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root/Development/ray/src/rt/text.c

Comparing ray/src/rt/text.c (file contents):
Revision 2.1 by greg, Tue Nov 12 17:10:02 1991 UTC vs.
Revision 2.3 by greg, Tue Jun 16 13:24:23 1992 UTC

#	Line 14 | Line 14 | static char SCCSid[] = "$SunId$ LBL";
14
15		#include  "otypes.h"
16
17	+	#include  "font.h"
18	+
19		/*
20		*      A text pattern is specified as the text (a file or line),
21		*  the upper left anchor point, the right motion vector, the down
#	Line 55 | Line 57 | static char SCCSid[] = "$SunId$ LBL";
57		#define  fndx(m)        ((m)->otype==MIX_TEXT ? 2 : 0)
58		#define  tndx(m)        ((m)->otype==MIX_TEXT ? 3 : 1)
59
58	–	extern char  *libpath;                  /* library search path */
59	–
60	–	typedef unsigned char  GLYPH;
61	–
62	–	typedef struct font {
63	–	GLYPH  *fg[256];                /* font glyphs */
64	–	char  *name;                    /* font file name */
65	–	struct font  *next;             /* next font in list */
66	–	}  FONT;
67	–
60		typedef struct tline {
61		struct tline  *next;            /* pointer to next line */
62		/* followed by the string */
#	Line 78 | Line 70 | typedef struct {
70		TLINE  tl;                      /* line list */
71		}  TEXT;
72
73	+	extern char  *libpath;
74	+
75		extern char  *fgetword();
76
77		TEXT  *gettext();
78
79		TLINE  *tlalloc();
80
87	–	FONT  *getfont();
81
89	–	static FONT  *fontlist = NULL;          /* our font list */
90	–
91	–
82		text(m, r)
83		register OBJREC  *m;
84		RAY  *r;
#	Line 271 | Line 261 | OBJREC  *m;
261		break;
262		if (tlp == NULL || col >= strlen(TLSTR(tlp)))
263		return(0);
264	<	return(inglyph(x, y, tp->f->fg[TLSTR(tlp)[col]]));
264	>	return(inglyph(x, y, tp->f->fg[TLSTR(tlp)[col]&0xff]));
265		}
266
267
278	–	FONT *
279	–	getfont(fname)                          /* return font fname */
280	–	char  *fname;
281	–	{
282	–	char  buf[16];
283	–	FILE  *fp;
284	–	char  *pathname, *err;
285	–	int  gn, ngv, gv;
286	–	register GLYPH  *g;
287	–	register FONT  *f;
288	–
289	–	for (f = fontlist; f != NULL; f = f->next)
290	–	if (!strcmp(f->name, fname))
291	–	return(f);
292	–	/* load the font file */
293	–	if ((pathname = getpath(fname, libpath, R_OK)) == NULL) {
294	–	sprintf(errmsg, "cannot find font file \"%s\"", fname);
295	–	error(USER, errmsg);
296	–	}
297	–	f = (FONT *)calloc(1, sizeof(FONT));
298	–	if (f == NULL)
299	–	goto memerr;
300	–	f->name = savestr(fname);
301	–	if ((fp = fopen(pathname, "r")) == NULL) {
302	–	sprintf(errmsg, "cannot open font file \"%s\"",
303	–	pathname);
304	–	error(SYSTEM, errmsg);
305	–	}
306	–	while (fgetword(buf,sizeof(buf),fp) != NULL) {  /* get each glyph */
307	–	if (!isint(buf))
308	–	goto nonint;
309	–	gn = atoi(buf);
310	–	if (gn < 0 || gn > 255) {
311	–	err = "illegal";
312	–	goto fonterr;
313	–	}
314	–	if (f->fg[gn] != NULL) {
315	–	err = "duplicate";
316	–	goto fonterr;
317	–	}
318	–	if (fgetword(buf,sizeof(buf),fp) == NULL || !isint(buf) ||
319	–	(ngv = atoi(buf)) < 0 || ngv > 255) {
320	–	err = "bad # vertices for";
321	–	goto fonterr;
322	–	}
323	–	g = (GLYPH *)malloc((2*ngv+1)*sizeof(GLYPH));
324	–	if (g == NULL)
325	–	goto memerr;
326	–	f->fg[gn] = g;
327	–	*g++ = ngv;
328	–	ngv *= 2;
329	–	while (ngv--) {
330	–	if (fgetword(buf,sizeof(buf),fp) == NULL ||
331	–	!isint(buf) ||
332	–	(gv = atoi(buf)) < 0 || gv > 255) {
333	–	err = "bad vertex for";
334	–	goto fonterr;
335	–	}
336	–	*g++ = gv;
337	–	}
338	–	}
339	–	fclose(fp);
340	–	f->next = fontlist;
341	–	return(fontlist = f);
342	–	nonint:
343	–	sprintf(errmsg, "non-integer in font file \"%s\"", pathname);
344	–	error(USER, errmsg);
345	–	fonterr:
346	–	sprintf(errmsg, "%s character (%d) in font file \"%s\"",
347	–	err, gn, pathname);
348	–	error(USER, errmsg);
349	–	memerr:
350	–	error(SYSTEM, "out of memory in fontglyph");
351	–	}
352	–
353	–
268		inglyph(x, y, gl)               /* (x,y) within font glyph gl? */
269		double  x, y;
270	<	GLYPH  *gl;
270	>	register GLYPH  *gl;
271		{
272		int  n, ncross;
273		int  xlb, ylb;
274	<	register GLYPH  *p0, *p1;
274	>	register GORD  *p0, *p1;
275
276		if (gl == NULL)
277		return(0);
#	Line 365 | Line 279 | GLYPH  *gl;
279		y *= 256.0;
280		xlb = x + 0.5;
281		ylb = y + 0.5;
282	<	n = *gl++;                      /* get # of vertices */
283	<	p0 = gl + 2*(n-1);              /* connect last to first */
284	<	p1 = gl;
282	>	if (gl->left > xlb || gl->right <= xlb ||
283	>	gl->bottom > ylb || gl->top <= ylb)
284	>	return(0);      /* outside extent */
285	>	n = gl->nverts;                 /* get # of vertices */
286	>	p0 = gvlist(gl) + 2*(n-1);      /* connect last to first */
287	>	p1 = gvlist(gl);
288		ncross = 0;
289		/* positive x axis cross test */
290		while (n--) {

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