switch to tinyobj and nanovg from assimp and cairo

1 files changed, 0 insertions, 1242 deletions

diff --git a/libs/assimp/code/AssetLib/glTF2/glTF2Asset.h b/libs/assimp/code/AssetLib/glTF2/glTF2Asset.h
deleted file mode 100644
index c597fc9..0000000
--- a/libs/assimp/code/AssetLib/glTF2/glTF2Asset.h
+++ /dev/null
@@ -1,1242 +0,0 @@
-/*
-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_materials_pbrSpecularGlossiness full
- *   KHR_materials_unlit full
- *   KHR_lights_punctual full
- *   KHR_materials_sheen full
- *   KHR_materials_clearcoat full
- *   KHR_materials_transmission full
- *   KHR_materials_volume full
- *   KHR_materials_ior full
- */
-#ifndef GLTF2ASSET_H_INC
-#define GLTF2ASSET_H_INC
-
-#if !defined(ASSIMP_BUILD_NO_GLTF_IMPORTER) && !defined(ASSIMP_BUILD_NO_GLTF2_IMPORTER)
-
-#include <assimp/Exceptional.h>
-
-#include <algorithm>
-#include <list>
-#include <map>
-#include <set>
-#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/document.h>
-#include <rapidjson/error/en.h>
-#include <rapidjson/rapidjson.h>
-#include <rapidjson/schema.h>
-
-#if (__GNUC__ == 8 && __GNUC_MINOR__ >= 0)
-#   pragma GCC diagnostic pop
-#endif
-
-#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
-#   define gltf_unordered_set set
-#endif
-
-#ifdef ASSIMP_GLTF_USE_UNORDERED_MULTIMAP
-#   include <unordered_map>
-#   include <unordered_set>
-#   if defined(_MSC_VER) && _MSC_VER <= 1600
-#       define gltf_unordered_map tr1::unordered_map
-#       define gltf_unordered_set tr1::unordered_set
-#   else
-#       define gltf_unordered_map unordered_map
-#       define gltf_unordered_set unordered_set
-#   endif
-#endif
-// clang-format on
-
-#include <assimp/StringUtils.h>
-#include <assimp/material.h>
-#include <assimp/GltfMaterial.h>
-
-#include "AssetLib/glTF/glTFCommon.h"
-
-namespace glTF2 {
-
-using glTFCommon::Nullable;
-using glTFCommon::Ref;
-using glTFCommon::IOStream;
-using glTFCommon::IOSystem;
-using glTFCommon::shared_ptr;
-
-using rapidjson::Document;
-using rapidjson::Value;
-
-class Asset;
-class AssetWriter;
-
-struct BufferView; // here due to cross-reference
-struct Texture;
-struct Skin;
-
-using glTFCommon::mat4;
-using glTFCommon::vec3;
-using glTFCommon::vec4;
-
-//! Magic number for GLB files
-#define AI_GLB_MAGIC_NUMBER "glTF"
-
-#ifdef ASSIMP_API
-#include <assimp/Compiler/pushpack1.h>
-#endif
-
-//! For binary .glb files
-//! 12-byte header (+ the JSON + a "body" data section)
-struct GLB_Header {
-    uint8_t magic[4]; //!< Magic number: "glTF"
-    uint32_t version; //!< Version number (always 2 as of the last update)
-    uint32_t length; //!< Total length of the Binary glTF, including header, scene, and body, in bytes
-} PACK_STRUCT;
-
-struct GLB_Chunk {
-    uint32_t chunkLength;
-    uint32_t chunkType;
-} PACK_STRUCT;
-
-#ifdef ASSIMP_API
-#include <assimp/Compiler/poppack1.h>
-#endif
-
-//! Values for the GLB_Chunk::chunkType field
-enum ChunkType {
-    ChunkType_JSON = 0x4E4F534A,
-    ChunkType_BIN = 0x004E4942
-};
-
-//! 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:
-        throw DeadlyImportError("GLTF: Unsupported Component Type ", ai_to_string(t));
-    }
-}
-
-//! 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 class SamplerMagFilter : unsigned int {
-    UNSET = 0,
-    SamplerMagFilter_Nearest = 9728,
-    SamplerMagFilter_Linear = 9729
-};
-
-//! Values for the Sampler::minFilter field
-enum class SamplerMinFilter : unsigned int {
-    UNSET = 0,
-    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 class SamplerWrap : unsigned int {
-    UNSET = 0,
-    Clamp_To_Edge = 33071,
-    Mirrored_Repeat = 33648,
-    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 Animation::Target::path field
-enum AnimationPath {
-    AnimationPath_TRANSLATION,
-    AnimationPath_ROTATION,
-    AnimationPath_SCALE,
-    AnimationPath_WEIGHTS,
-};
-
