diff options
Diffstat (limited to 'src/3rdparty/assimp/code/FindInstancesProcess.cpp')
| -rw-r--r-- | src/3rdparty/assimp/code/FindInstancesProcess.cpp | 396 |
1 files changed, 198 insertions, 198 deletions
diff --git a/src/3rdparty/assimp/code/FindInstancesProcess.cpp b/src/3rdparty/assimp/code/FindInstancesProcess.cpp index c857bb21d..479f6561e 100644 --- a/src/3rdparty/assimp/code/FindInstancesProcess.cpp +++ b/src/3rdparty/assimp/code/FindInstancesProcess.cpp @@ -3,12 +3,12 @@ Open Asset Import Library (assimp) --------------------------------------------------------------------------- -Copyright (c) 2006-2012, assimp team +Copyright (c) 2006-2016, 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 +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 @@ -25,16 +25,16 @@ conditions are met: 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 +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 +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 +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 +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. --------------------------------------------------------------------------- */ @@ -43,15 +43,17 @@ OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. * @brief Implementation of the aiProcess_FindInstances postprocessing step */ -#include "AssimpPCH.h" + #include "FindInstancesProcess.h" +#include <memory> +#include <stdio.h> using namespace Assimp; // ------------------------------------------------------------------------------------------------ // Constructor to be privately used by Importer FindInstancesProcess::FindInstancesProcess() -: configSpeedFlag (false) +: configSpeedFlag (false) {} // ------------------------------------------------------------------------------------------------ @@ -63,215 +65,213 @@ FindInstancesProcess::~FindInstancesProcess() // Returns whether the processing step is present in the given flag field. bool FindInstancesProcess::IsActive( unsigned int pFlags) const { - // FindInstances makes absolutely no sense together with PreTransformVertices - // fixme: spawn error message somewhere else? - return 0 != (pFlags & aiProcess_FindInstances) && 0 == (pFlags & aiProcess_PreTransformVertices); + // FindInstances makes absolutely no sense together with PreTransformVertices + // fixme: spawn error message somewhere else? + return 0 != (pFlags & aiProcess_FindInstances) && 0 == (pFlags & aiProcess_PreTransformVertices); } // ------------------------------------------------------------------------------------------------ // Setup properties for the step void FindInstancesProcess::SetupProperties(const Importer* pImp) { - // AI_CONFIG_FAVOUR_SPEED - configSpeedFlag = (0 != pImp->GetPropertyInteger(AI_CONFIG_FAVOUR_SPEED,0)); + // AI_CONFIG_FAVOUR_SPEED + configSpeedFlag = (0 != pImp->GetPropertyInteger(AI_CONFIG_FAVOUR_SPEED,0)); } // ------------------------------------------------------------------------------------------------ // Compare the bones of two meshes bool CompareBones(const aiMesh* orig, const aiMesh* inst) { - for (unsigned int i = 0; i < orig->mNumBones;++i) { - aiBone* aha = orig->mBones[i]; - aiBone* oha = inst->mBones[i]; - - if (aha->mNumWeights != oha->mNumWeights || - aha->mOffsetMatrix != oha->mOffsetMatrix || - aha->mNumWeights != oha->mNumWeights) { - return false; - } - - // compare weight per weight --- - for (unsigned int n = 0; n < aha->mNumWeights;++n) { - if (aha->mWeights[n].mVertexId != oha->mWeights[n].mVertexId || - (aha->mWeights[n].mWeight - oha->mWeights[n].mWeight) < 10e-3f) { - return false; - } - } - } - return true; + for (unsigned int i = 0; i < orig->mNumBones;++i) { + aiBone* aha = orig->mBones[i]; + aiBone* oha = inst->mBones[i]; + + if (aha->mNumWeights != oha->mNumWeights || + aha->mOffsetMatrix != oha->mOffsetMatrix) { + return