97 lines
3.8 KiB
C++
97 lines
3.8 KiB
C++
/* -*-c++-*-
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* Copyright (C) 2008 Cedric Pinson <cedric.pinson@plopbyte.net>
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* Copyright (C) 2017 Julien Valentin <mp3butcher@hotmail.com>
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*
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* This library is open source and may be redistributed and/or modified under
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* the terms of the OpenSceneGraph Public License (OSGPL) version 0.0 or
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* (at your option) any later version. The full license is in LICENSE file
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* included with this distribution, and on the openscenegraph.org website.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* OpenSceneGraph Public License for more details.
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*/
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#ifndef OSGANIMATION_VERTEX_INFLUENCE
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#define OSGANIMATION_VERTEX_INFLUENCE 1
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#include <osg/Object>
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#include <osgAnimation/Export>
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#include <map>
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#include <vector>
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#include <string>
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namespace osgAnimation
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{
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// first is bonename, and second the weight
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struct BoneWeight: public std::pair<std::string, float>
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{
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BoneWeight( std::string f,float s):
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std::pair<std::string,float>(f,s){}
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inline const std::string& getBoneName()const{return first;}
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inline void setBoneName(const std::string&s){first=s;}
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inline const float &getWeight()const{return second;}
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inline void setWeight(float i){second=i;}
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};
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// first is vertex index, and second the weight
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struct VertexIndexWeight: public std::pair<unsigned int, float>
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{
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VertexIndexWeight( unsigned int f = 0xffffffff,float s = 0.0f): std::pair<unsigned int,float>(f,s){}
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inline const unsigned int& getIndex()const{return first;}
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inline void setIndex(unsigned int i){first=i;}
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inline const float &getWeight()const{return second;}
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inline void setWeight(float i){second=i;}
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};
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typedef std::vector<VertexIndexWeight> IndexWeightList;
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typedef std::vector<BoneWeight> BoneWeightList;
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typedef std::vector<unsigned int> IndexList;
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//Bone influence list
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class OSGANIMATION_EXPORT VertexInfluence : public IndexWeightList
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{
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public:
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const std::string& getName() const { return _name;}
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void setName(const std::string& name) { _name = name;}
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protected:
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// the name is the bone to link to
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std::string _name;
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};
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class VertexInfluenceMap : public std::map<std::string, VertexInfluence> , public osg::Object
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{
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public:
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META_Object(osgAnimation, VertexInfluenceMap);
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VertexInfluenceMap() {}
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VertexInfluenceMap(const osgAnimation::VertexInfluenceMap& org, const osg::CopyOp& copyop):
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std::map<std::string, VertexInfluence>(org),
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osg::Object(org, copyop)
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{}
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///normalize per vertex weights given numvert of the attached mesh
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void normalize(unsigned int numvert);
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///remove weakest influences in order to fit targetted numbonepervertex
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void cullInfluenceCountPerVertex(unsigned int maxnumbonepervertex, float minweight=0, bool renormalize=true);
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//compute PerVertexInfluenceList
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void computePerVertexInfluenceList(std::vector<BoneWeightList>& perVertexInfluenceList, unsigned int numvert)const;
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/// map a set of boneinfluence to a list of vertex indices sharing this set
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class VertexGroup: public std::pair<BoneWeightList, IndexList>
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{
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public:
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inline const BoneWeightList& getBoneWeights()const { return first; }
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inline void setBoneWeights( BoneWeightList& o ) { first=o; }
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inline IndexList& vertIDs() { return second; }
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};
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/// compute the minimal VertexGroup Set in which vertices shares the same influence set
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void computeMinimalVertexGroupList(std::vector<VertexGroup>&uniqVertexGroupList, unsigned int numvert)const;
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};
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}
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#endif
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