TextureControl1DTextureHandlingT.cc 5.62 KB
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/*===========================================================================*\
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\*===========================================================================*/

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#define TEXTURECONTROL_1D_TEXTURE_HANDLING_C

#include "TextureControl.hh"
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#include "TextureMath.hh"
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template< typename MeshT >
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void TextureControlPlugin::copyTexture ( Texture& _texture , MeshT& _mesh, OpenMesh::VPropHandleT< double > _texProp )
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{
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  // Compute the minimal and maximal values for this texture
  double max = -FLT_MIN;
  double min =  FLT_MAX;


  // Compute minimal and maximal value of the coordinates
  // Keep track of absolute values!
  for ( typename MeshT::VertexIter v_it = _mesh.vertices_begin() ; v_it != _mesh.vertices_end(); ++v_it) {

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      max = std::max( _mesh.property(_texProp,*v_it) , max);
      min = std::min( _mesh.property(_texProp,*v_it) , min);
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  }

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  if ( !_mesh.has_vertex_texcoords2D() )
    _mesh.request_vertex_texcoords2D();
  
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  TextureMath convert(_texture.parameters,min,max);

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  for ( typename MeshT::VertexIter v_it = _mesh.vertices_begin(); v_it != _mesh.vertices_end(); ++v_it) {
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    // Get the value of the property
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    double value = _mesh.property(_texProp, *v_it);
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    // Mangle it with the predefined user options (including absolute, clamping, ...)
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    value = convert.transform(value);
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    // Write result to the OpenMesh texture coordinates ( 2d accessing the diagonal of a 2d texture)
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    _mesh.set_texcoord2D( *v_it, ACG::Vec2f(float(value), float(value) ) );
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  }
}

template< typename MeshT >
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void TextureControlPlugin::copyTexture ( Texture& _texture , MeshT& _mesh, OpenMesh::HPropHandleT< double > _texProp )
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{
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  // Compute the minimal and maximal values for this texture
  double max = -FLT_MIN;
  double min =  FLT_MAX;

  // Compute minimal and maximal value of the coordinates
  // Keep track of absolute values!
  for ( typename MeshT::HalfedgeIter h_it = _mesh.halfedges_begin() ; h_it != _mesh.halfedges_end(); ++h_it) {

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      max = std::max( _mesh.property(_texProp,*h_it) , max);
      min = std::min( _mesh.property(_texProp,*h_it) , min);
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  }
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  if ( !_mesh.has_halfedge_texcoords2D() )
    _mesh.request_halfedge_texcoords2D();
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  TextureMath convert(_texture.parameters,min,max);

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  for ( typename MeshT::HalfedgeIter h_it = _mesh.halfedges_begin(); h_it != _mesh.halfedges_end(); ++h_it) {
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    // Get the value of the property
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    double value = _mesh.property(_texProp, *h_it);
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    // Mangle it with the predefined user options (including absolute, clamping, ...)
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    value = convert.transform(value);
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    // Write result to the OpenMesh texture coordinates ( 2d accessing the diagonal of a 2d texture)
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    _mesh.set_texcoord2D( *h_it, ACG::Vec2f(float(value), float(value) ) );
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  }
}