src/px/psign.c

/* Copyright (c) 1991 Regents of the University of California */

#ifndef lint
static char SCCSid[] = "$SunId$ LBL";
#endif

/*
 *  psign.c - produce picture from text.
 *
 *      7/1/87
 */

#include  "standard.h"

#include  "color.h"

#include  "font.h"

#define  SSS                    2       /* super-sample size */

#define  MAXLINE                512     /* longest allowable line */

#ifndef  DEFPATH
#define  DEFPATH                ":/usr/local/lib/ray"
#endif
#ifndef  ULIBVAR
#define  ULIBVAR                "RAYPATH"
#endif

char  *fontfile = "helvet.fnt";         /* our font file */

COLR  bgcolr = WHTCOLR;                 /* background color */
COLR  fgcolr = BLKCOLR;                 /* foreground color */

int  direct = 'r';                      /* direction (right, up, left, down) */

int  cheight = 32;                      /* character height */
double  aspect = 1.67;                  /* height/width character aspect */
int  cwidth;                            /* computed character width */

unsigned char  *ourbitmap;              /* our output bitmap */
int  xsiz, ysiz;                        /* bitmap dimensions */
int  xdim;                              /* size of horizontal scan (bytes) */

#define  bitop(x,y,op)          (ourbitmap[(y)*xdim+((x)>>3)] op (1<<((x)&7)))
#define  tstbit(x,y)            bitop(x,y,&)
#define  setbit(x,y)            bitop(x,y,|=)
#define  clrbit(x,y)            bitop(x,y,&=~)
#define  tglbit(x,y)            bitop(x,y,^=)

FONT  *ourfont;                         /* our font */

char  *libpath;                         /* library search path */

typedef struct line {
        char  *s;               /* line w/o LF */
        short  *sp;             /* character spacing */
        struct line  *next;     /* next line up */
} LINE;

LINE  *ourtext;                         /* our text */
int  nlines, maxline;                   /* text dimensions */
int  maxwidth;                          /* maximum line width (dvi) */

extern char  *getenv();
extern char  *malloc(), *calloc();


main(argc, argv)
int  argc;
char  *argv[];
{
        int  an;

        for (an = 1; an < argc && argv[an][0] == '-'; an++)
                switch (argv[an][1]) {
                case 'c':                       /* color */
                        switch (argv[an][2]) {
                        case 'f':                       /* foreground */
                                setcolr(fgcolr, atof(argv[an+1]),
                                                atof(argv[an+2]),
                                                atof(argv[an+3]));
                                an += 3;
                                break;
                        case 'b':                       /* background */
                                setcolr(bgcolr, atof(argv[an+1]),
                                                atof(argv[an+2]),
                                                atof(argv[an+3]));
                                an += 3;
                                break;
                        default:
                                goto unkopt;
                        }
                        break;
                case 'f':                       /* font */
                        fontfile = argv[++an];
                        break;
                case 'd':                       /* direction */
                        switch (argv[an][2]) {
                        case 'r':                       /* right */
                        case 'u':                       /* up */
                        case 'l':                       /* left */
                        case 'd':                       /* down */
                                direct = argv[an][2];
                                break;
                        default:
                                goto unkopt;
                        }
                        break;
                case 'h':                       /* height of characters */
                        cheight = atoi(argv[++an]);
                        break;
                case 'a':                       /* aspect ratio */
                        aspect = atof(argv[++an]);
                        break;
                default:;
unkopt:
                        fprintf(stderr, "%s: unknown option: %s\n",
                                        argv[0], argv[an]);
                        exit(1);
                }
                                        /* load font file */
        if ((libpath = getenv(ULIBVAR)) == NULL)
                libpath = DEFPATH;
        ourfont = getfont(fontfile);
                                        /* get text */
        if (an == argc)
                gettext(stdin);
        else
                arg_text(argc-an, argv+an);

