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dox/Imaging/vtkImageBlend.h

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00001 /*=========================================================================
00002 
00003   Program:   Visualization Toolkit
00004   Module:    $RCSfile: vtkImageBlend.h,v $
00005 
00006   Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
00007   All rights reserved.
00008   See Copyright.txt or http://www.kitware.com/Copyright.htm for details.
00009 
00010      This software is distributed WITHOUT ANY WARRANTY; without even
00011      the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
00012      PURPOSE.  See the above copyright notice for more information.
00013 
00014 =========================================================================*/
00076 #ifndef __vtkImageBlend_h
00077 #define __vtkImageBlend_h
00078 
00079 
00080 #include "vtkThreadedImageAlgorithm.h"
00081 
00082 class vtkImageStencilData;
00083 
00084 #define VTK_IMAGE_BLEND_MODE_NORMAL   0
00085 #define VTK_IMAGE_BLEND_MODE_COMPOUND 1
00086 
00087 class VTK_IMAGING_EXPORT vtkImageBlend : public vtkThreadedImageAlgorithm
00088 {
00089 public:
00090   static vtkImageBlend *New();
00091   vtkTypeRevisionMacro(vtkImageBlend,vtkThreadedImageAlgorithm);
00092   void PrintSelf(ostream& os, vtkIndent indent);
00093 
00098   virtual void ReplaceNthInputConnection(int idx, vtkAlgorithmOutput* input);
00099 
00101 
00105   void SetInput(int num, vtkDataObject *input);
00106   void SetInput(vtkDataObject *input) { this->SetInput(0, input); };
00108 
00110 
00113   vtkDataObject *GetInput(int num);
00114   vtkDataObject *GetInput() { return this->GetInput(0); };
00116 
00120   int GetNumberOfInputs() { return this->GetNumberOfInputConnections(0); };
00121 
00123 
00125   void SetOpacity(int idx, double opacity);
00126   double GetOpacity(int idx);
00128 
00130 
00131   void SetStencil(vtkImageStencilData *stencil);
00132   vtkImageStencilData *GetStencil();
00134 
00136 
00137   vtkSetClampMacro(BlendMode,int,
00138                    VTK_IMAGE_BLEND_MODE_NORMAL, 
00139                    VTK_IMAGE_BLEND_MODE_COMPOUND );
00140   vtkGetMacro(BlendMode,int);
00141   void SetBlendModeToNormal() 
00142         {this->SetBlendMode(VTK_IMAGE_BLEND_MODE_NORMAL);};
00143   void SetBlendModeToCompound() 
00144         {this->SetBlendMode(VTK_IMAGE_BLEND_MODE_COMPOUND);};
00145   const char *GetBlendModeAsString(void);
00147 
00149 
00151   vtkSetMacro(CompoundThreshold,double);
00152   vtkGetMacro(CompoundThreshold,double);
00154 
00155 protected:
00156   vtkImageBlend();
00157   ~vtkImageBlend();
00158 
00159   virtual int RequestUpdateExtent(vtkInformation *, 
00160                                   vtkInformationVector **,
00161                                   vtkInformationVector *);
00162 
00163   void InternalComputeInputUpdateExtent(int inExt[6], int outExt[6],
00164                                         int inWExtent[6]);
00165 
00166   
00167 
00168   virtual int RequestInformation (vtkInformation *, 
00169                                   vtkInformationVector **,
00170                                   vtkInformationVector *);
00171 
00172   void ThreadedRequestData (vtkInformation* request,
00173                             vtkInformationVector** inputVector,
00174                             vtkInformationVector* outputVector,
00175                             vtkImageData ***inData, vtkImageData **outData,
00176                             int ext[6], int id);
00177 
00178   // see vtkAlgorithm for docs.
00179   virtual int FillInputPortInformation(int, vtkInformation*);
00180 
00181   // see vtkAlgorithm for docs.
00182   virtual int RequestData(vtkInformation* request,
00183                           vtkInformationVector** inputVector,
00184                           vtkInformationVector* outputVector);
00185   
00186   double *Opacity;
00187   int OpacityArrayLength;
00188   int BlendMode;
00189   double CompoundThreshold;
00190   int DataWasPassed;  
00191 
00192 private:
00193   vtkImageBlend(const vtkImageBlend&);  // Not implemented.
00194   void operator=(const vtkImageBlend&);  // Not implemented.
00195 };
00196 
00198 inline const char *vtkImageBlend::GetBlendModeAsString()
00199 {
00200   switch (this->BlendMode)
00201     {
00202     case VTK_IMAGE_BLEND_MODE_NORMAL:
00203       return "Normal";
00204     case VTK_IMAGE_BLEND_MODE_COMPOUND:
00205       return "Compound";
00206     default:
00207       return "Unknown Blend Mode";
00208     }
00209 }
00210 
00211 
00212 #endif
00213 
00214 
00215 
00216 

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