--- ray/src/px/pcompos.c	1992/06/16 16:48:41	2.5
+++ ray/src/px/pcompos.c	2005/05/25 04:44:26	2.30
@@ -1,9 +1,6 @@
-/* Copyright (c) 1991 Regents of the University of California */
-
 #ifndef lint
-static char SCCSid[] = "$SunId$ LBL";
+static const char	RCSid[] = "$Id: pcompos.c,v 2.30 2005/05/25 04:44:26 greg Exp $";
 #endif
-
 /*
  *  pcompos.c - program to composite pictures.
  *
@@ -11,13 +8,23 @@ static char SCCSid[] = "$SunId$ LBL";
  */
 
 #include  <stdio.h>
+#include  <math.h>
+#include  <time.h>
+#include  <string.h>
 
-#include  "color.h"
+#include "copyright.h"
 
+#include  "platform.h"
+#include  "rtprocess.h"
+#include  "rterror.h"
+#include  "color.h"
 #include  "resolu.h"
 
-#define  MAXFILE	32
+#define	 MAXFILE	512
 
+#define  HASMIN		1
+#define  HASMAX		2
+
 					/* output picture size */
 int  xsiz = 0;
 int  ysiz = 0;
@@ -33,6 +40,10 @@ int  labelht = 24;			/* label height */
 
 int  checkthresh = 0;			/* check threshold value */
 
+char  StandardInput[] = "<stdin>";
+char  Command[] = "<Command>";
+char  Label[] = "<Label>";
+
 char  *progname;
 
 struct {
@@ -40,51 +51,71 @@ struct {
 	FILE  *fp;			/* stream pointer */
 	int  xres, yres;		/* picture size */
 	int  xloc, yloc;		/* anchor point */
-	int  hasmin, hasmax;		/* has threshold values */
+	int  flags;			/* HASMIN, HASMAX */
 	COLR  thmin, thmax;		/* thresholds */
 } input[MAXFILE];		/* our input files */
 
 int  nfile;			/* number of files */
 
+char  ourfmt[LPICFMT+1] = PICFMT;
 int  wrongformat = 0;
 
-FILE  *popen(), *lblopen();
 
+static gethfunc tabputs;
+static void compos(void);
+static int cmpcolr(COLR  c1, COLR  c2);
+static FILE * lblopen(char  *s, int  *xp, int  *yp);
 
-tabputs(s)			/* print line preceded by a tab */
-char  *s;
+
+
+static int
+tabputs(			/* print line preceded by a tab */
+	char	*s,
+	void	*p
+)
 {
 	char  fmt[32];
 
-	if (isformat(s)) {
-		formatval(fmt, s);
-		wrongformat = strcmp(fmt, COLRFMT);
+	if (isheadid(s))
+		return(0);
+	if (formatval(fmt, s)) {
+		if (globmatch(ourfmt, fmt)) {
+			wrongformat = 0;
+			strcpy(ourfmt, fmt);
+		} else
+			wrongformat = 1;
 	} else {
 		putc('\t', stdout);
 		fputs(s, stdout);
 	}
+	return(0);
 }
 
 
-main(argc, argv)
-int  argc;
-char  *argv[];
+int
+main(
+	int  argc,
+	char  *argv[]
+)
 {
 	int  ncolumns = 0;
 	int  autolabel = 0;
-	int  curcol = 0, curx = 0, cury = 0;
+	int  curcol = 0, x0 = 0, curx = 0, cury = 0, spacing = 0;
+	int  xsgn, ysgn;
 	char  *thislabel;
 	int  an;
-
+	SET_DEFAULT_BINARY();
+	SET_FILE_BINARY(stdin);
+	SET_FILE_BINARY(stdout);
 	progname = argv[0];
 
