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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 | /*=========================================================================
Program: Visualization Toolkit
Module: vtkTriangularTCoords.h
Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
All rights reserved.
See Copyright.txt or http://www.kitware.com/Copyright.htm for details.
This software is distributed WITHOUT ANY WARRANTY; without even
the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
PURPOSE. See the above copyright notice for more information.
=========================================================================*/
// .NAME vtkTriangularTCoords - 2D texture coordinates based for triangles.
// .SECTION Description
// vtkTriangularTCoords is a filter that generates texture coordinates
// for triangles. Texture coordinates for each triangle are:
// (0,0), (1,0) and (.5,sqrt(3)/2). This filter assumes that the triangle
// texture map is symmetric about the center of the triangle. Thus the order
// Of the texture coordinates is not important. The procedural texture
// in vtkTriangularTexture is designed with this symmetry. For more information
// see the paper "Opacity-modulating Triangular Textures for Irregular
// Surfaces," by Penny Rheingans, IEEE Visualization '96, pp. 219-225.
// .SECTION See Also
// vtkTriangularTexture vtkThresholdPoints vtkTextureMapToPlane
// vtkTextureMapToSphere vtkTextureMapToCylinder
#ifndef vtkTriangularTCoords_h
#define vtkTriangularTCoords_h
#include "vtkFiltersTextureModule.h" // For export macro
#include "vtkPolyDataAlgorithm.h"
class VTKFILTERSTEXTURE_EXPORT vtkTriangularTCoords : public vtkPolyDataAlgorithm
{
public:
static vtkTriangularTCoords *New();
vtkTypeMacro(vtkTriangularTCoords,vtkPolyDataAlgorithm);
void PrintSelf(ostream& os, vtkIndent indent);
protected:
vtkTriangularTCoords() {}
~vtkTriangularTCoords() {}
// Usual data generation method
int RequestData(vtkInformation *, vtkInformationVector **, vtkInformationVector *);
private:
vtkTriangularTCoords(const vtkTriangularTCoords&); // Not implemented.
void operator=(const vtkTriangularTCoords&); // Not implemented.
};
#endif
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