aiString uri(prop.texture->source->uri);
+
+ int texIdx = embeddedTexIdxs[prop.texture->source.GetIndex()];
+ if (texIdx != -1) { // embedded
+ // setup texture reference string (copied from ColladaLoader::FindFilenameForEffectTexture)
+ uri.data[0] = '*';
+ uri.length = 1 + ASSIMP_itoa10(uri.data + 1, MAXLEN - 1, texIdx);
+ }
+
+ mat->AddProperty(&uri, _AI_MATKEY_TEXTURE_BASE, texType, 0);
+ }
+ } else {
+ aiColor4D col;
+ CopyValue(prop.color, col);
+ mat->AddProperty(&col, 1, pKey, type, idx);
+ }
+}
+
+void glTFImporter::ImportMaterials(glTF::Asset &r) {
+ mScene->mNumMaterials = unsigned(r.materials.Size());
+ mScene->mMaterials = new aiMaterial *[mScene->mNumMaterials];
+
+ for (unsigned int i = 0; i < mScene->mNumMaterials; ++i) {
+ aiMaterial *aimat = mScene->mMaterials[i] = new aiMaterial();
+
+ Material &mat = r.materials[i];
+
+ /*if (!mat.name.empty())*/ {
+ aiString str(mat.id /*mat.name*/);
+ aimat->AddProperty(&str, AI_MATKEY_NAME);
+ }
+
+ SetMaterialColorProperty(embeddedTexIdxs, r, mat.ambient, aimat, aiTextureType_AMBIENT, AI_MATKEY_COLOR_AMBIENT);
+ SetMaterialColorProperty(embeddedTexIdxs, r, mat.diffuse, aimat, aiTextureType_DIFFUSE, AI_MATKEY_COLOR_DIFFUSE);
+ SetMaterialColorProperty(embeddedTexIdxs, r, mat.specular, aimat, aiTextureType_SPECULAR, AI_MATKEY_COLOR_SPECULAR);
+ SetMaterialColorProperty(embeddedTexIdxs, r, mat.emission, aimat, aiTextureType_EMISSIVE, AI_MATKEY_COLOR_EMISSIVE);
+
+ aimat->AddProperty(&mat.doubleSided, 1, AI_MATKEY_TWOSIDED);
+
+ if (mat.transparent && (mat.transparency != 1.0f)) {
+ aimat->AddProperty(&mat.transparency, 1, AI_MATKEY_OPACITY);
+ }
+
+ if (mat.shininess > 0.f) {
+ aimat->AddProperty(&mat.shininess, 1, AI_MATKEY_SHININESS);
+ }
+ }
+
+ if (mScene->mNumMaterials == 0) {
+ mScene->mNumMaterials = 1;
+ // Delete the array of length zero created above.
+ delete[] mScene->mMaterials;
+ mScene->mMaterials = new aiMaterial *[1];
+ mScene->mMaterials[0] = new aiMaterial();
+ }
+}
+
+static inline void SetFace(aiFace &face, int a) {
+ face.mNumIndices = 1;
+ face.mIndices = new unsigned int[1];
+ face.mIndices[0] = a;
+}
+
+static inline void SetFace(aiFace &face, int a, int b) {
+ face.mNumIndices = 2;
+ face.mIndices = new unsigned int[2];
+ face.mIndices[0] = a;
+ face.mIndices[1] = b;
+}
+
+static inline void SetFace(aiFace &face, int a, int b, int c) {
+ face.mNumIndices = 3;
+ face.mIndices = new unsigned int[3];
+ face.mIndices[0] = a;
+ face.mIndices[1] = b;
+ face.mIndices[2] = c;
+}
+
+static inline bool CheckValidFacesIndices(aiFace *faces, unsigned nFaces, unsigned nVerts) {
+ for (unsigned i = 0; i < nFaces; ++i) {
+ for (unsigned j = 0; j < faces[i].mNumIndices; ++j) {
+ unsigned idx = faces[i].mIndices[j];
+ if (idx >= nVerts)
+ return false;
+ }
+ }
+ return true;
+}
+
+void glTFImporter::ImportMeshes(glTF::Asset &r) {
+ std::vector<aiMesh *> meshes;
+
+ unsigned int k = 0;
+ meshOffsets.clear();
+
+ for (unsigned int m = 0; m < r.meshes.Size(); ++m) {
+ Mesh &mesh = r.meshes[m];
+
+ // Check if mesh extensions is used
+ if (mesh.Extension.size() > 0) {
+#ifdef ASSIMP_IMPORTER_GLTF_USE_OPEN3DGC
+ for (Mesh::SExtension *cur_ext : mesh.Extension) {
+ if (cur_ext->Type == Mesh::SExtension::EType::Compression_Open3DGC) {
+ // Limitations for meshes when using Open3DGC-compression.
