add assimp submodule

1 files changed, 833 insertions, 0 deletions

diff --git a/src/mesh/assimp-master/code/AssetLib/Assbin/AssbinFileWriter.cpp b/src/mesh/assimp-master/code/AssetLib/Assbin/AssbinFileWriter.cpp
new file mode 100644
index 0000000..1d16f17
--- /dev/null
+++ b/src/mesh/assimp-master/code/AssetLib/Assbin/AssbinFileWriter.cpp
@@ -0,0 +1,833 @@
+/*
+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  AssbinFileWriter.cpp
+ *  @brief Implementation of Assbin file writer.
+ */
+
+#include "AssbinFileWriter.h"
+#include "Common/assbin_chunks.h"
+#include "PostProcessing/ProcessHelper.h"
+
+#include <assimp/Exceptional.h>
+#include <assimp/version.h>
+#include <assimp/IOStream.hpp>
+
+#ifdef ASSIMP_BUILD_NO_OWN_ZLIB
+#include <zlib.h>
+#else
+#include "../contrib/zlib/zlib.h"
+#endif
+
+#include <ctime>
+
+#if _MSC_VER
+#pragma warning(push)
+#pragma warning(disable : 4706)
+#endif // _MSC_VER
+
+namespace Assimp {
+
+template <typename T>
+size_t Write(IOStream *stream, const T &v) {
+    return stream->Write(&v, sizeof(T), 1);
+}
+
+// -----------------------------------------------------------------------------------
+// Serialize an aiString
+template <>
+inline size_t Write<aiString>(IOStream *stream, const aiString &s) {
+    const size_t s2 = (uint32_t)s.length;
+    stream->Write(&s, 4, 1);
+    stream->Write(s.data, s2, 1);
+
+    return s2 + 4;
+}
+
+// -----------------------------------------------------------------------------------
+// Serialize an unsigned int as uint32_t
+template <>
+inline size_t Write<unsigned int>(IOStream *stream, const unsigned int &w) {
+    const uint32_t t = (uint32_t)w;
+    if (w > t) {
+        // this shouldn't happen, integers in Assimp data structures never exceed 2^32
+        throw DeadlyExportError("loss of data due to 64 -> 32 bit integer conversion");
+    }
+
+    stream->Write(&t, 4, 1);
+
+    return 4;
+}
+
+// -----------------------------------------------------------------------------------
+// Serialize an unsigned int as uint16_t
+template <>
+inline size_t Write<uint16_t>(IOStream *stream, const uint16_t &w) {
+    static_assert(sizeof(uint16_t) == 2, "sizeof(uint16_t)==2");
+    stream->Write(&w, 2, 1);
+
+    return 2;
+}
+
+// -----------------------------------------------------------------------------------
+// Serialize a float
+template <>
+inline size_t Write<float>(IOStream *stream, const float &f) {
+    static_assert(sizeof(float) == 4, "sizeof(float)==4");
+    stream->Write(&f, 4, 1);
+
+    return 4;
+}
+
+// -----------------------------------------------------------------------------------
+// Serialize a double
+template <>
+inline size_t Write<double>(IOStream *stream, const double &f) {
+    static_assert(sizeof(double) == 8, "sizeof(double)==8");
+    stream->Write(&f, 8, 1);
+
+    return 8;
+}
+
+// -----------------------------------------------------------------------------------
+// Serialize a vec3
+template <>
+inline size_t Write<aiVector3D>(IOStream *stream, const aiVector3D &v) {
+    size_t t = Write<float>(stream, v.x);
+    t += Write<float>(stream, v.y);
+    t += Write<float>(stream, v.z);
+
+    return t;
+}
+
+// -----------------------------------------------------------------------------------
+// Serialize a color value
+template <>
+inline size_t Write<aiColor3D>(IOStream *stream, const aiColor3D &v) {
+    size_t t = Write<float>(stream, v.r);
+    t += Write<float>(stream, v.g);
