oglps.h File Reference

High-quality OpenGL-to-Postscript rendering. More...

#include <sg/sg_base.h>

Include dependency graph for oglps.h:

This graph shows which files directly or indirectly include this file:

Go to the source code of this file.

Functions
void	Oglps_begin (void)
	Setup the feedback buffer for the OpenGL library to render into.
void	Oglps_end (int outLine, int inColor, int doCulling)
	Feed triangles from the OpenGL library into our buffer and output to file.
void	Oglps_gen (char *filename, int inColor, int width, int height)
	Quick and dirty postscript generator (low-resolution only).

---

Detailed Description

High-quality OpenGL-to-Postscript rendering.

Author:

Michael Holst

Note:

None

Version:

Id

oglps.h,v 1.12 2008/05/19 20:11:25 fetk Exp

Attention:

 *
 * SG = < Socket Graphics >
 * Copyright (C) 1994--2008 Michael Holst
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
 * 
 *  

---

Function Documentation

void Oglps_begin

(

void

)

Setup the feedback buffer for the OpenGL library to render into.

Author:

Michael Holst

Note:

We malloc the float, triangle, and edge buffer areas, set glRenderMode to GL_FEEDBACK, and finish by opening the output postscript file.
The input parameters are interpretted as:
filename ==> name of eventual output PostScript file

Returns:

None

void Oglps_end	(	int	outLine,
		int	inColor,
		int	doCulling
	)

Feed triangles from the OpenGL library into our buffer and output to file.

Author:

Michael Holst

Note:

We flush the OpenGL rendering buffer, grab the triangles and edges from feedback buffer, construct a proper ordering for the painter's algorithm, and finally write the postscript output.

Returns:

None

Parameters:

	outLine	0=use filled triangles 1=use filled triangles and then outline them
	inColor	0=grayscale 1=color
	doCulling	0=don't cull (render everything) 1=cull (remove backface triangles before rendering)

void Oglps_gen	(	char *	filename,
		int	inColor,
		int	width,
		int	height
	)

Quick and dirty postscript generator (low-resolution only).

Author:

Michael Holst

Note:

This generator is a modified example from Mark Kilgard's book.

Returns:

None

Parameters:

	filename	name of file containing PostScript output
	inColor	0=grayscale, 1=color
	width	width of input image in pixels
	height	height of input image in pixels