                                        /* create bit map */
        makemap();
                                        /* convert text to bitmap */
        maptext();
                                        /* print header */
        printargs(argc, argv, stdout);
        fputformat(COLRFMT, stdout);
        putchar('\n');
                                        /* write out bitmap */
        writemap(stdout);

        exit(0);
}


makemap()                       /* create the bit map */
{
        cwidth = cheight/aspect + 0.5;
        if (direct == 'r' || direct == 'l') {
                xsiz = maxline*cwidth;
                ysiz = nlines*cheight;
        } else {                        /* reverse orientation */
                xsiz = nlines*cheight;
                ysiz = maxline*cwidth;
        }
        xdim = (xsiz+7)/8;
        ourbitmap = (BYTE *)calloc(ysiz, xdim);
        if (ourbitmap == NULL) {
                fprintf(stderr, "out of memory in makemap\n");
                exit(1);
        }
}


gettext(fp)                     /* get text from a file */
FILE  *fp;
{
        char  *fgets();
        char  buf[MAXLINE];
        register LINE  *curl;
        int  len;

        maxline = 0;
        maxwidth = 0;
        nlines = 0;
        while (fgets(buf, MAXLINE, fp) != NULL) {
                curl = (LINE *)malloc(sizeof(LINE));
                if (curl == NULL)
                        goto memerr;
                len = strlen(buf);
                curl->s = malloc(len);
                curl->sp = (short *)malloc(sizeof(short)*len--);
                if (curl->s == NULL | curl->sp == NULL)
                        goto memerr;
                if (len > maxline)
                        maxline = len;
                strncpy(curl->s, buf, len);
                curl->s[len] = '\0';
len = uniftext(curl->sp, curl->s, ourfont);
                if (len > maxwidth)
                        maxwidth = len;
                curl->next = ourtext;
                ourtext = curl;
                nlines++;
        }
        return;
memerr:
        fprintf(stderr, "out of memory in gettext\n");
        exit(1);
}


arg_text(ac, av)                        /* get text from arguments */
int  ac;
char  *av[];
{
        register char  *cp;

        ourtext = (LINE *)malloc(sizeof(LINE));
        if (ourtext == NULL)
                goto memerr;
        ourtext->s = malloc(MAXLINE);
        if (ourtext->s == NULL)
                goto memerr;
        for (cp = ourtext->s; ac-- > 0; av++) {
                strcpy(cp, *av);
                cp += strlen(*av);
                *cp++ = ' ';
        }
        *--cp = '\0';
        ourtext->next = NULL;
        maxline = strlen(ourtext->s);
        ourtext->sp = (short *)malloc(sizeof(short)*(maxline+1));
        if (ourtext->sp == NULL)
                goto memerr;
maxwidth = uniftext(ourtext->sp, ourtext->s, ourfont);
        nlines = 1;
        return;
memerr:
        fprintf(stderr, "out of memory in arg_text\n");
        exit(1);
}


maptext()                       /* map our text */
{
        register LINE  *curl;
        int  l, len;
        register int  i, c;

        for (l = 0, curl = ourtext; curl != NULL; l += 256, curl = curl->next) {
                len = strlen(curl->s); c = 0;
                for (i = 0; i < len; i++) {
                        c += curl->sp[i];
                        mapglyph(ourfont->fg[curl->s[i]&0xff], c, l);
                }
        }
}


mapglyph(gl, tx0, ty0)          /* convert a glyph */
GLYPH  *gl;
int  tx0, ty0;
{
        int  n;
        register GORD  *gp;
        int  p0[2], p1[2];

        if (gl == NULL)
                return;

        n = gl->nverts;
        gp = gvlist(gl);
        mapcoord(p0, gp[2*n-2]+tx0, gp[2*n-1]+ty0);
        while (n--) {
                mapcoord(p1, gp[0]+tx0, gp[1]+ty0);
                mapedge(p0[0], p0[1], p1[0]-p0[0], p1[1]-p0[1]);
                p0[0] = p1[0]; p0[1] = p1[1];
                gp += 2;
        }
}


mapcoord(p, tx, ty)             /* map text to picture coordinates */
int  p[2], tx, ty;
{
        tx = (long)tx*cwidth >> 8;
        ty = (long)ty*cheight >> 8;

        switch (direct) {
        case 'r':                       /* right */
                p[0] = tx;
                p[1] = ty;
                return;
        case 'u':                       /* up */
                p[0] = xsiz-1-ty;
                p[1] = tx;
                return;
        case 'l':                       /* left */
                p[0] = xsiz-1-tx;
                p[1] = ysiz-1-ty;
                return;
        case 'd':                       /* down */
                p[0] = ty;
                p[1] = ysiz-1-tx;
                return;
        }
}


mapedge(x, y, run, rise)                /* map an edge */
register int  x, y;
int  run, rise;
{
        int  xstep;
        int  rise2, run2;
        int  n;