-//! Values for the Animation::Sampler::interpolation field
-enum Interpolation {
-    Interpolation_LINEAR,
-    Interpolation_STEP,
-    Interpolation_CUBICSPLINE,
-};
-
-//! Values for the Accessor::type field (helper class)
-class AttribType {
-public:
-    enum Value { SCALAR,
-        VEC2,
-        VEC3,
-        VEC4,
-        MAT2,
-        MAT3,
-        MAT4 };
-
-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]; };
-
-public:
-    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;
-    }
-};
-
-// 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 }
-        };
-
-
-struct CustomExtension {
-
-    //
-    // A struct containing custom extension data added to a glTF2 file
-    // Has to contain Object, Array, String, Double, Uint64, and Int64 at a minimum
-    // String, Double, Uint64, and Int64 are stored in the Nullables
-    // Object and Array are stored in the std::vector
-    //
-    std::string name;
-
-    Nullable<std::string> mStringValue;
-    Nullable<double> mDoubleValue;
-    Nullable<uint64_t> mUint64Value;
-    Nullable<int64_t> mInt64Value;
-    Nullable<bool> mBoolValue;
-
-    // std::vector<CustomExtension> handles both Object and Array
-    Nullable<std::vector<CustomExtension>> mValues;
-
-    operator bool() const {
-        return Size() != 0;
-    }
-
-    size_t Size() const {
-        if (mValues.isPresent) {
-            return mValues.value.size();
-        } else if (mStringValue.isPresent || mDoubleValue.isPresent || mUint64Value.isPresent || mInt64Value.isPresent || mBoolValue.isPresent) {
-            return 1;
-        }
-        return 0;
-    }
-
-    CustomExtension() = default;
-
-    ~CustomExtension() = default;
-
-    CustomExtension(const CustomExtension &other) :
-            name(other.name),
-            mStringValue(other.mStringValue),
-            mDoubleValue(other.mDoubleValue),
-            mUint64Value(other.mUint64Value),
-            mInt64Value(other.mInt64Value),
-            mBoolValue(other.mBoolValue),
-            mValues(other.mValues) {
-        // empty
-    }
-};
-
-//! Base class for all glTF top-level objects
-struct Object {
-    int index; //!< The index of this object within its property container
-    int oIndex; //!< The original index of this object defined in the JSON
-    std::string id; //!< The globally unique ID used to reference this object
-    std::string name; //!< The user-defined name of this object
-
-    CustomExtension customExtensions;
-    CustomExtension extras;
-
-    //! Objects marked as special are not exported (used to emulate the binary body buffer)
-    virtual bool IsSpecial() const { return false; }
-
-    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; }
-
-    inline Value *FindString(Value &val, const char *id);
-    inline Value *FindNumber(Value &val, const char *id);
-    inline Value *FindUInt(Value &val, const char *id);
-    inline Value *FindArray(Value &val, const char *id);
-    inline Value *FindObject(Value &val, const char *id);
-    inline Value *FindExtension(Value &val, const char *extensionId);
-
-    inline void ReadExtensions(Value &val);
-    inline void ReadExtras(Value &val);
-};
-
-//
-// Classes for each glTF top-level object type
-//
-
-//! A buffer points to binary geometry, animation, or skins.
-struct Buffer : public Object {
-    /********************* Types *********************/
-public:
-    enum Type {
-        Type_arraybuffer,
-        Type_text
-    };
-
-    /// \struct SEncodedRegion
-    /// 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.
-
-        /// \fn SEncodedRegion(const size_t pOffset, const size_t pEncodedData_Length, uint8_t* pDecodedData, const size_t pDecodedData_Length, const std::string pID)
-        /// 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) {}
-
-        /// \fn ~SEncodedRegion()
-        /// Destructor.
