--- ray/src/common/color.c	1989/05/11 22:15:57	1.4
+++ ray/src/common/color.c	1989/09/13 16:35:14	1.5
@@ -107,6 +107,52 @@ register COLOR  rgbcolor, ciecolor;
 #endif
 
 
+fputresolu(ord, xres, yres, fp)		/* put x and y resolution */
+register int  ord;
+int  xres, yres;
+FILE  *fp;
+{
+	if (ord&YMAJOR)
+		fprintf(fp, "%cY %d %cX %d\n",
+				ord&YDECR ? '-' : '+', yres,
+				ord&XDECR ? '-' : '+', xres);
+	else
+		fprintf(fp, "%cX %d %cY %d\n",
+				ord&XDECR ? '-' : '+', xres,
+				ord&YDECR ? '-' : '+', yres);
+}
+
+
+fgetresolu(xrp, yrp, fp)		/* get x and y resolution */
+int  *xrp, *yrp;
+FILE  *fp;
+{
+	char  buf[64], *xndx, *yndx;
+	register char  *cp;
+	register int  ord;
+
+	if (fgets(buf, sizeof(buf), fp) == NULL)
+		return(-1);
+	xndx = yndx = NULL;
+	for (cp = buf+1; *cp; cp++)
+		if (*cp == 'X')
+			xndx = cp;
+		else if (*cp == 'Y')
+			yndx = cp;
+	if (xndx == NULL || yndx == NULL)
+		return(-1);
+	ord = 0;
+	if (xndx > yndx) ord |= YMAJOR;
+	if (xndx[-1] == '-') ord |= XDECR;
+	if (yndx[-1] == '-') ord |= YDECR;
+	if ((*xrp = atoi(xndx+1)) <= 0)
+		return(-1);
+	if ((*yrp = atoi(yndx+1)) <= 0)
+		return(-1);
+	return(ord);
+}
+
+
 fwritecolrs(scanline, len, fp)		/* write out a colr scanline */
 register COLR  *scanline;
 int  len;