        if (rise == 0)
                return;
                                                /* always draw up */
        if (rise < 0) {
                x += run;
                y += rise;
                rise = -rise;
                run = -run;
        }
        if (run < 0) {
                xstep = -1;
                run = -run;
        } else
                xstep = 1;
        n = rise;
        run2 = rise2 = 0;
        while (n)
                if (rise2 >= run2) {
                        tglbit(x, y);
                        n--;
                        y++;
                        run2 += run;
                } else {
                        x += xstep;
                        rise2 += rise;
                }
}


writemap(fp)                    /* write out bitmap */
FILE  *fp;
{
        COLR  *scanout;
        int  y;
        register int  x;
        register int  inglyph;

        fprintf(fp, "-Y %d +X %d\n", ysiz, xsiz);

        scanout = (COLR *)malloc(xsiz*sizeof(COLR));
        if (scanout == NULL) {
                fprintf(stderr, "out of memory in writemap\n");
                exit(1);
        }
        for (y = ysiz-1; y >= 0; y--) {
                inglyph = 0;
                for (x = 0; x < xsiz; x++) {
                        if (tstbit(x, y))
                                inglyph ^= 1;
                        if (inglyph)
                                copycolr(scanout[x], fgcolr);
                        else
                                copycolr(scanout[x], bgcolr);
                }
                if (fwritecolrs(scanout, xsiz, fp) < 0) {
                        fprintf(stderr, "write error in writemap\n");
                        exit(1);
                }
        }
        free((char *)scanout);
}
Revision:	2.4
Committed:	Tue Jun 16 15:34:47 1992 UTC (31 years, 10 months ago) by greg
Content type:	text/plain
Branch:	MAIN
Changes since 2.3:	+30 -16 lines
Log Message:	initial fixes to getfont move
#	User	Rev	Content
1	greg	1.3	/* Copyright (c) 1991 Regents of the University of California */
2	greg	1.1
3			#ifndef lint
4			static char SCCSid[] = "$SunId$ LBL";
5			#endif
6
7			/*
8			* psign.c - produce picture from text.
9			*
10			* 7/1/87
11			*/
12
13	greg	2.3	#include "standard.h"
14	greg	1.1
15			#include "color.h"
16
17	greg	2.3	#include "font.h"
18
19	greg	2.4	#define SSS 2 /* super-sample size */
20
21	greg	1.1	#define MAXLINE 512 /* longest allowable line */
22
23	greg	2.3	#ifndef DEFPATH
24			#define DEFPATH ":/usr/local/lib/ray"
25			#endif
26			#ifndef ULIBVAR
27			#define ULIBVAR "RAYPATH"
28			#endif
29
30	greg	1.2	char fontfile = "helvet.fnt"; / our font file */
31	greg	1.1
32			COLR bgcolr = WHTCOLR; /* background color */
33			COLR fgcolr = BLKCOLR; /* foreground color */
34
35			int direct = 'r'; /* direction (right, up, left, down) */
36
37			int cheight = 32; /* character height */
38			double aspect = 1.67; /* height/width character aspect */
39			int cwidth; /* computed character width */
40
41			unsigned char ourbitmap; / our output bitmap */
42			int xsiz, ysiz; /* bitmap dimensions */
43			int xdim; /* size of horizontal scan (bytes) */
44
45			#define bitop(x,y,op) (ourbitmap[(y)*xdim+((x)>>3)] op (1<<((x)&7)))
46			#define tstbit(x,y) bitop(x,y,&)
47			#define setbit(x,y) bitop(x,y,\|=)
48			#define clrbit(x,y) bitop(x,y,&=~)
49			#define tglbit(x,y) bitop(x,y,^=)
50
51	greg	2.3	FONT ourfont; / our font */
52	greg	1.1
53	greg	2.3	char libpath; / library search path */
54
55	greg	1.1	typedef struct line {
56			char s; / line w/o LF */
57	greg	2.4	short sp; / character spacing */
