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  <stdio.h>

#include  "color.h"

#define  MAXLINE                512     /* longest allowable line */

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,^=)

typedef unsigned char  GLYPH;

GLYPH  *ourfont[128];                   /* our font */

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

LINE  *ourtext;                         /* our text */
int  nlines, maxline;                   /* text dimensions */

extern char  *malloc(), *calloc();
extern FILE  *fropen();


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);
                }
                                        /* get text */
        if (an == argc)
                gettext(stdin);
        else
                arg_text(argc-an, argv+an);

                                        /* create bit map */
        makemap();
                                        /* load font file */
        loadfont();
                                        /* 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);
        }
}


loadfont()                      /* load the font file */
{
        FILE  *fp;
        char  *err;
        int  gn, ngv, gv;
        register GLYPH  *g;

        if ((fp = fropen(fontfile)) == NULL) {
                fprintf(stderr, "cannot find font file \"%s\"\n",
                                fontfile);
                exit(1);
        }
        while (fscanf(fp, "%d", &gn) == 1) {    /* get each glyph */
                if (gn < 0 || gn > 127) {
                        err = "illegal";
                        goto fonterr;
                }
                if (ourfont[gn] != NULL) {
                        err = "duplicate";
                        goto fonterr;
                }
                if (fscanf(fp, "%d", &ngv) != 1 ||
                                ngv < 0 || ngv > 255) {
                        err = "bad # vertices for";
                        goto fonterr;
                }
                g = (GLYPH *)malloc((2*ngv+1)*sizeof(GLYPH));
                if (g == NULL)
                        goto memerr;
                ourfont[gn] = g;
                *g++ = ngv;
                ngv *= 2;
                while (ngv--) {
                        if (fscanf(fp, "%d", &gv) != 1 ||
                                        gv < 0 || gv > 255) {
                                err = "bad vertex for";
                                goto fonterr;
                        }
                        *g++ = gv;
                }
        }
        fclose(fp);
        return;
fonterr:
        fprintf(stderr, "%s character (%d) in font file \"%s\"\n",
                        err, gn, fontfile);
        exit(1);
memerr:
        fprintf(stderr, "out of memory in loadfont\n");
        exit(1);
}


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

        maxline = 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--);
                if (curl->s == NULL)
                        goto memerr;
                strncpy(curl->s, buf, len);
                curl->s[len] = '\0';
                curl->next = ourtext;
                ourtext = curl;
                if (len > maxline)
                        maxline = len;
                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);
        nlines = 1;
        return;
memerr:
        fprintf(stderr, "out of memory in arg_text\n");
        exit(1);
}


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

        for (l = 0, curl = ourtext; curl != NULL; l++, curl = curl->next)
                for (c = strlen(curl->s)-1; c >= 0; c--)
                        mapglyph(ourfont[curl->s[c]], c, l);
}


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

        if (gl == NULL)
                return;