false; + } + + // compare weight per weight --- + for (unsigned int n = 0; n < aha->mNumWeights;++n) { + if (aha->mWeights[n].mVertexId != oha->mWeights[n].mVertexId || + (aha->mWeights[n].mWeight - oha->mWeights[n].mWeight) < 10e-3f) { + return false; + } + } + } + return true; } // ------------------------------------------------------------------------------------------------ // Update mesh indices in the node graph void UpdateMeshIndices(aiNode* node, unsigned int* lookup) { - for (unsigned int n = 0; n < node->mNumMeshes;++n) - node->mMeshes[n] = lookup[node->mMeshes[n]]; + for (unsigned int n = 0; n < node->mNumMeshes;++n) + node->mMeshes[n] = lookup[node->mMeshes[n]]; - for (unsigned int n = 0; n < node->mNumChildren;++n) - UpdateMeshIndices(node->mChildren[n],lookup); + for (unsigned int n = 0; n < node->mNumChildren;++n) + UpdateMeshIndices(node->mChildren[n],lookup); } // ------------------------------------------------------------------------------------------------ // Executes the post processing step on the given imported data. void FindInstancesProcess::Execute( aiScene* pScene) { - DefaultLogger::get()->debug("FindInstancesProcess begin"); - if (pScene->mNumMeshes) { - - // use a pseudo hash for all meshes in the scene to quickly find - // the ones which are possibly equal. This step is executed early - // in the pipeline, so we could, depending on the file format, - // have several thousand small meshes. That's too much for a brute - // everyone-against-everyone check involving up to 10 comparisons - // each. - boost::scoped_array<uint64_t> hashes (new uint64_t[pScene->mNumMeshes]); - boost::scoped_array<unsigned int> remapping (new unsigned int[pScene->mNumMeshes]); - - unsigned int numMeshesOut = 0; - for (unsigned int i = 0; i < pScene->mNumMeshes; ++i) { - - aiMesh* inst = pScene->mMeshes[i]; - hashes[i] = GetMeshHash(inst); - - for (int a = i-1; a >= 0; --a) { - if (hashes[i] == hashes[a]) - { - aiMesh* orig = pScene->mMeshes[a]; - if (!orig) - continue; - - // check for hash collision .. we needn't check - // the vertex format, it *must* match due to the - // (brilliant) construction of the hash - if (orig->mNumBones != inst->mNumBones || - orig->mNumFaces != inst->mNumFaces || - orig->mNumVertices != inst->mNumVertices || - orig->mMaterialIndex != inst->mMaterialIndex || - orig->mPrimitiveTypes != inst->mPrimitiveTypes) - continue; - - // up to now the meshes are equal. find an appropriate - // epsilon to compare position differences against - float epsilon = ComputePositionEpsilon(inst); - epsilon *= epsilon; - - // now compare vertex positions, normals, - // tangents and bitangents using this epsilon. - if (orig->HasPositions()) { - if(!CompareArrays(orig->mVertices,inst->mVertices,orig->mNumVertices,epsilon)) - continue; - } - if (orig->HasNormals()) { - if(!CompareArrays(orig->mNormals,inst->mNormals,orig->mNumVertices,epsilon)) - continue; - } - if (orig->HasTangentsAndBitangents()) { - if (!CompareArrays(orig->mTangents,inst->mTangents,orig->mNumVertices,epsilon) || - !CompareArrays(orig->mBitangents,inst->mBitangents,orig->mNumVertices,epsilon)) - continue; - } - - // use a constant epsilon for colors and UV coordinates - static const float uvEpsilon = 10e-4f; - - { - unsigned int i, end = orig->GetNumUVChannels(); - for(i = 0; i < end; ++i) { - if (!orig->mTextureCoords[i]) { - continue; - } - if(!CompareArrays(orig->mTextureCoords[i],inst->mTextureCoords[i],orig->mNumVertices,uvEpsilon)) { - break; - } - } - if (i != end) { - continue; - } - } - { - unsigned int i, end = orig->GetNumColorChannels(); - for(i = 0; i < end; ++i) { - if (!orig->mColors[i]) { - continue; - } - if(!CompareArrays(orig->mColors[i],inst->mColors[i],orig->mNumVertices,uvEpsilon)) { - break; - } - } - if (i != end) { - continue; - } - } - - // These two checks are actually