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.
 *
*/



#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( const vec3d *pnt );

#endif