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99 lines
2.7 KiB
C
99 lines
2.7 KiB
C
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/* $Id: clip.h,v 1.3 1998/02/03 23:45:36 brianp Exp $ */
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/*
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* Mesa 3-D graphics library
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* Version: 2.6
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* Copyright (C) 1995-1996 Brian Paul
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the Free
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* Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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/*
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* $Log: clip.h,v $
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* Revision 1.3 1998/02/03 23:45:36 brianp
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* added space parameter to clip interpolation functions
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*
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* Revision 1.2 1998/01/06 02:40:52 brianp
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* added DavidB's clipping interpolation optimization
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*
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* Revision 1.1 1996/09/13 01:38:16 brianp
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* Initial revision
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*
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*/
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#ifndef CLIP_H
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#define CLIP_H
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#include "types.h"
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#ifdef DEBUG
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# define GL_VIEWCLIP_POINT( V ) gl_viewclip_point( V )
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#else
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# define GL_VIEWCLIP_POINT( V ) \
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( (V)[0] <= (V)[3] && (V)[0] >= -(V)[3] \
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&& (V)[1] <= (V)[3] && (V)[1] >= -(V)[3] \
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&& (V)[2] <= (V)[3] && (V)[2] >= -(V)[3] )
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#endif
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extern GLuint gl_viewclip_point( const GLfloat v[] );
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extern GLuint gl_viewclip_line( GLcontext* ctx, GLuint *i, GLuint *j );
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extern GLuint gl_viewclip_polygon( GLcontext* ctx, GLuint n, GLuint vlist[] );
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extern GLuint gl_userclip_point( GLcontext* ctx, const GLfloat v[] );
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extern GLuint gl_userclip_line( GLcontext* ctx, GLuint *i, GLuint *j );
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extern GLuint gl_userclip_polygon( GLcontext* ctx, GLuint n, GLuint vlist[] );
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extern void gl_ClipPlane( GLcontext* ctx,
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GLenum plane, const GLfloat *equation );
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extern void gl_GetClipPlane( GLcontext* ctx,
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GLenum plane, GLdouble *equation );
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/*
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* Clipping interpolation functions
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*/
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extern void interpolate_aux( GLcontext *ctx, GLuint space,
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GLuint dst, GLfloat t, GLuint in, GLuint out );
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extern void interpolate_aux_color_tex2( GLcontext *ctx, GLuint space,
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GLuint dst, GLfloat t, GLuint in, GLuint out );
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extern void interpolate_aux_tex2( GLcontext *ctx, GLuint space,
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GLuint dst, GLfloat t, GLuint in, GLuint out );
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extern void interpolate_aux_color( GLcontext *ctx, GLuint space,
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GLuint dst, GLfloat t, GLuint in, GLuint out );
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#endif
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