 	for (an = 1; an < argc && argv[an][0] == '-'; an++)
 		switch (argv[an][1]) {
 		case 'x':
-			xmax = xsiz = atoi(argv[++an]);
+			xsiz = atoi(argv[++an]);
 			break;
 		case 'y':
-			ymax = ysiz = atoi(argv[++an]);
+			ysiz = atoi(argv[++an]);
 			break;
 		case 'b':
 			setcolr(bgcolr, atof(argv[an+1]),
@@ -95,6 +126,13 @@ char  *argv[];
 		case 'a':
 			ncolumns = atoi(argv[++an]);
 			break;
+		case 's':
+			spacing = atoi(argv[++an]);
+			break;
+		case 'o':
+			curx = x0 = atoi(argv[++an]);
+			cury = atoi(argv[++an]);
+			break;
 		case 'l':
 			switch (argv[an][2]) {
 			case 'a':
@@ -116,39 +154,50 @@ char  *argv[];
 			goto userr;
 		}
 dofiles:
+	newheader("RADIANCE", stdout);
+	fputnow(stdout);
 	for (nfile = 0; an < argc; nfile++) {
 		if (nfile >= MAXFILE)
 			goto toomany;
-		if (autolabel)
-			thislabel = argv[an];
-		else
-			thislabel = NULL;
-		input[nfile].hasmin = input[nfile].hasmax = 0;
-		while (an < argc && (argv[an][0] == '-' || argv[an][0] == '+'))
+		thislabel = NULL;
+		input[nfile].flags = 0;
+		xsgn = ysgn = '-';
+		while (an < argc && (argv[an][0] == '-' || argv[an][0] == '+'
+				|| argv[an][0] == '=')) {
 			switch (argv[an][1]) {
 			case 't':
 				checkthresh = 1;
 				if (argv[an][0] == '-') {
-					input[nfile].hasmin = 1;
+					input[nfile].flags |= HASMIN;
 					setcolr(input[nfile].thmin,
 							atof(argv[an+1]),
 							atof(argv[an+1]),
 							atof(argv[an+1]));
-				} else {
-					input[nfile].hasmax = 1;
+				} else if (argv[an][0] == '+') {
+					input[nfile].flags |= HASMAX;
 					setcolr(input[nfile].thmax,
 							atof(argv[an+1]),
 							atof(argv[an+1]),
 							atof(argv[an+1]));
-				}
-				an += 2;
+				} else
+					goto userr;
+				an++;
 				break;
 			case 'l':
 				if (strcmp(argv[an], "-l"))
 					goto userr;
-				thislabel = argv[an+1];
-				an += 2;
+				thislabel = argv[++an];
 				break;
+			case '+':
+			case '-':
+			case '0':
+				if (argv[an][0] != '=')
+					goto userr;
+				xsgn = argv[an][1];
+				ysgn = argv[an][2];
+				if (ysgn != '+' && ysgn != '-' && ysgn != '0')
+					goto userr;
+				break;
 			case '\0':
 				if (argv[an][0] == '-')
 					goto getfile;
@@ -156,15 +205,19 @@ dofiles:
 			default:
 				goto userr;
 			}
+			an++;
+		}
 getfile:
 		if (argc-an < (ncolumns ? 1 : 3))
 			goto userr;
+		if (autolabel && thislabel == NULL)
+			thislabel = argv[an];
 		if (!strcmp(argv[an], "-")) {
-			input[nfile].name = "<stdin>";
+			input[nfile].name = StandardInput;
 			input[nfile].fp = stdin;
 		} else {
 			if (argv[an][0] == '!') {
-				input[nfile].name = "<Command>";
+				input[nfile].name = Command;
 				input[nfile].fp = popen(argv[an]+1, "r");
 			} else {
 				input[nfile].name = argv[an];
@@ -180,7 +233,7 @@ getfile:
 		printf("%s:\n", input[nfile].name);
 		getheader(input[nfile].fp, tabputs, NULL);
 		if (wrongformat) {
-			fprintf(stderr, "%s: not a Radiance picture\n",
+			fprintf(stderr, "%s: incompatible input format\n",
 					input[nfile].name);
 			quit(1);
 		}
@@ -193,17 +246,25 @@ getfile:
 		}
 		if (ncolumns > 0) {
 			if (curcol >= ncolumns) {
-				cury = ymax;
-				curx = 0;
+				cury = ymax + spacing;
+				curx = x0;
 				curcol = 0;
 			}
 			input[nfile].xloc = curx;
 			input[nfile].yloc = cury;
-			curx += input[nfile].xres;
+			curx += input[nfile].xres + spacing;
 			curcol++;
 		} else {
 			input[nfile].xloc = atoi(argv[an++]);
+			if (xsgn == '+')
+				input[nfile].xloc -= input[nfile].xres;
+			else if (xsgn == '0')
+				input[nfile].xloc -= input[nfile].xres/2;
 			input[nfile].yloc = atoi(argv[an++]);
+			if (ysgn == '+')
+				input[nfile].yloc -= input[nfile].yres;
+			else if (ysgn == '0')
+				input[nfile].yloc -= input[nfile].yres/2;
 		}
 		if (input[nfile].xloc < xmin)
 			xmin = input[nfile].xloc;
@@ -216,8 +277,10 @@ getfile:
 		if (thislabel != NULL) {
 			if (++nfile >= MAXFILE)
 				goto toomany;
-			input[nfile].name = "<Label>";
-			input[nfile].hasmin = input[nfile].hasmax = 0;
+			input[nfile].name = Label;
+			input[nfile].flags = 0;
+			input[nfile].xres = input[nfile-1].xres;
+			input[nfile].yres = labelht;
 			if ((input[nfile].fp = lblopen(thislabel,
 					&input[nfile].xres,
 					&input[nfile].yres)) == NULL)
@@ -229,11 +292,16 @@ getfile:
 	}
 	if (xsiz <= 0)
 		xsiz = xmax;
+	else if (xsiz > xmax)
+		xmax = xsiz;
 	if (ysiz <= 0)
 		ysiz = ymax;
+	else if (ysiz > ymax)
+		ymax = ysiz;
 					/* add new header info. */
 	printargs(argc, argv, stdout);
-	fputformat(COLRFMT, stdout);
+	if (strcmp(ourfmt, PICFMT))
+		fputformat(ourfmt, stdout);	/* print format if known */
 	putchar('\n');
 	fprtresolu(xsiz, ysiz, stdout);
 
