Developer Documentation
OSDTransformNode.cc
1 /*===========================================================================*\
2  * *
3  * OpenFlipper *
4  * Copyright (c) 2001-2015, RWTH-Aachen University *
5  * Department of Computer Graphics and Multimedia *
6  * All rights reserved. *
7  * www.openflipper.org *
8  * *
9  *---------------------------------------------------------------------------*
10  * This file is part of OpenFlipper. *
11  *---------------------------------------------------------------------------*
12  * *
13  * Redistribution and use in source and binary forms, with or without *
14  * modification, are permitted provided that the following conditions *
15  * are met: *
16  * *
17  * 1. Redistributions of source code must retain the above copyright notice, *
18  * this list of conditions and the following disclaimer. *
19  * *
20  * 2. Redistributions in binary form must reproduce the above copyright *
21  * notice, this list of conditions and the following disclaimer in the *
22  * documentation and/or other materials provided with the distribution. *
23  * *
24  * 3. Neither the name of the copyright holder nor the names of its *
25  * contributors may be used to endorse or promote products derived from *
26  * this software without specific prior written permission. *
27  * *
28  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS *
29  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED *
30  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A *
31  * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER *
32  * OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, *
33  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, *
34  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR *
35  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF *
36  * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING *
37  * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS *
38  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. *
39  * *
40 \*===========================================================================*/
41 
42 /*===========================================================================*\
43  * *
44  * $Revision$ *
45  * $Author$ *
46  * $Date$ *
47  * *
48 \*===========================================================================*/
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
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
GLMatrixT< double > GLMatrixd
typedef
Definition: GLMatrixT.hh:332
Namespace providing different geometric functions concerning angles.
Definition: DBSCANT.cc:51