src/px/psign.c

#ifndef lint
static const char       RCSid[] = "$Id: psign.c,v 2.22 2003/06/30 14:59:12 schorsch Exp $";
#endif
/*
 *  psign.c - produce picture from text.
 *
 *      7/1/87
 */

#include  "copyright.h"

#include  <string.h>

#include  "standard.h"
#include  "platform.h"
#include  "color.h"
#include  "font.h"

#ifndef  SSS
#define  SSS                    3       /* super-sample size */
#endif

#define  MAXLINE                512     /* longest allowable line */

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

COLOR  bgcolor = WHTCOLOR;              /* background color */
COLOR  fgcolor = BLKCOLOR;              /* foreground color */

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

int  cheight = 32*SSS;                  /* character height */
double  aspect = 1.67;                  /* height/width character aspect */
double  spacing = 0.0;                  /* character spacing */
int  cwidth;                            /* computed character width */

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

                                /* conflicting def's in param.h */
#undef  tstbit
#undef  setbit
#undef  clrbit
#undef  tglbit

#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 */

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) */


main(argc, argv)
int  argc;
char  *argv[];
{
        int  an;
        SET_FILE_BINARY(stdout);
        for (an = 1; an < argc && argv[an][0] == '-'; an++)
                switch (argv[an][1]) {
                case 'c':                       /* color */
                        switch (argv[an][2]) {
                        case 'f':                       /* foreground */
                                setcolor(fgcolor, atof(argv[an+1]),
                                                atof(argv[an+2]),
                                                atof(argv[an+3]));
                                an += 3;
                                break;
                        case 'b':                       /* background */
                                setcolor(bgcolor, 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 'x':                       /* x resolution */
                        xsiz = atoi(argv[++an])*SSS;
                        break;
                case 'y':
                        ysiz = atoi(argv[++an])*SSS;
                        break;
                case 'h':                       /* height of characters */
                        cheight = atoi(argv[++an])*SSS;
                        break;
                case 'a':                       /* aspect ratio */
                        aspect = atof(argv[++an]);
                        break;
                case 's':                       /* spacing */
                        spacing = atof(argv[++an]);
                        break;
                default:;
unkopt:
                        fprintf(stderr, "%s: unknown option: %s\n",
                                        argv[0], argv[an]);
                        exit(1);
                }
                                        /* load font file */
        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 */
        newheader("RADIANCE", stdout);
        printargs(argc, argv, stdout);
        fputformat(COLRFMT, stdout);
        putchar('\n');
                                        /* write out bitmap */
        writemap(stdout);

        exit(0);
}


makemap()                       /* create the bit map */
{
        double  pictaspect;
        
        if (direct == 'r' || direct == 'l') {
                if (xsiz <= 0) {
                        cwidth = cheight/aspect + 0.5;
                        xsiz = (long)maxwidth*cwidth >> 8;
                        ysiz = nlines*cheight;
                } else if (aspect > FTINY) {
                        if (ysiz <= 0)
                                ysiz = cheight*nlines;
                        pictaspect = 256*nlines*aspect/maxwidth;
                        if (pictaspect*xsiz < ysiz)
                                ysiz = pictaspect*xsiz + 0.5;
                        else
                                xsiz = ysiz/pictaspect + 0.5;
                        cheight = ysiz/nlines;
                        cwidth = cheight/aspect;
                } else {
                        if (ysiz <= 0)
                                ysiz = cheight*nlines;
                        pictaspect = (double)ysiz/xsiz;
                        aspect = pictaspect*maxwidth/(256*nlines);
                        cheight = ysiz/nlines;
                        cwidth = cheight/aspect;
                }
        } else {                        /* reverse orientation */
                if (ysiz <= 0) {
                        cwidth = cheight/aspect + 0.5;
                        xsiz = nlines*cheight;
                        ysiz = (long)maxwidth*cwidth >> 8;
                } else if (aspect > FTINY) {
                        if (xsiz <= 0)
                                xsiz = cheight*nlines;
                        pictaspect = maxwidth/(256*nlines*aspect);
                        if (pictaspect*xsiz < ysiz)
                                ysiz = pictaspect*xsiz + 0.5;
                        else
                                xsiz = ysiz/pictaspect + 0.5;
                        cheight = xsiz/nlines;
                        cwidth = cheight/aspect;
                } else {
                        if (xsiz <= 0)
                                xsiz = cheight*nlines;
                        pictaspect = (double)ysiz/xsiz;
                        aspect = maxwidth/(256*nlines*pictaspect);
                        cheight = xsiz/nlines;
                        cwidth = cheight/aspect;
                }
        }
        if (xsiz % SSS)
                xsiz += SSS - xsiz%SSS;
        if (ysiz % SSS)
                ysiz += SSS - ysiz%SSS;
        xdim = (xsiz+7)/8;
        ourbitmap = (BYTE *)bmalloc(ysiz*xdim);
        if (ourbitmap == NULL)
                error(SYSTEM, "Out of memory in makemap");
        memset((char *)ourbitmap, '\0', ysiz*xdim);
}


