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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 =========================================================================*/
00096 #ifndef __vtkImageBlend_h
00097 #define __vtkImageBlend_h
00098 
00099 
00100 #include "vtkImageMultipleInputFilter.h"
00101 
00102 #define VTK_IMAGE_BLEND_MODE_NORMAL    0
00103 #define VTK_IMAGE_BLEND_MODE_COMPOUND 1
00104 
00105 class VTK_EXPORT vtkImageBlend : public vtkImageMultipleInputFilter
00106 {
00107 public:
00108   static vtkImageBlend *New();
00109   vtkTypeMacro(vtkImageBlend,vtkImageMultipleInputFilter);
00110   void PrintSelf(ostream& os, vtkIndent indent);
00111 
00114   void SetOpacity(int idx, double opacity);
00115   double GetOpacity(int idx);
00116 
00118   vtkSetClampMacro(BlendMode,int,
00119                    VTK_IMAGE_BLEND_MODE_NORMAL, 
00120                    VTK_IMAGE_BLEND_MODE_COMPOUND );
00121   vtkGetMacro(BlendMode,int);
00122   void SetBlendModeToNormal() 
00123    {this->SetBlendMode(VTK_IMAGE_BLEND_MODE_NORMAL);};
00124   void SetBlendModeToCompound() 
00125    {this->SetBlendMode(VTK_IMAGE_BLEND_MODE_COMPOUND);};
00126   const char *GetBlendModeAsString(void);
00127 
00130   vtkSetMacro(CompoundThreshold,float);
00131   vtkGetMacro(CompoundThreshold,float);
00132 
00133   virtual void UpdateData(vtkDataObject *output);
00134   
00135 protected:
00136   vtkImageBlend();
00137   ~vtkImageBlend();
00138   vtkImageBlend(const vtkImageBlend&) {};
00139   void operator=(const vtkImageBlend&) {};
00140 
00141   void ComputeInputUpdateExtent(int inExt[6], int outExt[6],
00142             int whichInput);
00143 
00144   void ThreadedExecute(vtkImageData **inDatas, 
00145                        vtkImageData *outData,
00146              int extent[6], 
00147                        int id);
00148 
00149   double *Opacity;
00150   int OpacityArrayLength;
00151   int BlendMode;
00152   float CompoundThreshold;
00153 };
00154 
00156 inline const char *vtkImageBlend::GetBlendModeAsString()
00157 {
00158   switch (this->BlendMode)
00159     {
00160     case VTK_IMAGE_BLEND_MODE_NORMAL:
00161       return "Normal";
00162     case VTK_IMAGE_BLEND_MODE_COMPOUND:
00163       return "Compound";
00164     default:
00165       return "Unknown Blend Mode";
00166     }
00167 }
00168 
00169 
00170 #endif
00171 
00172 
00173 
00174 

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