+ // It's a current limitation of sp... Specification have not this part still - about mesh compression. Why only one primitive?
+ // Because glTF is very flexibly. But in fact it ugly flexible. Every primitive can has own set of accessors and accessors can
+ // point to a-a-a-a-any part of buffer (through bufferview of course) and even to another buffer. We know that "Open3DGC-compression"
+ // is applicable only to part of buffer. As we can't guaranty continuity of the data for decoder, we will limit quantity of primitives.
+ // Yes indices, coordinates etc. still can br stored in different buffers, but with current specification it's a exporter problem.
+ // Also primitive can has only one of "POSITION", "NORMAL" and less then "AI_MAX_NUMBER_OF_TEXTURECOORDS" of "TEXCOORD". All accessor
+ // of primitive must point to one continuous region of the buffer.
+ if (mesh.primitives.size() > 2) throw DeadlyImportError("GLTF: When using Open3DGC compression then only one primitive per mesh are allowed.");
+
+ Mesh::SCompression_Open3DGC *o3dgc_ext = (Mesh::SCompression_Open3DGC *)cur_ext;
+ Ref<Buffer> buf = r.buffers.Get(o3dgc_ext->Buffer);
+
+ buf->EncodedRegion_SetCurrent(mesh.id);
+ } else
+ {
+ throw DeadlyImportError("GLTF: Can not import mesh: unknown mesh extension (code: \"", ai_to_string(cur_ext->Type),
+ "\"), only Open3DGC is supported.");
+ }
+ }
+#endif
+ } // if(mesh.Extension.size() > 0)
+
+ meshOffsets.push_back(k);
+ k += unsigned(mesh.primitives.size());
+
+ for (unsigned int p = 0; p < mesh.primitives.size(); ++p) {
+ Mesh::Primitive &prim = mesh.primitives[p];
+
+ aiMesh *aim = new aiMesh();
+ meshes.push_back(aim);
+
+ aim->mName = mesh.id;
+ if (mesh.primitives.size() > 1) {
+ ai_uint32 &len = aim->mName.length;
+ aim->mName.data[len] = '-';
+ len += 1 + ASSIMP_itoa10(aim->mName.data + len + 1, unsigned(MAXLEN - len - 1), p);
+ }
+
+ switch (prim.mode) {
+ case PrimitiveMode_POINTS:
+ aim->mPrimitiveTypes |= aiPrimitiveType_POINT;
+ break;
+
+ case PrimitiveMode_LINES:
+ case PrimitiveMode_LINE_LOOP:
+ case PrimitiveMode_LINE_STRIP:
+ aim->mPrimitiveTypes |= aiPrimitiveType_LINE;
+ break;
+
+ case PrimitiveMode_TRIANGLES:
+ case PrimitiveMode_TRIANGLE_STRIP:
+ case PrimitiveMode_TRIANGLE_FAN:
+ aim->mPrimitiveTypes |= aiPrimitiveType_TRIANGLE;
+ break;
+ }
+
+ Mesh::Primitive::Attributes &attr = prim.attributes;
+
+ if (attr.position.size() > 0 && attr.position[0]) {
+ aim->mNumVertices = attr.position[0]->count;
+ attr.position[0]->ExtractData(aim->mVertices);
+ }
+
+ if (attr.normal.size() > 0 && attr.normal[0]) attr.normal[0]->ExtractData(aim->mNormals);
+
+ for (size_t tc = 0; tc < attr.texcoord.size() && tc < AI_MAX_NUMBER_OF_TEXTURECOORDS; ++tc) {
+ attr.texcoord[tc]->ExtractData(aim->mTextureCoords[tc]);
+ aim->mNumUVComponents[tc] = attr.texcoord[tc]->GetNumComponents();
+
+ aiVector3D *values = aim->mTextureCoords[tc];
