/*

   File geometry.h

   header file for geometry.c

   Phil Atkin

   (c) Division Ltd. 1991

*/

#ifdef geometry_h
#else
#define geometry_h

#include "pazpl5.h"

#if 0
extern void transformOBJ ( OBJECT *o, MATRIX m );
#endif

extern int bbox_plane ( POINT *bound, POINT plane );
extern void xform_bound ( POINT *dest, POINT *src, MATRIX b );
extern void _concatenate ( MATRIX res, MATRIX a, MATRIX b );
extern void renormalize ( MATRIX m );
extern void xform_lights ( LIGHTSOURCE *bulb, MATRIX b );
extern void plane_eqn ( POINT pl, POINT a, POINT b, POINT c );
extern void tristrip_plane_eqns ( VSTRIP *v, int back );
extern void polystrip_plane_eqns ( VSTRIP *v, int back );
extern void compute_plane_eqns ( PATCH *p, int back );
extern void compute_pmesh_plane_eqns ( PATCH *p, int back );
extern void compute_gnorms ( VSTRIP *p );
extern void compute_patch_gnorms ( PATCH *p );
extern void compute_pmesh_gnorms ( PATCH *p );
extern void transform_vstrip ( VSTRIP *p, MATRIX m );
extern void view_planes ( VIEW *v, float x, float y, float z );
extern void project_points  ( float *p, VIEW *eye, int n_points, int stride );
extern void project_spheres ( float *p, VIEW *eye, int n_points,
         int stride, float scale_fac );

#endif