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/*=========================================================================
Program: Visualization Toolkit
Module: vtkThresholdTextureCoords.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.
=========================================================================*/
/**
* @class vtkThresholdTextureCoords
* @brief compute 1D, 2D, or 3D texture coordinates based on scalar threshold
*
* vtkThresholdTextureCoords is a filter that generates texture coordinates for
* any input dataset type given a threshold criterion. The criterion can take
* three forms: 1) greater than a particular value (ThresholdByUpper());
* 2) less than a particular value (ThresholdByLower(); or 3) between two
* values (ThresholdBetween(). If the threshold criterion is satisfied,
* the "in" texture coordinate will be set (this can be specified by the
* user). If the threshold criterion is not satisfied the "out" is set.
*
* @warning
* There is a texture map - texThres.vtk - that can be used in conjunction
* with this filter. This map defines a "transparent" region for texture
* coordinates 0<=r<0.5, and an opaque full intensity map for texture
* coordinates 0.5<r<=1.0. There is a small transition region for r=0.5.
*
* @sa
* vtkThreshold vtkThresholdPoints vtkTextureMapToPlane vtkTextureMapToSphere
* vtkTextureMapToCylinder
*/
#ifndef vtkThresholdTextureCoords_h
#define vtkThresholdTextureCoords_h
#include "vtkFiltersTextureModule.h" // For export macro
#include "vtkDataSetAlgorithm.h"
class VTKFILTERSTEXTURE_EXPORT vtkThresholdTextureCoords : public vtkDataSetAlgorithm
{
public:
static vtkThresholdTextureCoords *New();
vtkTypeMacro(vtkThresholdTextureCoords,vtkDataSetAlgorithm);
void PrintSelf(ostream& os, vtkIndent indent);
/**
* Criterion is cells whose scalars are less than lower threshold.
*/
void ThresholdByLower(double lower);
/**
* Criterion is cells whose scalars are less than upper threshold.
*/
void ThresholdByUpper(double upper);
/**
* Criterion is cells whose scalars are between lower and upper thresholds.
*/
void ThresholdBetween(double lower, double upper);
//@{
/**
* Return the upper and lower thresholds.
*/
vtkGetMacro(UpperThreshold,double);
vtkGetMacro(LowerThreshold,double);
//@}
//@{
/**
* Set the desired dimension of the texture map.
*/
vtkSetClampMacro(TextureDimension,int,1,3);
vtkGetMacro(TextureDimension,int);
//@}
//@{
/**
* Set the texture coordinate value for point satisfying threshold criterion.
*/
vtkSetVector3Macro(InTextureCoord,double);
vtkGetVectorMacro(InTextureCoord,double,3);
//@}
//@{
/**
* Set the texture coordinate value for point NOT satisfying threshold
* criterion.
*/
vtkSetVector3Macro(OutTextureCoord,double);
vtkGetVectorMacro(OutTextureCoord,double,3);
//@}
protected:
vtkThresholdTextureCoords();
~vtkThresholdTextureCoords() {}
// Usual data generation method
int RequestData(vtkInformation *, vtkInformationVector **, vtkInformationVector *);
double LowerThreshold;
double UpperThreshold;
int TextureDimension;
double InTextureCoord[3];
double OutTextureCoord[3];
int (vtkThresholdTextureCoords::*ThresholdFunction)(double s);
int Lower(double s) {return ( s <= this->LowerThreshold ? 1 : 0 );};
int Upper(double s) {return ( s >= this->UpperThreshold ? 1 : 0 );};
int Between(double s) {return ( s >= this->LowerThreshold ?
( s <= this->UpperThreshold ? 1 : 0 ) : 0 );};
private:
vtkThresholdTextureCoords(const vtkThresholdTextureCoords&) VTK_DELETE_FUNCTION;
void operator=(const vtkThresholdTextureCoords&) VTK_DELETE_FUNCTION;
};
#endif
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