/* Open Asset Import Library (assimp) ---------------------------------------------------------------------- Copyright (c) 2006-2020, 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 #include #include #ifdef _WIN32 # pragma warning(push) # pragma warning( disable : 4706) #endif // _WIN32 namespace glTF { using rapidjson::StringBuffer; using rapidjson::PrettyWriter; using rapidjson::Writer; using rapidjson::StringRef; using rapidjson::StringRef; namespace { template 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 inline Value& MakeValue(Value& val, const std::vector & r, MemoryPoolAllocator<>& al) { val.SetArray(); val.Reserve(static_cast(r.size()), al); for (unsigned int i = 0; i < r.size(); ++i) { val.PushBack(r[i], al); } return val; } template inline Value& MakeValueCast(Value& val, const std::vector & r, MemoryPoolAllocator<>& al) { val.SetArray(); val.Reserve(static_cast(r.size()), al); for (unsigned int i = 0; i < r.size(); ++i) { val.PushBack(static_cast(r[i]), al); } return val; } template inline void AddRefsVector(Value& obj, const char* fieldId, std::vector< Ref >& 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(vTmpMax, a.max, w.mAl), w.mAl); obj.AddMember("min", MakeValueCast(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(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(bv.byteOffset), w.mAl); obj.AddMember("byteLength", static_cast(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,"; glTFCommon::Util::EncodeBase64(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(); for(Mesh::SExtension* ptr_ext : m.Extension) { switch(ptr_ext->Type) { #ifdef ASSIMP_IMPORTER_GLTF_USE_OPEN3DGC 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(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(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(ptr_ext_comp->IndicesCount), w.mAl); json_comp_data.AddMember("verticesCount", static_cast(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; #endif 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) // 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 jsonOutFile(mAsset.OpenFile(path, "wt", true)); if (jsonOutFile == 0) { throw DeadlyExportError("Could not open output file: " + std::string(path)); } StringBuffer docBuffer; PrettyWriter writer(docBuffer); mDoc.Accept(writer); 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 b = mAsset.buffers.Get(i); std::string binPath = b->GetURI(); std::unique_ptr 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 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 writer(docBuffer); mDoc.Accept(writer); 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 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 void AssetWriter::WriteObjects(LazyDict& 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 void WriteLazyDict(LazyDict& d, AssetWriter& w) { w.WriteObjects(d); } #ifdef _WIN32 # pragma warning(pop) #endif // _WIN32 }