+    t += Write<float>(stream, v.b);
+
+    return t;
+}
+
+// -----------------------------------------------------------------------------------
+// Serialize a color value
+template <>
+inline size_t Write<aiColor4D>(IOStream *stream, const aiColor4D &v) {
+    size_t t = Write<float>(stream, v.r);
+    t += Write<float>(stream, v.g);
+    t += Write<float>(stream, v.b);
+    t += Write<float>(stream, v.a);
+
+    return t;
+}
+
+// -----------------------------------------------------------------------------------
+// Serialize a quaternion
+template <>
+inline size_t Write<aiQuaternion>(IOStream *stream, const aiQuaternion &v) {
+    size_t t = Write<float>(stream, v.w);
+    t += Write<float>(stream, v.x);
+    t += Write<float>(stream, v.y);
+    t += Write<float>(stream, v.z);
+    ai_assert(t == 16);
+
+    return t;
+}
+
+// -----------------------------------------------------------------------------------
+// Serialize a vertex weight
+template <>
+inline size_t Write<aiVertexWeight>(IOStream *stream, const aiVertexWeight &v) {
+    size_t t = Write<unsigned int>(stream, v.mVertexId);
+
+    return t + Write<float>(stream, v.mWeight);
+}
+
+constexpr size_t MatrixSize = 64;
+
+// -----------------------------------------------------------------------------------
+// Serialize a mat4x4
+template <>
+inline size_t Write<aiMatrix4x4>(IOStream *stream, const aiMatrix4x4 &m) {
+    for (unsigned int i = 0; i < 4; ++i) {
+        for (unsigned int i2 = 0; i2 < 4; ++i2) {
+            Write<float>(stream, m[i][i2]);
+        }
+    }
+
+    return MatrixSize;
+}
+
+// -----------------------------------------------------------------------------------
+// Serialize an aiVectorKey
+template <>
+inline size_t Write<aiVectorKey>(IOStream *stream, const aiVectorKey &v) {
+    const size_t t = Write<double>(stream, v.mTime);
+    return t + Write<aiVector3D>(stream, v.mValue);
+}
+
+// -----------------------------------------------------------------------------------
+// Serialize an aiQuatKey
+template <>
+inline size_t Write<aiQuatKey>(IOStream *stream, const aiQuatKey &v) {
+    const size_t t = Write<double>(stream, v.mTime);
+    return t + Write<aiQuaternion>(stream, v.mValue);
+}
+
+template <typename T>
+inline size_t WriteBounds(IOStream *stream, const T *in, unsigned int size) {
+    T minc, maxc;
+    ArrayBounds(in, size, minc, maxc);
+
+    const size_t t = Write<T>(stream, minc);
+    return t + Write<T>(stream, maxc);
+}
+
+// We use this to write out non-byte arrays so that we write using the specializations.
+// This way we avoid writing out extra bytes that potentially come from struct alignment.
+template <typename T>
+inline size_t WriteArray(IOStream *stream, const T *in, unsigned int size) {
+    size_t n = 0;
+    for (unsigned int i = 0; i < size; i++)
+        n += Write<T>(stream, in[i]);
+
+    return n;
+}
+
+// ----------------------------------------------------------------------------------
+/** @class  AssbinChunkWriter
+ *  @brief  Chunk writer mechanism for the .assbin file structure
+ *
+ *  This is a standard in-memory IOStream (most of the code is based on BlobIOStream),
+ *  the difference being that this takes another IOStream as a "container" in the
+ *  constructor, and when it is destroyed, it appends the magic number, the chunk size,
+ *  and the chunk contents to the container stream. This allows relatively easy chunk
+ *  chunk construction, even recursively.
