/*

   File lighting.h

   header file for lighting.c

   Phil Atkin

   (c) Division Ltd. 1991

*/

#ifdef lighting_h
#else
#define lighting_h

#include "pazpl5.h"


extern void phong_shade ( VSTRIP  *v,
                   MATERIAL *surface,
                   LIGHTSOURCE   *bulbs,
                   float   *phong_table,
                   float    normfactor,
                   int      normals );

extern void white_phong_shade ( VSTRIP  *v,
                   MATERIAL *surface,
                   LIGHTSOURCE   *bulbs,
                   float   *phong_table,
                   float    normfactor,
                   int      normals );

extern float *compute_phong_table ( float power );
extern void init_phong    ( void );
extern void whiteizeBulb  ( LIGHTSOURCE *bulb );
extern LIGHTSOURCE *reorderLights ( LIGHTSOURCE **head );
extern void traceLights   ( LIGHTSOURCE *head );
extern int keep_this_bulb ( LIGHTSOURCE *bulb, POINT c, POINT p );

extern float *PAZ_phong_table;
extern float *Hvec[32];
#endif