+ for (unsigned int i = 0; i < aim->mNumVertices; ++i) {
+ values[i].y = 1 - values[i].y; // Flip Y coords
+ }
+ }
+
+ aiFace *faces = 0;
+ unsigned int nFaces = 0;
+
+ if (prim.indices) {
+ unsigned int count = prim.indices->count;
+
+ Accessor::Indexer data = prim.indices->GetIndexer();
+ ai_assert(data.IsValid());
+
+ switch (prim.mode) {
+ case PrimitiveMode_POINTS: {
+ nFaces = count;
+ faces = new aiFace[nFaces];
+ for (unsigned int i = 0; i < count; ++i) {
+ SetFace(faces[i], data.GetUInt(i));
+ }
+ break;
+ }
+
+ case PrimitiveMode_LINES: {
+ nFaces = count / 2;
+ if (nFaces * 2 != count) {
+ ASSIMP_LOG_WARN("The number of vertices was not compatible with the LINES mode. Some vertices were dropped.");
+ count = nFaces * 2;
+ }
+ faces = new aiFace[nFaces];
+ for (unsigned int i = 0; i < count; i += 2) {
+ SetFace(faces[i / 2], data.GetUInt(i), data.GetUInt(i + 1));
+ }
+ break;
+ }
+
+ case PrimitiveMode_LINE_LOOP:
+ case PrimitiveMode_LINE_STRIP: {
+ nFaces = count - ((prim.mode == PrimitiveMode_LINE_STRIP) ? 1 : 0);
+ faces = new aiFace[nFaces];
+ SetFace(faces[0], data.GetUInt(0), data.GetUInt(1));
+ for (unsigned int i = 2; i < count; ++i) {
+ SetFace(faces[i - 1], faces[i - 2].mIndices[1], data.GetUInt(i));
+ }
+ if (prim.mode == PrimitiveMode_LINE_LOOP) { // close the loop
+ SetFace(faces[count - 1], faces[count - 2].mIndices[1], faces[0].mIndices[0]);
+ }
+ break;
+ }
+
+ case PrimitiveMode_TRIANGLES: {
+ nFaces = count / 3;
+ if (nFaces * 3 != count) {
+ ASSIMP_LOG_WARN("The number of vertices was not compatible with the TRIANGLES mode. Some vertices were dropped.");
+ count = nFaces * 3;
+ }
+ faces = new aiFace[nFaces];
+ for (unsigned int i = 0; i < count; i += 3) {
+ SetFace(faces[i / 3], data.GetUInt(i), data.GetUInt(i + 1), data.GetUInt(i + 2));
+ }
+ break;
+ }
+ case PrimitiveMode_TRIANGLE_STRIP: {
+ nFaces = count - 2;
+ faces = new aiFace[nFaces];
+ SetFace(faces[0], data.GetUInt(0), data.GetUInt(1), data.GetUInt(2));
+ for (unsigned int i = 3; i < count; ++i) {
+ SetFace(faces[i - 2], faces[i - 1].mIndices[1], faces[i - 1].mIndices[2], data.GetUInt(i));
+ }
+ break;
+ }
+ case PrimitiveMode_TRIANGLE_FAN:
+ nFaces = count - 2;
+ faces = new aiFace[nFaces];
+ SetFace(faces[0], data.GetUInt(0), data.GetUInt(1), data.GetUInt(2));
+ for (unsigned int i = 3; i < count; ++i) {
+ SetFace(faces[i - 2], faces[0].mIndices[0], faces[i - 1].mIndices[2], data.GetUInt(i));
+ }
+ break;
+ }
+ } else { // no indices provided so directly generate from counts
+
+ // use the already determined count as it includes checks
+ unsigned int count = aim->mNumVertices;
+
+ switch (prim.mode) {
+ case PrimitiveMode_POINTS: {
+ nFaces = count;
+ faces = new aiFace[nFaces];
+ for (unsigned int i = 0; i < count; ++i) {
+ SetFace(faces[i], i);
+ }
+ break;
+ }
+
+ case PrimitiveMode_LINES: {
+ nFaces = count / 2;
+ if (nFaces * 2 != count) {