-        ~SEncodedRegion() { delete[] DecodedData; }
-    };
-
-    /******************* Variables *******************/
-
-    //std::string uri; //!< The uri of the buffer. Can be a filepath, a data uri, etc. (required)
-    size_t byteLength; //!< The length of the buffer in bytes. (default: 0)
-    //std::string type; //!< XMLHttpRequest responseType (default: "arraybuffer")
-    size_t capacity = 0; //!< The capacity 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 of course) 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)
-
-    /// \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);
-
-    /// \fn void EncodedRegion_Mark(const size_t pOffset, const size_t pEncodedData_Length, uint8_t* pDecodedData, const size_t pDecodedData_Length, const std::string& pID)
-    /// 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);
-
-    /// \fn void EncodedRegion_SetCurrent(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);
-
-    /// \fn bool ReplaceData(const size_t pBufferData_Offset, const size_t pBufferData_Count, const uint8_t* pReplace_Data, const size_t pReplace_Count)
-    /// 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);
-    bool ReplaceData_joint(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 override { 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)
-    unsigned int byteStride; //!< The stride, in bytes, between attributes referenced by this accessor. (default: 0)
-
-    BufferViewTarget target; //! The target that the WebGL buffer should be bound to.
-
-    void Read(Value &obj, Asset &r);
-    uint8_t *GetPointer(size_t accOffset);
-};
-
-//! 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 {
-    struct Sparse;
-
-    Ref<BufferView> bufferView; //!< The ID of the bufferView. (required)
-    size_t byteOffset; //!< The offset relative to the start of the bufferView in bytes. (required)
-    ComponentType componentType; //!< The datatype of components in the attribute. (required)
-    size_t 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.
-    std::unique_ptr<Sparse> sparse;
-    std::unique_ptr<Buffer> decodedBuffer; // Packed decoded data, returned instead of original bufferView if present
-
-    unsigned int GetNumComponents();
-    unsigned int GetBytesPerComponent();
-    unsigned int GetElementSize();
-
-    inline uint8_t *GetPointer();
-    inline size_t GetStride();
-    inline size_t GetMaxByteSize();
-
-    template <class T>
-    void ExtractData(T *&outData);
-
-    void WriteData(size_t count, const void *src_buffer, size_t src_stride);
-    void WriteSparseValues(size_t count, const void *src_data, size_t src_dataStride);
-    void WriteSparseIndices(size_t count, const void *src_idx, size_t src_idxStride);
-
-    //! 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 != nullptr;
-        }
-    };
-
-    inline Indexer GetIndexer() {
-        return Indexer(*this);
-    }
-
-    Accessor() {}
-    void Read(Value &obj, Asset &r);
-
-    //sparse
-    struct Sparse {
-        size_t count;
-        ComponentType indicesType;
-        Ref<BufferView> indices;
-        size_t indicesByteOffset;
-        Ref<BufferView> values;
-        size_t valuesByteOffset;
-
-        std::vector<uint8_t> data; //!< Actual data, which may be defaulted to an array of zeros or the original data, with the sparse buffer view applied on top of it.
-
-        void PopulateData(size_t numBytes, uint8_t *bytes);
-        void PatchData(unsigned int elementSize);
-    };
-};
-
-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;
-    } cameraProperties;
-
-    Camera() :
-            type(Perspective),
-            cameraProperties() {
-        // empty
-    }
-    void Read(Value &obj, Asset &r);
-};
-
-//! A light (from KHR_lights_punctual extension)
-struct Light : public Object {
-    enum Type {
-        Directional,
-        Point,
-        Spot
-    };
-
-    Type type;
-
-    vec3 color;
-    float intensity;
-    Nullable<float> range;
-
-    float innerConeAngle;
-    float outerConeAngle;
-
-    Light() {}
-    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;
-
-private:
-    std::unique_ptr<uint8_t[]> mData;
-    size_t mDataLength;
-
-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);
-};
-
-const vec4 defaultBaseColor = { 1, 1, 1, 1 };
-const vec3 defaultEmissiveFactor = { 0, 0, 0 };
-const vec4 defaultDiffuseFactor = { 1, 1, 1, 1 };
-const vec3 defaultSpecularFactor = { 1, 1, 1 };
