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Imaging/vtkImageBlend.h

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00001 /*=========================================================================
00002 
00003   Program:   Visualization Toolkit
00004   Module:    $RCSfile: vtkImageBlend.h,v $
00005   Language:  C++
00006 
00007 Copyright (c) 1993-2001 Ken Martin, Will Schroeder, Bill Lorensen 
00008 All rights reserved.
00009 
00010 Redistribution and use in source and binary forms, with or without
00011 modification, are permitted provided that the following conditions are met:
00012 
00013  * Redistributions of source code must retain the above copyright notice,
00014    this list of conditions and the following disclaimer.
00015 
00016  * Redistributions in binary form must reproduce the above copyright notice,
00017    this list of conditions and the following disclaimer in the documentation
00018    and/or other materials provided with the distribution.
00019 
00020  * Neither name of Ken Martin, Will Schroeder, or Bill Lorensen nor the names
00021    of any contributors may be used to endorse or promote products derived
00022    from this software without specific prior written permission.
00023 
00024  * Modified source versions must be plainly marked as such, and must not be
00025    misrepresented as being the original software.
00026 
00027 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS ``AS IS''
00028 AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
00029 IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
00030 ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE FOR
00031 ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
00032 DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
00033 SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
00034 CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
00035 OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
00036 OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
00037 
00038 =========================================================================*/
00105 #ifndef __vtkImageBlend_h
00106 #define __vtkImageBlend_h
00107 
00108 
00109 #include "vtkImageMultipleInputFilter.h"
00110 #include "vtkImageStencilData.h"
00111 
00112 #define VTK_IMAGE_BLEND_MODE_NORMAL    0
00113 #define VTK_IMAGE_BLEND_MODE_COMPOUND 1
00114 
00115 class VTK_IMAGING_EXPORT vtkImageBlend : public vtkImageMultipleInputFilter
00116 {
00117 public:
00118   static vtkImageBlend *New();
00119   vtkTypeMacro(vtkImageBlend,vtkImageMultipleInputFilter);
00120   void PrintSelf(ostream& os, vtkIndent indent);
00121 
00123 
00125   void SetOpacity(int idx, double opacity);
00126   double GetOpacity(int idx);
00128 
00130 
00131   vtkSetObjectMacro(Stencil, vtkImageStencilData);
00132   vtkGetObjectMacro(Stencil, vtkImageStencilData);
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,float);
00152   vtkGetMacro(CompoundThreshold,float);
00154 
00155 protected:
00156   vtkImageBlend();
00157   ~vtkImageBlend();
00158 
00159   void ComputeInputUpdateExtent(int inExt[6], int outExt[6],
00160                                 int whichInput);
00161 
00162   void ExecuteInformation() {
00163     this->vtkImageMultipleInputFilter::ExecuteInformation(); };
00164 
00165   void ExecuteInformation(vtkImageData **, vtkImageData *);
00166 
00167   void ThreadedExecute(vtkImageData **inDatas, 
00168                        vtkImageData *outData,
00169                        int extent[6], 
00170                        int id);
00171 
00172   void ExecuteData(vtkDataObject *output);
00173   
00174   vtkImageStencilData *Stencil;
00175   double *Opacity;
00176   int OpacityArrayLength;
00177   int BlendMode;
00178   float CompoundThreshold;
00179   int DataWasPassed;  
00180 private:
00181   vtkImageBlend(const vtkImageBlend&);  // Not implemented.
00182   void operator=(const vtkImageBlend&);  // Not implemented.
00183 };
00184 
00186 inline const char *vtkImageBlend::GetBlendModeAsString()
00187 {
00188   switch (this->BlendMode)
00189     {
00190     case VTK_IMAGE_BLEND_MODE_NORMAL:
00191       return "Normal";
00192     case VTK_IMAGE_BLEND_MODE_COMPOUND:
00193       return "Compound";
00194     default:
00195       return "Unknown Blend Mode";
00196     }
00197 }
00198 
00199 
00200 #endif
00201 
00202 
00203 
00204 

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