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OSDTransformNode.cc
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49 
50 
51 //================================================================
52 //
53 // CLASS OSDTransformNode - IMPLEMENTATION
54 //
55 //================================================================
56 
57 
58 //== INCLUDES ====================================================
59 
60 
61 #include "OSDTransformNode.hh"
62 
64 
65 
66 //== NAMESPACES ==================================================
67 
68 
69 namespace ACG {
70 namespace SceneGraph {
71 
72 
73 //== IMPLEMENTATION ==============================================
74 
75 
76 void OSDTransformNode::enterOSD( GLState &_state, const DrawModes::DrawMode &_drawMode )
77 {
78  _state.push_modelview_matrix();
79 
80  int left, bottom, width, height;
81  _state.get_viewport( left, bottom, width, height );
82 
83  double aspect = _state.aspect();
84 
85  _state.push_projection_matrix();
86  _state.reset_projection();
87 
88  _state.perspective( 45.0, aspect, 0.8, 20.0 );
89 
90  _state.push_modelview_matrix();
91  _state.reset_modelview();
92 
93  double posX = left + center_[0] * width;
94  double posY = bottom + center_[1] * height;
95 
96  ACG::Vec3d pos = _state.unproject( ACG::Vec3d( posX, posY, 0.1 ) );
97 
98  _state.pop_modelview_matrix();
99 
100  GLMatrixd modelview = _state.modelview();
101 
102  modelview(0,3) = 0.0;
103  modelview(1,3) = 0.0;
104  modelview(2,3) = 0.0;
105 
106  _state.set_modelview( modelview );
107  _state.translate( pos[0], pos[1], pos[2], MULT_FROM_LEFT );
108 }
109 
110 
111 //----------------------------------------------------------------
112 
113 
114 void OSDTransformNode::leaveOSD( GLState &_state, const DrawModes::DrawMode &_drawMode )
115 {
116  _state.pop_projection_matrix();
117  _state.pop_modelview_matrix();
118 }
119 
120 
121 //================================================================
122 
123 
124 } // namespace SceneGraph
125 } // namespace ACG
Namespace providing different geometric functions concerning angles.
Definition: DBSCANT.cc:51
GLMatrixT< double > GLMatrixd
typedef
Definition: GLMatrixT.hh:327
void translate(Scalar _x, Scalar _y, Scalar _z, MultiplyFrom _mult_from=MULT_FROM_RIGHT)
multiply self with translation matrix (x,y,z)
Definition: GLMatrixT.cc:102