quite expensive and almost *never* required. - // Almost. That's why they're still here. But there's no reason to do them - // in speed-targeted imports. - if (!configSpeedFlag) { - - // It seems to be strange, but we really need to check whether the - // bones are identical too. Although it's extremely unprobable - // that they're not if control reaches here, we need to deal - // with unprobable cases, too. It could still be that there are - // equal shapes which are deformed differently. - if (!CompareBones(orig,inst)) - continue; - - // For completeness ... compare even the index buffers for equality - // face order & winding order doesn't care. Input data is in verbose format. - boost::scoped_array<unsigned int> ftbl_orig(new unsigned int[orig->mNumVertices]); - boost::scoped_array<unsigned int> ftbl_inst(new unsigned int[orig->mNumVertices]); - - for (unsigned int tt = 0; tt < orig->mNumFaces;++tt) { - aiFace& f = orig->mFaces[tt]; - for (unsigned int nn = 0; nn < f.mNumIndices;++nn) - ftbl_orig[f.mIndices[nn]] = tt; - - aiFace& f2 = inst->mFaces[tt]; - for (unsigned int nn = 0; nn < f2.mNumIndices;++nn) - ftbl_inst[f2.mIndices[nn]] = tt; - } - if (0 != ::memcmp(ftbl_inst.get(),ftbl_orig.get(),orig->mNumVertices*sizeof(unsigned int))) - continue; - } - - // We're still here. Or in other words: 'inst' is an instance of 'orig'. - // Place a marker in our list that we can easily update mesh indices. - remapping[i] = remapping[a]; - - // Delete the instanced mesh, we don't need it anymore - delete inst; - pScene->mMeshes[i] = NULL; - break; - } - } - - // If we didn't find a match for the current mesh: keep it - if (pScene->mMeshes[i]) { - remapping[i] = numMeshesOut++; - } - } - ai_assert(0 != numMeshesOut); - if (numMeshesOut != pScene->mNumMeshes) { - - // Collapse the meshes array by removing all NULL entries - for (unsigned int real = 0, i = 0; real < numMeshesOut; ++i) { - if (pScene->mMeshes[i]) - pScene->mMeshes[real++] = pScene->mMeshes[i]; - } - - // And update the nodegraph with our nice lookup table - UpdateMeshIndices(pScene->mRootNode,remapping.get()); - - // write to log - if (!DefaultLogger::isNullLogger()) { - - char buffer[512]; - ::sprintf(buffer,"FindInstancesProcess finished. Found %i instances",pScene->mNumMeshes-numMeshesOut); - DefaultLogger::get()->info(buffer); - } - pScene->mNumMeshes = numMeshesOut; - } - else DefaultLogger::get()->debug("FindInstancesProcess finished. No instanced meshes found"); - } + DefaultLogger::get()->debug("FindInstancesProcess begin"); + if (pScene->mNumMeshes) { + + // use a pseudo hash for all meshes in the scene to quickly find + // the ones which are possibly equal. This step is executed early + // in the pipeline, so we could, depending on the file format, + // have several thousand small meshes. That's too much for a brute + // everyone-against-everyone check involving up to 10 comparisons + // each. + std::unique_ptr<uint64_t[]> hashes (new uint64_t[pScene->mNumMeshes]); + std::unique_ptr<unsigned int[]> remapping (new unsigned int[pScene->mNumMeshes]); + + unsigned int numMeshesOut = 0; + for (unsigned int i = 0; i < pScene->mNumMeshes; ++i) { + + aiMesh* inst = pScene->mMeshes[i]; + hashes[i] = GetMeshHash(inst); + + for (int a = i-1; a >= 0; --a) { + if (hashes[i] == hashes[a]) + { + aiMesh* orig = pScene->mMeshes[a]; + if (!orig) + continue; + + // check for hash collision .. we needn't check + // the vertex format, it *must* match due to the + // (brilliant) construction of the hash + if (orig->mNumBones != inst->mNumBones || + orig->mNumFaces != inst->mNumFaces || + orig->mNumVertices != inst->mNumVertices || + orig->mMaterialIndex != inst->mMaterialIndex || + orig->mPrimitiveTypes != inst->mPrimitiveTypes) + continue; + + // up to now the meshes are equal. find an appropriate + // epsilon to compare position