58	greg	1.1	struct line next; / next line up */
59			} LINE;
60
61			LINE ourtext; / our text */
62			int nlines, maxline; /* text dimensions */
63	greg	2.4	int maxwidth; /* maximum line width (dvi) */
64	greg	1.1
65	greg	2.3	extern char *getenv();
66	greg	1.2	extern char malloc(), calloc();
67	greg	1.1
68
69			main(argc, argv)
70			int argc;
71			char *argv[];
72			{
73			int an;
74
75			for (an = 1; an < argc && argv[an][0] == '-'; an++)
76			switch (argv[an][1]) {
77			case 'c': /* color */
78			switch (argv[an][2]) {
79			case 'f': /* foreground */
80			setcolr(fgcolr, atof(argv[an+1]),
81			atof(argv[an+2]),
82			atof(argv[an+3]));
83			an += 3;
84			break;
85			case 'b': /* background */
86			setcolr(bgcolr, atof(argv[an+1]),
87			atof(argv[an+2]),
88			atof(argv[an+3]));
89			an += 3;
90			break;
91			default:
92			goto unkopt;
93			}
94			break;
95			case 'f': /* font */
96			fontfile = argv[++an];
97			break;
98			case 'd': /* direction */
99			switch (argv[an][2]) {
100			case 'r': /* right */
101			case 'u': /* up */
102			case 'l': /* left */
103			case 'd': /* down */
104			direct = argv[an][2];
105			break;
106			default:
107			goto unkopt;
108			}
109			break;
110			case 'h': /* height of characters */
111			cheight = atoi(argv[++an]);
112			break;
113			case 'a': /* aspect ratio */
114			aspect = atof(argv[++an]);
115			break;
116			default:;
117			unkopt:
118			fprintf(stderr, "%s: unknown option: %s\n",
119			argv[0], argv[an]);
120			exit(1);
121			}
122	greg	2.4	/* load font file */
123			if ((libpath = getenv(ULIBVAR)) == NULL)
124			libpath = DEFPATH;
125			ourfont = getfont(fontfile);
126	greg	1.1	/* get text */
127			if (an == argc)
128			gettext(stdin);
129			else
130			arg_text(argc-an, argv+an);
131
132			/* create bit map */
133			makemap();
134			/* convert text to bitmap */
135			maptext();
136			/* print header */
137			printargs(argc, argv, stdout);
138	greg	1.3	fputformat(COLRFMT, stdout);
139			putchar('\n');
140	greg	1.1	/* write out bitmap */
141			writemap(stdout);
142
143			exit(0);
144			}
145
146
147			makemap() /* create the bit map */
148			{
149			cwidth = cheight/aspect + 0.5;
150			if (direct == 'r' \|\| direct == 'l') {
151			xsiz = maxline*cwidth;
152			ysiz = nlines*cheight;
153			} else { /* reverse orientation */
154			xsiz = nlines*cheight;
155			ysiz = maxline*cwidth;
156			}
157			xdim = (xsiz+7)/8;
158			ourbitmap = (BYTE *)calloc(ysiz, xdim);
159			if (ourbitmap == NULL) {
160			fprintf(stderr, "out of memory in makemap\n");
161			exit(1);
162			}
163			}
164
165
166			gettext(fp) /* get text from a file */
167			FILE *fp;
168			{
169			char *fgets();
170			char buf[MAXLINE];
171			register LINE *curl;
172			int len;
173
174			maxline = 0;
175	greg	2.4	maxwidth = 0;
176	greg	1.1	nlines = 0;
177			while (fgets(buf, MAXLINE, fp) != NULL) {
178			curl = (LINE *)malloc(sizeof(LINE));
179			if (curl == NULL)
180			goto memerr;
181			len = strlen(buf);
182	greg	2.4	curl->s = malloc(len);
183			curl->sp = (short )malloc(sizeof(short)len--);
184			if (curl->s == NULL \| curl->sp == NULL)
185	greg	1.1	goto memerr;
186	greg	2.4	if (len > maxline)
187			maxline = len;
188	greg	1.1	strncpy(curl->s, buf, len);
189			curl->s[len] = '\0';
190	greg	2.4	len = uniftext(curl->sp, curl->s, ourfont);
191			if (len > maxwidth)
192			maxwidth = len;
193	greg	1.1	curl->next = ourtext;
194			ourtext = curl;
195			nlines++;
196			}
197			return;
198			memerr:
199			fprintf(stderr, "out of memory in gettext\n");
200			exit(1);
201			}
202
203
204			arg_text(ac, av) /* get text from arguments */
205			int ac;
206			char *av[];
207			{
208			register char *cp;
