--- ray/src/rt/rpict.c	2003/06/05 19:29:34	2.55
+++ ray/src/rt/rpict.c	2003/09/24 14:55:54	2.63
@@ -7,11 +7,12 @@ static const char RCSid[] = "$Id";
 
 #include "copyright.h"
 
+#include  "platform.h"
 #include  "ray.h"
 
 #include  <sys/types.h>
 
-#ifndef NIX
+#ifndef NON_POSIX
 #ifdef BSD
 #include  <sys/time.h>
 #include  <sys/resource.h>
@@ -24,7 +25,6 @@ static const char RCSid[] = "$Id";
 #include  <time.h>
 #include  <signal.h>
 
-#include  "platform.h"
 #include  "view.h"
 #include  "random.h"
 #include  "paths.h"
@@ -33,8 +33,10 @@ static const char RCSid[] = "$Id";
 #define	 RFTEMPLATE	"rfXXXXXX"
 
 #ifndef SIGCONT
+#ifdef SIGIO     /* XXX can we live without this? */
 #define SIGCONT		SIGIO
 #endif
+#endif
 
 CUBE  thescene;				/* our scene */
 OBJECT	nsceneobjs;			/* number of objects in our scene */
@@ -79,16 +81,16 @@ double	specjitter = 1.;		/* specular sampling jitter *
 
 int  backvis = 1;			/* back face visibility */
 
-int  maxdepth = 6;			/* maximum recursion depth */
-double	minweight = 5e-3;		/* minimum ray weight */
+int  maxdepth = 7;			/* maximum recursion depth */
+double	minweight = 4e-3;		/* minimum ray weight */
 
 char  *ambfile = NULL;			/* ambient file name */
 COLOR  ambval = BLKCOLOR;		/* ambient value */
 int  ambvwt = 0;			/* initial weight for ambient value */
-double	ambacc = 0.2;			/* ambient accuracy */
-int  ambres = 32;			/* ambient resolution */
-int  ambdiv = 128;			/* ambient divisions */
-int  ambssamp = 0;			/* ambient super-samples */
+double	ambacc = 0.15;			/* ambient accuracy */
+int  ambres = 64;			/* ambient resolution */
+int  ambdiv = 512;			/* ambient divisions */
+int  ambssamp = 128;			/* ambient super-samples */
 int  ambounce = 0;			/* ambient bounces */
 char  *amblist[128];			/* ambient include/exclude list */
 int  ambincl = -1;			/* include == 1, exclude == 0 */
@@ -113,9 +115,7 @@ void  report();
 
 double	pixvalue();
 
-#ifdef NIX
-#define  file_exists(f)	(access(f,F_OK)==0)
-#else
+#ifdef RHAS_STAT
 #include  <sys/types.h>
 #include  <sys/stat.h>
 int
@@ -126,6 +126,8 @@ char  *fname;
 	if (stat(fname, &sbuf) < 0) return(0);
 	return((sbuf.st_mode & S_IFREG) != 0);
 }
+#else
+#define  file_exists(f)	(access(f,F_OK)==0)
 #endif
 
 
@@ -135,7 +137,7 @@ int  code;
 {
 	if (code)			/* report status */
 		report();
-#ifndef NIX
+#ifndef NON_POSIX
 	headclean();			/* delete header file */
 	pfclean();			/* clean up persist files */
 #endif
@@ -143,7 +145,7 @@ int  code;
 }
 
