WIP of assimp integration.

Engine/lib/assimp/code/XFileParser.h

@@ -0,0 +1,157 @@
+/*
+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 Helper class to parse a XFile into a temporary structure */
+#ifndef AI_XFILEPARSER_H_INC
+#define AI_XFILEPARSER_H_INC
+
+#include <string>
+#include <vector>
+
+#include <assimp/types.h>
+
+namespace Assimp {
+    namespace XFile {
+        struct Node;
+        struct Mesh;
+        struct Scene;
+        struct Material;
+        struct Animation;
+        struct AnimBone;
+    }
+
+/**
+  *     @brief  The XFileParser reads a XFile either in text or binary form and builds a temporary
+  *             data structure out of it.
+  */
+class XFileParser {
+public:
+    /// Constructor. Creates a data structure out of the XFile given in the memory block.
+    /// @param pBuffer Null-terminated memory buffer containing the XFile
+    explicit XFileParser( const std::vector<char>& pBuffer);
+
+    /// Destructor. Destroys all imported data along with it
+    ~XFileParser();
+
+    /// Returns the temporary representation of the imported data.
+    XFile::Scene* GetImportedData() const { return mScene; }
+
+protected:
+    void ParseFile();
+    void ParseDataObjectTemplate();
+    void ParseDataObjectFrame( XFile::Node *pParent);
+    void ParseDataObjectTransformationMatrix( aiMatrix4x4& pMatrix);
+    void ParseDataObjectMesh( XFile::Mesh* pMesh);
+    void ParseDataObjectSkinWeights( XFile::Mesh* pMesh);
+    void ParseDataObjectSkinMeshHeader( XFile::Mesh* pMesh);
+    void ParseDataObjectMeshNormals( XFile::Mesh* pMesh);
+    void ParseDataObjectMeshTextureCoords( XFile::Mesh* pMesh);
+    void ParseDataObjectMeshVertexColors( XFile::Mesh* pMesh);
+    void ParseDataObjectMeshMaterialList( XFile::Mesh* pMesh);
+    void ParseDataObjectMaterial( XFile::Material* pMaterial);
+    void ParseDataObjectAnimTicksPerSecond();
+    void ParseDataObjectAnimationSet();
+    void ParseDataObjectAnimation( XFile::Animation* pAnim);
+    void ParseDataObjectAnimationKey( XFile::AnimBone *pAnimBone);
+    void ParseDataObjectTextureFilename( std::string& pName);
+    void ParseUnknownDataObject();
+
+    //! places pointer to next begin of a token, and ignores comments
+    void FindNextNoneWhiteSpace();
+
+    //! returns next valid token. Returns empty string if no token there
+    std::string GetNextToken();
+
+    //! reads header of data object including the opening brace.
+    //! returns false if error happened, and writes name of object
+    //! if there is one
+    void readHeadOfDataObject( std::string* poName = NULL);
+
+    //! checks for closing curly brace, throws exception if not there
+    void CheckForClosingBrace();
+
+    //! checks for one following semicolon, throws exception if not there
+    void CheckForSemicolon();
+
+    //! checks for a separator char, either a ',' or a ';'
+    void CheckForSeparator();
+
+    /// tests and possibly consumes a separator char, but does nothing if there was no separator
+    void TestForSeparator();
+
+    //! reads a x file style string
+    void GetNextTokenAsString( std::string& poString);
+
+    void ReadUntilEndOfLine();
+
+    unsigned short ReadBinWord();
+    unsigned int ReadBinDWord();
+    unsigned int ReadInt();
+    ai_real ReadFloat();
+    aiVector2D ReadVector2();
+    aiVector3D ReadVector3();
+    aiColor3D ReadRGB();
+    aiColor4D ReadRGBA();
+
+    /** Throws an exception with a line number and the given text. */
+    AI_WONT_RETURN void ThrowException( const std::string& pText) AI_WONT_RETURN_SUFFIX;
+
+    /**
+      * @brief  Filters the imported hierarchy for some degenerated cases that some exporters produce.
+      * @param pData The sub-hierarchy to filter
+      */
+    void FilterHierarchy( XFile::Node* pNode);
+
+protected:
+    unsigned int mMajorVersion, mMinorVersion; ///< version numbers
+    bool mIsBinaryFormat; ///< true if the file is in binary, false if it's in text form
+    unsigned int mBinaryFloatSize; ///< float size in bytes, either 4 or 8
+    unsigned int mBinaryNumCount; /// < counter for number arrays in binary format
+    const char* mP;
+    const char* mEnd;
+    unsigned int mLineNumber; ///< Line number when reading in text format
+    XFile::Scene* mScene; ///< Imported data
+};
+
+} //! ns Assimp
+
+#endif // AI_XFILEPARSER_H_INC