209
210			ourtext = (LINE *)malloc(sizeof(LINE));
211			if (ourtext == NULL)
212			goto memerr;
213			ourtext->s = malloc(MAXLINE);
214			if (ourtext->s == NULL)
215			goto memerr;
216			for (cp = ourtext->s; ac-- > 0; av++) {
217			strcpy(cp, *av);
218			cp += strlen(*av);
219			*cp++ = ' ';
220			}
221			*--cp = '\0';
222			ourtext->next = NULL;
223			maxline = strlen(ourtext->s);
224	greg	2.4	ourtext->sp = (short )malloc(sizeof(short)(maxline+1));
225			if (ourtext->sp == NULL)
226			goto memerr;
227			maxwidth = uniftext(ourtext->sp, ourtext->s, ourfont);
228	greg	1.1	nlines = 1;
229			return;
230			memerr:
231			fprintf(stderr, "out of memory in arg_text\n");
232			exit(1);
233			}
234
235
236			maptext() /* map our text */
237			{
238			register LINE *curl;
239	greg	2.4	int l, len;
240			register int i, c;
241	greg	1.1
242	greg	2.4	for (l = 0, curl = ourtext; curl != NULL; l += 256, curl = curl->next) {
243			len = strlen(curl->s); c = 0;
244			for (i = 0; i < len; i++) {
245			c += curl->sp[i];
246			mapglyph(ourfont->fg[curl->s[i]&0xff], c, l);
247			}
248			}
249	greg	1.1	}
250
251
252			mapglyph(gl, tx0, ty0) /* convert a glyph */
253	greg	2.3	GLYPH *gl;
254	greg	1.1	int tx0, ty0;
255			{
256			int n;
257	greg	2.3	register GORD *gp;
258	greg	1.1	int p0[2], p1[2];
259
260			if (gl == NULL)
261			return;
262
263	greg	2.3	n = gl->nverts;
264			gp = gvlist(gl);
265			mapcoord(p0, gp[2n-2]+tx0, gp[2n-1]+ty0);
266	greg	1.1	while (n--) {
267	greg	2.3	mapcoord(p1, gp[0]+tx0, gp[1]+ty0);
268	greg	1.1	mapedge(p0[0], p0[1], p1[0]-p0[0], p1[1]-p0[1]);
269			p0[0] = p1[0]; p0[1] = p1[1];
270	greg	2.3	gp += 2;
271	greg	1.1	}
272			}
273
274
275			mapcoord(p, tx, ty) /* map text to picture coordinates */
276			int p[2], tx, ty;
277			{
278			tx = (long)tx*cwidth >> 8;
279			ty = (long)ty*cheight >> 8;
280
281			switch (direct) {
282			case 'r': /* right */
283			p[0] = tx;
284			p[1] = ty;
285			return;
286			case 'u': /* up */
287			p[0] = xsiz-1-ty;
288			p[1] = tx;
289			return;
290			case 'l': /* left */
291			p[0] = xsiz-1-tx;
292			p[1] = ysiz-1-ty;
293			return;
294			case 'd': /* down */
295			p[0] = ty;
296			p[1] = ysiz-1-tx;
297			return;
298			}
299			}
300
301
302			mapedge(x, y, run, rise) /* map an edge */
303			register int x, y;
304			int run, rise;
305			{
306			int xstep;
307			int rise2, run2;
308			int n;
309
310			if (rise == 0)
311			return;
312			/* always draw up */
313			if (rise < 0) {
314			x += run;
315			y += rise;
316			rise = -rise;
317			run = -run;
318			}
319			if (run < 0) {
320			xstep = -1;
321			run = -run;
322			} else
323			xstep = 1;
324			n = rise;
325			run2 = rise2 = 0;
326			while (n)
327			if (rise2 >= run2) {
328			tglbit(x, y);
329			n--;
330			y++;
331			run2 += run;
332			} else {
333			x += xstep;
334			rise2 += rise;
335			}
336			}
337
338
339			writemap(fp) /* write out bitmap */
340			FILE *fp;
341			{
342			COLR *scanout;
343			int y;
344			register int x;
345			register int inglyph;
346
347			fprintf(fp, "-Y %d +X %d\n", ysiz, xsiz);
348
349			scanout = (COLR )malloc(xsizsizeof(COLR));
350			if (scanout == NULL) {
351			fprintf(stderr, "out of memory in writemap\n");
352			exit(1);
353			}
354			for (y = ysiz-1; y >= 0; y--) {
355			inglyph = 0;
356			for (x = 0; x < xsiz; x++) {
357			if (tstbit(x, y))
358			inglyph ^= 1;
359			if (inglyph)
360			copycolr(scanout[x], fgcolr);
361			else
362			copycolr(scanout[x], bgcolr);
363			}
364			if (fwritecolrs(scanout, xsiz, fp) < 0) {
365			fprintf(stderr, "write error in writemap\n");
366			exit(1);
367			}
368			}
369			free((char *)scanout);
370			}