dox/Graphics/vtkIconGlyphFilter.h

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

  Program:   Visualization Toolkit
  Module:    vtkIconGlyphFilter.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 __vtkIconGlyphFilter_h
#define __vtkIconGlyphFilter_h

#include "vtkPolyDataAlgorithm.h"

#define VTK_ICON_GRAVITY_TOP_RIGHT     1
#define VTK_ICON_GRAVITY_TOP_CENTER    2
#define VTK_ICON_GRAVITY_TOP_LEFT      3
#define VTK_ICON_GRAVITY_CENTER_RIGHT  4
#define VTK_ICON_GRAVITY_CENTER_CENTER 5
#define VTK_ICON_GRAVITY_CENTER_LEFT   6
#define VTK_ICON_GRAVITY_BOTTOM_RIGHT  7
#define VTK_ICON_GRAVITY_BOTTOM_CENTER 8
#define VTK_ICON_GRAVITY_BOTTOM_LEFT   9

#define VTK_ICON_SCALING_OFF 0
#define VTK_ICON_SCALING_USE_SCALING_ARRAY 1


class VTK_GRAPHICS_EXPORT vtkIconGlyphFilter : public vtkPolyDataAlgorithm
{
public:

  static vtkIconGlyphFilter *New();
  vtkTypeMacro(vtkIconGlyphFilter,vtkPolyDataAlgorithm);
  void PrintSelf(ostream& os, vtkIndent indent);


  vtkSetVector2Macro(IconSize,int);
  vtkGetVectorMacro(IconSize,int,2);


  vtkSetVector2Macro(IconSheetSize,int);
  vtkGetVectorMacro(IconSheetSize,int,2);


  vtkSetVector2Macro(DisplaySize,int);
  vtkGetVectorMacro(DisplaySize,int,2);


  vtkSetMacro(UseIconSize,bool);
  vtkGetMacro(UseIconSize,bool);
  vtkBooleanMacro(UseIconSize, bool);


  vtkSetMacro(IconScaling,int);
  vtkGetMacro(IconScaling,int);
  void SetIconScalingToScalingOff() {this->SetIconScaling(VTK_ICON_SCALING_OFF);}
  void SetIconScalingToScalingArray()
    {this->SetIconScaling(VTK_ICON_SCALING_USE_SCALING_ARRAY);}


  vtkSetMacro(PassScalars,bool);
  vtkGetMacro(PassScalars,bool);
  vtkBooleanMacro(PassScalars,bool);


  vtkSetMacro(Gravity, int);
  vtkGetMacro(Gravity, int);
  void SetGravityToTopRight() {this->SetGravity(VTK_ICON_GRAVITY_TOP_RIGHT);};
  void SetGravityToTopCenter() {this->SetGravity(VTK_ICON_GRAVITY_TOP_CENTER);};
  void SetGravityToTopLeft() {this->SetGravity(VTK_ICON_GRAVITY_TOP_LEFT);};
  void SetGravityToCenterRight() {this->SetGravity(VTK_ICON_GRAVITY_CENTER_RIGHT);};
  void SetGravityToCenterCenter() {this->SetGravity(VTK_ICON_GRAVITY_CENTER_CENTER);};
  void SetGravityToCenterLeft() {this->SetGravity(VTK_ICON_GRAVITY_CENTER_LEFT);};
  void SetGravityToBottomRight() {this->SetGravity(VTK_ICON_GRAVITY_BOTTOM_RIGHT);};
  void SetGravityToBottomCenter() {this->SetGravity(VTK_ICON_GRAVITY_BOTTOM_CENTER);};
  void SetGravityToBottomLeft() {this->SetGravity(VTK_ICON_GRAVITY_BOTTOM_LEFT);};


  vtkSetVector2Macro(Offset,int);
  vtkGetVectorMacro(Offset,int,2);

protected:
  vtkIconGlyphFilter();
  ~vtkIconGlyphFilter();

  virtual int RequestData(vtkInformation *,
                          vtkInformationVector **,
                          vtkInformationVector *);

  int IconSize[2]; // Size in pixels of an icon in an icon sheet
  int IconSheetSize[2]; // Size in pixels of the icon sheet
  int DisplaySize[2]; // Size in pixels of the icon when displayed

  int  Gravity;
  bool UseIconSize;
  int  IconScaling;
  bool PassScalars;
  int Offset[2];

private:
  vtkIconGlyphFilter(const vtkIconGlyphFilter&);  // Not implemented.
  void operator=(const vtkIconGlyphFilter&);  // Not implemented.

  void IconConvertIndex(int id, int & j, int & k);
};

inline void vtkIconGlyphFilter::IconConvertIndex(int id, int & j, int & k)
{
  int dimX = this->IconSheetSize[0]/this->IconSize[0];
  int dimY = this->IconSheetSize[1]/this->IconSize[1];

  j = id - dimX * static_cast<int>(id/dimX);
  k = dimY - static_cast<int>(id/dimX) - 1;
}

#endif

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