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fs2open.github.com/code/render/3dinternal.h
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/*
* Copyright (C) Volition, Inc. 1999. All rights reserved.
*
* All source code herein is the property of Volition, Inc. You may not sell
* or otherwise commercially exploit the source or things you created based on the
* source.
*
*/
/*
* $Logfile: /Freespace2/code/Render/3dInternal.h $
* $Revision: 2.5 $
* $Date: 2006-03-18 10:23:46 $
* $Author: taylor $
*
* Used internally by the 3d renderer lib
*
* $Log: not supported by cvs2svn $
* Revision 2.4 2005/07/13 03:35:29 Goober5000
* remove PreProcDefine #includes in FS2
* --Goober5000
*
* Revision 2.3 2005/04/05 05:53:24 taylor
* s/vector/vec3d/g, better support for different compilers (Jens Granseuer)
*
* Revision 2.2 2004/08/11 05:06:33 Kazan
* added preprocdefines.h to prevent what happened with fred -- make sure to make all fred2 headers include this file as the _first_ include -- i have already modified fs2 files to do this
*
* Revision 2.1 2002/08/01 01:41:09 penguin
* The big include file move
*
* Revision 2.0 2002/06/03 04:02:27 penguin
* Warpcore CVS sync
*
* Revision 1.1 2002/05/02 18:03:12 mharris
* Initial checkin - converted filenames and includes to lower case
*
*
* 2 10/07/98 10:53a Dave
* Initial checkin.
*
* 1 10/07/98 10:51a Dave
*
* 5 3/16/98 4:51p John
* Added low-level code to clip all polygons against an arbritary plane.
* Took out all old model_interp_zclip and used this new method instead.
*
* 4 4/29/97 9:55a John
*
* 3 2/17/97 5:18p John
* Added a bunch of RCS headers to a bunch of old files that don't have
* them.
*
* $NoKeywords: $
*/
#ifndef _3DINTERNAL_H
#define _3DINTERNAL_H
#include "render/3d.h"
extern int Canvas_width,Canvas_height; //the actual width & height
extern float Canv_w2,Canv_h2; //fixed-point width,height/2
extern vec3d Window_scale;
extern int free_point_num;
extern float View_zoom;
extern vec3d View_position,Matrix_scale;
extern matrix View_matrix,Unscaled_matrix;
extern void free_temp_point(vertex *p);
extern vertex **clip_polygon(vertex **src,vertex **dest,int *nv,ccodes *cc,uint flags);
extern void init_free_points(void);
extern void clip_line(vertex **p0,vertex **p1,ubyte codes_or, uint flags);
extern int G3_count;
extern int G3_user_clip;
extern vec3d G3_user_clip_normal;
extern vec3d G3_user_clip_point;
// Returns TRUE if point is behind user plane
extern int g3_point_behind_user_plane( vec3d *pnt );
#endif