--- ray/src/rt/text.c	1992/06/25 12:05:10	2.6
+++ ray/src/rt/text.c	1996/06/22 09:48:52	2.16
@@ -1,4 +1,4 @@
-/* Copyright (c) 1991 Regents of the University of California */
+/* Copyright (c) 1995 Regents of the University of California */
 
 #ifndef lint
 static char SCCSid[] = "$SunId$ LBL";
@@ -6,8 +6,6 @@ static char SCCSid[] = "$SunId$ LBL";
 
 /*
  *  text.c - functions for text patterns and mixtures.
- *
- *     11/12/86
  */
 
 #include  "ray.h"
@@ -45,8 +43,10 @@ static char SCCSid[] = "$SunId$ LBL";
  *		[spacing]
  *
  *  Colortext is identical, except colors are given rather than
- *  brightnesses.  Mixtext has foreground and background modifiers:
+ *  brightnesses.
  *
+ *  Mixtext has foreground and background modifiers:
+ *
  *	modifier mixtext id
  *	4+ foremod backmod fontfile text..
  *	0
@@ -77,7 +77,7 @@ typedef struct {
 	TLINE  tl;			/* line list */
 }  TEXT;
 
-extern char  *libpath;
+extern char  *getlibpath();
 
 extern char  *fgetword();
 
@@ -86,7 +86,7 @@ TEXT  *gettext();
 TLINE  *tlalloc();
 
 
-text(m, r)
+do_text(m, r)
 register OBJREC  *m;
 RAY  *r;
 {
@@ -109,7 +109,11 @@ RAY  *r;
 			sprintf(errmsg, "undefined modifier \"%s\"", modname);
 			objerror(m, USER, errmsg);
 		}
-		raytexture(r, omod);
+		if (rayshade(r, omod)) {
+			if (m->omod != OVOID)
+				objerror(m, USER, "inappropriate modifier");
+			return(1);
+		}
 	} else if (m->otype == PAT_BTEXT) {
 		if (foreground)
 			scalecolor(r->pcol, m->oargs.farg[9]);
@@ -127,6 +131,7 @@ RAY  *r;
 					m->oargs.farg[14]);
 		multcolor(r->pcol, cval);
 	}
+	return(0);
 }
 
 
@@ -142,7 +147,6 @@ char  *s;
 	if ((tl=(TLINE *)malloc(sizeof(TLINE)+siz)) == NULL ||
 			(tl->spc=(short *)malloc(siz*sizeof(short))) == NULL)
 		error(SYSTEM, "out of memory in tlalloc");
-	tl->spc = NULL;
 	tl->next = NULL;
 	strcpy(TLSTR(tl), s);
 	return(tl);
@@ -155,7 +159,7 @@ register OBJREC  *tm;
 {
 #define  R	(tm->oargs.farg+3)
 #define  D	(tm->oargs.farg+6)
-	extern char  *strcpy(), *fgets();
+	extern char  *strcpy();
 	FVECT  DxR;
 	double  d;
 	FILE  *fp;
@@ -171,7 +175,7 @@ register OBJREC  *tm;
 	if (tm->oargs.nsargs - tndx(tm) < 1 || tm->oargs.nfargs < sndx(tm))
 		objerror(tm, USER, "bad # arguments");
 	if ((t = (TEXT *)malloc(sizeof(TEXT))) == NULL)
-		goto memerr;
+		error(SYSTEM, "out of memory in gettext");
 						/* compute vectors */
 	fcross(DxR, D, R);
 	fcross(t->right, DxR, D);
@@ -196,7 +200,7 @@ register OBJREC  *tm;
 		tlp = tlp->next;
 	} else {				/* text file */
 		if ((s = getpath(tm->oargs.sarg[tndx(tm)],
-				libpath, R_OK)) == NULL) {
+				getlibpath(), R_OK)) == NULL) {
 			sprintf(errmsg, "cannot find text file \"%s\"",
 					tm->oargs.sarg[tndx(tm)]);
 			error(USER, errmsg);
@@ -220,12 +224,9 @@ register OBJREC  *tm;
 						/* compute character spacing */
 	i = sndx(tm);
 	d = i < tm->oargs.nfargs ? tm->oargs.farg[i] : 0.0;
-	i = d * 256.0;
+	i = d * 255.0;
 	t->tl.width = 0;
 	for (tlp = t->tl.next; tlp != NULL; tlp = tlp->next) {
-		if ((tlp->spc = (short *)malloc(
-				(strlen(TLSTR(tlp))+1)*sizeof(short))) == NULL)
-			goto memerr;
 		if (i < 0)
 			tlp->width = squeeztext(tlp->spc, TLSTR(tlp), t->f, -i);
 		else if (i > 0)
@@ -238,8 +239,6 @@ register OBJREC  *tm;
 						/* we're done */
 	tm->os = (char *)t;
 	return(t);
-memerr:
-	error(SYSTEM, "out of memory in gettext");
 #undef  R
 #undef  D
 }
@@ -254,7 +253,8 @@ OBJREC  *m;
 	tp = (TEXT *)m->os;
 	if (tp == NULL)
 		return;
-	for (tlp = tp->tl.next; tlp != NULL; tlp = tlp->next) {
+	while ((tlp = tp->tl.next) != NULL) {
+		tp->tl.next = tlp->next;
 		free((char *)tlp->spc);
 		free((char *)tlp);
 	}
@@ -267,7 +267,6 @@ intext(p, m)			/* check to see if p is in text glyph *
 FVECT  p;
 OBJREC  *m;
 {
-	extern double  fabs();
 	register TEXT  *tp;
 	register TLINE  *tlp;
 	FVECT  v;
@@ -281,15 +280,15 @@ OBJREC  *m;
 	x = DOT(v, tp->right);
 	i = sndx(m);
 	if (i < m->oargs.nfargs)
-		x *= tp->f->mwidth + 256.*fabs(m->oargs.farg[i]);
+		x *= tp->f->mwidth + 255.*fabs(m->oargs.farg[i]);
 	else
-		x *= 256.;
+		x *= 255.;
 	h = x;
 	i = y = DOT(v, tp->down);
 	if (x < 0.0 || y < 0.0)
 		return(0);
 	x -= (double)h;
-	y = ((i+1) - y)*256.;
+	y = ((i+1) - y)*255.;
 				/* find the line position */
 	for (tlp = tp->tl.next; tlp != NULL; tlp = tlp->next)
 		if (--i < 0)
@@ -297,7 +296,7 @@ OBJREC  *m;
 	if (tlp == NULL || h >= tlp->width)
 		return(0);
 	for (i = 0; (h -= tlp->spc[i]) >= 0; i++)
-		if (h < 256 && inglyph(h+x, y,
+		if (h < 255 && inglyph(h+x, y,
 				tp->f->fg[TLSTR(tlp)[i]&0xff]))
 			return(1);
 	return(0);
@@ -305,7 +304,7 @@ OBJREC  *m;
 
 
 inglyph(x, y, gl)		/* (x,y) within font glyph gl? */
-double  x, y;		/* real coordinates in range [0,256) */
+double  x, y;		/* real coordinates in range [0,255) */
 register GLYPH  *gl;
 {
 	int  n, ncross;