+ ASSIMP_LOG_WARN("The number of vertices was not compatible with the LINES mode. Some vertices were dropped.");
+ count = nFaces * 2;
+ }
+ faces = new aiFace[nFaces];
+ for (unsigned int i = 0; i < count; i += 2) {
+ SetFace(faces[i / 2], i, i + 1);
+ }
+ break;
+ }
+
+ case PrimitiveMode_LINE_LOOP:
+ case PrimitiveMode_LINE_STRIP: {
+ nFaces = count - ((prim.mode == PrimitiveMode_LINE_STRIP) ? 1 : 0);
+ faces = new aiFace[nFaces];
+ SetFace(faces[0], 0, 1);
+ for (unsigned int i = 2; i < count; ++i) {
+ SetFace(faces[i - 1], faces[i - 2].mIndices[1], i);
+ }
+ if (prim.mode == PrimitiveMode_LINE_LOOP) { // close the loop
+ SetFace(faces[count - 1], faces[count - 2].mIndices[1], faces[0].mIndices[0]);
+ }
+ break;
+ }
+
+ case PrimitiveMode_TRIANGLES: {
+ nFaces = count / 3;
+ if (nFaces * 3 != count) {
+ ASSIMP_LOG_WARN("The number of vertices was not compatible with the TRIANGLES mode. Some vertices were dropped.");
+ count = nFaces * 3;
+ }
+ faces = new aiFace[nFaces];
+ for (unsigned int i = 0; i < count; i += 3) {
+ SetFace(faces[i / 3], i, i + 1, i + 2);
+ }
+ break;
+ }
+ case PrimitiveMode_TRIANGLE_STRIP: {
+ nFaces = count - 2;
+ faces = new aiFace[nFaces];
+ SetFace(faces[0], 0, 1, 2);
+ for (unsigned int i = 3; i < count; ++i) {
+ SetFace(faces[i - 2], faces[i - 1].mIndices[1], faces[i - 1].mIndices[2], i);
+ }
+ break;
+ }
+ case PrimitiveMode_TRIANGLE_FAN:
+ nFaces = count - 2;
+ faces = new aiFace[nFaces];
+ SetFace(faces[0], 0, 1, 2);
+ for (unsigned int i = 3; i < count; ++i) {
+ SetFace(faces[i - 2], faces[0].mIndices[0], faces[i - 1].mIndices[2], i);
+ }
+ break;
+ }
+ }
+
+ if (faces) {
+ aim->mFaces = faces;
+ aim->mNumFaces = nFaces;
+ const bool validRes = CheckValidFacesIndices(faces, nFaces, aim->mNumVertices);
+ if (!validRes) {
+ ai_assert(validRes);
+ ASSIMP_LOG_WARN("Invalid number of faces detected.");
+ }
+ }
+
+ if (prim.material) {
+ aim->mMaterialIndex = prim.material.GetIndex();
+ }
+ }
+ }
+
+ meshOffsets.push_back(k);
+
+ CopyVector(meshes, mScene->mMeshes, mScene->mNumMeshes);
+}
+
+void glTFImporter::ImportCameras(glTF::Asset &r) {
+ if (!r.cameras.Size()) {
+ return;
+ }
+
+ mScene->mNumCameras = r.cameras.Size();
+ mScene->mCameras = new aiCamera *[r.cameras.Size()];
+ for (size_t i = 0; i < r.cameras.Size(); ++i) {
+ Camera &cam = r.cameras[i];
+
+ aiCamera *aicam = mScene->mCameras[i] = new aiCamera();
+
+ if (cam.type == Camera::Perspective) {
+ aicam->mAspect = cam.perspective.aspectRatio;
+ aicam->mHorizontalFOV = cam.perspective.yfov * ((aicam->mAspect == 0.f) ? 1.f : aicam->mAspect);
+ aicam->mClipPlaneFar = cam.perspective.zfar;
+ aicam->mClipPlaneNear = cam.perspective.znear;
+ } else {
+ aicam->mClipPlaneFar = cam.ortographic.zfar;
+ aicam->mClipPlaneNear = cam.ortographic.znear;
+ aicam->mHorizontalFOV = 0.0;
+ aicam->mAspect = 1.0f;
+ if (0.f != cam.ortographic.ymag) {
+ aicam->mAspect = cam.ortographic.xmag / cam.ortographic.ymag;
