WIP of assimp integration.

Engine/lib/assimp/code/BlenderLoader.h

@@ -0,0 +1,240 @@
+/*
+Open Asset Import Library (assimp)
+----------------------------------------------------------------------
+
+Copyright (c) 2006-2018, 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  BlenderLoader.h
+ *  @brief Declaration of the Blender 3D (*.blend) importer class.
+ */
+#ifndef INCLUDED_AI_BLEND_LOADER_H
+#define INCLUDED_AI_BLEND_LOADER_H
+
+#include <assimp/BaseImporter.h>
+#include <assimp/LogAux.h>
+#include <memory>
+
+struct aiNode;
+struct aiMesh;
+struct aiLight;
+struct aiCamera;
+struct aiMaterial;
+
+namespace Assimp    {
+
+    // TinyFormatter.h
+    namespace Formatter {
+        template <typename T,typename TR, typename A> class basic_formatter;
+        typedef class basic_formatter< char, std::char_traits<char>, std::allocator<char> > format;
+    }
+
+    // BlenderDNA.h
+    namespace Blender {
+        class  FileDatabase;
+        struct ElemBase;
+    }
+
+    // BlenderScene.h
+    namespace Blender {
+        struct Scene;
+        struct Object;
+        struct Mesh;
+        struct Camera;
+        struct Lamp;
+        struct MTex;
+        struct Image;
+        struct Material;
+    }
+
+    // BlenderIntermediate.h
+    namespace Blender {
+        struct ConversionData;
+        template <template <typename,typename> class TCLASS, typename T> struct TempArray;
+    }
+
+    // BlenderModifier.h
+    namespace Blender {
+        class BlenderModifierShowcase;
+        class BlenderModifier;
+    }
+
+
+
+// -------------------------------------------------------------------------------------------
+/** Load blenders official binary format. The actual file structure (the `DNA` how they
+ *  call it is outsourced to BlenderDNA.cpp/BlenderDNA.h. This class only performs the
+ *  conversion from intermediate format to aiScene. */
+// -------------------------------------------------------------------------------------------
+class BlenderImporter : public BaseImporter, public LogFunctions<BlenderImporter>
+{
+public:
+    BlenderImporter();
+    ~BlenderImporter();
+
+public:
+
+    // --------------------
+    bool CanRead( const std::string& pFile,
+        IOSystem* pIOHandler,
+        bool checkSig
+    ) const;
+
+protected:
+
+    // --------------------
+    const aiImporterDesc* GetInfo () const;
+
+    // --------------------
+    void GetExtensionList(std::set<std::string>& app);
+
+    // --------------------
+    void SetupProperties(const Importer* pImp);
+
+    // --------------------
+    void InternReadFile( const std::string& pFile,
+        aiScene* pScene,
+        IOSystem* pIOHandler
+    );
+
+    // --------------------
+    void ParseBlendFile(Blender::FileDatabase& out,
+        std::shared_ptr<IOStream> stream
+    );
+
+    // --------------------
+    void ExtractScene(Blender::Scene& out,
+        const Blender::FileDatabase& file
+    );
+
+    // --------------------
+    void ConvertBlendFile(aiScene* out,
+        const Blender::Scene& in,
+        const Blender::FileDatabase& file
+    );
+
+private:
+
+    // --------------------
+    aiNode* ConvertNode(const Blender::Scene& in,
+        const Blender::Object* obj,
+        Blender::ConversionData& conv_info,
+        const aiMatrix4x4& parentTransform
+    );
+
+    // --------------------
+    void ConvertMesh(const Blender::Scene& in,
+        const Blender::Object* obj,
+        const Blender::Mesh* mesh,
+        Blender::ConversionData& conv_data,
+        Blender::TempArray<std::vector,aiMesh>& temp
+    );
+
+    // --------------------
+    aiLight* ConvertLight(const Blender::Scene& in,
+        const Blender::Object* obj,
+        const Blender::Lamp* mesh,
+        Blender::ConversionData& conv_data
+    );
+
+    // --------------------
+    aiCamera* ConvertCamera(const Blender::Scene& in,
+        const Blender::Object* obj,
+        const Blender::Camera* mesh,
+        Blender::ConversionData& conv_data
+    );
+
+    // --------------------
+    void BuildDefaultMaterial(
+        Blender::ConversionData& conv_data
+    );
+
+    void AddBlendParams(
+        aiMaterial* result,
+        const Blender::Material* source
+    );
+
+    void BuildMaterials(
+        Blender::ConversionData& conv_data
+    );
+
+    // --------------------
+    void ResolveTexture(
+        aiMaterial* out,
+        const Blender::Material* mat,
+        const Blender::MTex* tex,
+        Blender::ConversionData& conv_data
+    );
+
+    // --------------------
+    void ResolveImage(
+        aiMaterial* out,
+        const Blender::Material* mat,
+        const Blender::MTex* tex,
+        const Blender::Image* img,
+        Blender::ConversionData& conv_data
+    );
+
+    void AddSentinelTexture(
+        aiMaterial* out,
+        const Blender::Material* mat,
+        const Blender::MTex* tex,
+        Blender::ConversionData& conv_data
+    );
+
+private: // static stuff, mostly logging and error reporting.
+
+    // --------------------
+    static void CheckActualType(const Blender::ElemBase* dt,
+        const char* check
+    );
+
+    // --------------------
+    static void NotSupportedObjectType(const Blender::Object* obj,
+        const char* type
+    );
+
+
+private:
+
+    Blender::BlenderModifierShowcase* modifier_cache;
+
+}; // !class BlenderImporter
+
+} // end of namespace Assimp
+#endif // AI_UNREALIMPORTER_H_INC