 
-#ifndef NIX
+#ifndef NON_POSIX
 void
 report()		/* report progress */
 {
@@ -180,7 +182,7 @@ report()		/* report progress */
 			nrays, pctdone, u/3600., s/3600.,
 			(tlastrept-tstart)/3600., myhostname());
 	eputs(errmsg);
-#ifndef BSD
+#ifdef SIGCONT
 	signal(SIGCONT, report);
 #endif
 }
@@ -241,7 +243,7 @@ char  *pout, *zout, *prvr;
 		setview(&ourview);
 		prvr = fbuf;			/* mark for renaming */
 	}
-	if (pout != NULL & prvr != NULL) {
+	if ((pout != NULL) & (prvr != NULL)) {
 		sprintf(fbuf, pout, seq);
 		if (!strcmp(prvr, fbuf)) {	/* rename */
 			strcpy(fbuf2, fbuf);
@@ -251,7 +253,7 @@ char  *pout, *zout, *prvr;
 				cp--;
 			strcpy(cp, RFTEMPLATE);
 			prvr = mktemp(fbuf2);
-			if (rename(fbuf, prvr) < 0)
+			if (rename(fbuf, prvr) < 0) {
 				if (errno == ENOENT) {	/* ghost file */
 					sprintf(errmsg,
 						"new output file \"%s\"",
@@ -264,6 +266,7 @@ char  *pout, *zout, *prvr;
 						fbuf, prvr);
 					error(SYSTEM, errmsg);
 				}
+			}
 		}
 	}
 	npicts = 0;			/* render sequence */
@@ -292,7 +295,7 @@ char  *pout, *zout, *prvr;
 			dupheader();
 		}
 		hres = hresolu; vres = vresolu; pa = pixaspect;
-		if (prvr != NULL)
+		if (prvr != NULL) {
 			if (viewfile(prvr, &ourview, &rs) <= 0
 					|| rs.rt != PIXSTANDARD) {
 				sprintf(errmsg,
@@ -303,6 +306,7 @@ char  *pout, *zout, *prvr;
 				hres = scanlen(&rs);
 				vres = numscans(&rs);
 			}
+		}
 		if ((cp = setview(&ourview)) != NULL)
 			error(USER, cp);
 		normaspect(viewaspect(&ourview), &pa, &hres, &vres);
@@ -320,6 +324,7 @@ char  *pout, *zout, *prvr;
 		putchar('\n');
 		if (pa < .99 || pa > 1.01)
 			fputaspect(pa, stdout);
+		fputnow(stdout);
 		fputformat(COLRFMT, stdout);
 		putchar('\n');
 		if (zout != NULL)
@@ -341,7 +346,7 @@ FILE  *fp;
 {
 	char  linebuf[256];
 
-	copystruct(&lastview, &ourview);
+	lastview = ourview;
 	while (fgets(linebuf, sizeof(linebuf), fp) != NULL)
 		if (isview(linebuf) && sscanview(&ourview, linebuf) > 0)
 			return(0);
@@ -413,10 +418,10 @@ char  *zfile, *oldfile;
 	pctdone = 100.0*i/vres;
 	if (ralrm > 0)			/* report init stats */
 		report();
-#ifndef	 BSD
+#ifdef SIGCONT
 	else
-#endif
 	signal(SIGCONT, report);
+#endif
 	ypos = vres-1 - i;			/* initialize sampling */
 	if (directvis)
 		init_drawsources(psample);
@@ -442,7 +447,7 @@ char  *zfile, *oldfile;
 		if (directvis)				/* add bitty sources */
 			drawsources(scanbar, zbar, 0, hres, ypos, ystep);
 							/* write it out */
-#ifndef	 BSD
+#ifdef SIGCONT
 		signal(SIGCONT, SIG_IGN);	/* don't interrupt writes */
 #endif
 		for (i = ystep; i > 0; i--) {
@@ -459,13 +464,15 @@ char  *zfile, *oldfile;
 		pctdone = 100.0*(vres-1-ypos)/vres;
 		if (ralrm > 0 && time((time_t *)NULL) >= tlastrept+ralrm)
 			report();
-#ifndef	 BSD
+#ifdef SIGCONT
 		else
 			signal(SIGCONT, report);
 #endif
 	}
 						/* clean up */
+#ifdef SIGCONT
 	signal(SIGCONT, SIG_IGN);
+#endif
 	if (zfd != -1 && write(zfd, (char *)zbar[0], hres*sizeof(float))
 				< hres*sizeof(float))
 		goto writerr;
@@ -486,7 +493,9 @@ alldone:
 	pctdone = 100.0;
 	if (ralrm > 0)
 		report();
+#ifdef SIGCONT
 	signal(SIGCONT, SIG_DFL);
+#endif
 	return;
 writerr:
 	error(SYSTEM, "write error in render");