+ */
+class AssbinChunkWriter : public IOStream {
+private:
+    uint8_t *buffer;
+    uint32_t magic;
+    IOStream *container;
+    size_t cur_size, cursor, initial;
+
+private:
+    // -------------------------------------------------------------------
+    void Grow(size_t need = 0) {
+        size_t new_size = std::max(initial, std::max(need, cur_size + (cur_size >> 1)));
+
+        const uint8_t *const old = buffer;
+        buffer = new uint8_t[new_size];
+
+        if (old) {
+            memcpy(buffer, old, cur_size);
+            delete[] old;
+        }
+
+        cur_size = new_size;
+    }
+
+public:
+    AssbinChunkWriter(IOStream *container, uint32_t magic, size_t initial = 4096) :
+            buffer(nullptr),
+            magic(magic),
+            container(container),
+            cur_size(0),
+            cursor(0),
+            initial(initial) {
+        // empty
+    }
+
+    ~AssbinChunkWriter() override {
+        if (container) {
+            container->Write(&magic, sizeof(uint32_t), 1);
+            container->Write(&cursor, sizeof(uint32_t), 1);
+            container->Write(buffer, 1, cursor);
+        }
+        if (buffer) delete[] buffer;
+    }
+
+    void *GetBufferPointer() { return buffer; }
+
+    size_t Read(void * /*pvBuffer*/, size_t /*pSize*/, size_t /*pCount*/) override {
+        return 0;
+    }
+    
+    aiReturn Seek(size_t /*pOffset*/, aiOrigin /*pOrigin*/) override {
+        return aiReturn_FAILURE;
+    }
+    
+    size_t Tell() const override {
+        return cursor;
+    }
+    
+    void Flush() override {
+        // not implemented
+    }
+
+    size_t FileSize() const override {
+        return cursor;
+    }
+
+    size_t Write(const void *pvBuffer, size_t pSize, size_t pCount) override {
+        pSize *= pCount;
+        if (cursor + pSize > cur_size) {
+            Grow(cursor + pSize);
+        }
+
+        memcpy(buffer + cursor, pvBuffer, pSize);
+        cursor += pSize;
+
+        return pCount;
+    }
+};
+
+// ----------------------------------------------------------------------------------
+/** @class  AssbinFileWriter
+ *  @brief  Assbin file writer class
+ *
+ *  This class writes an .assbin file, and is responsible for the file layout.
+ */
+class AssbinFileWriter {
+private:
+    bool shortened;
+    bool compressed;
+
+protected:
+    // -----------------------------------------------------------------------------------
+    void WriteBinaryNode(IOStream *container, const aiNode *node) {
+        AssbinChunkWriter chunk(container, ASSBIN_CHUNK_AINODE);
+
+        unsigned int nb_metadata = (node->mMetaData != nullptr ? node->mMetaData->mNumProperties : 0);
+
+        Write<aiString>(&chunk, node->mName);
+        Write<aiMatrix4x4>(&chunk, node->mTransformation);
+        Write<unsigned int>(&chunk, node->mNumChildren);
+        Write<unsigned int>(&chunk, node->mNumMeshes);
+        Write<unsigned int>(&chunk, nb_metadata);
+
+        for (unsigned int i = 0; i < node->mNumMeshes; ++i) {
+            Write<unsigned int>(&chunk, node->mMeshes[i]);
+        }
+
+        for (unsigned int i = 0; i < node->mNumChildren; ++i) {
+            WriteBinaryNode(&chunk, node->mChildren[i]);
+        }
+
+        for (unsigned int i = 0; i < nb_metadata; ++i) {
+            const aiString &key = node->mMetaData->mKeys[i];
+            aiMetadataType type = node->mMetaData->mValues[i].mType;
+            void *value = node->mMetaData->mValues[i].mData;
+
+            Write<aiString>(&chunk, key);
+            Write<uint16_t>(&chunk, (uint16_t)type);
+
+            switch (type) {
+            case AI_BOOL:
+                Write<bool>(&chunk, *((bool *)value));
+                break;
+            case AI_INT32:
+                Write<int32_t>(&chunk, *((int32_t *)value));
+                break;
+            case AI_UINT64:
+                Write<uint64_t>(&chunk, *((uint64_t *)value));
+                break;
+            case AI_FLOAT:
+                Write<float>(&chunk, *((float *)value));
+                break;
+            case AI_DOUBLE:
+                Write<double>(&chunk, *((double *)value));
+                break;
+            case AI_AISTRING:
+                Write<aiString>(&chunk, *((aiString *)value));
+                break;
+            case AI_AIVECTOR3D:
+                Write<aiVector3D>(&chunk, *((aiVector3D *)value));
+                break;
+#ifdef SWIG
+                case FORCE_32BIT:
+#endif // SWIG
+            default:
+                break;
+            }
+        }
+    }
+
+    // -----------------------------------------------------------------------------------
+    void WriteBinaryTexture(IOStream *container, const aiTexture *tex) {
+        AssbinChunkWriter chunk(container, ASSBIN_CHUNK_AITEXTURE);
+
+        Write<unsigned int>(&chunk, tex->mWidth);
+        Write<unsigned int>(&chunk, tex->mHeight);
+        // Write the texture format, but don't include the null terminator.
