--- ray/src/px/xshowtrace.c	2004/03/28 20:33:14	2.10
+++ ray/src/px/xshowtrace.c	2014/04/11 20:27:23	2.13
@@ -1,5 +1,5 @@
 #ifndef lint
-static const char	RCSid[] = "$Id: xshowtrace.c,v 2.10 2004/03/28 20:33:14 schorsch Exp $";
+static const char	RCSid[] = "$Id: xshowtrace.c,v 2.13 2014/04/11 20:27:23 greg Exp $";
 #endif
 /*
  *  Display an image and watch the rays get traced.
@@ -15,13 +15,9 @@ static const char	RCSid[] = "$Id: xshowtrace.c,v 2.10 
 
 #define MAXDEPTH	32		/* ridiculous ray tree depth */
 
-#ifdef  SMLFLT
-#define  sscanvec(s,v)	(sscanf(s,"%f %f %f",v,v+1,v+2)==3)
-#else
-#define  sscanvec(s,v)	(sscanf(s,"%lf %lf %lf",v,v+1,v+2)==3)
-#endif
+#define  sscanvec(s,v)	(sscanf(s,FVFORMAT,v,v+1,v+2)==3)
 
-char	rtcom[] = "rtrace -h- -otp -fa -x 1";
+char	rtcom[64] = "rtrace -h- -otp -fa -x 1";
 char	xicom[] = "ximage -c 256";
 
 VIEW	ourview = STDVIEW;		/* view for picture */
@@ -66,10 +62,12 @@ main(		/* takes both the octree and the image */
 	for (i = 1; i < argc-2; i++)
 		if (!strcmp(argv[i], "-s"))
 			slow++;
+		else if (!strcmp(argv[i], "-T"))
+			strcat(rtcom, " -oTp");
 		else
 			break;
 	if (i > argc-2) {
-		fprintf(stderr, "Usage: %s [-s] [rtrace args] octree picture\n",
+		fprintf(stderr, "Usage: %s [-s][-T] [rtrace args] octree picture\n",
 				progname);
 		exit(1);
 	}