void RigTransformSoftware::initVertexSetFromBones(const BoneMap& map, const VertexInfluenceSet::UniqVertexSetToBoneSetList& influence)
{
_boneSetVertexSet.clear();
int size = influence.size();
_boneSetVertexSet.resize(size);
for (int i = 0; i < size; i++)
{
const VertexInfluenceSet::UniqVertexSetToBoneSet& inf = influence[i];
int nbBones = inf.getBones().size();
BoneWeightList& boneList = _boneSetVertexSet[i].getBones();
double sumOfWeight = 0;
for (int b = 0; b < nbBones; b++)
{
const std::string& bname = inf.getBones()[b].getBoneName();
float weight = inf.getBones()[b].getWeight();
BoneMap::const_iterator it = map.find(bname);
if (it == map.end())
{
OSG_WARN << "RigTransformSoftware Bone " << bname << " not found, skip the influence group " <<bname << std::endl;
continue;
}
Bone* bone = it->second.get();
boneList.push_back(BoneWeight(bone, weight));
sumOfWeight += weight;
}
// if a bone referenced by a vertexinfluence is missed it can make the sum less than 1.0
// so we check it and renormalize the all weight bone
const double threshold = 1e-4;
if (!_boneSetVertexSet[i].getBones().empty() &&
(sumOfWeight < 1.0 - threshold || sumOfWeight > 1.0 + threshold))
{
for (int b = 0; b < (int)boneList.size(); b++)
boneList[b].setWeight(boneList[b].getWeight() / sumOfWeight);
}
_boneSetVertexSet[i].getVertexes() = inf.getVertexes();
}
}
bool RigTransformHardware::createPalette(int nbVertexes, BoneMap boneMap, const VertexInfluenceSet::VertexIndexToBoneWeightMap& vertexIndexToBoneWeightMap)
{
typedef std::map<std::string, int> BoneNameCountMap;
BonePalette palette;
BoneNameCountMap boneNameCountMap;
// init vertex attribute data
VertexIndexWeightList vertexIndexWeight;
vertexIndexWeight.resize(nbVertexes);
int maxBonePerVertex = 0;
for (VertexInfluenceSet::VertexIndexToBoneWeightMap::const_iterator vit = vertexIndexToBoneWeightMap.begin(); vit != vertexIndexToBoneWeightMap.end(); ++vit)
{
int vertexIndex = vit->first;
const VertexInfluenceSet::BoneWeightList& boneWeightList = vit->second;
int bonesForThisVertex = 0;
for (VertexInfluenceSet::BoneWeightList::const_iterator it = boneWeightList.begin(); it != boneWeightList.end(); ++it)
{
const VertexInfluenceSet::BoneWeight& bw = *it;
if(fabs(bw.getWeight()) > 1e-2) // dont use bone with weight too small
{
if (boneNameCountMap.find(bw.getBoneName()) != boneNameCountMap.end())
{
boneNameCountMap[bw.getBoneName()]++;
bonesForThisVertex++; // count max number of bones per vertexes
vertexIndexWeight[vertexIndex].push_back(IndexWeightEntry(_boneNameToPalette[bw.getBoneName()],bw.getWeight()));
}
else
{
if (boneMap.find(bw.getBoneName()) == boneMap.end())
{
OSG_INFO << "RigTransformHardware::createPalette can't find bone " << bw.getBoneName() << " skip this influence" << std::endl;
continue;
}
boneNameCountMap[bw.getBoneName()] = 1; // for stats
bonesForThisVertex++;
palette.push_back(boneMap[bw.getBoneName()]);
_boneNameToPalette[bw.getBoneName()] = palette.size()-1;
vertexIndexWeight[vertexIndex].push_back(IndexWeightEntry(_boneNameToPalette[bw.getBoneName()],bw.getWeight()));
}
}
else
{
OSG_WARN << "RigTransformHardware::createPalette Bone " << bw.getBoneName() << " has a weight " << bw.getWeight() << " for vertex " << vertexIndex << " this bone will not be in the palette" << std::endl;
}
}
maxBonePerVertex = osg::maximum(maxBonePerVertex, bonesForThisVertex);
}
OSG_INFO << "RigTransformHardware::createPalette maximum number of bone per vertex is " << maxBonePerVertex << std::endl;
OSG_INFO << "RigTransformHardware::createPalette matrix palette has " << boneNameCountMap.size() << " entries" << std::endl;
for (BoneNameCountMap::iterator it = boneNameCountMap.begin(); it != boneNameCountMap.end(); ++it)
{
OSG_INFO << "RigTransformHardware::createPalette Bone " << it->first << " is used " << it->second << " times" << std::endl;
}
OSG_INFO << "RigTransformHardware::createPalette will use " << boneNameCountMap.size() * 4 << " uniforms" << std::endl;
for (int i = 0 ; i < (int)vertexIndexWeight.size(); i++)
vertexIndexWeight[i].resize(maxBonePerVertex);
_nbVertexes = nbVertexes;
_bonesPerVertex = maxBonePerVertex;
_bonePalette = palette;
_vertexIndexMatrixWeightList = vertexIndexWeight;
_uniformMatrixPalette = createVertexUniform();
_boneWeightAttribArrays = createVertexAttribList();
return true;
}