        tx0 <<= 8; ty0 <<= 8;
        n = *gl++;
        mapcoord(p0, gl[2*n-2]+tx0, gl[2*n-1]+ty0);
        while (n--) {
                mapcoord(p1, gl[0]+tx0, gl[1]+ty0);
                mapedge(p0[0], p0[1], p1[0]-p0[0], p1[1]-p0[1]);
                p0[0] = p1[0]; p0[1] = p1[1];
                gl += 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:	2.2
Committed:	Thu Dec 19 14:52:00 1991 UTC (32 years, 4 months ago) by greg
Content type:	text/plain
Branch:	MAIN
Changes since 2.1:	+0 -1 lines
Log Message:	eliminated atof declarations for NeXT
#	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			#include <stdio.h>
14
15			#include "color.h"
16
17			#define MAXLINE 512 /* longest allowable line */
18
19	greg	1.2	char fontfile = "helvet.fnt"; / our font file */
20	greg	1.1
21			COLR bgcolr = WHTCOLR; /* background color */
22			COLR fgcolr = BLKCOLR; /* foreground color */
23
24			int direct = 'r'; /* direction (right, up, left, down) */
25
26			int cheight = 32; /* character height */
27			double aspect = 1.67; /* height/width character aspect */
28			int cwidth; /* computed character width */
29
30			unsigned char ourbitmap; / our output bitmap */
31			int xsiz, ysiz; /* bitmap dimensions */
32			int xdim; /* size of horizontal scan (bytes) */
33
34			#define bitop(x,y,op) (ourbitmap[(y)*xdim+((x)>>3)] op (1<<((x)&7)))
35			#define tstbit(x,y) bitop(x,y,&)
36			#define setbit(x,y) bitop(x,y,\|=)
37			#define clrbit(x,y) bitop(x,y,&=~)
38			#define tglbit(x,y) bitop(x,y,^=)
39
40			typedef unsigned char GLYPH;
41
42			GLYPH ourfont[128]; / our font */
43
44			typedef struct line {
45			char s; / line w/o LF */
46			struct line next; / next line up */
47			} LINE;
48
49			LINE ourtext; / our text */
50			int nlines, maxline; /* text dimensions */
51
52	greg	1.2	extern char malloc(), calloc();
53			extern FILE *fropen();
54	greg	1.1
55
56			main(argc, argv)
57			int argc;
58			char *argv[];
59			{
60			int an;
61
62			for (an = 1; an < argc && argv[an][0] == '-'; an++)
63			switch (argv[an][1]) {
64			case 'c': /* color */
65			switch (argv[an][2]) {
66			case 'f': /* foreground */
67			setcolr(fgcolr, atof(argv[an+1]),
68			atof(argv[an+2]),
69			atof(argv[an+3]));
70			an += 3;
71			break;
72			case 'b': /* background */
73			setcolr(bgcolr, atof(argv[an+1]),
74			atof(argv[an+2]),
75			atof(argv[an+3]));
76			an += 3;
77			break;
78			default:
79			goto unkopt;
80			}
81			break;
82			case 'f': /* font */
83			fontfile = argv[++an];
84			break;
85			case 'd': /* direction */
86			switch (argv[an][2]) {
87			case 'r': /* right */
88			case 'u': /* up */
89			case 'l': /* left */
90			case 'd': /* down */
91			direct = argv[an][2];
92			break;
93			default:
94			goto unkopt;
95			}
96			break;
97			case 'h': /* height of characters */
98			cheight = atoi(argv[++an]);
99			break;
100			case 'a': /* aspect ratio */
101			aspect = atof(argv[++an]);
102			break;
103			default:;
104			unkopt:
105			fprintf(stderr, "%s: unknown option: %s\n",
106			argv[0], argv[an]);
107			exit(1);
108			}
109			/* get text */
110			if (an == argc)
111			gettext(stdin);
112			else
113			arg_text(argc-an, argv+an);
114
115			/* create bit map */
116			makemap();
117			/* load font file */
118			loadfont();
119			/* convert text to bitmap */
120			maptext();
121			/* print header */
122			printargs(argc, argv, stdout);
123	greg	1.3	fputformat(COLRFMT, stdout);
124			putchar('\n');
125	greg	1.1	/* write out bitmap */
126			writemap(stdout);
127
128			exit(0);
129			}
130
131
132			makemap() /* create the bit map */
133			{
134			cwidth = cheight/aspect + 0.5;
135			if (direct == 'r' \|\| direct == 'l') {
136			xsiz = maxline*cwidth;
137			ysiz = nlines*cheight;
138			} else { /* reverse orientation */
139			xsiz = nlines*cheight;
140			ysiz = maxline*cwidth;
141			}
142			xdim = (xsiz+7)/8;
143			ourbitmap = (BYTE *)calloc(ysiz, xdim);
144			if (ourbitmap == NULL) {
145			fprintf(stderr, "out of memory in makemap\n");
146			exit(1);
147			}
148			}
149
150
151			loadfont() /* load the font file */
152			{
153			FILE *fp;
154			char *err;
155			int gn, ngv, gv;
156			register GLYPH *g;
157
158	greg	1.2	if ((fp = fropen(fontfile)) == NULL) {
159			fprintf(stderr, "cannot find font file \"%s\"\n",
160	greg	1.1	fontfile);
161			exit(1);
162			}
163			while (fscanf(fp, "%d", &gn) == 1) { /* get each glyph */
164			if (gn < 0 \|\| gn > 127) {
165			err = "illegal";
166			goto fonterr;
167			}
168			if (ourfont[gn] != NULL) {
169			err = "duplicate";
170			goto fonterr;
171			}
172			if (fscanf(fp, "%d", &ngv) != 1 \|\|
173			ngv < 0 \|\| ngv > 255) {
174			err = "bad # vertices for";
175			goto fonterr;