+ }
+ }
+ }
+}
+
+void glTFImporter::ImportLights(glTF::Asset &r) {
+ if (!r.lights.Size()) return;
+
+ mScene->mNumLights = r.lights.Size();
+ mScene->mLights = new aiLight *[r.lights.Size()];
+
+ for (size_t i = 0; i < r.lights.Size(); ++i) {
+ Light &l = r.lights[i];
+
+ aiLight *ail = mScene->mLights[i] = new aiLight();
+
+ switch (l.type) {
+ case Light::Type_directional:
+ ail->mType = aiLightSource_DIRECTIONAL;
+ break;
+
+ case Light::Type_spot:
+ ail->mType = aiLightSource_SPOT;
+ break;
+
+ case Light::Type_ambient:
+ ail->mType = aiLightSource_AMBIENT;
+ break;
+
+ default: // Light::Type_point
+ ail->mType = aiLightSource_POINT;
+ break;
+ }
+
+ CopyValue(l.color, ail->mColorAmbient);
+ CopyValue(l.color, ail->mColorDiffuse);
+ CopyValue(l.color, ail->mColorSpecular);
+
+ ail->mAngleOuterCone = l.falloffAngle;
+ ail->mAngleInnerCone = l.falloffExponent; // TODO fix this, it does not look right at all
+
+ ail->mAttenuationConstant = l.constantAttenuation;
+ ail->mAttenuationLinear = l.linearAttenuation;
+ ail->mAttenuationQuadratic = l.quadraticAttenuation;
+ }
+}
+
+aiNode *ImportNode(aiScene *pScene, glTF::Asset &r, std::vector<unsigned int> &meshOffsets, glTF::Ref<glTF::Node> &ptr) {
+ Node &node = *ptr;
+
+ aiNode *ainode = new aiNode(node.id);
+
+ if (!node.children.empty()) {
+ ainode->mNumChildren = unsigned(node.children.size());
+ ainode->mChildren = new aiNode *[ainode->mNumChildren];
+
+ for (unsigned int i = 0; i < ainode->mNumChildren; ++i) {
+ aiNode *child = ImportNode(pScene, r, meshOffsets, node.children[i]);
+ child->mParent = ainode;
+ ainode->mChildren[i] = child;
+ }
+ }
+
+ aiMatrix4x4 &matrix = ainode->mTransformation;
+ if (node.matrix.isPresent) {
+ CopyValue(node.matrix.value, matrix);
+ } else {
+ if (node.translation.isPresent) {
+ aiVector3D trans;
+ CopyValue(node.translation.value, trans);
+ aiMatrix4x4 t;
+ aiMatrix4x4::Translation(trans, t);
+ matrix = t * matrix;
+ }
+
+ if (node.scale.isPresent) {
+ aiVector3D scal(1.f);
+ CopyValue(node.scale.value, scal);
+ aiMatrix4x4 s;
+ aiMatrix4x4::Scaling(scal, s);
+ matrix = s * matrix;
+ }
+
+ if (node.rotation.isPresent) {
+ aiQuaternion rot;
+ CopyValue(node.rotation.value, rot);
+ matrix = aiMatrix4x4(rot.GetMatrix()) * matrix;
+ }
+ }
+
+ if (!node.meshes.empty()) {
+ int count = 0;
+ for (size_t i = 0; i < node.meshes.size(); ++i) {
+ int idx = node.meshes[i].GetIndex();
+ count += meshOffsets[idx + 1] - meshOffsets[idx];
+ }
+
+ ainode->mNumMeshes = count;
+ ainode->mMeshes = new unsigned int[count];
+
+ int k = 0;
+ for (size_t i = 0; i < node.meshes.size(); ++i) {
+ int idx = node.meshes[i].GetIndex();
+ for (unsigned int j = meshOffsets[idx]; j < meshOffsets[idx + 1]; ++j, ++k) {
+ ainode->mMeshes[k] = j;
+ }
+ }
+ }
+
+ if (node.camera) {
+ pScene->mCameras[node.camera.GetIndex()]->mName = ainode->mName;
+ }
+
+ if (node.light) {
