From Cedric Pinson, Pulled in osgAnimation from OpenSceneGraph-osgWidget-dev into svn/trunk.

include/osgAnimation/VertexInfluence

@@ -0,0 +1,108 @@
+/*  -*-c++-*- 
+ *  Copyright (C) 2008 Cedric Pinson <mornifle@plopbyte.net>
+ *
+ * This library is open source and may be redistributed and/or modified under  
+ * the terms of the OpenSceneGraph Public License (OSGPL) version 0.0 or 
+ * (at your option) any later version.  The full license is in LICENSE file
+ * included with this distribution, and on the openscenegraph.org website.
+ * 
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the 
+ * OpenSceneGraph Public License for more details.
+*/
+
+#ifndef OSGANIMATION_VERTEX_INFLUENCES_H
+#define OSGANIMATION_VERTEX_INFLUENCES_H
+
+#include <osg/Object>
+#include <osgAnimation/Export>
+#include <map>
+#include <vector>
+#include <string>
+
+namespace osgAnimation
+{
+
+    // first is vertex index, and second the weight, the
+    typedef std::pair<int, float> VertexIndexWeight;
+    typedef std::vector<VertexIndexWeight> VertexList;
+    class OSGANIMATION_EXPORT VertexInfluence : public VertexList
+    {
+    public:
+        const std::string& getName() const { return _name;}
+        void setName(const std::string& name) { _name = name;}
+
+    protected:
+        // the name is the bone to link to
+        std::string _name;
+    };
+
+    //  typedef std::map<std::string, VertexInfluence> VertexInfluenceMap;
+
+    class VertexInfluenceMap : public std::map<std::string, VertexInfluence> , public osg::Object
+    {
+    public:
+        META_Object(osgAnimation, VertexInfluenceMap);
+
+        VertexInfluenceMap() {}
+        VertexInfluenceMap(const osgAnimation::VertexInfluenceMap& infl, const osg::CopyOp&) {;}
+    };
+
+
+    // this class manage VertexInfluence database by mesh
+    // reference bones per vertex ...
+    class VertexInfluenceSet
+    {
+    public:
+        typedef std::vector<VertexInfluence> BoneToVertexList;
+    
+        class BoneWeight 
+        {
+        public:
+            BoneWeight(const std::string& name, float weight) : _boneName(name), _weight(weight) {}
+            const std::string& getBoneName() const { return _boneName; }
+            float getWeight() const { return _weight; }
+            void setWeight(float weight) { _weight = weight; }
+            bool operator==(const BoneWeight& b) const { return (_boneName == b.getBoneName() && _weight == b.getWeight()); }
+        protected:
+            std::string _boneName;
+            float _weight;
+        };
+
+        typedef std::vector<BoneWeight> BoneWeightList;
+        typedef std::map<int,BoneWeightList> VertexIndexToBoneWeightMap;
+    
+        class UniqVertexSetToBoneSet 
+        {
+        public:
+            void setBones(BoneWeightList& bones) { _bones = bones;}
+            const BoneWeightList& getBones() const { return _bones;}
+            std::vector<int>& getVertexes() { return _vertexes;}
+            const std::vector<int>& getVertexes() const { return _vertexes;}
+        protected:
+            std::vector<int> _vertexes;
+            BoneWeightList _bones; // here we could limit matrix operation by caching (weight * matrix)
+        };
+
+        typedef std::vector<UniqVertexSetToBoneSet> UniqVertexSetToBoneSetList;
+
+        const UniqVertexSetToBoneSetList& getUniqVertexSetToBoneSetList() const { return _uniqVertexSetToBoneSet;}
+        void addVertexInfluence(const VertexInfluence& v) { _bone2Vertexes.push_back(v); }
+        void buildVertex2BoneList();
+        void buildUniqVertexSetToBoneSetList();
+        void clear() 
+        {
+            _bone2Vertexes.clear(); 
+            _bone2Vertexes.clear(); 
+            _uniqVertexSetToBoneSet.clear();
+        }
+    protected:
+        BoneToVertexList _bone2Vertexes;
+        VertexIndexToBoneWeightMap _vertex2Bones;
+        UniqVertexSetToBoneSetList _uniqVertexSetToBoneSet;
+    };
+
+}
+
+#endif