+        chunk.Write(tex->achFormatHint, sizeof(char), HINTMAXTEXTURELEN - 1);
+
+        if (!shortened) {
+            if (!tex->mHeight) {
+                chunk.Write(tex->pcData, 1, tex->mWidth);
+            } else {
+                chunk.Write(tex->pcData, 1, tex->mWidth * tex->mHeight * 4);
+            }
+        }
+    }
+
+    // -----------------------------------------------------------------------------------
+    void WriteBinaryBone(IOStream *container, const aiBone *b) {
+        AssbinChunkWriter chunk(container, ASSBIN_CHUNK_AIBONE);
+
+        Write<aiString>(&chunk, b->mName);
+        Write<unsigned int>(&chunk, b->mNumWeights);
+        Write<aiMatrix4x4>(&chunk, b->mOffsetMatrix);
+
+        // for the moment we write dumb min/max values for the bones, too.
+        // maybe I'll add a better, hash-like solution later
+        if (shortened) {
+            WriteBounds(&chunk, b->mWeights, b->mNumWeights);
+        } // else write as usual
+        else
+            WriteArray<aiVertexWeight>(&chunk, b->mWeights, b->mNumWeights);
+    }
+
+    // -----------------------------------------------------------------------------------
+    void WriteBinaryMesh(IOStream *container, const aiMesh *mesh) {
+        AssbinChunkWriter chunk(container, ASSBIN_CHUNK_AIMESH);
+
+        Write<unsigned int>(&chunk, mesh->mPrimitiveTypes);
+        Write<unsigned int>(&chunk, mesh->mNumVertices);
+        Write<unsigned int>(&chunk, mesh->mNumFaces);
+        Write<unsigned int>(&chunk, mesh->mNumBones);
+        Write<unsigned int>(&chunk, mesh->mMaterialIndex);
+
+        // first of all, write bits for all existent vertex components
+        unsigned int c = 0;
+        if (mesh->mVertices) {
+            c |= ASSBIN_MESH_HAS_POSITIONS;
+        }
+        if (mesh->mNormals) {
+            c |= ASSBIN_MESH_HAS_NORMALS;
+        }
+        if (mesh->mTangents && mesh->mBitangents) {
+            c |= ASSBIN_MESH_HAS_TANGENTS_AND_BITANGENTS;
+        }
+        for (unsigned int n = 0; n < AI_MAX_NUMBER_OF_TEXTURECOORDS; ++n) {
+            if (!mesh->mTextureCoords[n]) {
+                break;
+            }
+            c |= ASSBIN_MESH_HAS_TEXCOORD(n);
+        }
+        for (unsigned int n = 0; n < AI_MAX_NUMBER_OF_COLOR_SETS; ++n) {
+            if (!mesh->mColors[n]) {
+                break;
+            }
+            c |= ASSBIN_MESH_HAS_COLOR(n);
+        }
+        Write<unsigned int>(&chunk, c);
+
+        aiVector3D minVec, maxVec;
+        if (mesh->mVertices) {
+            if (shortened) {
+                WriteBounds(&chunk, mesh->mVertices, mesh->mNumVertices);
+            } // else write as usual
+            else
+                WriteArray<aiVector3D>(&chunk, mesh->mVertices, mesh->mNumVertices);
+        }
+        if (mesh->mNormals) {
+            if (shortened) {
+                WriteBounds(&chunk, mesh->mNormals, mesh->mNumVertices);
