--- ray/src/util/findglare.c	2004/03/26 23:34:23	2.12
+++ ray/src/util/findglare.c	2022/11/29 20:45:21	2.16
@@ -1,5 +1,5 @@
 #ifndef lint
-static const char	RCSid[] = "$Id: findglare.c,v 2.12 2004/03/26 23:34:23 schorsch Exp $";
+static const char	RCSid[] = "$Id: findglare.c,v 2.16 2022/11/29 20:45:21 greg Exp $";
 #endif
 /*
  * Find glare sources in a scene or image.
@@ -9,10 +9,6 @@ static const char	RCSid[] = "$Id: findglare.c,v 2.12 2
 
 #include "glare.h"
 
-#define FEQ(a,b)	((a)-(b)<=FTINY&&(b)-(a)<=FTINY)
-#define VEQ(v1,v2)	(FEQ((v1)[0],(v2)[0])&&FEQ((v1)[1],(v2)[1]) \
-				&&FEQ((v1)[2],(v2)[2]))
-
 char	*rtargv[64] = {"rtrace", "-h-", "-ov", "-fff", "-ld-", "-i-", "-I-"};
 int	rtargc = 7;
 
@@ -65,7 +61,7 @@ main(
 		while ((rval = expandarg(&argc, &argv, i)) > 0)
 			;
 		if (rval < 0) {
-			fprintf(stderr, "%s: cannot expand '%s'",
+			fprintf(stderr, "%s: cannot expand '%s'\n",
 					argv[0], argv[i]);
 			exit(1);
 		}
@@ -129,10 +125,13 @@ main(
 			/* FALL THROUGH */
 		case 's':
 		case 'P':
+		case 'n':
 			rtargv[rtargc++] = argv[i];
 			rtargv[rtargc++] = argv[++i];
 			break;
 		case 'w':
+		case 'u':
+		case 'b':
 			rtargv[rtargc++] = argv[i];
 			break;
 		case 'a':
@@ -143,6 +142,14 @@ main(
 			}
 			rtargv[rtargc++] = argv[++i];
 			break;
+		case 'm':
+			rtargv[rtargc++] = argv[i];
+			if ((argv[i][2] == 'e') | (argv[i][2] == 'a')) {
+				rtargv[rtargc++] = argv[++i];
+				rtargv[rtargc++] = argv[++i];
+			}
+			rtargv[rtargc++] = argv[++i];
+			break;
 		default:
 			goto userr;
 		}
@@ -184,7 +191,7 @@ main(
 			exit(1);
 		}
 		ourview = pictview;
-	} else if (picture != NULL && !VEQ(ourview.vp, pictview.vp)) {
+	} else if (picture != NULL && !VABSEQ(ourview.vp, pictview.vp)) {
 		fprintf(stderr, "%s: picture must have same viewpoint\n",
 				progname);
 		exit(1);
@@ -236,7 +243,7 @@ angcmp(		/* compare two angles */
 	const void	*ap2
 )
 {
-	register int	a1, a2;
+	int	a1, a2;
 
 	a1 = *(ANGLE *)ap1;
 	a2 = *(ANGLE *)ap2;
@@ -253,7 +260,7 @@ static void
 init(void)				/* initialize global variables */
 {
 	double	d;
-	register int	i;
+	int	i;
 
 	if (verbose)
 		fprintf(stderr, "%s: initializing data structures...\n",
@@ -341,7 +348,7 @@ cleanup(void)				/* close files, wait for children */
 }
 
 
-extern int
+int
 compdir(			/* compute direction for x,y */
 	FVECT	vd,
 	int	x,
@@ -374,13 +381,13 @@ compdir(			/* compute direction for x,y */
 }
 
 
-extern double
+double
 pixsize(		/* return the solid angle of pixel at (x,y) */
 	int	x,
 	int	y
 )
 {
-	register int	hl, xo;
+	int	hl, xo;
 	double	disc;
 
 	hl = hlim(y);
@@ -397,7 +404,7 @@ pixsize(		/* return the solid angle of pixel at (x,y) 
 }
 
 
-extern void
+void
 memerr(			/* malloc failure */
 	char	*s
 )
@@ -410,7 +417,7 @@ memerr(			/* malloc failure */
 static void
 printsources(void)			/* print out glare sources */
 {
-	register struct source	*sp;
+	struct source	*sp;
 
 	printf("BEGIN glare source\n");
 	for (sp = donelist; sp != NULL; sp = sp->next)
@@ -424,7 +431,7 @@ printsources(void)			/* print out glare sources */
 static void
 printillum(void)			/* print out indirect illuminances */
 {
-	register int	i;
+	int	i;
 
 	printf("BEGIN indirect illuminance\n");
 	for (i = 0; i < nglardirs; i++)