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/* $Id: clip.h,v 1.1 1996/09/13 01:38:16 brianp Exp $ */
/*
* Mesa 3-D graphics library
* Version: 2.0
* Copyright (C) 1995-1996 Brian Paul
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 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
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the Free
* Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
/*
* $Log: clip.h,v $
* Revision 1.1 1996/09/13 01:38:16 brianp
* Initial revision
*
*/
#ifndef CLIP_H
#define CLIP_H
#include "types.h"
#ifdef DEBUG
# define GL_VIEWCLIP_POINT( V ) gl_viewclip_point( V )
#else
# define GL_VIEWCLIP_POINT( V ) \
( (V)[0] <= (V)[3] && (V)[0] >= -(V)[3] \
&& (V)[1] <= (V)[3] && (V)[1] >= -(V)[3] \
&& (V)[2] <= (V)[3] && (V)[2] >= -(V)[3] )
#endif
extern GLuint gl_viewclip_point( const GLfloat v[] );
extern GLuint gl_viewclip_line( GLcontext* ctx, GLuint *i, GLuint *j );
extern GLuint gl_viewclip_polygon( GLcontext* ctx, GLuint n, GLuint vlist[] );
extern GLuint gl_userclip_point( GLcontext* ctx, const GLfloat v[] );
extern GLuint gl_userclip_line( GLcontext* ctx, GLuint *i, GLuint *j );
extern GLuint gl_userclip_polygon( GLcontext* ctx, GLuint n, GLuint vlist[] );
extern void gl_ClipPlane( GLcontext* ctx,
GLenum plane, const GLfloat *equation );
extern void gl_GetClipPlane( GLcontext* ctx,
GLenum plane, GLdouble *equation );
#endif
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