--- ray/src/util/rpiece.c	2003/06/08 12:03:11	2.38
+++ ray/src/util/rpiece.c	2003/10/20 16:01:55	2.42
@@ -1,10 +1,11 @@
 #ifndef lint
-static const char	RCSid[] = "$Id: rpiece.c,v 2.38 2003/06/08 12:03:11 schorsch Exp $";
+static const char	RCSid[] = "$Id: rpiece.c,v 2.42 2003/10/20 16:01:55 greg Exp $";
 #endif
 /*
  * Generate sections of a picture.
  */
  
+#include "platform.h"
 #include "standard.h"
 
 #ifndef F_SETLKW
@@ -20,8 +21,10 @@ char *argv[];
 #else
 
 #include <signal.h>
+
 #include "color.h"
 #include "view.h"
+#include "rtprocess.h"
 
 #ifndef NFS
 #define  NFS			1
@@ -49,7 +52,6 @@ extern char  *strerror();
 				/* rpict command */
 char  *rpargv[128] = {"rpict", "-S", "1"};
 int  rpargc = 3;
-int  rpd[3];
 FILE  *torp, *fromrp;
 COLR  *pbuf;
 				/* our view parameters */
@@ -210,6 +212,7 @@ char  **av;
 	char  *err;
 	FILE  *fp;
 	int  hr, vr;
+	SUBPROC  rpd; /* since we don't close_process(), this can be local */
 					/* set up view */
 	if ((err = setview(&ourview)) != NULL) {
 		fprintf(stderr, "%s: %s\n", progname, err);
@@ -268,12 +271,12 @@ char  **av;
 		goto filerr;
 	dolock(outfd, F_UNLCK);
 					/* start rpict process */
-	if (open_process(rpd, rpargv) <= 0) {
+	if (open_process(&rpd, rpargv) <= 0) {
 		fprintf(stderr, "%s: cannot start %s\n", progname, rpargv[0]);
 		exit(1);
 	}
-	if ((fromrp = fdopen(rpd[0], "r")) == NULL ||
-			(torp = fdopen(rpd[1], "w")) == NULL) {
+	if ((fromrp = fdopen(rpd.r, "r")) == NULL ||
+			(torp = fdopen(rpd.w, "w")) == NULL) {
 		fprintf(stderr, "%s: cannot open stream to %s\n",
 				progname, rpargv[0]);
 		exit(1);
@@ -399,7 +402,7 @@ rpiece()			/* render picture piece by piece */
 	VIEW  pview;
 	int  xorg, yorg;
 					/* compute view parameters */
-	copystruct(&pview, &ourview);
+	pview = ourview;
 	switch (ourview.type) {
 	case VT_PER:
 		pview.horiz = 2.*180./PI*atan(
@@ -450,7 +453,7 @@ int  xpos, ypos;
 	int  hr, vr;
 	register int  y;
 				/* check bounds */
-	if (xpos < 0 | ypos < 0 | xpos >= hmult | ypos >= vmult) {
+	if ((xpos < 0) | (ypos < 0) | (xpos >= hmult) | (ypos >= vmult)) {
 		fprintf(stderr, "%s: requested piece (%d,%d) out of range\n",
 				progname, xpos, ypos);
 		exit(cleanup(1));
@@ -458,7 +461,7 @@ int  xpos, ypos;
 				/* check header from rpict */
 	guard_io();
 	getheader(fromrp, NULL, NULL);
-	if (!fscnresolu(&hr, &vr, fromrp) || hr != hres | vr != vres) {
+	if (!fscnresolu(&hr, &vr, fromrp) || (hr != hres) | (vr != vres)) {
 		fprintf(stderr, "%s: resolution mismatch from %s\n",
 				progname, rpargv[0]);
 		exit(cleanup(1));
@@ -503,7 +506,7 @@ int  xpos, ypos;
 		filerr("lock");
 #endif
 				/* write new piece to file */
-	if (lseek(outfd, (off_t)fls.l_start, 0) < 0)
+	if (lseek(outfd, (off_t)fls.l_start, SEEK_SET) < 0)
 		filerr("seek");
 	if (hmult == 1) {
 		if (writebuf(outfd, (char *)pbuf,
@@ -516,7 +519,7 @@ int  xpos, ypos;
 				filerr("write");
 			if (y < vr-1 && lseek(outfd,
 					(off_t)(hmult-1)*hr*sizeof(COLR),
-					1) < 0)
+					SEEK_CUR) < 0)
 				filerr("seek");
 		}
 #if NFS