gettext(fp)                     /* get text from a file */
FILE  *fp;
{
        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 = (char *)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';
                if (spacing < -1./256.)
                        len = squeeztext(curl->sp, curl->s, ourfont,
                                        (int)(spacing*-256.));
                else if (spacing > 1./256.)
                        len = proptext(curl->sp, curl->s, ourfont,
                                        (int)(spacing*256.), 3);
                else
                        len = uniftext(curl->sp, curl->s, ourfont);
                if (len > maxwidth)
                        maxwidth = len;
                curl->next = ourtext;
                ourtext = curl;
                nlines++;
        }
        return;
memerr:
        error(SYSTEM, "Out of memory in gettext");
}


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 = (char *)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;
        if (spacing < -1./256.)
                maxwidth = squeeztext(ourtext->sp, ourtext->s, ourfont,
                                (int)(spacing*-256.));
        else if (spacing > 1./256.)
                maxwidth = proptext(ourtext->sp, ourtext->s, ourfont,
                                (int)(spacing*256.), 3);
        else
                maxwidth = uniftext(ourtext->sp, ourtext->s, ourfont);
        nlines = 1;
        return;
memerr:
        error(SYSTEM, "Out of memory in arg_text");
}


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  pixval[SSS*SSS+1];        /* possible pixel values */
        COLOR  ctmp0, ctmp1;
        double  d;
        COLR  *scanout;
        int  x, y;
        register int  i, j;
        int  cnt;
        register int  inglyph;