+            } // else write as usual
+            else
+                WriteArray<aiVector3D>(&chunk, mesh->mNormals, mesh->mNumVertices);
+        }
+        if (mesh->mTangents && mesh->mBitangents) {
+            if (shortened) {
+                WriteBounds(&chunk, mesh->mTangents, mesh->mNumVertices);
+                WriteBounds(&chunk, mesh->mBitangents, mesh->mNumVertices);
+            } // else write as usual
+            else {
+                WriteArray<aiVector3D>(&chunk, mesh->mTangents, mesh->mNumVertices);
+                WriteArray<aiVector3D>(&chunk, mesh->mBitangents, mesh->mNumVertices);
+            }
+        }
+        for (unsigned int n = 0; n < AI_MAX_NUMBER_OF_COLOR_SETS; ++n) {
+            if (!mesh->mColors[n])
+                break;
+
+            if (shortened) {
+                WriteBounds(&chunk, mesh->mColors[n], mesh->mNumVertices);
+            } // else write as usual
+            else
+                WriteArray<aiColor4D>(&chunk, mesh->mColors[n], mesh->mNumVertices);
+        }
+        for (unsigned int n = 0; n < AI_MAX_NUMBER_OF_TEXTURECOORDS; ++n) {
+            if (!mesh->mTextureCoords[n])
+                break;
+
+            // write number of UV components
+            Write<unsigned int>(&chunk, mesh->mNumUVComponents[n]);
+
+            if (shortened) {
+                WriteBounds(&chunk, mesh->mTextureCoords[n], mesh->mNumVertices);
+            } // else write as usual
+            else
+                WriteArray<aiVector3D>(&chunk, mesh->mTextureCoords[n], mesh->mNumVertices);
+        }
+
+        // write faces. There are no floating-point calculations involved
+        // in these, so we can write a simple hash over the face data
+        // to the dump file. We generate a single 32 Bit hash for 512 faces
+        // using Assimp's standard hashing function.
+        if (shortened) {
+            unsigned int processed = 0;
+            for (unsigned int job; (job = std::min(mesh->mNumFaces - processed, 512u)); processed += job) {
+                uint32_t hash = 0;
+                for (unsigned int a = 0; a < job; ++a) {
+
+                    const aiFace &f = mesh->mFaces[processed + a];
+                    uint32_t tmp = f.mNumIndices;
+                    hash = SuperFastHash(reinterpret_cast<const char *>(&tmp), sizeof tmp, hash);
+                    for (unsigned int i = 0; i < f.mNumIndices; ++i) {
+                        static_assert(AI_MAX_VERTICES <= 0xffffffff, "AI_MAX_VERTICES <= 0xffffffff");
+                        tmp = static_cast<uint32_t>(f.mIndices[i]);
+                        hash = SuperFastHash(reinterpret_cast<const char *>(&tmp), sizeof tmp, hash);
+                    }
+                }
+                Write<unsigned int>(&chunk, hash);
+            }
+        } else // else write as usual
+        {
+            // if there are less than 2^16 vertices, we can simply use 16 bit integers ...