+ pScene->mLights[node.light.GetIndex()]->mName = ainode->mName;
+ }
+
+ return ainode;
+}
+
+void glTFImporter::ImportNodes(glTF::Asset &r) {
+ if (!r.scene) return;
+
+ std::vector<Ref<Node>> rootNodes = r.scene->nodes;
+
+ // The root nodes
+ unsigned int numRootNodes = unsigned(rootNodes.size());
+ if (numRootNodes == 1) { // a single root node: use it
+ mScene->mRootNode = ImportNode(mScene, r, meshOffsets, rootNodes[0]);
+ } else if (numRootNodes > 1) { // more than one root node: create a fake root
+ aiNode *root = new aiNode("ROOT");
+ root->mChildren = new aiNode *[numRootNodes];
+ for (unsigned int i = 0; i < numRootNodes; ++i) {
+ aiNode *node = ImportNode(mScene, r, meshOffsets, rootNodes[i]);
+ node->mParent = root;
+ root->mChildren[root->mNumChildren++] = node;
+ }
+ mScene->mRootNode = root;
+ }
+
+ //if (!mScene->mRootNode) {
+ // mScene->mRootNode = new aiNode("EMPTY");
+ //}
+}
+
+void glTFImporter::ImportEmbeddedTextures(glTF::Asset &r) {
+ embeddedTexIdxs.resize(r.images.Size(), -1);
+
+ int numEmbeddedTexs = 0;
+ for (size_t i = 0; i < r.images.Size(); ++i) {
+ if (r.images[i].HasData())
+ numEmbeddedTexs += 1;
+ }
+
+ if (numEmbeddedTexs == 0)
+ return;
+
+ mScene->mTextures = new aiTexture *[numEmbeddedTexs];
+
+ // Add the embedded textures
+ for (size_t i = 0; i < r.images.Size(); ++i) {
+ Image &img = r.images[i];
+ if (!img.HasData()) continue;
+
+ int idx = mScene->mNumTextures++;
+ embeddedTexIdxs[i] = idx;
+
+ aiTexture *tex = mScene->mTextures[idx] = new aiTexture();
+
+ size_t length = img.GetDataLength();
+ void *data = img.StealData();
+
+ tex->mFilename = img.name;
+ tex->mWidth = static_cast<unsigned int>(length);
+ tex->mHeight = 0;
+ tex->pcData = reinterpret_cast<aiTexel *>(data);
+
+ if (!img.mimeType.empty()) {
+ const char *ext = strchr(img.mimeType.c_str(), '/') + 1;
+ if (ext) {
+ if (strcmp(ext, "jpeg") == 0) ext = "jpg";
+
+ size_t len = strlen(ext);
+ if (len <= 3) {
+ strcpy(tex->achFormatHint, ext);
+ }
+ }
+ }
+ }
+}
+
+void glTFImporter::ImportCommonMetadata(glTF::Asset &a) {
+ ai_assert(mScene->mMetaData == nullptr);
+ const bool hasVersion = !a.asset.version.empty();
+ const bool hasGenerator = !a.asset.generator.empty();
+ const bool hasCopyright = !a.asset.copyright.empty();
+ if (hasVersion || hasGenerator || hasCopyright) {
+ mScene->mMetaData = new aiMetadata;
+ if (hasVersion) {
+ mScene->mMetaData->Add(AI_METADATA_SOURCE_FORMAT_VERSION, aiString(a.asset.version));
+ }
+ if (hasGenerator) {
+ mScene->mMetaData->Add(AI_METADATA_SOURCE_GENERATOR, aiString(a.asset.generator));
+ }
+ if (hasCopyright) {
+ mScene->mMetaData->Add(AI_METADATA_SOURCE_COPYRIGHT, aiString(a.asset.copyright));
+ }
+ }
+}
+
+void glTFImporter::InternReadFile(const std::string &pFile, aiScene *pScene, IOSystem *pIOHandler) {
+ // clean all member arrays
+ meshOffsets.clear();
+ embeddedTexIdxs.clear();
+
+ this->mScene = pScene;
+
+ // read the asset file
