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Graphics/vtkThreshold.h

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00001 /*=========================================================================
00002 
00003   Program:   Visualization Toolkit
00004   Module:    $RCSfile: vtkThreshold.h,v $
00005   Language:  C++
00006 
00007   Copyright (c) 1993-2002 Ken Martin, Will Schroeder, Bill Lorensen 
00008   All rights reserved.
00009   See Copyright.txt or http://www.kitware.com/Copyright.htm for details.
00010 
00011      This software is distributed WITHOUT ANY WARRANTY; without even 
00012      the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR 
00013      PURPOSE.  See the above copyright notice for more information.
00014 
00015 =========================================================================*/
00043 #ifndef __vtkThreshold_h
00044 #define __vtkThreshold_h
00045 
00046 #include "vtkDataSetToUnstructuredGridFilter.h"
00047 
00048 #define VTK_ATTRIBUTE_MODE_DEFAULT 0
00049 #define VTK_ATTRIBUTE_MODE_USE_POINT_DATA 1
00050 #define VTK_ATTRIBUTE_MODE_USE_CELL_DATA 2
00051 
00052 class VTK_GRAPHICS_EXPORT vtkThreshold : public vtkDataSetToUnstructuredGridFilter
00053 {
00054 public:
00055   static vtkThreshold *New();
00056   vtkTypeRevisionMacro(vtkThreshold,vtkDataSetToUnstructuredGridFilter);
00057   void PrintSelf(ostream& os, vtkIndent indent);
00058 
00061   void ThresholdByLower(float lower);
00062 
00065   void ThresholdByUpper(float upper);
00066 
00069   void ThresholdBetween(float lower, float upper);
00070 
00072 
00073   vtkGetMacro(UpperThreshold,float);
00074   vtkGetMacro(LowerThreshold,float);
00076 
00078 
00084   vtkSetMacro(AttributeMode,int);
00085   vtkGetMacro(AttributeMode,int);
00086   void SetAttributeModeToDefault() 
00087     {this->SetAttributeMode(VTK_ATTRIBUTE_MODE_DEFAULT);};
00088   void SetAttributeModeToUsePointData() 
00089     {this->SetAttributeMode(VTK_ATTRIBUTE_MODE_USE_POINT_DATA);};
00090   void SetAttributeModeToUseCellData() 
00091     {this->SetAttributeMode(VTK_ATTRIBUTE_MODE_USE_CELL_DATA);};
00092   const char *GetAttributeModeAsString();
00094 
00096 
00100   vtkSetMacro(AllScalars,int);
00101   vtkGetMacro(AllScalars,int);
00102   vtkBooleanMacro(AllScalars,int);
00104   
00105 protected:
00106   vtkThreshold();
00107   ~vtkThreshold();
00108 
00109 //BTX
00110   // This is temporary solution. The vtkCutMaterial must be able
00111   // to call SelectInputScalars().
00112   friend class vtkCutMaterial;
00113 
00115 
00118   vtkGetStringMacro(InputScalarsSelection);
00119   virtual void SelectInputScalars(const char *fieldName) 
00120     {this->SetInputScalarsSelection(fieldName);}
00122 //ETX
00123   
00124   // Usual data generation method
00125   void Execute();
00126 
00127   int   AllScalars;
00128   float LowerThreshold;
00129   float UpperThreshold;
00130   int   AttributeMode;
00131 
00132   //BTX
00133   int (vtkThreshold::*ThresholdFunction)(float s);
00134   //ETX
00135 
00136   int Lower(float s) {return ( s <= this->LowerThreshold ? 1 : 0 );};
00137   int Upper(float s) {return ( s >= this->UpperThreshold ? 1 : 0 );};
00138   int Between(float s) {return ( s >= this->LowerThreshold ? 
00139                                ( s <= this->UpperThreshold ? 1 : 0 ) : 0 );};
00140 
00141   char *InputScalarsSelection;
00142   vtkSetStringMacro(InputScalarsSelection);
00143 
00144 private:
00145   vtkThreshold(const vtkThreshold&);  // Not implemented.
00146   void operator=(const vtkThreshold&);  // Not implemented.
00147 };
00148 
00149 #endif