--- ray/src/gen/mkillum.h	1991/07/23 16:13:27	1.2
+++ ray/src/gen/mkillum.h	2007/11/05 23:40:26	2.12
@@ -1,38 +1,102 @@
-/* Copyright (c) 1991 Regents of the University of California */
-
-/* SCCSid "$SunId$ LBL" */
-
+/* RCSid: $Id: mkillum.h,v 2.12 2007/11/05 23:40:26 greg Exp $ */
 /*
  * Common definitions for mkillum
  */
+#ifndef _RAD_MKILLUM_H_
+#define _RAD_MKILLUM_H_
 
-#include  "standard.h"
-
-#include  "object.h"
-
+#include  "ray.h"
 #include  "otypes.h"
 
+#ifdef __cplusplus
+extern "C" {
+#endif
 				/* illum flags */
-#define  IL_FLAT	0x1		/* flat surface */
-#define  IL_LIGHT	0x2		/* light rather than illum */
-#define  IL_COLDST	0x4		/* colored distribution */
-#define  IL_COLAVG	0x8		/* compute average color */
-#define  IL_DATCLB	0x10		/* OK to clobber data file */
+#define  IL_LIGHT	0x1		/* light rather than illum */
+#define  IL_COLDST	0x2		/* use color distribution */
+#define  IL_COLAVG	0x4		/* use average color */
+#define  IL_DATCLB	0x8		/* OK to clobber data file */
 
+				/* up directions */
+typedef enum {
+	UDzneg=-3,
+	UDyneg=-2,
+	UDxneg=-1,
+	UDunknown=0,
+	UDxpos=1,
+	UDypos=2,
+	UDzpos=3
+} UpDir;
+
+/* XXX need to add per-band data */
+struct BSDF_data {
+	double	om_scale;		/* maximum solid angle (sr/256) */
+	int	ninc;			/* number of incoming directions */
+	int32	*inc_dir;		/* incoming direction codes */
+	BYTE	*inc_rad;		/* incoming radians to neighbor */
+	int	nout;			/* number of outgoing directions */
+	int32	*out_dir;		/* outgoing direction codes */
+	BYTE	*out_rad;		/* outgoing radians to neighbor */
+	float	*bsdf;			/* scattering distribution data */
+};				/* bidirectional scattering distrib. func. */
+
 struct illum_args {
 	int	flags;			/* flags from list above */
+	UpDir	udir;			/* up direction */
+	double	thick;			/* object thickness */
 	char	matname[MAXSTR];	/* illum material name */
 	char	datafile[MAXSTR];	/* distribution data file name */
 	int	dfnum;			/* data file number */
 	char	altmat[MAXSTR];		/* alternate material name */
+	int	sampdens;		/* point sample density */
 	int	nsamps;			/* # of samples in each direction */
-	int	nalt, nazi;		/* # of altitude and azimuth angles */
-	FVECT	orient;			/* coordinate system orientation */
+	struct BSDF_data
+		*sd;			/* scattering data (if set) */
+	float	minbrt;			/* minimum average brightness */
+	COLOR	col;			/* computed average color */
 };				/* illum options */
 
-struct rtproc {
-	int	pd[3];			/* rtrace pipe descriptors */
-	float	*buf;			/* rtrace i/o buffer */
-	int	bsiz;			/* maximum rays for rtrace buffer */
-	int	nrays;			/* current length of rtrace buffer */
-};				/* rtrace process */
+#define getBSDF_incvec(v,b,i)	decodedir(v, (b)->inc_dir[i])
+#define getBSDF_outvec(v,b,o)	decodedir(v, (b)->out_dir[o])
+#define getBSDF_incrad(b,i)	((b)->om_scale*((b)->inc_rad[i] + .5));
+#define getBSDF_outrad(b,o)	((b)->om_scale*((b)->out_rad[o] + .5));
+#define BSDF_data(b,i,o)	(b)->bsdf[(o)*(b)->ninc + (i)]
+
+extern struct BSDF_data *load_BSDF(char *fname);
+extern void free_BSDF(struct BSDF_data *b);
+extern void r_BSDF_incvec(FVECT v, struct BSDF_data *b, int i,
+				double rv, MAT4 xm);
+extern void r_BSDF_outvec(FVECT v, struct BSDF_data *b, int o,
+				double rv, MAT4 xm);
+extern int getBSDF_xfm(MAT4 xm, FVECT nrm, UpDir ud);
+extern void redistribute(struct BSDF_data *b, int nalt, int nazi,
+				FVECT u, FVECT v, FVECT w, MAT4 xm);
+
+extern void printobj(char *mod, OBJREC *obj);
+extern int average(struct illum_args *il, COLORV *da, int n);
+extern void flatout(struct illum_args *il, COLORV *da, int n, int m,
+	FVECT u, FVECT v, FVECT w);
+extern void illumout(struct illum_args *il, OBJREC *ob);
+extern void roundout(struct illum_args *il, COLORV *da, int n, int m);
+
+extern void newdist(int siz);
+extern int process_ray(RAY *r, int rv);
+extern void raysamp(int ndx, FVECT org, FVECT dir);
+extern void rayclean(void);
+
+extern int my_default(OBJREC *, struct illum_args *, char *);
+extern int my_face(OBJREC *, struct illum_args *, char *);
+extern int my_sphere(OBJREC *, struct illum_args *, char *);
+extern int my_ring(OBJREC *, struct illum_args *, char *);
+
+extern COLORV *	distarr;		/* distribution array */
+extern int	distsiz;
+
+extern char	*progname;
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* _RAD_MKILLUM_H_ */
+