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

        scanout = (COLR *)malloc(xsiz/SSS*sizeof(COLR));
        if (scanout == NULL)
                error(SYSTEM, "Out of memory in writemap");
        for (i = 0; i <= SSS*SSS; i++) {        /* compute possible values */
                copycolor(ctmp0, fgcolor);
                d = (double)i/(SSS*SSS);
                scalecolor(ctmp0, d);
                copycolor(ctmp1, bgcolor);
                d = 1.0 - d;
                scalecolor(ctmp1, d);
                addcolor(ctmp0, ctmp1);
                setcolr(pixval[i], colval(ctmp0,RED),
                                colval(ctmp0,GRN), colval(ctmp0,BLU));
        }
        for (y = ysiz/SSS-1; y >= 0; y--) {
                inglyph = 0;
                for (x = 0; x < xsiz/SSS; x++) {
                        cnt = 0;
                        for (j = 0; j < SSS; j++)
                                for (i = 0; i < SSS; i++) {
                                        if (tstbit(x*SSS+i, y*SSS+j))
                                                inglyph ^= 1<<j;
                                        if (inglyph & 1<<j)
                                                cnt++;
                                }
                        copycolr(scanout[x], pixval[cnt]);
                }
                if (fwritecolrs(scanout, xsiz/SSS, fp) < 0) {
                        fprintf(stderr, "write error in writemap\n");
                        exit(1);
                }
        }
        free((void *)scanout);
}
Revision:	2.23
Committed:	Sun Jul 27 22:12:03 2003 UTC (20 years, 9 months ago) by schorsch
Content type:	text/plain
Branch:	MAIN
Changes since 2.22:	+2 -2 lines
Log Message:	Added grouping parens to reduce ambiguity warnings.
#	User	Rev	Content
1	greg	1.1	#ifndef lint
2	schorsch	2.23	static const char RCSid[] = "$Id: psign.c,v 2.22 2003/06/30 14:59:12 schorsch Exp $";
3	greg	1.1	#endif
4			/*
5			* psign.c - produce picture from text.
6			*
7			* 7/1/87
8			*/
9
10	schorsch	2.22	#include "copyright.h"
11
12			#include <string.h>
13
14	greg	2.3	#include "standard.h"
15	schorsch	2.20	#include "platform.h"
16	greg	1.1	#include "color.h"
17	greg	2.3	#include "font.h"
18
19	greg	2.13	#ifndef SSS
20			#define SSS 3 /* super-sample size */
21	greg	2.5	#endif
22	greg	2.4
23	greg	2.13	#define MAXLINE 512 /* longest allowable line */
24	greg	1.1
25	greg	1.2	char fontfile = "helvet.fnt"; / our font file */
26	greg	1.1
27	greg	2.5	COLOR bgcolor = WHTCOLOR; /* background color */
28			COLOR fgcolor = BLKCOLOR; /* foreground color */
29	greg	1.1
30			int direct = 'r'; /* direction (right, up, left, down) */
31
32	greg	2.5	int cheight = 32SSS; / character height */
33	greg	2.13	double aspect = 1.67; /* height/width character aspect */
34			double spacing = 0.0; /* character spacing */
35	greg	1.1	int cwidth; /* computed character width */
36
37			unsigned char ourbitmap; / our output bitmap */
38			int xsiz, ysiz; /* bitmap dimensions */
39			int xdim; /* size of horizontal scan (bytes) */
40	greg	2.21
41			/* conflicting def's in param.h */
42			#undef tstbit
43			#undef setbit
44			#undef clrbit
45			#undef tglbit
46	greg	1.1
47	greg	2.13	#define bitop(x,y,op) (ourbitmap[(y)*xdim+((x)>>3)] op (1<<((x)&7)))
48			#define tstbit(x,y) bitop(x,y,&)
49			#define setbit(x,y) bitop(x,y,\|=)
50			#define clrbit(x,y) bitop(x,y,&=~)
51			#define tglbit(x,y) bitop(x,y,^=)
52	greg	1.1
53	greg	2.3	FONT ourfont; / our font */
54	greg	1.1
55			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
66			main(argc, argv)
67			int argc;
68			char *argv[];
69			{
70			int an;
71	schorsch	2.19	SET_FILE_BINARY(stdout);
72	greg	1.1	for (an = 1; an < argc && argv[an][0] == '-'; an++)
73			switch (argv[an][1]) {
74			case 'c': /* color */
75			switch (argv[an][2]) {
76			case 'f': /* foreground */
77	greg	2.5	setcolor(fgcolor, atof(argv[an+1]),
78	greg	1.1	atof(argv[an+2]),
79			atof(argv[an+3]));
80			an += 3;
81			break;
82			case 'b': /* background */
83	greg	2.5	setcolor(bgcolor, atof(argv[an+1]),
84	greg	1.1	atof(argv[an+2]),
85			atof(argv[an+3]));
86			an += 3;
87			break;
88			default:
89			goto unkopt;
90			}
91			break;
92			case 'f': /* font */
93			fontfile = argv[++an];
94			break;
95			case 'd': /* direction */