+            for (unsigned int i = 0; i < mesh->mNumFaces; ++i) {
+                const aiFace &f = mesh->mFaces[i];
+
+                static_assert(AI_MAX_FACE_INDICES <= 0xffff, "AI_MAX_FACE_INDICES <= 0xffff");
+                Write<uint16_t>(&chunk, static_cast<uint16_t>(f.mNumIndices));
+
+                for (unsigned int a = 0; a < f.mNumIndices; ++a) {
+                    if (mesh->mNumVertices < (1u << 16)) {
+                        Write<uint16_t>(&chunk, static_cast<uint16_t>(f.mIndices[a]));
+                    } else {
+                        Write<unsigned int>(&chunk, f.mIndices[a]);
+                    }
+                }
+            }
+        }
+
+        // write bones
+        if (mesh->mNumBones) {
+            for (unsigned int a = 0; a < mesh->mNumBones; ++a) {
+                const aiBone *b = mesh->mBones[a];
+                WriteBinaryBone(&chunk, b);
+            }
+        }
+    }
+
+    // -----------------------------------------------------------------------------------
+    void WriteBinaryMaterialProperty(IOStream *container, const aiMaterialProperty *prop) {
+        AssbinChunkWriter chunk(container, ASSBIN_CHUNK_AIMATERIALPROPERTY);
+
+        Write<aiString>(&chunk, prop->mKey);
+        Write<unsigned int>(&chunk, prop->mSemantic);
+        Write<unsigned int>(&chunk, prop->mIndex);
+
+        Write<unsigned int>(&chunk, prop->mDataLength);
+        Write<unsigned int>(&chunk, (unsigned int)prop->mType);
+        chunk.Write(prop->mData, 1, prop->mDataLength);
+    }
+
+    // -----------------------------------------------------------------------------------
+    void WriteBinaryMaterial(IOStream *container, const aiMaterial *mat) {
+        AssbinChunkWriter chunk(container, ASSBIN_CHUNK_AIMATERIAL);
+
+        Write<unsigned int>(&chunk, mat->mNumProperties);
+        for (unsigned int i = 0; i < mat->mNumProperties; ++i) {
+            WriteBinaryMaterialProperty(&chunk, mat->mProperties[i]);
+        }
+    }
+
+    // -----------------------------------------------------------------------------------
+    void WriteBinaryNodeAnim(IOStream *container, const aiNodeAnim *nd) {
+        AssbinChunkWriter chunk(container, ASSBIN_CHUNK_AINODEANIM);
+
+        Write<aiString>(&chunk, nd->mNodeName);
+        Write<unsigned int>(&chunk, nd->mNumPositionKeys);
+        Write<unsigned int>(&chunk, nd->mNumRotationKeys);
+        Write<unsigned int>(&chunk, nd->mNumScalingKeys);
+        Write<unsigned int>(&chunk, nd->mPreState);
+        Write<unsigned int>(&chunk, nd->mPostState);
+
+        if (nd->mPositionKeys) {
+            if (shortened) {
+                WriteBounds(&chunk, nd->mPositionKeys, nd->mNumPositionKeys);
+
+            } // else write as usual
+            else
+                WriteArray<aiVectorKey>(&chunk, nd->mPositionKeys, nd->mNumPositionKeys);
+        }
+        if (nd->mRotationKeys) {
+            if (shortened) {
+                WriteBounds(&chunk, nd->mRotationKeys, nd->mNumRotationKeys);
+
+            } // else write as usual
+            else
+                WriteArray<aiQuatKey>(&chunk, nd->mRotationKeys, nd->mNumRotationKeys);
+        }
+        if (nd->mScalingKeys) {
+            if (shortened) {
+                WriteBounds(&chunk, nd->mScalingKeys, nd->mNumScalingKeys);
+
+            } // else write as usual
+            else
+                WriteArray<aiVectorKey>(&chunk, nd->mScalingKeys, nd->mNumScalingKeys);
+        }
+    }
+
+    // -----------------------------------------------------------------------------------
+    void WriteBinaryAnim(IOStream *container, const aiAnimation *anim) {
+        AssbinChunkWriter chunk(container, ASSBIN_CHUNK_AIANIMATION);
+
+        Write<aiString>(&chunk, anim->mName);
+        Write<double>(&chunk, anim->mDuration);
+        Write<double>(&chunk, anim->mTicksPerSecond);
+        Write<unsigned int>(&chunk, anim->mNumChannels);
+
+        for (unsigned int a = 0; a < anim->mNumChannels; ++a) {
+            const aiNodeAnim *nd = anim->mChannels[a];
+            WriteBinaryNodeAnim(&chunk, nd);
+        }
+    }
+
+    // -----------------------------------------------------------------------------------
