Developer Documentation
TextureControl1DTextureHandlingOVMT.cc
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49 
50 #ifdef ENABLE_OPENVOLUMEMESH_SUPPORT
51 
52 #define TEXTURECONTROL_1D_TEXTURE_HANDLING_OVM_C
53 
54 #include "TextureControl.hh"
55 #include "TextureMath.hh"
56 
57 template< typename VolumeMeshT, typename VolumeMeshObjectT >
58 void TextureControlPlugin::copyTexture( Texture& _texture , VolumeMeshT& _mesh, VolumeMeshObjectT& _obj, OpenVolumeMesh::VertexPropertyT< double > _texProp )
59 {
60  // Compute the minimal and maximal values for this texture
61  double max = -FLT_MIN;
62  double min = FLT_MAX;;
63 
64  // Compute minimal and maximal value of the coordinates
65  // Keep track of absolute values!
66  for ( OpenVolumeMesh::VertexIter v_it = _mesh.vertices_begin() ; v_it != _mesh.vertices_end(); ++v_it) {
67 
68  max = std::max( _texProp[*v_it] , max);
69  min = std::min( _texProp[*v_it] , min);
70 
71  }
72 
73  OpenVolumeMesh::TexCoordAttrib<ACG::Vec2f>& texcoord = _obj.texcoords();
74 
75  TextureMath convert(_texture.parameters,min,max);
76 
77  for ( OpenVolumeMesh::VertexIter v_it = _mesh.vertices_begin(); v_it != _mesh.vertices_end(); ++v_it) {
78  // Get the value of the property
79  double value = _texProp[*v_it];
80 
81  // Mangle it with the predefined user options (including absolute, clamping, ...)
82  value = convert.transform(value);
83 
84  // Write result to the OpenMesh texture coordinates ( 2d accessing the diagonal of a 2d texture)
85  texcoord[*v_it] = ACG::Vec2f(float(value), float(value) );
86  }
87 }
88 
89 #endif
VectorT< float, 2 > Vec2f
Definition: VectorT.hh:108
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...
Property classes for the different entity types.