--- ray/src/rt/rtrace.c	2005/06/02 04:47:27	2.43
+++ ray/src/rt/rtrace.c	2005/06/10 20:44:00	2.46
@@ -1,5 +1,5 @@
 #ifndef lint
-static const char	RCSid[] = "$Id: rtrace.c,v 2.43 2005/06/02 04:47:27 greg Exp $";
+static const char	RCSid[] = "$Id: rtrace.c,v 2.46 2005/06/10 20:44:00 greg Exp $";
 #endif
 /*
  *  rtrace.c - program and variables for individual ray tracing.
@@ -50,7 +50,9 @@ void  (*trace)() = NULL;		/* trace call */
 
 char  *tralist[128];			/* list of modifers to trace (or no) */
 int  traincl = -1;			/* include == 1, exclude == 0 */
-#define	 MAXTSET	511		/* maximum number in trace set */
+#ifndef  MAXTSET
+#define	 MAXTSET	1024		/* maximum number in trace set */
+#endif
 OBJECT	traset[MAXTSET+1]={0};		/* trace include/exclude set */
 
 int  hresolu = 0;			/* horizontal (scan) size */
@@ -74,7 +76,7 @@ double  specjitter = 1.;		/* specular sampling jitter 
 
 int  backvis = 1;			/* back face visibility */
 
-int  maxdepth = 8;			/* maximum recursion depth */
+int  maxdepth = -10;			/* maximum recursion depth */
 double  minweight = 2e-3;		/* minimum ray weight */
 
 char  *ambfile = NULL;			/* ambient file name */
@@ -148,7 +150,8 @@ rtrace(				/* trace rays from file */
 	char  *fname
 )
 {
-	long  vcount = hresolu>1 ? hresolu*vresolu : vresolu;
+	unsigned long  vcount = (hresolu > 1) ? (unsigned long)hresolu*vresolu
+					      : vresolu;
 	long  nextflush = hresolu;
 	FILE  *fp;
 	double	d;
@@ -187,7 +190,7 @@ rtrace(				/* trace rays from file */
 		d = normalize(direc);
 		if (d == 0.0) {				/* zero ==> flush */
 			bogusray();
-			if (--nextflush <= 0 || vcount <= 0) {
+			if (--nextflush <= 0 || !vcount) {
 				fflush(stdout);
 				nextflush = hresolu;
 			}
@@ -199,18 +202,18 @@ rtrace(				/* trace rays from file */
 			else
 				rad(orig, direc, lim_dist ? d : 0.0);
 							/* flush if time */
-			if (--nextflush == 0) {
+			if (!--nextflush) {
 				fflush(stdout);
 				nextflush = hresolu;
 			}
 		}
 		if (ferror(stdout))
 			error(SYSTEM, "write error");
-		if (--vcount == 0)			/* check for end */
+		if (vcount && !--vcount)		/* check for end */
 			break;
 	}
 	fflush(stdout);
-	if (vcount > 0)
+	if (vcount)
 		error(USER, "unexpected EOF on input");
 	if (fname != NULL)
 		fclose(fp);