openscenegraph
UpdateUniform
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1#ifndef OSGANIMATION_UPDATE_UNIFORM
2#define OSGANIMATION_UPDATE_UNIFORM 1
3
4#include <osgAnimation/AnimationUpdateCallback>
5#include <osgAnimation/Export>
6#include <osg/NodeVisitor>
7#include <osg/Uniform>
8
9namespace osgAnimation
10{
11 template <typename T>
12 class UpdateUniform : public AnimationUpdateCallback<osg::UniformCallback>
13 {
14 protected:
15 osg::ref_ptr< TemplateTarget<T> > _uniformTarget;
16
17 public:
18 UpdateUniform(const std::string& aName = "")
19 : AnimationUpdateCallback<osg::UniformCallback>(aName)
20 {
21 _uniformTarget = new TemplateTarget<T>(); // NOTE: initial value is undefined
22 }
23
24 UpdateUniform(const UpdateUniform& updateuniform,
25 const osg::CopyOp& copyop) :
26 AnimationUpdateCallback<osg::UniformCallback>(updateuniform, copyop)
27 {
28 _uniformTarget = new TemplateTarget<T>(*(updateuniform._uniformTarget));
29 }
30
31 META_Object(osgAnimation, UpdateUniform<T>);
32
33 /** Callback method called by the NodeVisitor when visiting a node.*/
34 virtual void operator () (osg::Uniform* uniform, osg::NodeVisitor* nv)
35 {
36 if (nv && nv->getVisitorType() == osg::NodeVisitor::UPDATE_VISITOR)
37 update(*uniform);
38
39 traverse(uniform, nv);
40 }
41
42 bool link(Channel* channel)
43 {
44 if (channel->getName().find("uniform") != std::string::npos)
45 return channel->setTarget(_uniformTarget.get());
46 else
47 OSG_WARN << "Channel " << channel->getName() << " does not contain a valid symbolic name for this class " << className() << std::endl;
48
49 return false;
50 }
51
52 void update(osg::Uniform& uniform)
53 {
54 T value = _uniformTarget->getValue();
55 uniform.set(value);
56 }
57
58 };
59
60 // float
61 struct UpdateFloatUniform : public UpdateUniform<float>
62 {
63 UpdateFloatUniform(const std::string& aName = "") : UpdateUniform<float>(aName) { }
64 UpdateFloatUniform(const UpdateFloatUniform& ufu,
65 const osg::CopyOp& copyop) :
66 osg::Object(ufu, copyop), // copy name
67 UpdateUniform<float>(ufu, copyop) { }
68
69 META_Object(osgAnimation, UpdateFloatUniform);
70 };
71
72 // Vec2f
73 struct UpdateVec2fUniform : public UpdateUniform<osg::Vec2f>
74 {
75 UpdateVec2fUniform(const std::string& aName = "") : UpdateUniform<osg::Vec2f>(aName) { }
76 UpdateVec2fUniform(const UpdateVec2fUniform& uv2fu,
77 const osg::CopyOp& copyop) :
78 osg::Object(uv2fu, copyop), // copy name
79 UpdateUniform<osg::Vec2f>(uv2fu, copyop) { }
80
81 META_Object(osgAnimation, UpdateVec2fUniform);
82 };
83
84 // Vec3f
85 struct UpdateVec3fUniform : public UpdateUniform<osg::Vec3f>
86 {
87 UpdateVec3fUniform(const std::string& aName = "") : UpdateUniform<osg::Vec3f>(aName) { }
88 UpdateVec3fUniform(const UpdateVec3fUniform& uv3fu,
89 const osg::CopyOp& copyop) :
90 osg::Object(uv3fu, copyop), // copy name
91 UpdateUniform<osg::Vec3f>(uv3fu, copyop) { }
92
93 META_Object(osgAnimation, UpdateVec3fUniform);
94 };
95
96 // Vec4f
97 struct UpdateVec4fUniform : public UpdateUniform<osg::Vec4f>
98 {
99 UpdateVec4fUniform(const std::string& aName = "") : UpdateUniform<osg::Vec4f>(aName) { }
100 UpdateVec4fUniform(const UpdateVec4fUniform& uv4fu,
101 const osg::CopyOp& copyop) :
102 osg::Object(uv4fu, copyop), // copy name
103 UpdateUniform<osg::Vec4f>(uv4fu, copyop) { }
104
105 META_Object(osgAnimation, UpdateVec4fUniform);
106 };
107
108 // Matrixf
109 struct UpdateMatrixfUniform : public UpdateUniform<osg::Matrixf>
110 {
111 UpdateMatrixfUniform(const std::string& aName = "") : UpdateUniform<osg::Matrixf>(aName) { }
112 UpdateMatrixfUniform(const UpdateMatrixfUniform& umfu,
113 const osg::CopyOp& copyop) :
114 osg::Object(umfu, copyop), // copy name
115 UpdateUniform<osg::Matrixf>(umfu, copyop) { }
116
117 META_Object(osgAnimation, UpdateMatrixfUniform);
118 };
119}
120
121#endif