+    void WriteBinaryLight(IOStream *container, const aiLight *l) {
+        AssbinChunkWriter chunk(container, ASSBIN_CHUNK_AILIGHT);
+
+        Write<aiString>(&chunk, l->mName);
+        Write<unsigned int>(&chunk, l->mType);
+
+        if (l->mType != aiLightSource_DIRECTIONAL) {
+            Write<float>(&chunk, l->mAttenuationConstant);
+            Write<float>(&chunk, l->mAttenuationLinear);
+            Write<float>(&chunk, l->mAttenuationQuadratic);
+        }
+
+        Write<aiColor3D>(&chunk, l->mColorDiffuse);
+        Write<aiColor3D>(&chunk, l->mColorSpecular);
+        Write<aiColor3D>(&chunk, l->mColorAmbient);
+
+        if (l->mType == aiLightSource_SPOT) {
+            Write<float>(&chunk, l->mAngleInnerCone);
+            Write<float>(&chunk, l->mAngleOuterCone);
+        }
+    }
+
+    // -----------------------------------------------------------------------------------
+    void WriteBinaryCamera(IOStream *container, const aiCamera *cam) {
+        AssbinChunkWriter chunk(container, ASSBIN_CHUNK_AICAMERA);
+
+        Write<aiString>(&chunk, cam->mName);
+        Write<aiVector3D>(&chunk, cam->mPosition);
+        Write<aiVector3D>(&chunk, cam->mLookAt);
+        Write<aiVector3D>(&chunk, cam->mUp);
+        Write<float>(&chunk, cam->mHorizontalFOV);
+        Write<float>(&chunk, cam->mClipPlaneNear);
+        Write<float>(&chunk, cam->mClipPlaneFar);
+        Write<float>(&chunk, cam->mAspect);
+    }
+
+    // -----------------------------------------------------------------------------------
+    void WriteBinaryScene(IOStream *container, const aiScene *scene) {
+        AssbinChunkWriter chunk(container, ASSBIN_CHUNK_AISCENE);
+
+        // basic scene information
+        Write<unsigned int>(&chunk, scene->mFlags);
+        Write<unsigned int>(&chunk, scene->mNumMeshes);
+        Write<unsigned int>(&chunk, scene->mNumMaterials);
+        Write<unsigned int>(&chunk, scene->mNumAnimations);
+        Write<unsigned int>(&chunk, scene->mNumTextures);
+        Write<unsigned int>(&chunk, scene->mNumLights);
+        Write<unsigned int>(&chunk, scene->mNumCameras);
+
+        // write node graph
+        WriteBinaryNode(&chunk, scene->mRootNode);
+
+        // write all meshes
+        for (unsigned int i = 0; i < scene->mNumMeshes; ++i) {
+            const aiMesh *mesh = scene->mMeshes[i];
+            WriteBinaryMesh(&chunk, mesh);
+        }
+
+        // write materials
+        for (unsigned int i = 0; i < scene->mNumMaterials; ++i) {
+            const aiMaterial *mat = scene->mMaterials[i];
+            WriteBinaryMaterial(&chunk, mat);
+        }
+
+        // write all animations
+        for (unsigned int i = 0; i < scene->mNumAnimations; ++i) {
+            const aiAnimation *anim = scene->mAnimations[i];
+            WriteBinaryAnim(&chunk, anim);
+        }
+
+        // write all textures
+        for (unsigned int i = 0; i < scene->mNumTextures; ++i) {
+            const aiTexture *mesh = scene->mTextures[i];
+            WriteBinaryTexture(&chunk, mesh);
+        }
+
+        // write lights
+        for (unsigned int i = 0; i < scene->mNumLights; ++i) {
+            const aiLight *l = scene->mLights[i];
+            WriteBinaryLight(&chunk, l);
+        }
+
+        // write cameras
+        for (unsigned int i = 0; i < scene->mNumCameras; ++i) {
+            const aiCamera *cam = scene->mCameras[i];
+            WriteBinaryCamera(&chunk, cam);
+        }
+    }
+
+public:
+    AssbinFileWriter(bool shortened, bool compressed) :
+            shortened(shortened), compressed(compressed) {
+    }
+
+    // -----------------------------------------------------------------------------------
+    // Write a binary model dump
+    void WriteBinaryDump(const char *pFile, const char *cmd, IOSystem *pIOSystem, const aiScene *pScene) {
+        IOStream *out = pIOSystem->Open(pFile, "wb");
+        if (!out)
+            throw std::runtime_error("Unable to open output file " + std::string(pFile) + '\n');
+
+        auto CloseIOStream = [&]() {
+            if (out) {
+                pIOSystem->Close(out);
+                out = nullptr; // Ensure this is only done once.
