| /* |
| Open Asset Import Library (assimp) |
| ---------------------------------------------------------------------- |
| |
| Copyright (c) 2006-2017, 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 "glTFImporter.h" |
| #include "StringComparison.h" |
| #include "StringUtils.h" |
| |
| #include <assimp/Importer.hpp> |
| #include <assimp/scene.h> |
| #include <assimp/ai_assert.h> |
| #include <assimp/DefaultLogger.hpp> |
| #include <assimp/importerdesc.h> |
| |
| #include <memory> |
| |
| #include "MakeVerboseFormat.h" |
| |
| #include "glTFAsset.h" |
| // This is included here so WriteLazyDict<T>'s definition is found. |
| #include "glTFAssetWriter.h" |
| |
| 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( NULL ) { |
| // empty |
| } |
| |
| glTFImporter::~glTFImporter() { |
| // empty |
| } |
| |
| const aiImporterDesc* glTFImporter::GetInfo() const |
| { |
| return &desc; |
| } |
| |
| bool glTFImporter::CanRead(const std::string& pFile, IOSystem* pIOHandler, bool checkSig) const |
| { |
| const std::string &extension = GetExtension(pFile); |
| |
| if (extension != "gltf" && extension != "glb") |
| return false; |
| |
| if (checkSig && pIOHandler) { |
| glTF::Asset asset(pIOHandler); |
| try { |
| asset.Load(pFile, extension == "glb"); |
| std::string version = asset.asset.version; |
| return !version.empty() && version[0] == '1'; |
| } catch (...) { |
| return false; |
| } |
| } |
| |
| return false; |
| } |
| |
| |
| |
| //static void CopyValue(const glTF::vec3& v, aiColor3D& out) |
| //{ |
| // out.r = v[0]; out.g = v[1]; out.b = v[2]; |
| //} |
| |
| static void CopyValue(const glTF::vec4& v, aiColor4D& out) |
| { |
| out.r = v[0]; out.g = v[1]; out.b = v[2]; out.a = v[3]; |
| } |
| |
| static void CopyValue(const glTF::vec4& v, aiColor3D& out) |
| { |
| out.r = v[0]; out.g = v[1]; out.b = v[2]; |
| } |
| |
| static void CopyValue(const glTF::vec3& v, aiVector3D& out) |
| { |
| out.x = v[0]; out.y = v[1]; out.z = v[2]; |
| } |
| |
| static void CopyValue(const glTF::vec4& v, aiQuaternion& out) |
| { |
| out.x = v[0]; out.y = v[1]; out.z = v[2]; out.w = v[3]; |
| } |
| |
| static void CopyValue(const glTF::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]; |
| } |
| |
| 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.diffuse, aimat, aiTextureType_DIFFUSE, AI_MATKEY_COLOR_DIFFUSE); |
| SetMaterialColorProperty(embeddedTexIdxs, r, mat.specular, aimat, aiTextureType_SPECULAR, AI_MATKEY_COLOR_SPECULAR); |
| SetMaterialColorProperty(embeddedTexIdxs, r, mat.ambient, aimat, aiTextureType_AMBIENT, AI_MATKEY_COLOR_AMBIENT); |
| |
| if (mat.shininess > 0.f) { |
| aimat->AddProperty(&mat.shininess, 1, AI_MATKEY_SHININESS); |
| } |
| } |
| |
| if (mScene->mNumMaterials == 0) { |
| mScene->mNumMaterials = 1; |
| 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; |
| } |
| |
| #ifdef ASSIMP_BUILD_DEBUG |
| 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; |
| } |
| #endif // ASSIMP_BUILD_DEBUG |
| |
| void glTFImporter::ImportMeshes(glTF::Asset& r) |
| { |
| std::vector<aiMesh*> meshes; |
| |
| unsigned int k = 0; |
| |
| 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) |
| { |
| for(Mesh::SExtension* cur_ext : mesh.Extension) |
| { |
| #ifdef ASSIMP_IMPORTER_GLTF_USE_OPEN3DGC |
| 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 |
| #endif |
| { |
| throw DeadlyImportError("GLTF: Can not import mesh: unknown mesh extension (code: \"" + to_string(cur_ext->Type) + |
| "\"), only Open3DGC is supported."); |
| } |
| } |
| }// 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) { |
| size_t& 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 |
| } |
| } |
| |
| |
| if (prim.indices) { |
| aiFace* faces = 0; |
| unsigned int nFaces = 0; |
| |
| 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; |
| 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; |
| 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; |
| } |
| |
| if (faces) { |
| aim->mFaces = faces; |
| aim->mNumFaces = nFaces; |
| ai_assert(CheckValidFacesIndices(faces, nFaces, aim->mNumVertices)); |
| } |
| } |
| |
| |
| 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; |
| aicam->mClipPlaneFar = cam.perspective.zfar; |
| aicam->mClipPlaneNear = cam.perspective.znear; |
| } |
| else { |
| // assimp does not support orthographic cameras |
| } |
| } |
| } |
| |
| 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->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::InternReadFile(const std::string& pFile, aiScene* pScene, IOSystem* pIOHandler) { |
| |
| 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); |
| |
| // TODO: it does not split the loaded vertices, should it? |
| //pScene->mFlags |= AI_SCENE_FLAGS_NON_VERBOSE_FORMAT; |
| MakeVerboseFormatProcess process; |
| process.Execute(pScene); |
| |
| |
| if (pScene->mNumMeshes == 0) { |
| pScene->mFlags |= AI_SCENE_FLAGS_INCOMPLETE; |
| } |
| } |
| |
| #endif // ASSIMP_BUILD_NO_GLTF_IMPORTER |
| |
