dox/Rendering/vtkVisibleCellSelector.h

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/*=========================================================================

  Program:   Visualization Toolkit
  Module:    vtkVisibleCellSelector.h

  Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
  All rights reserved.
  See Copyright.txt or http://www.kitware.com/Copyright.htm for details.

     This software is distributed WITHOUT ANY WARRANTY; without even
     the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
     PURPOSE.  See the above copyright notice for more information.

=========================================================================*/
#ifndef __vtkVisibleCellSelector_h
#define __vtkVisibleCellSelector_h

#include "vtkObject.h"

class vtkRenderer;
class vtkIdTypeArray;
class vtkIntArray;
class vtkSelection;
class vtkProp;
class vtkIdentColoredPainter;

class VTK_RENDERING_EXPORT vtkVisibleCellSelector  : public vtkObject
{
public:
  vtkTypeMacro(vtkVisibleCellSelector, vtkObject);
  void PrintSelf(ostream& os, vtkIndent indent);
  static vtkVisibleCellSelector *New();

  virtual void SetRenderer(vtkRenderer *);


  void SetArea(unsigned int x0, unsigned int y0,
               unsigned int x1, unsigned int y1);


  void GetArea(unsigned int &x0, unsigned int &y0,
               unsigned int &x1, unsigned int &y1);


  virtual void SetProcessorId(unsigned int pid);
  vtkGetMacro(ProcessorId, unsigned int);


  void SetRenderPasses(int DoProcessor, int DoActor, 
                       int DoCellIdHi, int DoCellIdMid, int DoCellIdLo,
                       int DoVertexId=0);

  void Select();

  void GetSelectedIds(vtkIdTypeArray *ToCopyInto);

  void GetSelectedIds(vtkSelection *ToCopyInto);


  void GetSelectedVertices(vtkIdTypeArray *VertexPointers,
                           vtkIdTypeArray *VertexIds);

  vtkProp* GetActorFromId(vtkIdType id);

  void PrintSelectedIds(vtkIdTypeArray *IdsToPrint);


  void GetPixelSelection( int displayPos[2],
                          vtkIdType & procId,
                          vtkIdType & cellId,
                          vtkIdType & vertId,
                          vtkProp  *& actorPtr );  

protected:
  vtkVisibleCellSelector();
  ~vtkVisibleCellSelector();

  void SavePixelBuffer(int pass, unsigned char *src);

  void ComputeSelectedIds();

  void SetSelectMode(int mode);

  // Simply calls this->Renderer's method of the same name.
  void SetSelectConst(unsigned int constant);

  void SetIdentPainter(vtkIdentColoredPainter *);

  vtkRenderer *Renderer;

  int DoProcessor;
  int DoActor;
  int DoCellIdHi;
  int DoCellIdMid;
  int DoCellIdLo;
  int DoVertices;

  unsigned int ProcessorId;

  unsigned int X0;
  unsigned int Y0;
  unsigned int X1;
  unsigned int Y1;

  //buffer for id colored pixels
  unsigned char *PixBuffer[6];


  vtkIdTypeArray *SelectedIds;
  vtkIntArray *PixelCounts;
  vtkIdTypeArray *VertexPointers;
  vtkIdTypeArray *VertexLists;

  vtkIdentColoredPainter *IdentPainter;
private:
  vtkVisibleCellSelector(const vtkVisibleCellSelector&); //Not implemented
  void operator=(const vtkVisibleCellSelector&); //Not implemented
};

#endif