+ glTF::Asset asset(pIOHandler);
+ asset.Load(pFile, GetExtension(pFile) == "glb");
+
+ //
+ // Copy the data out
+ //
+
+ ImportEmbeddedTextures(asset);
+ ImportMaterials(asset);
+
+ ImportMeshes(asset);
+
+ ImportCameras(asset);
+ ImportLights(asset);
+
+ ImportNodes(asset);
+ ImportCommonMetadata(asset);
+
+ if (pScene->mNumMeshes == 0) {
+ pScene->mFlags |= AI_SCENE_FLAGS_INCOMPLETE;
+ }
+}
+
+#endif // ASSIMP_BUILD_NO_GLTF_IMPORTER
diff --git a/libs/assimp/code/AssetLib/glTF/glTFImporter.h b/libs/assimp/code/AssetLib/glTF/glTFImporter.h
new file mode 100644
index 0000000..529da53
--- /dev/null
+++ b/libs/assimp/code/AssetLib/glTF/glTFImporter.h
@@ -0,0 +1,89 @@
+/*
+Open Asset Import Library (assimp)
+----------------------------------------------------------------------
+
+Copyright (c) 2006-2022, assimp team
+
+
+All rights reserved.
+
+Redistribution and use of this software in source and binary forms,
+with or without modification, are permitted provided that the
+following conditions are met:
+
+* Redistributions of source code must retain the above
+copyright notice, this list of conditions and the
+following disclaimer.
+
+* Redistributions in binary form must reproduce the above
+copyright notice, this list of conditions and the
+following disclaimer in the documentation and/or other
+materials provided with the distribution.
+
+* Neither the name of the assimp team, nor the names of its
+contributors may be used to endorse or promote products
+derived from this software without specific prior
+written permission of the assimp team.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+----------------------------------------------------------------------
+*/
+#pragma once
+#ifndef AI_GLTFIMPORTER_H_INC
+#define AI_GLTFIMPORTER_H_INC
+
+#include <assimp/BaseImporter.h>
+#include <assimp/DefaultIOSystem.h>
+
+struct aiNode;
+
+namespace glTF {
+ class Asset;
+
+}
+
+namespace Assimp {
+
+/**
+ * Load the glTF format.
+ * https://github.com/KhronosGroup/glTF/tree/master/specification
+ */
+class glTFImporter : public BaseImporter {
+public:
+ glTFImporter();
+ ~glTFImporter() override;
+ bool CanRead(const std::string &pFile, IOSystem *pIOHandler, bool checkSig) const override;
+
+protected:
+ const aiImporterDesc *GetInfo() const override;
+ void InternReadFile(const std::string &pFile, aiScene *pScene, IOSystem *pIOHandler) override;
+
+private:
+ void ImportEmbeddedTextures(glTF::Asset &a);
+ void ImportMaterials(glTF::Asset &a);
+ void ImportMeshes(glTF::Asset &a);
+ void ImportCameras(glTF::Asset &a);
+ void ImportLights(glTF::Asset &a);
+ void ImportNodes(glTF::Asset &a);
+ void ImportCommonMetadata(glTF::Asset &a);
+
+private:
+ std::vector<unsigned int> meshOffsets;
+ std::vector<int> embeddedTexIdxs;
+ aiScene *mScene;
+};
+
+} // namespace Assimp
+
+#endif // AI_GLTFIMPORTER_H_INC
--
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