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-rw-r--r--src/mesh/assimp-master/code/AssetLib/glTF/glTFImporter.cpp725
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diff --git a/src/mesh/assimp-master/code/AssetLib/glTF/glTFImporter.cpp b/src/mesh/assimp-master/code/AssetLib/glTF/glTFImporter.cpp
deleted file mode 100644
index 81db12e..0000000
--- a/src/mesh/assimp-master/code/AssetLib/glTF/glTFImporter.cpp
+++ /dev/null
@@ -1,725 +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.
-
-----------------------------------------------------------------------
-*/
-
-#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