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OSDTransformNode.cc
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40 \*===========================================================================*/
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42 /*===========================================================================*\
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44 * $Revision$ *
45 * $Author$ *
46 * $Date$ *
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48 \*===========================================================================*/
49
50
51 //================================================================
52 //
53 // CLASS OSDTransformNode - IMPLEMENTATION
54 //
55 //================================================================
56
57
58 //== INCLUDES ====================================================
59
60
61 #include "OSDTransformNode.hh"
62
63 #include <ACG/Scenegraph/SceneGraph.hh>
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
ACG
Namespace providing different geometric functions concerning angles.
Definition: DBSCANT.cc:51
ACG::GLMatrixd
GLMatrixT< double > GLMatrixd
typedef
Definition: GLMatrixT.hh:327
ACG::GLMatrixT::translate
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
OpenMesh::VectorT
Definition: Vector11T.hh:83
SceneGraph.hh