Developer Documentation
TextureControl1DTextureHandlingT_impl.hh
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41 
42 
43 
44 #define TEXTURECONTROL_1D_TEXTURE_HANDLING_C
45 
46 #include "TextureControl.hh"
47 #include "TextureMath.hh"
48 
49 template< typename MeshT >
51 {
52  // Compute the minimal and maximal values for this texture
53  double max = -FLT_MIN;
54  double min = FLT_MAX;
55 
56 
57  // Compute minimal and maximal value of the coordinates
58  // Keep track of absolute values!
59  for ( typename MeshT::VertexIter v_it = _mesh.vertices_begin() ; v_it != _mesh.vertices_end(); ++v_it) {
60 
61  max = std::max( _mesh.property(_texProp,*v_it) , max);
62  min = std::min( _mesh.property(_texProp,*v_it) , min);
63 
64  }
65 
66 
67  if ( !_mesh.has_vertex_texcoords2D() )
68  _mesh.request_vertex_texcoords2D();
69 
70  TextureMath convert(_texture.parameters,min,max);
71 
72  for ( typename MeshT::VertexIter v_it = _mesh.vertices_begin(); v_it != _mesh.vertices_end(); ++v_it) {
73  // Get the value of the property
74  double value = _mesh.property(_texProp, *v_it);
75 
76  // Mangle it with the predefined user options (including absolute, clamping, ...)
77  value = convert.transform(value);
78 
79  // Write result to the OpenMesh texture coordinates ( 2d accessing the diagonal of a 2d texture)
80  _mesh.set_texcoord2D( *v_it, ACG::Vec2f(float(value), float(value) ) );
81  }
82 }
83 
84 template< typename MeshT >
86 {
87  // Compute the minimal and maximal values for this texture
88  double max = -FLT_MIN;
89  double min = FLT_MAX;
90 
91  // Compute minimal and maximal value of the coordinates
92  // Keep track of absolute values!
93  for ( typename MeshT::HalfedgeIter h_it = _mesh.halfedges_begin() ; h_it != _mesh.halfedges_end(); ++h_it) {
94 
95  max = std::max( _mesh.property(_texProp,*h_it) , max);
96  min = std::min( _mesh.property(_texProp,*h_it) , min);
97 
98  }
99 
100  if ( !_mesh.has_halfedge_texcoords2D() )
101  _mesh.request_halfedge_texcoords2D();
102 
103  TextureMath convert(_texture.parameters,min,max);
104 
105  for ( typename MeshT::HalfedgeIter h_it = _mesh.halfedges_begin(); h_it != _mesh.halfedges_end(); ++h_it) {
106 
107  // Get the value of the property
108  double value = _mesh.property(_texProp, *h_it);
109 
110  // Mangle it with the predefined user options (including absolute, clamping, ...)
111  value = convert.transform(value);
112 
113  // Write result to the OpenMesh texture coordinates ( 2d accessing the diagonal of a 2d texture)
114  _mesh.set_texcoord2D( *h_it, ACG::Vec2f(float(value), float(value) ) );
115  }
116 }
117 
TexParameters parameters
Parameters of the texture.
Definition: TextureData.hh:138
double transform(const double _input) const
Modify given values based on the specified parameters given to the constructor.
Definition: TextureMath.cc:89
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...