-const vec3 defaultSheenFactor = { 0, 0, 0 };
-const vec3 defaultAttenuationColor = { 1, 1, 1 };
-
-struct TextureInfo {
-    Ref<Texture> texture;
-    unsigned int index;
-    unsigned int texCoord = 0;
-
-    bool textureTransformSupported = false;
-    struct TextureTransformExt {
-        float offset[2];
-        float rotation;
-        float scale[2];
-    } TextureTransformExt_t;
-};
-
-struct NormalTextureInfo : TextureInfo {
-    float scale = 1;
-};
-
-struct OcclusionTextureInfo : TextureInfo {
-    float strength = 1;
-};
-
-struct PbrMetallicRoughness {
-    vec4 baseColorFactor;
-    TextureInfo baseColorTexture;
-    TextureInfo metallicRoughnessTexture;
-    float metallicFactor;
-    float roughnessFactor;
-};
-
-struct PbrSpecularGlossiness {
-    vec4 diffuseFactor;
-    vec3 specularFactor;
-    float glossinessFactor;
-    TextureInfo diffuseTexture;
-    TextureInfo specularGlossinessTexture;
-
-    PbrSpecularGlossiness() { SetDefaults(); }
-    void SetDefaults();
-};
-
-struct MaterialSheen {
-    vec3 sheenColorFactor;
-    float sheenRoughnessFactor;
-    TextureInfo sheenColorTexture;
-    TextureInfo sheenRoughnessTexture;
-
-    MaterialSheen() { SetDefaults(); }
-    void SetDefaults();
-};
-
-struct MaterialClearcoat {
-    float clearcoatFactor = 0.f;
-    float clearcoatRoughnessFactor = 0.f;
-    TextureInfo clearcoatTexture;
-    TextureInfo clearcoatRoughnessTexture;
-    NormalTextureInfo clearcoatNormalTexture;
-};
-
-struct MaterialTransmission {
-    TextureInfo transmissionTexture;
-    float transmissionFactor = 0.f;
-};
-
-struct MaterialVolume {
-    float thicknessFactor = 0.f;
-    TextureInfo thicknessTexture;
-    float attenuationDistance = 0.f;
-    vec3 attenuationColor;
-
-    MaterialVolume() { SetDefaults(); }
-    void SetDefaults();
-};
-
-struct MaterialIOR {
-    float ior = 0.f;
-
-    MaterialIOR() { SetDefaults(); }
-    void SetDefaults();
-};
-
-//! The material appearance of a primitive.
-struct Material : public Object {
-    //PBR metallic roughness properties
-    PbrMetallicRoughness pbrMetallicRoughness;
-
-    //other basic material properties
-    NormalTextureInfo normalTexture;
-    OcclusionTextureInfo occlusionTexture;
-    TextureInfo emissiveTexture;
-    vec3 emissiveFactor;
-    std::string alphaMode;
-    float alphaCutoff;
-    bool doubleSided;
-
-    //extension: KHR_materials_pbrSpecularGlossiness
-    Nullable<PbrSpecularGlossiness> pbrSpecularGlossiness;
-
-    //extension: KHR_materials_sheen
-    Nullable<MaterialSheen> materialSheen;
-
-    //extension: KHR_materials_clearcoat
-    Nullable<MaterialClearcoat> materialClearcoat;
-
-    //extension: KHR_materials_transmission
-    Nullable<MaterialTransmission> materialTransmission;
-
-    //extension: KHR_materials_volume
-    Nullable<MaterialVolume> materialVolume;
-
-    //extension: KHR_materials_ior
-    Nullable<MaterialIOR> materialIOR;
-    
-    //extension: KHR_materials_unlit
-    bool unlit;
-
-    Material() { SetDefaults(); }
-    void Read(Value &obj, Asset &r);
-    void SetDefaults();
-
-    inline void SetTextureProperties(Asset &r, Value *prop, TextureInfo &out);
-    inline void ReadTextureProperty(Asset &r, Value &vals, const char *propName, TextureInfo &out);
-    inline void ReadTextureProperty(Asset &r, Value &vals, const char *propName, NormalTextureInfo &out);
-    inline void ReadTextureProperty(Asset &r, Value &vals, const char *propName, OcclusionTextureInfo &out);
-};
-
-//! 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 {
-    using AccessorList = std::vector<Ref<Accessor>>;
-
-    struct Primitive {
-        PrimitiveMode mode;
-
-        struct Attributes {
-            AccessorList position, normal, tangent, texcoord, color, joint, jointmatrix, weight;
-        } attributes;
-
-        Ref<Accessor> indices;
-
-        Ref<Material> material;
-
-        struct Target {
-            AccessorList position, normal, tangent;
-        };
-        std::vector<Target> targets;
-
-        // extension: FB_ngon_encoding
-        bool ngonEncoded;
-
-        Primitive(): ngonEncoded(false) {}
-    };
-
-    std::vector<Primitive> primitives;
-
-    std::vector<float> weights;
-    std::vector<std::string> targetNames;
-
-    Mesh() {}
-
-    /// 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);
-};
-
-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.
