--- ray/src/util/findglare.c	1991/04/02 16:47:03	1.14
+++ ray/src/util/findglare.c	1991/04/12 10:28:40	1.17
@@ -12,8 +12,6 @@ static char SCCSid[] = "$SunId$ LBL";
 
 #include "glare.h"
 
-#include "random.h"
-
 #define FEQ(a,b)	((a)-(b)<=FTINY&&(a)-(b)<=FTINY)
 #define VEQ(v1,v2)	(FEQ((v1)[0],(v2)[0])&&FEQ((v1)[1],(v2)[1]) \
 				&&FEQ((v1)[2],(v2)[2]))
@@ -50,6 +48,7 @@ main(argc, argv)
 int	argc;
 char	*argv[];
 {
+	int	combine = 1;
 	int	gotview = 0;
 	int	rval, i;
 	char	*err;
@@ -103,6 +102,9 @@ char	*argv[];
 		case 'p':
 			picture = argv[++i];
 			break;
+		case 'c':
+			combine = !combine;
+			break;
 		case 'd':
 		case 'l':
 			rtargv[rtargc++] = argv[i];
@@ -181,6 +183,8 @@ char	*argv[];
 	if (threshold <= FTINY)
 		comp_thresh();			/* compute glare threshold */
 	analyze();				/* analyze view */
+	if (combine)
+		absorb_specks();		/* eliminate tiny sources */
 	cleanup();				/* tidy up */
 						/* print header */
 	printargs(argc, argv, stdout);
@@ -277,7 +281,7 @@ init()				/* initialize global variables */
 cleanup()				/* close files, wait for children */
 {
 	if (verbose)
-		fprintf(stderr, "%s: cleaning up...\n", progname);
+		fprintf(stderr, "%s: cleaning up...        \n", progname);
 	if (picture != NULL)
 		close_pict();
 	if (octree != NULL)
@@ -288,11 +292,11 @@ cleanup()				/* close files, wait for children */
 }
 
 
-compdir(vd, x, y)			/* compute direction for x,y */
+compdir(vd, x, y, se)			/* compute direction for x,y */
 FVECT	vd;
 int	x, y;
+SPANERR	*se;
 {
-	long	t;
 	FVECT	org;			/* dummy variable */
 
 	if (x <= -hlim)			/* left region */
@@ -304,14 +308,25 @@ int	x, y;
 				(double)(x-hlim)/(2*sampdens)+.5,
 				(double)y/(2*sampdens)+.5));
 					/* central region */
-				/* avoid over-counting of poles */
-	t = random() % vsize;
-	if (t*t >= (long)vsize*vsize - (long)y*y)
-		return(-1);
+	if (se != NULL) {	/* avoid over-counting of poles */
+		se->err += se->prob;
+		if (se->err <= 0.5)
+			return(-1);
+		se->err -= 1.0;
+	}
 	if (viewray(org, vd, &ourview, .5, (double)y/(2*sampdens)+.5) < 0)
 		return(-1);
 	spinvector(vd, vd, ourview.vup, h_theta(x));
 	return(0);
+}
+
+
+setspanerr(se, y)		/* initialize span error at y */
+register SPANERR	*se;
+int	y;
+{
+	se->err = 0.0;
+	se->prob = sqrt(1.0 - (double)((long)y*y)/((long)vsize*vsize));
 }