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/*=========================================================================
Program: Visualization Toolkit
Module: $RCSfile: vtkCGMWriter.h,v $
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 vtkCGMWriter - write polygonal data as a CGM file
// .SECTION Description
// vtkCGMWriter writes CGM (Computer Graphics Metafile) output. CGM is a 2D
// graphics vector format typically used by large plotters. This writer can
// handle vertices, lines, polygons, and triangle strips in any combination.
// Colors are specified either 1) from cell scalars (assumed to be RGB or
// RGBA color specification), 2) from a specified color; or 3) randomly
// assigned colors.
//
// Note: During output of the polygonal data, triangle strips are converted
// to triangles, and polylines to lines. Also, due to limitations in the CGM
// color model, only 256 colors are available to the color palette.
// .SECTION Caveats
// The class vtkImageToPolyDataFilter is convenient for converting a raster
// image into polygons (and color map) suitable for plotting with CGM.
// .SECTION See Also
// vtkPolyDataWriter vtkPointDataToCellData
#ifndef __vtkCGMWriter_h
#define __vtkCGMWriter_h
#include "vtkPolyDataWriter.h"
class vtkViewport;
#define VTK_COLOR_MODE_DEFAULT 0
#define VTK_COLOR_MODE_SPECIFIED_COLOR 1
#define VTK_COLOR_MODE_RANDOM_COLORS 2
class VTK_IO_EXPORT vtkCGMWriter : public vtkPolyDataWriter
{
public:
// Description:
// Instantiate with no viewport defined and sorting on. The default
// resolution is 10,000, and the color mode is set to default.
static vtkCGMWriter *New();
vtkTypeRevisionMacro(vtkCGMWriter,vtkPolyDataWriter);
void PrintSelf(ostream& os, vtkIndent indent);
// Description:
// Specify a vtkViewport object to be used to transform the vtkPolyData
// points into 2D coordinates. By default (no vtkViewport specified), the
// point coordinates are generated by ignoring the z values. If a viewport
// is defined, then the points are transformed into viewport coordinates.
virtual void SetViewport(vtkViewport*);
vtkGetObjectMacro(Viewport, vtkViewport);
// Description:
// Turn on/off the sorting of the cells via depth. If enabled, polygonal
// cells will be sorted from back to front, i.e., a Painter's algorithm
// sort.
vtkSetMacro(Sort,int);
vtkGetMacro(Sort,int);
// Description:
// Specify the resolution of the CGM file. This number is used to integerize
// the maximum coordinate range of the plot file.
vtkSetClampMacro(Resolution, int, 100, VTK_LARGE_INTEGER);
vtkGetMacro(Resolution, int);
// Description:
// Control how output polydata is colored. By default (ColorModeToDefault),
// if per cell colors are defined (unsigned chars of 1-4 components), then
// the cells are colored with these values. (If point colors are defined
// and cell colors are not, you can use vtkPointDataToCellData to convert
// the point colors to cell colors.) Otherwise, by default, the cells are
// set to the specified color. If ColorModeToSpecifiedColor is set, then
// the primitives will all be set to this color. If ColorModeToRandomColors
// is set, each cell will be randomly assigned a color.
vtkSetMacro(ColorMode,int);
vtkGetMacro(ColorMode,int);
void SetColorModeToDefault() {
this->SetColorMode(VTK_COLOR_MODE_DEFAULT);};
void SetColorModeToSpecifiedColor() {
this->SetColorMode(VTK_COLOR_MODE_SPECIFIED_COLOR);};
void SetColorModeToRandomColors() {
this->SetColorMode(VTK_COLOR_MODE_RANDOM_COLORS);};
// Description:
// Set/Get the specified color to color the polydata cells. This
// color is only used when the color mode is set to
// ColorModeToSpecifiedColor, or ColorModeToDefault is set and no
// cell colors are specified. The specified color is specified as RGB
// values ranging from (0,1). (Note: CGM will map this color to the
// closest color it supports.)
vtkSetVector3Macro(SpecifiedColor,float);
vtkGetVectorMacro(SpecifiedColor,float,3);
protected:
vtkCGMWriter();
~vtkCGMWriter();
void WriteData();
vtkViewport *Viewport;
int ColorMode;
float SpecifiedColor[3];
int Resolution;
int Sort;
private:
vtkCGMWriter(const vtkCGMWriter&); // Not implemented.
void operator=(const vtkCGMWriter&); // Not implemented.
};
#endif
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