-    SamplerMinFilter minFilter; //!< The texture minification filter.
-    SamplerWrap wrapS; //!< The texture wrapping in the S direction.
-    SamplerWrap wrapT; //!< The texture wrapping in the T direction.
-
-    Sampler() { SetDefaults(); }
-    void Read(Value &obj, Asset &r);
-    void SetDefaults();
-};
-
-struct Scene : public Object {
-    std::string name;
-    std::vector<Ref<Node>> nodes;
-
-    Scene() {}
-    void Read(Value &obj, Asset &r);
-};
-
-struct Shader : public Object {
-    Shader() {}
-    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() {}
-    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)
-
-    //TextureFormat format; //!< The texture's format. (default: TextureFormat_RGBA)
-    //TextureFormat internalFormat; //!< The texture's internal format. (default: TextureFormat_RGBA)
-
-    //TextureTarget target; //!< The target that the WebGL texture should be bound to. (default: TextureTarget_TEXTURE_2D)
-    //TextureType type; //!< Texel datatype. (default: TextureType_UNSIGNED_BYTE)
-
-    Texture() {}
-    void Read(Value &obj, Asset &r);
-};
-
-struct Animation : public Object {
-    struct Sampler {
-        Sampler() :
-                interpolation(Interpolation_LINEAR) {}
-
-        Ref<Accessor> input; //!< Accessor reference to the buffer storing the key-frame times.
-        Ref<Accessor> output; //!< Accessor reference to the buffer storing the key-frame values.
-        Interpolation interpolation; //!< Type of interpolation algorithm to use between key-frames.
-    };
-
-    struct Target {
-        Target() :
-                path(AnimationPath_TRANSLATION) {}
-
-        Ref<Node> node; //!< The node to animate.
-        AnimationPath path; //!< The property of the node to animate.
-    };
-
-    struct Channel {
-        Channel() :
-                sampler(-1) {}
-
-        int sampler; //!< The sampler index containing the animation data.
-        Target target; //!< The node and property to animate.
-    };
-
-    std::vector<Sampler> samplers; //!< All the key-frame data for this animation.
-    std::vector<Channel> channels; //!< Data to connect nodes to key-frames.
-
-    Animation() {}
-    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;
-
-    using Dict = typename std::gltf_unordered_map<unsigned int, unsigned int>;
-    using IdDict = typename std::gltf_unordered_map<std::string, unsigned int>;
-
-    std::vector<T *> mObjs; //! The read objects
-    Dict mObjsByOIndex; //! The read objects accessible by original index
-    IdDict 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
-
-    std::gltf_unordered_set<unsigned int> mRecursiveReferenceCheck; //! Used by Retrieve to prevent recursive lookups
-
-    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> Retrieve(unsigned int i);
-
-    Ref<T> Get(unsigned int i);
-    Ref<T> Get(const char *id);
-
-    Ref<T> Create(const char *id);
-    Ref<T> Create(const std::string &id) { return Create(id.c_str()); }
-
-    unsigned int Remove(const char *id);
-
-    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.