differences against + float epsilon = ComputePositionEpsilon(inst); + epsilon *= epsilon; + + // now compare vertex positions, normals, + // tangents and bitangents using this epsilon. + if (orig->HasPositions()) { + if(!CompareArrays(orig->mVertices,inst->mVertices,orig->mNumVertices,epsilon)) + continue; + } + if (orig->HasNormals()) { + if(!CompareArrays(orig->mNormals,inst->mNormals,orig->mNumVertices,epsilon)) + continue; + } + if (orig->HasTangentsAndBitangents()) { + if (!CompareArrays(orig->mTangents,inst->mTangents,orig->mNumVertices,epsilon) || + !CompareArrays(orig->mBitangents,inst->mBitangents,orig->mNumVertices,epsilon)) + continue; + } + + // use a constant epsilon for colors and UV coordinates + static const float uvEpsilon = 10e-4f; + { + unsigned int i, end = orig->GetNumUVChannels(); + for(i = 0; i < end; ++i) { + if (!orig->mTextureCoords[i]) { + continue; + } + if(!CompareArrays(orig->mTextureCoords[i],inst->mTextureCoords[i],orig->mNumVertices,uvEpsilon)) { + break; + } + } + if (i != end) { + continue; + } + } + { + unsigned int i, end = orig->GetNumColorChannels(); + for(i = 0; i < end; ++i) { + if (!orig->mColors[i]) { + continue; + } + if(!CompareArrays(orig->mColors[i],inst->mColors[i],orig->mNumVertices,uvEpsilon)) { + break; + } + } + if (i != end) { + continue; + } + } + + // These two checks are actually quite expensive and almost *never* required. + // Almost. That's why they're still here. But there's no reason to do them + // in speed-targeted imports. + if (!configSpeedFlag) { + + // It seems to be strange, but we really need to check whether the + // bones are identical too. Although it's extremely unprobable + // that they're not if control reaches here, we need to deal + // with unprobable cases, too. It could still be that there are + // equal shapes which are deformed differently. + if (!CompareBones(orig,inst)) + continue; + + // For completeness ... compare even the index buffers for equality + // face order & winding order doesn't care. Input data is in verbose format. + std::unique_ptr<unsigned int[]> ftbl_orig(new unsigned int[orig->mNumVertices]); + std::unique_ptr<unsigned int[]> ftbl_inst(new unsigned int[orig->mNumVertices]); + + for (unsigned int tt = 0; tt < orig->mNumFaces;++tt) { + aiFace& f = orig->mFaces[tt]; + for (unsigned int nn = 0; nn < f.mNumIndices;++nn) + ftbl_orig[f.mIndices[nn]] = tt; + + aiFace& f2 = inst->mFaces[tt]; + for (unsigned int nn = 0; nn < f2.mNumIndices;++nn) + ftbl_inst[f2.mIndices[nn]] = tt; + } + if (0 != ::memcmp(ftbl_inst.get(),ftbl_orig.get(),orig->mNumVertices*sizeof(unsigned int))) + continue; + } + + // We're still here. Or in other words: 'inst' is an instance of 'orig'. + // Place a marker in our list that we can easily update mesh indices. + remapping[i] = remapping[a]; + + // Delete the instanced mesh, we don't need it anymore + delete inst; + pScene->mMeshes[i] = NULL; + break; + } + } + + // If we didn't find a match for the current mesh: keep it + if (pScene->mMeshes[i]) { + remapping[i] = numMeshesOut++; + } + } + ai_assert(0 != numMeshesOut); + if (numMeshesOut != pScene->mNumMeshes) { + + // Collapse the meshes array by removing all NULL entries + for (unsigned int real = 0, i = 0; real < numMeshesOut; ++i) { + if (pScene->mMeshes[i]) + pScene->mMeshes[real++] = pScene->mMeshes[i]; + } + + // And update the node graph with our nice lookup table + UpdateMeshIndices(pScene->mRootNode,remapping.get()); + + // write to log + if (!DefaultLogger::isNullLogger()) { + + char buffer[512]; + ::ai_snprintf(buffer,512,"FindInstancesProcess finished. Found %i instances",pScene->mNumMeshes-numMeshesOut); + DefaultLogger::get()->info(buffer); + } + pScene->mNumMeshes = numMeshesOut; + } + else DefaultLogger::get()->debug("FindInstancesProcess finished. No instanced meshes found"); + } } |