diff options
Diffstat (limited to 'thirdparty/assimp/code/PostProcessing/LimitBoneWeightsProcess.cpp')
| -rw-r--r-- | thirdparty/assimp/code/PostProcessing/LimitBoneWeightsProcess.cpp | 201 |
1 files changed, 0 insertions, 201 deletions
diff --git a/thirdparty/assimp/code/PostProcessing/LimitBoneWeightsProcess.cpp b/thirdparty/assimp/code/PostProcessing/LimitBoneWeightsProcess.cpp deleted file mode 100644 index d560f19287..0000000000 --- a/thirdparty/assimp/code/PostProcessing/LimitBoneWeightsProcess.cpp +++ /dev/null @@ -1,201 +0,0 @@ -/* -Open Asset Import Library (assimp) ----------------------------------------------------------------------- - -Copyright (c) 2006-2019, 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. - ----------------------------------------------------------------------- -*/ - -/** Implementation of the LimitBoneWeightsProcess post processing step */ - - -#include "LimitBoneWeightsProcess.h" -#include <assimp/StringUtils.h> -#include <assimp/postprocess.h> -#include <assimp/DefaultLogger.hpp> -#include <assimp/scene.h> -#include <stdio.h> - -using namespace Assimp; - - -// ------------------------------------------------------------------------------------------------ -// Constructor to be privately used by Importer -LimitBoneWeightsProcess::LimitBoneWeightsProcess() -{ - mMaxWeights = AI_LMW_MAX_WEIGHTS; -} - -// ------------------------------------------------------------------------------------------------ -// Destructor, private as well -LimitBoneWeightsProcess::~LimitBoneWeightsProcess() -{ - // nothing to do here -} - -// ------------------------------------------------------------------------------------------------ -// Returns whether the processing step is present in the given flag field. -bool LimitBoneWeightsProcess::IsActive( unsigned int pFlags) const -{ - return (pFlags & aiProcess_LimitBoneWeights) != 0; -} - -// ------------------------------------------------------------------------------------------------ -// Executes the post processing step on the given imported data. -void LimitBoneWeightsProcess::Execute( aiScene* pScene) { - ASSIMP_LOG_DEBUG("LimitBoneWeightsProcess begin"); - for (unsigned int a = 0; a < pScene->mNumMeshes; ++a ) { - ProcessMesh(pScene->mMeshes[a]); - } - - ASSIMP_LOG_DEBUG("LimitBoneWeightsProcess end"); -} - -// ------------------------------------------------------------------------------------------------ -// Executes the post processing step on the given imported data. -void LimitBoneWeightsProcess::SetupProperties(const Importer* pImp) -{ - // get the current value of the property - this->mMaxWeights = pImp->GetPropertyInteger(AI_CONFIG_PP_LBW_MAX_WEIGHTS,AI_LMW_MAX_WEIGHTS); -} - -// ------------------------------------------------------------------------------------------------ -// Unites identical vertices in the given mesh -void LimitBoneWeightsProcess::ProcessMesh( aiMesh* pMesh) -{ - if( !pMesh->HasBones()) - return; - - // collect all bone weights per vertex - typedef std::vector< std::vector< Weight > > WeightsPerVertex; - WeightsPerVertex vertexWeights( pMesh->mNumVertices); - - // collect all weights per vertex - for( unsigned int a = 0; a < pMesh->mNumBones; a++) - { - const aiBone* bone = pMesh->mBones[a]; - for( unsigned int b = 0; b < bone->mNumWeights; b++) - { - const aiVertexWeight& w = bone->mWeights[b]; - vertexWeights[w.mVertexId].push_back( Weight( a, w.mWeight)); - } - } - - unsigned int removed = 0, old_bones = pMesh->mNumBones; - - // now cut the weight count if it exceeds the maximum - bool bChanged = false; - for( WeightsPerVertex::iterator vit = vertexWeights.begin(); vit != vertexWeights.end(); ++vit) - { - if( vit->size() <= mMaxWeights) - continue; - - bChanged = true; - - // more than the defined maximum -> first sort by weight in descending order. That's - // why we defined the < operator in such a weird way. - std::sort( vit->begin(), vit->end()); - - // now kill everything beyond the maximum count - unsigned int m = static_cast<unsigned int>(vit->size()); - vit->erase( vit->begin() + mMaxWeights, vit->end()); - removed += static_cast<unsigned int>(m-vit->size()); - - // and renormalize the weights - float sum = 0.0f; - for( std::vector<Weight>::const_iterator it = vit->begin(); it != vit->end(); ++it ) { - sum += it->mWeight; - } - if( 0.0f != sum ) { - const float invSum = 1.0f / sum; - for( std::vector<Weight>::iterator it = vit->begin(); it != vit->end(); ++it ) { - it->mWeight *= invSum; - } - } - } - - if (bChanged) { - // rebuild the vertex weight array for all bones - typedef std::vector< std::vector< aiVertexWeight > > WeightsPerBone; - WeightsPerBone boneWeights( pMesh->mNumBones); - for( unsigned int a = 0; a < vertexWeights.size(); a++) - { - const std::vector<Weight>& vw = vertexWeights[a]; - for( std::vector<Weight>::const_iterator it = vw.begin(); it != vw.end(); ++it) - boneWeights[it->mBone].push_back( aiVertexWeight( a, it->mWeight)); - } - - // and finally copy the vertex weight list over to the mesh's bones - std::vector<bool> abNoNeed(pMesh->mNumBones,false); - bChanged = false; - - for( unsigned int a = 0; a < pMesh->mNumBones; a++) - { - const std::vector<aiVertexWeight>& bw = boneWeights[a]; - aiBone* bone = pMesh->mBones[a]; - - if ( bw.empty() ) - { - abNoNeed[a] = bChanged = true; - continue; - } - - // copy the weight list. should always be less weights than before, so we don't need a new allocation - ai_assert( bw.size() <= bone->mNumWeights); - bone->mNumWeights = static_cast<unsigned int>( bw.size() ); - ::memcpy( bone->mWeights, &bw[0], bw.size() * sizeof( aiVertexWeight)); - } - - if (bChanged) { - // the number of new bones is smaller than before, so we can reuse the old array - aiBone** ppcCur = pMesh->mBones;aiBone** ppcSrc = ppcCur; - - for (std::vector<bool>::const_iterator iter = abNoNeed.begin();iter != abNoNeed.end() ;++iter) { - if (*iter) { - delete *ppcSrc; - --pMesh->mNumBones; - } - else *ppcCur++ = *ppcSrc; - ++ppcSrc; - } - } - - if (!DefaultLogger::isNullLogger()) { - ASSIMP_LOG_INFO_F("Removed ", removed, " weights. Input bones: ", old_bones, ". Output bones: ", pMesh->mNumBones ); - } - } -} |