1 /* 2 Open Asset Import Library (assimp) 3 ---------------------------------------------------------------------- 4 5 Copyright (c) 2006-2012, assimp team 6 All rights reserved. 7 8 Redistribution and use of this software in source and binary forms, 9 with or without modification, are permitted provided that the 10 following conditions are met: 11 12 * Redistributions of source code must retain the above 13 copyright notice, this list of conditions and the 14 following disclaimer. 15 16 * Redistributions in binary form must reproduce the above 17 copyright notice, this list of conditions and the 18 following disclaimer in the documentation and/or other 19 materials provided with the distribution. 20 21 * Neither the name of the assimp team, nor the names of its 22 contributors may be used to endorse or promote products 23 derived from this software without specific prior 24 written permission of the assimp team. 25 26 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 27 "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 28 LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 29 A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 30 OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 31 SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 32 LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 33 DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 34 THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 35 (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 36 OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 37 38 ---------------------------------------------------------------------- 39 */ 40 41 42 /** @file Defines a post processing step to calculate tangents and 43 bitangents on all imported meshes.*/ 44 #ifndef AI_CALCTANGENTSPROCESS_H_INC 45 #define AI_CALCTANGENTSPROCESS_H_INC 46 47 #include "BaseProcess.h" 48 49 struct aiMesh; 50 51 namespace Assimp 52 { 53 54 // --------------------------------------------------------------------------- 55 /** The CalcTangentsProcess calculates the tangent and bitangent for any vertex 56 * of all meshes. It is expected to be run before the JoinVerticesProcess runs 57 * because the joining of vertices also considers tangents and bitangents for 58 * uniqueness. 59 */ 60 class ASSIMP_API_WINONLY CalcTangentsProcess : public BaseProcess 61 { 62 public: 63 64 CalcTangentsProcess(); 65 ~CalcTangentsProcess(); 66 67 public: 68 // ------------------------------------------------------------------- 69 /** Returns whether the processing step is present in the given flag. 70 * @param pFlags The processing flags the importer was called with. 71 * A bitwise combination of #aiPostProcessSteps. 72 * @return true if the process is present in this flag fields, 73 * false if not. 74 */ 75 bool IsActive( unsigned int pFlags) const; 76 77 // ------------------------------------------------------------------- 78 /** Called prior to ExecuteOnScene(). 79 * The function is a request to the process to update its configuration 80 * basing on the Importer's configuration property list. 81 */ 82 void SetupProperties(const Importer* pImp); 83 84 85 // setter for configMaxAngle SetMaxSmoothAngle(float f)86 inline void SetMaxSmoothAngle(float f) 87 { 88 configMaxAngle =f; 89 } 90 91 protected: 92 93 // ------------------------------------------------------------------- 94 /** Calculates tangents and bitangents for a specific mesh. 95 * @param pMesh The mesh to process. 96 * @param meshIndex Index of the mesh 97 */ 98 bool ProcessMesh( aiMesh* pMesh, unsigned int meshIndex); 99 100 // ------------------------------------------------------------------- 101 /** Executes the post processing step on the given imported data. 102 * @param pScene The imported data to work at. 103 */ 104 void Execute( aiScene* pScene); 105 106 private: 107 108 /** Configuration option: maximum smoothing angle, in radians*/ 109 float configMaxAngle; 110 unsigned int configSourceUV; 111 }; 112 113 } // end of namespace Assimp 114 115 #endif // AI_CALCTANGENTSPROCESS_H_INC 116