vrshoot

annotate libs/assimp/FindInstancesProcess.h @ 0:b2f14e535253

find changesets by author, revision, files, or words in the commit message
initial commit
author John Tsiombikas <nuclear@member.fsf.org>
date Sat, 01 Feb 2014 19:58:19 +0200
parents
children
rev   line source
nuclear@0 1 /*
nuclear@0 2 Open Asset Import Library (assimp)
nuclear@0 3 ----------------------------------------------------------------------
nuclear@0 4
nuclear@0 5 Copyright (c) 2006-2012, assimp team
nuclear@0 6 All rights reserved.
nuclear@0 7
nuclear@0 8 Redistribution and use of this software in source and binary forms,
nuclear@0 9 with or without modification, are permitted provided that the
nuclear@0 10 following conditions are met:
nuclear@0 11
nuclear@0 12 * Redistributions of source code must retain the above
nuclear@0 13 copyright notice, this list of conditions and the
nuclear@0 14 following disclaimer.
nuclear@0 15
nuclear@0 16 * Redistributions in binary form must reproduce the above
nuclear@0 17 copyright notice, this list of conditions and the
nuclear@0 18 following disclaimer in the documentation and/or other
nuclear@0 19 materials provided with the distribution.
nuclear@0 20
nuclear@0 21 * Neither the name of the assimp team, nor the names of its
nuclear@0 22 contributors may be used to endorse or promote products
nuclear@0 23 derived from this software without specific prior
nuclear@0 24 written permission of the assimp team.
nuclear@0 25
nuclear@0 26 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
nuclear@0 27 "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
nuclear@0 28 LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
nuclear@0 29 A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
nuclear@0 30 OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
nuclear@0 31 SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
nuclear@0 32 LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
nuclear@0 33 DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
nuclear@0 34 THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
nuclear@0 35 (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
nuclear@0 36 OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
nuclear@0 37
nuclear@0 38 ----------------------------------------------------------------------
nuclear@0 39 */
nuclear@0 40
nuclear@0 41 /** @file FindInstancesProcess.h
nuclear@0 42 * @brief Declares the aiProcess_FindInstances post-process step
nuclear@0 43 */
nuclear@0 44 #ifndef AI_FINDINSTANCES_H_INC
nuclear@0 45 #define AI_FINDINSTANCES_H_INC
nuclear@0 46
nuclear@0 47 #include "BaseProcess.h"
nuclear@0 48 #include "ProcessHelper.h"
nuclear@0 49
nuclear@0 50 class FindInstancesProcessTest;
nuclear@0 51 namespace Assimp {
nuclear@0 52
nuclear@0 53 // -------------------------------------------------------------------------------
nuclear@0 54 /** @brief Get a pseudo(!)-hash representing a mesh.
nuclear@0 55 *
nuclear@0 56 * The hash is built from number of vertices, faces, primitive types,
nuclear@0 57 * .... but *not* from the real mesh data. The funcction is not a perfect hash.
nuclear@0 58 * @param in Input mesh
nuclear@0 59 * @return Hash.
nuclear@0 60 */
nuclear@0 61 inline uint64_t GetMeshHash(aiMesh* in)
nuclear@0 62 {
nuclear@0 63 ai_assert(NULL != in);
nuclear@0 64
nuclear@0 65 // ... get an unique value representing the vertex format of the mesh
nuclear@0 66 const unsigned int fhash = GetMeshVFormatUnique(in);
nuclear@0 67
nuclear@0 68 // and bake it with number of vertices/faces/bones/matidx/ptypes
nuclear@0 69 return ((uint64_t)fhash << 32u) | ((
nuclear@0 70 (in->mNumBones << 16u) ^ (in->mNumVertices) ^
nuclear@0 71 (in->mNumFaces<<4u) ^ (in->mMaterialIndex<<15) ^
nuclear@0 72 (in->mPrimitiveTypes<<28)) & 0xffffffff );
nuclear@0 73 }
nuclear@0 74
nuclear@0 75 // -------------------------------------------------------------------------------
nuclear@0 76 /** @brief Perform a component-wise comparison of two arrays
nuclear@0 77 *
nuclear@0 78 * @param first First array
nuclear@0 79 * @param second Second aray
nuclear@0 80 * @param size Size of both arrays
nuclear@0 81 * @param e Epsilon
nuclear@0 82 * @return true if the arrays are identical
nuclear@0 83 */
nuclear@0 84 inline bool CompareArrays(const aiVector3D* first, const aiVector3D* second,
nuclear@0 85 unsigned int size, float e)
nuclear@0 86 {
nuclear@0 87 for (const aiVector3D* end = first+size; first != end; ++first,++second) {
nuclear@0 88 if ( (*first - *second).SquareLength() >= e)
nuclear@0 89 return false;
nuclear@0 90 }
nuclear@0 91 return true;
nuclear@0 92 }
nuclear@0 93
nuclear@0 94 // and the same for colors ...
nuclear@0 95 inline bool CompareArrays(const aiColor4D* first, const aiColor4D* second,
nuclear@0 96 unsigned int size, float e)
nuclear@0 97 {
nuclear@0 98 for (const aiColor4D* end = first+size; first != end; ++first,++second) {
nuclear@0 99 if ( GetColorDifference(*first,*second) >= e)
nuclear@0 100 return false;
nuclear@0 101 }
nuclear@0 102 return true;
nuclear@0 103 }
nuclear@0 104
nuclear@0 105 // ---------------------------------------------------------------------------
nuclear@0 106 /** @brief A post-processing steps to search for instanced meshes
nuclear@0 107 */
nuclear@0 108 class FindInstancesProcess : public BaseProcess
nuclear@0 109 {
nuclear@0 110 public:
nuclear@0 111
nuclear@0 112 FindInstancesProcess();
nuclear@0 113 ~FindInstancesProcess();
nuclear@0 114
nuclear@0 115 public:
nuclear@0 116 // -------------------------------------------------------------------
nuclear@0 117 // Check whether step is active in given flags combination
nuclear@0 118 bool IsActive( unsigned int pFlags) const;
nuclear@0 119
nuclear@0 120 // -------------------------------------------------------------------
nuclear@0 121 // Execute step on a given scene
nuclear@0 122 void Execute( aiScene* pScene);
nuclear@0 123
nuclear@0 124 // -------------------------------------------------------------------
nuclear@0 125 // Setup properties prior to executing the process
nuclear@0 126 void SetupProperties(const Importer* pImp);
nuclear@0 127
nuclear@0 128 private:
nuclear@0 129
nuclear@0 130 bool configSpeedFlag;
nuclear@0 131
nuclear@0 132 }; // ! end class FindInstancesProcess
nuclear@0 133 } // ! end namespace Assimp
nuclear@0 134
nuclear@0 135 #endif // !! AI_FINDINSTANCES_H_INC