Developer Documentation
TextureControl1DTextureHandlingT.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 * $LastChangedBy$ *
46 * $Date$ *
47 * *
48 \*===========================================================================*/
49 
50 #define TEXTURECONTROL_1D_TEXTURE_HANDLING_C
51 
52 #include "TextureControl.hh"
53 #include "TextureMath.hh"
54 
55 template< typename MeshT >
57 {
58  // Compute the minimal and maximal values for this texture
59  double max = -FLT_MIN;
60  double min = FLT_MAX;
61 
62 
63  // Compute minimal and maximal value of the coordinates
64  // Keep track of absolute values!
65  for ( typename MeshT::VertexIter v_it = _mesh.vertices_begin() ; v_it != _mesh.vertices_end(); ++v_it) {
66 
67  max = std::max( _mesh.property(_texProp,*v_it) , max);
68  min = std::min( _mesh.property(_texProp,*v_it) , min);
69 
70  }
71 
72 
73  if ( !_mesh.has_vertex_texcoords2D() )
74  _mesh.request_vertex_texcoords2D();
75 
76  TextureMath convert(_texture.parameters,min,max);
77 
78  for ( typename MeshT::VertexIter v_it = _mesh.vertices_begin(); v_it != _mesh.vertices_end(); ++v_it) {
79  // Get the value of the property
80  double value = _mesh.property(_texProp, *v_it);
81 
82  // Mangle it with the predefined user options (including absolute, clamping, ...)
83  value = convert.transform(value);
84 
85  // Write result to the OpenMesh texture coordinates ( 2d accessing the diagonal of a 2d texture)
86  _mesh.set_texcoord2D( *v_it, ACG::Vec2f(float(value), float(value) ) );
87  }
88 }
89 
90 template< typename MeshT >
92 {
93  // Compute the minimal and maximal values for this texture
94  double max = -FLT_MIN;
95  double min = FLT_MAX;
96 
97  // Compute minimal and maximal value of the coordinates
98  // Keep track of absolute values!
99  for ( typename MeshT::HalfedgeIter h_it = _mesh.halfedges_begin() ; h_it != _mesh.halfedges_end(); ++h_it) {
100 
101  max = std::max( _mesh.property(_texProp,*h_it) , max);
102  min = std::min( _mesh.property(_texProp,*h_it) , min);
103 
104  }
105 
106  if ( !_mesh.has_halfedge_texcoords2D() )
107  _mesh.request_halfedge_texcoords2D();
108 
109  TextureMath convert(_texture.parameters,min,max);
110 
111  for ( typename MeshT::HalfedgeIter h_it = _mesh.halfedges_begin(); h_it != _mesh.halfedges_end(); ++h_it) {
112 
113  // Get the value of the property
114  double value = _mesh.property(_texProp, *h_it);
115 
116  // Mangle it with the predefined user options (including absolute, clamping, ...)
117  value = convert.transform(value);
118 
119  // Write result to the OpenMesh texture coordinates ( 2d accessing the diagonal of a 2d texture)
120  _mesh.set_texcoord2D( *h_it, ACG::Vec2f(float(value), float(value) ) );
121  }
122 }
123 
TexParameters parameters
Parameters of the texture.
Definition: TextureData.hh:144
void copyTexture(Texture &_texture, MeshT &_mesh, OpenMesh::VPropHandleT< double > _texProp)
Copy the supplied 1D vertex property to both coordinates of the 2D vertex OM texture property...
double transform(const double _input) const
Modify given values based on the specified parameters given to the constructor.
Definition: TextureMath.cc:95