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- /* clip.h */
-
- /*
- * Mesa 3-D graphics library
- * Version: 1.2
- * Copyright (C) 1995 Brian Paul (brianp@ssec.wisc.edu)
- *
- * 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.
- */
-
-
- /*
- * Line and polygon clipping.
- */
-
-
- /*
- $Id: clip.h,v 1.5 1995/10/14 17:41:29 brianp Exp $
-
- $Log: clip.h,v $
- * Revision 1.5 1995/10/14 17:41:29 brianp
- * made glClipPlane display list-able
- *
- * Revision 1.4 1995/05/22 20:59:34 brianp
- * Release 1.2
- *
- * Revision 1.3 1995/03/23 17:04:31 brianp
- * added GL_VIEWCLIP_POINT macro
- *
- * Revision 1.2 1995/03/04 19:25:29 brianp
- * 1.1 beta revision
- *
- * Revision 1.1 1995/02/24 14:18:12 brianp
- * Initial revision
- *
- */
-
-
- #ifndef CLIP_H
- #define CLIP_H
-
-
- #include "GL/gl.h"
- #include "config.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 void gl_clipplane( GLenum plane, const float *equation );
-
-
-
- extern GLuint gl_viewclip_point( const GLfloat v[] );
-
- extern GLuint gl_viewclip_line( GLuint *i, GLuint *j );
-
- extern GLuint gl_viewclip_polygon( GLuint n, GLuint vlist[] );
-
-
-
- extern GLuint gl_userclip_point( const GLfloat v[] );
-
- extern GLuint gl_userclip_line( GLuint *i, GLuint *j );
-
- extern GLuint gl_userclip_polygon( GLuint n, GLuint vlist[] );
-
-
- #endif
-
-