root/OpenSceneGraph/trunk/include/osgAnimation/RigTransformSoftware @ 10877

Revision 10877, 6.4 kB (checked in by cedricpinson, 4 years ago)

From Cedric Pinson,
Add check in RigTransformSoftware? if bones are null
Indent TimelineAnimationManager?
Add check for NaN in UpdateCallback?.cpp
Fix TimelineAnimationManager? clear target (a refactore of Timeline is require for futur)
Fix Computation of bounding box for RigGeometry?

RevLine 
[10693]1/*  -*-c++-*-
2 *  Copyright (C) 2009 Cedric Pinson <cedric.pinson@plopbyte.net>
3 *
4 * This library is open source and may be redistributed and/or modified under 
5 * the terms of the OpenSceneGraph Public License (OSGPL) version 0.0 or
6 * (at your option) any later version.  The full license is in LICENSE file
7 * included with this distribution, and on the openscenegraph.org website.
8 *
9 * This library is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
12 * OpenSceneGraph Public License for more details.
13 */
14
15#ifndef OSGANIMATION_RIG_TRANSFORM_SOFTWARE_H
16#define OSGANIMATION_RIG_TRANSFORM_SOFTWARE_H 1
17
18#include <osgAnimation/Export>
19#include <osgAnimation/RigTransform>
20#include <osgAnimation/Bone>
21
22namespace osgAnimation
23{
24
25    class RigGeometry;
26
27    /// This class manage format for hardware skinning
28    class OSGANIMATION_EXPORT RigTransformSoftware : public RigTransform
29    {
30    public:
31
32        virtual bool init(RigGeometry&);
33        virtual void update(RigGeometry&);
34   
35
36        class BoneWeight
37        {
38        public:
39            BoneWeight(Bone* bone, float weight) : _bone(bone), _weight(weight) {}
40            const Bone* getBone() const { return _bone.get(); }
41            float getWeight() const { return _weight; }
42            void setWeight(float w) { _weight = w; }
43        protected:
44            osg::observer_ptr<Bone> _bone;
45            float _weight;
46        };
47
48        typedef std::vector<BoneWeight> BoneWeightList;
49        typedef std::vector<int> VertexList;
50
51        class UniqBoneSetVertexSet
52        {
53        public:
54            BoneWeightList& getBones() { return _bones; }
55            VertexList& getVertexes() { return _vertexes; }
56           
57            void resetMatrix()
58            {
59                _result.set(0, 0, 0, 0,
60                            0, 0, 0, 0,
61                            0, 0, 0, 0,
62                            0, 0, 0, 1);
63            }
64            void accummulateMatrix(const osg::Matrix& invBindMatrix, const osg::Matrix& matrix, osg::Matrix::value_type weight)
65            {
66                osg::Matrix m = invBindMatrix * matrix;
67                osg::Matrix::value_type* ptr = m.ptr();
68                osg::Matrix::value_type* ptrresult = _result.ptr();
69                ptrresult[0] += ptr[0] * weight;
70                ptrresult[1] += ptr[1] * weight;
71                ptrresult[2] += ptr[2] * weight;
72
73                ptrresult[4] += ptr[4] * weight;
74                ptrresult[5] += ptr[5] * weight;
75                ptrresult[6] += ptr[6] * weight;
76
77                ptrresult[8] += ptr[8] * weight;
78                ptrresult[9] += ptr[9] * weight;
79                ptrresult[10] += ptr[10] * weight;
80
81                ptrresult[12] += ptr[12] * weight;
82                ptrresult[13] += ptr[13] * weight;
83                ptrresult[14] += ptr[14] * weight;
84            }
85            void computeMatrixForVertexSet()
86            {
87                if (_bones.empty())
88                {
[10877]89                    osg::notify(osg::WARN) << this << " RigTransformSoftware::UniqBoneSetVertexSet no bones found" << std::endl;
[10693]90                    _result = osg::Matrix::identity();
91                    return;
92                }
93                resetMatrix();
94
95                int size = _bones.size();
96                for (int i = 0; i < size; i++)
97                {
98                    const Bone* bone = _bones[i].getBone();
[10877]99                    if (!bone)
100                    {
101                        osg::notify(osg::WARN) << this << " RigTransformSoftware::computeMatrixForVertexSet Warning a bone is null, skip it" << std::endl;
102                        continue;
103                    }
[10693]104                    const osg::Matrix& invBindMatrix = bone->getInvBindMatrixInSkeletonSpace();
105                    const osg::Matrix& matrix = bone->getMatrixInSkeletonSpace();
106                    osg::Matrix::value_type w = _bones[i].getWeight();
107                    accummulateMatrix(invBindMatrix, matrix, w);
108                }
109            }
110            const osg::Matrix& getMatrix() const { return _result;}
111        protected:
112            BoneWeightList _bones;
113            VertexList _vertexes;
114            osg::Matrix _result;
115        };
116
117
118
119        template <class V> void compute(const osg::Matrix& transform, const osg::Matrix& invTransform, const V* src, V* dst)
120        {
121            // the result of matrix mult should be cached to be used for vertexes transform and normal transform and maybe other computation
122            int size = _boneSetVertexSet.size();
123            for (int i = 0; i < size; i++)
124            {
125                UniqBoneSetVertexSet& uniq = _boneSetVertexSet[i];
126                uniq.computeMatrixForVertexSet();
127                osg::Matrix matrix =  transform * uniq.getMatrix() * invTransform;
128
129                const VertexList& vertexes = uniq.getVertexes();
130                int vertexSize = vertexes.size();
131                for (int j = 0; j < vertexSize; j++)
132                {
133                    int idx = vertexes[j];
134                    dst[idx] = src[idx] * matrix;
135                }
136            }
137        }
138
139
140        template <class V> void computeNormal(const osg::Matrix& transform, const osg::Matrix& invTransform, const V* src, V* dst)
141        {
142            int size = _boneSetVertexSet.size();
143            for (int i = 0; i < size; i++)
144            {
145                UniqBoneSetVertexSet& uniq = _boneSetVertexSet[i];
146                uniq.computeMatrixForVertexSet();
147                osg::Matrix matrix =  transform * uniq.getMatrix() * invTransform;
148
149                const VertexList& vertexes = uniq.getVertexes();
150                int vertexSize = vertexes.size();
151                for (int j = 0; j < vertexSize; j++)
152                {
153                    int idx = vertexes[j];
154                    dst[idx] = osg::Matrix::transform3x3(src[idx],matrix);
155                }
156            }
157        }
158
159        const std::vector<osg::Vec3>& getPositionSource() const { return _positionSource;}
160        const std::vector<osg::Vec3>& getNormalSource() const { return _normalSource;}
161
162    protected:
163
164        void initVertexSetFromBones(const Bone::BoneMap& map, const VertexInfluenceSet::UniqVertexSetToBoneSetList& influence);
165
166        std::vector<UniqBoneSetVertexSet> _boneSetVertexSet;
167        std::vector<osg::Vec3> _positionSource;
168        std::vector<osg::Vec3> _normalSource;
169
170    };
171}
172
173#endif
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