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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.
=========================================================================*/
// .NAME vtkIconGlyphFilter - Filter that generates a polydata consisting of
// quads with texture coordinates referring to a set of icons within a sheet
// of icons.
// .SECTION Description
// vtkIconGlyphFilter takes in a vtkPointSet where each point corresponds to
// the center of an icon. Scalar integer data must also be set to give each
// point an icon index. This index is a zero based row major index into an
// image that contains a grid of icons (each icon is the same size). You must
// also specify 1) the size of the icon in the icon sheet (in pixels), 2) the
// size of the icon sheet (in pixels), and 3) the display size of each icon
// (again in display coordinates, or pixels).
//
// Various other parameters are used to control how this data is combined. If
// UseIconSize is true then the DisplaySize is ignored. If PassScalars is true,
// then the scalar index information is passed to the output. Also, there is an
// optional IconScale array which, if UseIconScaling is on, will scale each icon
// independently.
// .SECTION See Also
// vtkPolyDataAlgorithm vtkGlyph3D vtkGlyph2D
#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:
// Description
// Standard VTK methods.
static vtkIconGlyphFilter *New();
vtkTypeMacro(vtkIconGlyphFilter,vtkPolyDataAlgorithm);
void PrintSelf(ostream& os, vtkIndent indent);
// Description:
// Specify the Width and Height, in pixels, of an icon in the icon sheet.
vtkSetVector2Macro(IconSize,int);
vtkGetVectorMacro(IconSize,int,2);
// Description:
// Specify the Width and Height, in pixels, of an icon in the icon sheet.
vtkSetVector2Macro(IconSheetSize,int);
vtkGetVectorMacro(IconSheetSize,int,2);
// Description:
// Specify the Width and Height, in pixels, of the size of the icon when it
// is rendered. By default, the IconSize is used to set the display size
// (i.e., UseIconSize is true by default). Note that assumes that
// IconScaling is disabled, or if enabled, the scale of a particular icon
// is 1.
vtkSetVector2Macro(DisplaySize,int);
vtkGetVectorMacro(DisplaySize,int,2);
// Description:
// Specify whether the Quad generated to place the icon on will be either
// the dimensions specified by IconSize or the DisplaySize.
vtkSetMacro(UseIconSize,bool);
vtkGetMacro(UseIconSize,bool);
vtkBooleanMacro(UseIconSize, bool);
// Description:
// Specify how to specify individual icons. By default, icon scaling
// is off, but if it is on, then the filter looks for an array named
// "IconScale" to control individual icon size.
vtkSetMacro(IconScaling,int);
vtkGetMacro(IconScaling,int);
void SetIconScalingToScalingOff() {this->SetIconScaling(VTK_ICON_SCALING_OFF);}
void SetIconScalingToScalingArray()
{this->SetIconScaling(VTK_ICON_SCALING_USE_SCALING_ARRAY);}
// Description:
// Specify whether to pass the scalar icon index to the output. By
// default this is not passed since it can affect color during the
// rendering process. Note that all other point data is passed to
// the output regardless of the value of this flag.
vtkSetMacro(PassScalars,bool);
vtkGetMacro(PassScalars,bool);
vtkBooleanMacro(PassScalars,bool);
// Description:
// Specify if the input points define the center of the icon quad or one of
// top right corner, top center, top left corner, center right, center, center
// center left, bottom right corner, bottom center or bottom left corner.
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);};
// Description:
// Specify an offset (in pixels or display coordinates) that offsets the icons
// from their generating points.
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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