new stuff

assimp/code/AssetLib/Obj/ObjFileImporter.h

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+/*
+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.
+
+----------------------------------------------------------------------
+*/
+#pragma once
+#ifndef OBJ_FILE_IMPORTER_H_INC
+#define OBJ_FILE_IMPORTER_H_INC
+
+#include <assimp/BaseImporter.h>
+#include <assimp/material.h>
+#include <memory>
+#include <vector>
+
+struct aiMesh;
+struct aiNode;
+
+namespace Assimp {
+
+namespace ObjFile {
+struct Object;
+struct Model;
+} // namespace ObjFile
+
+// ------------------------------------------------------------------------------------------------
+/// \class  ObjFileImporter
+/// \brief  Imports a waveform obj file
+// ------------------------------------------------------------------------------------------------
+class ObjFileImporter final : public BaseImporter {
+public:
+    /// \brief  Default constructor
+    ObjFileImporter();
+
+    /// \brief  Destructor
+    ~ObjFileImporter() override;
+
+    /// \brief  Returns whether the class can handle the format of the given file.
+    /// \remark See BaseImporter::CanRead() for details.
+    bool CanRead(const std::string &pFile, IOSystem *pIOHandler, bool checkSig) const override;
+
+protected:
+    //! \brief  Appends the supported extension.
+    const aiImporterDesc *GetInfo() const override;
+
+    //! \brief  File import implementation.
+    void InternReadFile(const std::string &pFile, aiScene *pScene, IOSystem *pIOHandler) override;
+
+    //! \brief  Create the data from imported content.
+    void CreateDataFromImport(const ObjFile::Model *pModel, aiScene *pScene);
+
+    //! \brief  Creates all nodes stored in imported content.
+    aiNode *createNodes(const ObjFile::Model *pModel, const ObjFile::Object *pData,
+            aiNode *pParent, aiScene *pScene, std::vector<std::unique_ptr<aiMesh>> &MeshArray);
+
+    //! \brief  Creates topology data like faces and meshes for the geometry.
+    std::unique_ptr<aiMesh> createTopology(const ObjFile::Model *pModel, const ObjFile::Object *pData,
+            unsigned int uiMeshIndex);
+
+    //! \brief  Creates vertices from model.
+    void createVertexArray(const ObjFile::Model *pModel, const ObjFile::Object *pCurrentObject,
+            unsigned int uiMeshIndex, aiMesh *pMesh, unsigned int numIndices);
+
+    //! \brief  Object counter helper method.
+    void countObjects(const std::vector<ObjFile::Object *> &rObjects, int &iNumMeshes);
+
+    //! \brief  Material creation.
+    void createMaterials(const ObjFile::Model *pModel, aiScene *pScene);
+
+    /// @brief  Adds special property for the used texture mapping mode of the model.
+    void addTextureMappingModeProperty(aiMaterial *mat, aiTextureType type, int clampMode = 1, int index = 0);
+
+    //! \brief  Appends a child node to a parent node and updates the data structures.
+    void appendChildToParentNode(aiNode *pParent, aiNode *pChild);
+
+private:
+    //! Data buffer
+    std::vector<char> m_Buffer;
+    //! Pointer to root object instance
+    ObjFile::Object *m_pRootObject;
+    //! Absolute pathname of model in file system
+    std::string m_strAbsPath;
+};
+
+// ------------------------------------------------------------------------------------------------
+
+} // Namespace Assimp
+
+#endif