176			}
177			g = (GLYPH )malloc((2ngv+1)*sizeof(GLYPH));
178			if (g == NULL)
179			goto memerr;
180			ourfont[gn] = g;
181			*g++ = ngv;
182			ngv *= 2;
183			while (ngv--) {
184			if (fscanf(fp, "%d", &gv) != 1 \|\|
185			gv < 0 \|\| gv > 255) {
186			err = "bad vertex for";
187			goto fonterr;
188			}
189			*g++ = gv;
190			}
191			}
192			fclose(fp);
193			return;
194			fonterr:
195			fprintf(stderr, "%s character (%d) in font file \"%s\"\n",
196			err, gn, fontfile);
197			exit(1);
198			memerr:
199			fprintf(stderr, "out of memory in loadfont\n");
200			exit(1);
201			}
202
203
204			gettext(fp) /* get text from a file */
205			FILE *fp;
206			{
207			char *fgets();
208			char buf[MAXLINE];
209			register LINE *curl;
210			int len;
211
212			maxline = 0;
213			nlines = 0;
214			while (fgets(buf, MAXLINE, fp) != NULL) {
215			curl = (LINE *)malloc(sizeof(LINE));
216			if (curl == NULL)
217			goto memerr;
218			len = strlen(buf);
219			curl->s = malloc(len--);
220			if (curl->s == NULL)
221			goto memerr;
222			strncpy(curl->s, buf, len);
223			curl->s[len] = '\0';
224			curl->next = ourtext;
225			ourtext = curl;
226			if (len > maxline)
227			maxline = len;
228			nlines++;
229			}
230			return;
231			memerr:
232			fprintf(stderr, "out of memory in gettext\n");
233			exit(1);
234			}
235
236
237			arg_text(ac, av) /* get text from arguments */
238			int ac;
239			char *av[];
240			{
241			register char *cp;
242
243			ourtext = (LINE *)malloc(sizeof(LINE));
244			if (ourtext == NULL)
245			goto memerr;
246			ourtext->s = malloc(MAXLINE);
247			if (ourtext->s == NULL)
248			goto memerr;
249			for (cp = ourtext->s; ac-- > 0; av++) {
250			strcpy(cp, *av);
251			cp += strlen(*av);
252			*cp++ = ' ';
253			}
254			*--cp = '\0';
255			ourtext->next = NULL;
256			maxline = strlen(ourtext->s);
257			nlines = 1;
258			return;
259			memerr:
260			fprintf(stderr, "out of memory in arg_text\n");
261			exit(1);
262			}
263
264
265			maptext() /* map our text */
266			{
267			register LINE *curl;
268			int l;
269			register int c;
270
271			for (l = 0, curl = ourtext; curl != NULL; l++, curl = curl->next)
272			for (c = strlen(curl->s)-1; c >= 0; c--)
273			mapglyph(ourfont[curl->s[c]], c, l);
274			}
275
276
277			mapglyph(gl, tx0, ty0) /* convert a glyph */
278			register GLYPH *gl;
279			int tx0, ty0;
280			{
281			int n;
282			int p0[2], p1[2];
283
284			if (gl == NULL)
285			return;
286
287			tx0 <<= 8; ty0 <<= 8;
288			n = *gl++;
289			mapcoord(p0, gl[2n-2]+tx0, gl[2n-1]+ty0);
290			while (n--) {
291			mapcoord(p1, gl[0]+tx0, gl[1]+ty0);
292			mapedge(p0[0], p0[1], p1[0]-p0[0], p1[1]-p0[1]);
293			p0[0] = p1[0]; p0[1] = p1[1];
294			gl += 2;
295			}
296			}
297
298
299			mapcoord(p, tx, ty) /* map text to picture coordinates */
300			int p[2], tx, ty;
301			{
302			tx = (long)tx*cwidth >> 8;
303			ty = (long)ty*cheight >> 8;
304
305			switch (direct) {
306			case 'r': /* right */
307			p[0] = tx;
308			p[1] = ty;
309			return;
310			case 'u': /* up */
311			p[0] = xsiz-1-ty;
312			p[1] = tx;
313			return;
314			case 'l': /* left */
315			p[0] = xsiz-1-tx;
316			p[1] = ysiz-1-ty;
317			return;
318			case 'd': /* down */
319			p[0] = ty;
320			p[1] = ysiz-1-tx;
321			return;
322			}
323			}
324
325
326			mapedge(x, y, run, rise) /* map an edge */
327			register int x, y;
328			int run, rise;
329			{
330			int xstep;
331			int rise2, run2;
332			int n;
333
334			if (rise == 0)
335			return;
336			/* always draw up */
337			if (rise < 0) {
338			x += run;
339			y += rise;
340			rise = -rise;
341			run = -run;
342			}
343			if (run < 0) {
344			xstep = -1;
345			run = -run;
346			} else
347			xstep = 1;
348			n = rise;
349			run2 = rise2 = 0;
350			while (n)
351			if (rise2 >= run2) {
352			tglbit(x, y);
353			n--;
354			y++;
355			run2 += run;
356			} else {
357			x += xstep;
358			rise2 += rise;
359			}
360			}
361
362
363			writemap(fp) /* write out bitmap */
364			FILE *fp;
365			{
366			COLR *scanout;
367			int y;
368			register int x;
369			register int inglyph;
370
371			fprintf(fp, "-Y %d +X %d\n", ysiz, xsiz);
372
373			scanout = (COLR )malloc(xsizsizeof(COLR));
374			if (scanout == NULL) {
375			fprintf(stderr, "out of memory in writemap\n");
376			exit(1);
377			}
378			for (y = ysiz-1; y >= 0; y--) {
379			inglyph = 0;
380			for (x = 0; x < xsiz; x++) {
381			if (tstbit(x, y))
382			inglyph ^= 1;
383			if (inglyph)
384			copycolr(scanout[x], fgcolr);
385			else
386			copycolr(scanout[x], bgcolr);
387			}
388			if (fwritecolrs(scanout, xsiz, fp) < 0) {
389			fprintf(stderr, "write error in writemap\n");
390			exit(1);
391			}
392			}
393			free((char *)scanout);
394			}