--- ray/src/util/glare.h	1991/03/19 09:08:17	1.5
+++ ray/src/util/glare.h	1991/03/20 11:56:42	1.8
@@ -18,6 +18,11 @@
 
 #define SEPS		2		/* sources this close ==> contig. */
 
+#define SAMIN		.005		/* minimum solid angle for source */
+#define MAXBUDDY	(4.*sqrt(SAMIN/PI))	/* max separation for pairing */
+
+#define TOOSMALL(s)	((s)->brt*(s)->dom < threshold*SAMIN)
+
 extern VIEW	ourview;		/* our view */
 extern VIEW	pictview;		/* picture view */
 extern VIEW	leftview, rightview;	/* leftmost and rightmost views */
@@ -25,6 +30,8 @@ extern VIEW	leftview, rightview;	/* leftmost and right
 extern int	verbose;		/* verbose reporting */
 extern char	*progname;		/* global argv[0] */
 
+extern double	threshold;		/* threshold value for glare sources */
+
 extern int	sampdens;		/* sample density */
 extern ANGLE	glarang[];		/* glare calculation angles */
 extern int	nglarangs;
@@ -53,8 +60,8 @@ struct srcspan {
 
 extern struct source {
 	FVECT	dir;		/* source direction */
-	float	dom;		/* solid angle of source */
-	float	brt;		/* average source brightness */
+	double	dom;		/* solid angle of source */
+	double	brt;		/* average source brightness */
 	struct srcspan	*first;	/* first span for this source */
 	struct source	*next;	/* next source in list */
 } *donelist;			/* finished sources */