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129 lines
3.9 KiB
C++
129 lines
3.9 KiB
C++
/*=========================================================================
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Program: Visualization Toolkit
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Module: vtkThresholdTextureCoords.h
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Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
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All rights reserved.
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See Copyright.txt or http://www.kitware.com/Copyright.htm for details.
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This software is distributed WITHOUT ANY WARRANTY; without even
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the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
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PURPOSE. See the above copyright notice for more information.
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=========================================================================*/
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/**
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* @class vtkThresholdTextureCoords
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* @brief compute 1D, 2D, or 3D texture coordinates based on scalar threshold
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*
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* vtkThresholdTextureCoords is a filter that generates texture coordinates for
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* any input dataset type given a threshold criterion. The criterion can take
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* three forms: 1) greater than a particular value (ThresholdByUpper());
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* 2) less than a particular value (ThresholdByLower(); or 3) between two
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* values (ThresholdBetween(). If the threshold criterion is satisfied,
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* the "in" texture coordinate will be set (this can be specified by the
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* user). If the threshold criterion is not satisfied the "out" is set.
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*
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* @warning
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* There is a texture map - texThres.vtk - that can be used in conjunction
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* with this filter. This map defines a "transparent" region for texture
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* coordinates 0<=r<0.5, and an opaque full intensity map for texture
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* coordinates 0.5<r<=1.0. There is a small transition region for r=0.5.
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*
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* @sa
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* vtkThreshold vtkThresholdPoints vtkTextureMapToPlane vtkTextureMapToSphere
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* vtkTextureMapToCylinder
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*/
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#ifndef vtkThresholdTextureCoords_h
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#define vtkThresholdTextureCoords_h
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#include "vtkDataSetAlgorithm.h"
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#include "vtkFiltersTextureModule.h" // For export macro
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class VTKFILTERSTEXTURE_EXPORT vtkThresholdTextureCoords : public vtkDataSetAlgorithm
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{
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public:
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static vtkThresholdTextureCoords* New();
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vtkTypeMacro(vtkThresholdTextureCoords, vtkDataSetAlgorithm);
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void PrintSelf(ostream& os, vtkIndent indent) override;
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/**
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* Criterion is cells whose scalars are less than lower threshold.
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*/
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void ThresholdByLower(double lower);
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/**
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* Criterion is cells whose scalars are less than upper threshold.
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*/
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void ThresholdByUpper(double upper);
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/**
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* Criterion is cells whose scalars are between lower and upper thresholds.
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*/
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void ThresholdBetween(double lower, double upper);
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//@{
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/**
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* Return the upper and lower thresholds.
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*/
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vtkGetMacro(UpperThreshold, double);
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vtkGetMacro(LowerThreshold, double);
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//@}
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//@{
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/**
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* Set the desired dimension of the texture map.
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*/
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vtkSetClampMacro(TextureDimension, int, 1, 3);
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vtkGetMacro(TextureDimension, int);
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//@}
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//@{
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/**
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* Set the texture coordinate value for point satisfying threshold criterion.
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*/
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vtkSetVector3Macro(InTextureCoord, double);
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vtkGetVectorMacro(InTextureCoord, double, 3);
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//@}
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//@{
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/**
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* Set the texture coordinate value for point NOT satisfying threshold
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* criterion.
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*/
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vtkSetVector3Macro(OutTextureCoord, double);
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vtkGetVectorMacro(OutTextureCoord, double, 3);
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//@}
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protected:
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vtkThresholdTextureCoords();
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~vtkThresholdTextureCoords() override {}
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// Usual data generation method
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int RequestData(vtkInformation*, vtkInformationVector**, vtkInformationVector*) override;
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double LowerThreshold;
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double UpperThreshold;
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int TextureDimension;
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double InTextureCoord[3];
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double OutTextureCoord[3];
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int (vtkThresholdTextureCoords::*ThresholdFunction)(double s);
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int Lower(double s) { return (s <= this->LowerThreshold ? 1 : 0); }
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int Upper(double s) { return (s >= this->UpperThreshold ? 1 : 0); }
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int Between(double s)
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{
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return (s >= this->LowerThreshold ? (s <= this->UpperThreshold ? 1 : 0) : 0);
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}
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private:
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vtkThresholdTextureCoords(const vtkThresholdTextureCoords&) = delete;
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void operator=(const vtkThresholdTextureCoords&) = delete;
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};
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#endif
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