+            }
+        };
+
+        try {
+            time_t tt = time(nullptr);
+#if _WIN32
+            tm *p = gmtime(&tt);
+#else
+            struct tm now;
+            tm *p = gmtime_r(&tt, &now);
+#endif
+
+            // header
+            char s[64];
+            memset(s, 0, 64);
+#if _MSC_VER >= 1400
+            sprintf_s(s, "ASSIMP.binary-dump.%s", asctime(p));
+#else
+            ai_snprintf(s, 64, "ASSIMP.binary-dump.%s", asctime(p));
+#endif
+            out->Write(s, 44, 1);
+            // == 44 bytes
+
+            Write<unsigned int>(out, ASSBIN_VERSION_MAJOR);
+            Write<unsigned int>(out, ASSBIN_VERSION_MINOR);
+            Write<unsigned int>(out, aiGetVersionRevision());
+            Write<unsigned int>(out, aiGetCompileFlags());
+            Write<uint16_t>(out, shortened);
+            Write<uint16_t>(out, compressed);
+            // ==  20 bytes
+
+            char buff[256] = { 0 };
+            ai_snprintf(buff, 256, "%s", pFile);
+            out->Write(buff, sizeof(char), 256);
+
+            memset(buff, 0, sizeof(buff));
+            ai_snprintf(buff, 128, "%s", cmd);
+            out->Write(buff, sizeof(char), 128);
+
+            // leave 64 bytes free for future extensions
+            memset(buff, 0xcd, 64);
+            out->Write(buff, sizeof(char), 64);
+            // == 435 bytes
+
+            // ==== total header size: 512 bytes
+            ai_assert(out->Tell() == ASSBIN_HEADER_LENGTH);
+
+            // Up to here the data is uncompressed. For compressed files, the rest
+            // is compressed using standard DEFLATE from zlib.
+            if (compressed) {
+                AssbinChunkWriter uncompressedStream(nullptr, 0);
+                WriteBinaryScene(&uncompressedStream, pScene);
+
+                uLongf uncompressedSize = static_cast<uLongf>(uncompressedStream.Tell());
+                uLongf compressedSize = (uLongf)compressBound(uncompressedSize);
+                uint8_t *compressedBuffer = new uint8_t[compressedSize];
+
+                int res = compress2(compressedBuffer, &compressedSize, (const Bytef *)uncompressedStream.GetBufferPointer(), uncompressedSize, 9);
+                if (res != Z_OK) {
+                    delete[] compressedBuffer;
+                    throw DeadlyExportError("Compression failed.");
+                }
+
+                out->Write(&uncompressedSize, sizeof(uint32_t), 1);
+                out->Write(compressedBuffer, sizeof(char), compressedSize);
+
+                delete[] compressedBuffer;
+            } else {
+                WriteBinaryScene(out, pScene);
+            }
+
+            CloseIOStream();
+        } catch (...) {
+            CloseIOStream();
+            throw;
+        }
+    }
+};
+
+void DumpSceneToAssbin(
+        const char *pFile, const char *cmd, IOSystem *pIOSystem,
+        const aiScene *pScene, bool shortened, bool compressed) {
+    AssbinFileWriter fileWriter(shortened, compressed);
+    fileWriter.WriteBinaryDump(pFile, cmd, pIOSystem, pScene);
+}
+#if _MSC_VER
+#pragma warning(pop)
+#endif // _MSC_VER
+
+} // end of namespace Assimp