summaryrefslogtreecommitdiff
path: root/src/mesh/assimp-master/code/PostProcessing/LimitBoneWeightsProcess.cpp
diff options
context:
space:
mode:
Diffstat (limited to 'src/mesh/assimp-master/code/PostProcessing/LimitBoneWeightsProcess.cpp')
-rw-r--r--src/mesh/assimp-master/code/PostProcessing/LimitBoneWeightsProcess.cpp196
1 files changed, 0 insertions, 196 deletions
diff --git a/src/mesh/assimp-master/code/PostProcessing/LimitBoneWeightsProcess.cpp b/src/mesh/assimp-master/code/PostProcessing/LimitBoneWeightsProcess.cpp
deleted file mode 100644
index 63f6bf9..0000000
--- a/src/mesh/assimp-master/code/PostProcessing/LimitBoneWeightsProcess.cpp
+++ /dev/null
@@ -1,196 +0,0 @@
-/*
-Open Asset Import Library (assimp)
-----------------------------------------------------------------------
-
-Copyright (c) 2006-2022, 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/SmallVector.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 m = 0; m < pScene->mNumMeshes; ++m) {
- ProcessMesh(pScene->mMeshes[m]);
- }
-
- 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 SmallVector<Weight,8> VertexWeightArray;
- typedef std::vector<VertexWeightArray> WeightsPerVertex;
- WeightsPerVertex vertexWeights(pMesh->mNumVertices);
- size_t maxVertexWeights = 0;
-
- for (unsigned int b = 0; b < pMesh->mNumBones; ++b)
- {
- const aiBone* bone = pMesh->mBones[b];
- for (unsigned int w = 0; w < bone->mNumWeights; ++w)
- {
- const aiVertexWeight& vw = bone->mWeights[w];
-
- if (vertexWeights.size() <= vw.mVertexId)
- continue;
-
- vertexWeights[vw.mVertexId].push_back(Weight(b, vw.mWeight));
- maxVertexWeights = std::max(maxVertexWeights, vertexWeights[vw.mVertexId].size());
- }
- }
-
- if (maxVertexWeights <= mMaxWeights)
- return;
-
- unsigned int removed = 0, old_bones = pMesh->mNumBones;
-
- // now cut the weight count if it exceeds the maximum
- for (WeightsPerVertex::iterator vit = vertexWeights.begin(); vit != vertexWeights.end(); ++vit)
- {
- if (vit->size() <= mMaxWeights)
- continue;
-
- // 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->resize(mMaxWeights);
- removed += static_cast<unsigned int>(m - vit->size());
-
- // and renormalize the weights
- float sum = 0.0f;
- for(const Weight* it = vit->begin(); it != vit->end(); ++it) {
- sum += it->mWeight;
- }
- if (0.0f != sum) {
- const float invSum = 1.0f / sum;
- for(Weight* it = vit->begin(); it != vit->end(); ++it) {
- it->mWeight *= invSum;
- }
- }
- }
-
- // clear weight count for all bone
- for (unsigned int a = 0; a < pMesh->mNumBones; ++a)
- {
- pMesh->mBones[a]->mNumWeights = 0;
- }
-
- // rebuild the vertex weight array for all bones
- for (unsigned int a = 0; a < vertexWeights.size(); ++a)
- {
- const VertexWeightArray& vw = vertexWeights[a];
- for (const Weight* it = vw.begin(); it != vw.end(); ++it)
- {
- aiBone* bone = pMesh->mBones[it->mBone];
- bone->mWeights[bone->mNumWeights++] = aiVertexWeight(a, it->mWeight);
- }
- }
-
- // remove empty bones
- unsigned int writeBone = 0;
-
- for (unsigned int readBone = 0; readBone< pMesh->mNumBones; ++readBone)
- {
- aiBone* bone = pMesh->mBones[readBone];
- if (bone->mNumWeights > 0)
- {
- pMesh->mBones[writeBone++] = bone;
- }
- else
- {
- delete bone;
- }
- }
- pMesh->mNumBones = writeBone;
-
- if (!DefaultLogger::isNullLogger()) {
- ASSIMP_LOG_INFO("Removed ", removed, " weights. Input bones: ", old_bones, ". Output bones: ", pMesh->mNumBones);
- }
-}