@@ -241,9 +309,10 @@ getfile:
 	
 	quit(0);
 userr:
-	fprintf(stderr, "Usage: %s [-x xr][-y yr][-b r g b][-a n][-la][-lh h] ",
+	fprintf(stderr,
+	"Usage: %s [-x xr][-y yr][-b r g b][-a n][-s p][-o x0 y0][-la][-lh h] ",
 			progname);
-	fprintf(stderr, "[-t min1][+t max1][-l lab] pic1 x1 y1 ..\n");
+	fprintf(stderr, "[-t min1][+t max1][-l lab][=SS] pic1 x1 y1 ..\n");
 	quit(1);
 toomany:
 	fprintf(stderr, "%s: only %d files and labels allowed\n",
@@ -252,10 +321,12 @@ toomany:
 labelerr:
 	fprintf(stderr, "%s: error opening label\n", progname);
 	quit(1);
+	return 1; /* pro forma return */
 }
 
 
-compos()				/* composite pictures */
+static void
+compos(void)				/* composite pictures */
 {
 	COLR  *scanin, *scanout;
 	int  y;
@@ -292,10 +363,10 @@ compos()				/* composite pictures */
 				if (x > xsiz)
 					x = xsiz;
 				for (x--; x >= 0 && x >= input[i].xloc; x--) {
-					if (input[i].hasmin &&
+					if (input[i].flags & HASMIN &&
 					cmpcolr(scanin[x], input[i].thmin) <= 0)
 						continue;
-					if (input[i].hasmax &&
+					if (input[i].flags & HASMAX &&
 					cmpcolr(scanin[x], input[i].thmax) >= 0)
 						continue;
 					copycolr(scanout[x], scanin[x]);
@@ -309,6 +380,11 @@ compos()				/* composite pictures */
 			quit(1);
 		}
 	}
+					/* read remainders from streams */
+	for (i = 0; i < nfile; i++)
+		if (input[i].name[0] == '<')
+			while (getc(input[i].fp) != EOF)
+				;
 	return;
 memerr:
 	perror(progname);
@@ -316,29 +392,33 @@ memerr:
 }
 
 
-int
-cmpcolr(c1, c2)			/* compare two colr's (improvisation) */
-register COLR  c1, c2;
+static int
+cmpcolr(			/* compare two colr's (improvisation) */
+	register COLR  c1,
+	register COLR  c2
+)
 {
 	register int  i, j;
 
 	j = 4;				/* check exponents first! */
 	while (j--)
-		if (i = c1[j] - c2[j])
+		if ( (i = c1[j] - c2[j]) )
 			return(i);
 	return(0);
 }
 
 
-FILE *
-lblopen(s, xp, yp)		/* open pipe to label generator */
-char  *s;
-int  *xp, *yp;
+static FILE *
+lblopen(		/* open pipe to label generator */
+	char  *s,
+	int  *xp,
+	int  *yp
+)
 {
-	char  com[128];
+	char  com[PATH_MAX];
 	FILE  *fp;
 
-	sprintf(com, "psign -s -.2 -h %d '%.30s'", labelht, s);
+	sprintf(com, "psign -s -.15 -a 2 -x %d -y %d '%.90s'", *xp, *yp, s);
 	if ((fp = popen(com, "r")) == NULL)
 		return(NULL);
 	if (checkheader(fp, COLRFMT, NULL) < 0)
@@ -352,8 +432,16 @@ err:
 }
 
 
+void
 quit(code)		/* exit gracefully */
 int  code;
 {
+	register int  i;
+				/* close input files */
+	for (i = 0; i < nfile; i++)
+		if (input[i].name == Command || input[i].name == Label)
+			pclose(input[i].fp);
+		else
+			fclose(input[i].fp);
 	exit(code);
 }