-
-    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
-
-    void Read(Document &doc);
-
-    AssetMetadata() :
-            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;
-
-    std::vector<LazyDictBase *> mDicts;
-
-public:
-    //! Keeps info about the enabled extensions
-    struct Extensions {
-        bool KHR_materials_pbrSpecularGlossiness;
-        bool KHR_materials_unlit;
-        bool KHR_lights_punctual;
-        bool KHR_texture_transform;
-        bool KHR_materials_sheen;
-        bool KHR_materials_clearcoat;
-        bool KHR_materials_transmission;
-        bool KHR_materials_volume;
-        bool KHR_materials_ior;
-        bool KHR_draco_mesh_compression;
-        bool FB_ngon_encoding;
-        bool KHR_texture_basisu;
-
-        Extensions() :
-                KHR_materials_pbrSpecularGlossiness(false), 
-                KHR_materials_unlit(false), 
-                KHR_lights_punctual(false), 
-                KHR_texture_transform(false), 
-                KHR_materials_sheen(false), 
-                KHR_materials_clearcoat(false), 
-                KHR_materials_transmission(false), 
-                KHR_materials_volume(false),
-                KHR_materials_ior(false),
-                KHR_draco_mesh_compression(false),
-                FB_ngon_encoding(false),
-                KHR_texture_basisu(false) {
-            // empty
-        }
-    } extensionsUsed;
-
-    //! Keeps info about the required extensions
-    struct RequiredExtensions {
-        bool KHR_draco_mesh_compression;
-        bool KHR_texture_basisu;
-
-        RequiredExtensions() : KHR_draco_mesh_compression(false), KHR_texture_basisu(false) {
-            // empty
-        }
-    } extensionsRequired;
-
-    AssetMetadata asset;
-    Value *extras;
-
-    // Dictionaries for each type of object
-
-    LazyDict<Accessor> accessors;
-    LazyDict<Animation> animations;
-    LazyDict<Buffer> buffers;
-    LazyDict<BufferView> bufferViews;
-    LazyDict<Camera> cameras;
-    LazyDict<Light> lights;
-    LazyDict<Image> images;
-    LazyDict<Material> materials;
-    LazyDict<Mesh> meshes;
-    LazyDict<Node> nodes;
-    LazyDict<Sampler> samplers;
-    LazyDict<Scene> scenes;
-    LazyDict<Skin> skins;
-    LazyDict<Texture> textures;
-
-    Ref<Scene> scene;
-
-public:
-    Asset(IOSystem *io = nullptr, rapidjson::IRemoteSchemaDocumentProvider *schemaDocumentProvider = nullptr) :
-            mDicts(),
-            extensionsUsed(),
-            extensionsRequired(),
-            asset(),
-            extras(nullptr),
-            accessors(*this, "accessors"),
-            animations(*this, "animations"),
-            buffers(*this, "buffers"),
-            bufferViews(*this, "bufferViews"),
-            cameras(*this, "cameras"),
-            lights(*this, "lights", "KHR_lights_punctual"),
-            images(*this, "images"),
-            materials(*this, "materials"),
-            meshes(*this, "meshes"),
-            nodes(*this, "nodes"),
-            samplers(*this, "samplers"),
-            scenes(*this, "scenes"),
-            skins(*this, "skins"),
-            textures(*this, "textures") ,
-            mIOSystem(io),
-            mSchemaDocumentProvider(schemaDocumentProvider) {
-        // empty
-    }
-
-    //! Main function
-    void Load(const std::string &file, bool isBinary = false);
-
-    //! Parse the AssetMetadata and check that the version is 2.
-    bool CanRead(const std::string &pFile, bool isBinary = false);
-
-    //! Enables binary encoding 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; }
-
-    Asset(Asset &) = delete;
-    Asset &operator=(const Asset &) = delete;
-
-private:
-    void ReadBinaryHeader(IOStream &stream, std::vector<char> &sceneData);
-
-    /// Obtain a JSON document from the stream.
-    /// \param second argument is a buffer used by the document. It must be kept
-    /// alive while the document is in use.
-    Document ReadDocument(IOStream& stream, bool isBinary, std::vector<char>& sceneData);
-
-    void ReadExtensionsUsed(Document &doc);
-    void ReadExtensionsRequired(Document &doc);
-
-    IOStream *OpenFile(const std::string &path, const char *mode, bool absolute = false);
-
-private:
-    IOSystem *mIOSystem;
-    rapidjson::IRemoteSchemaDocumentProvider *mSchemaDocumentProvider;
-    std::string mCurrentAssetDir;
-    size_t mSceneLength;
-    size_t mBodyOffset;
-    size_t mBodyLength;
-    IdMap mUsedIds;
-    Ref<Buffer> mBodyBuffer;
-};
-
-inline std::string getContextForErrorMessages(const std::string &id, const std::string &name) {
-    std::string context = id;
-    if (!name.empty()) {
-        context += " (\"" + name + "\")";
-    }
-    return context;
-}
-
-} // namespace glTF2
-
-// Include the implementation of the methods
-#include "glTF2Asset.inl"
-
-#endif // ASSIMP_BUILD_NO_GLTF_IMPORTER
-
-#endif // GLTF2ASSET_H_INC