96			switch (argv[an][2]) {
97			case 'r': /* right */
98			case 'u': /* up */
99			case 'l': /* left */
100			case 'd': /* down */
101			direct = argv[an][2];
102			break;
103			default:
104			goto unkopt;
105			}
106			break;
107	greg	2.9	case 'x': /* x resolution */
108			xsiz = atoi(argv[++an])*SSS;
109			break;
110			case 'y':
111			ysiz = atoi(argv[++an])*SSS;
112			break;
113	greg	1.1	case 'h': /* height of characters */
114	greg	2.5	cheight = atoi(argv[++an])*SSS;
115	greg	1.1	break;
116			case 'a': /* aspect ratio */
117			aspect = atof(argv[++an]);
118			break;
119	greg	2.6	case 's': /* spacing */
120			spacing = atof(argv[++an]);
121			break;
122	greg	1.1	default:;
123			unkopt:
124			fprintf(stderr, "%s: unknown option: %s\n",
125			argv[0], argv[an]);
126			exit(1);
127			}
128	greg	2.4	/* load font file */
129			ourfont = getfont(fontfile);
130	greg	1.1	/* get text */
131			if (an == argc)
132			gettext(stdin);
133			else
134			arg_text(argc-an, argv+an);
135
136			/* create bit map */
137			makemap();
138			/* convert text to bitmap */
139			maptext();
140			/* print header */
141	greg	2.16	newheader("RADIANCE", stdout);
142	greg	1.1	printargs(argc, argv, stdout);
143	greg	1.3	fputformat(COLRFMT, stdout);
144			putchar('\n');
145	greg	1.1	/* write out bitmap */
146			writemap(stdout);
147
148			exit(0);
149			}
150
151
152			makemap() /* create the bit map */
153			{
154	greg	2.13	double pictaspect;
155	greg	2.9
156	greg	1.1	if (direct == 'r' \|\| direct == 'l') {
157	greg	2.11	if (xsiz <= 0) {
158	greg	2.9	cwidth = cheight/aspect + 0.5;
159			xsiz = (long)maxwidth*cwidth >> 8;
160			ysiz = nlines*cheight;
161	greg	2.10	} else if (aspect > FTINY) {
162	greg	2.11	if (ysiz <= 0)
163			ysiz = cheight*nlines;
164	greg	2.9	pictaspect = 256nlinesaspect/maxwidth;
165			if (pictaspect*xsiz < ysiz)
166			ysiz = pictaspect*xsiz + 0.5;
167			else
168			xsiz = ysiz/pictaspect + 0.5;
169			cheight = ysiz/nlines;
170	greg	2.14	cwidth = cheight/aspect;
171	greg	2.10	} else {
172	greg	2.11	if (ysiz <= 0)
173			ysiz = cheight*nlines;
174	greg	2.10	pictaspect = (double)ysiz/xsiz;
175			aspect = pictaspectmaxwidth/(256nlines);
176			cheight = ysiz/nlines;
177	greg	2.14	cwidth = cheight/aspect;
178	greg	2.9	}
179	greg	1.1	} else { /* reverse orientation */
180	greg	2.11	if (ysiz <= 0) {
181	greg	2.9	cwidth = cheight/aspect + 0.5;
182			xsiz = nlines*cheight;
183			ysiz = (long)maxwidth*cwidth >> 8;
184	greg	2.10	} else if (aspect > FTINY) {
185	greg	2.11	if (xsiz <= 0)
186			xsiz = cheight*nlines;
187	greg	2.9	pictaspect = maxwidth/(256nlinesaspect);
188			if (pictaspect*xsiz < ysiz)
189			ysiz = pictaspect*xsiz + 0.5;
190			else
191			xsiz = ysiz/pictaspect + 0.5;
192	greg	2.10	cheight = xsiz/nlines;
193	greg	2.14	cwidth = cheight/aspect;
194	greg	2.10	} else {
195	greg	2.11	if (xsiz <= 0)
196			xsiz = cheight*nlines;
197	greg	2.10	pictaspect = (double)ysiz/xsiz;
198			aspect = maxwidth/(256nlinespictaspect);
199	greg	2.9	cheight = xsiz/nlines;
200	greg	2.14	cwidth = cheight/aspect;
201	greg	2.9	}
202	greg	1.1	}
203	greg	2.5	if (xsiz % SSS)
204			xsiz += SSS - xsiz%SSS;
205			if (ysiz % SSS)
206			ysiz += SSS - ysiz%SSS;
207	greg	1.1	xdim = (xsiz+7)/8;
208	greg	2.8	ourbitmap = (BYTE )bmalloc(ysizxdim);
209	greg	2.5	if (ourbitmap == NULL)
210			error(SYSTEM, "Out of memory in makemap");
211	schorsch	2.22	memset((char )ourbitmap, '\0', ysizxdim);
212	greg	1.1	}
213
214
215			gettext(fp) /* get text from a file */
216			FILE *fp;
217			{
218			char buf[MAXLINE];
219			register LINE *curl;
220			int len;
221
222			maxline = 0;
223	greg	2.4	maxwidth = 0;
224	greg	1.1	nlines = 0;
225			while (fgets(buf, MAXLINE, fp) != NULL) {
226			curl = (LINE *)malloc(sizeof(LINE));
227			if (curl == NULL)
228			goto memerr;
229			len = strlen(buf);
230	greg	2.18	curl->s = (char *)malloc(len);
231	greg	2.4	curl->sp = (short )malloc(sizeof(short)len--);
232	schorsch	2.23	if ((curl->s == NULL) \| (curl->sp == NULL))
233	greg	1.1	goto memerr;
234	greg	2.4	if (len > maxline)
235			maxline = len;
236	greg	1.1	strncpy(curl->s, buf, len);
237			curl->s[len] = '\0';
238	greg	2.7	if (spacing < -1./256.)
239	greg	2.6	len = squeeztext(curl->sp, curl->s, ourfont,
240	greg	2.14	(int)(spacing*-256.));
241	greg	2.7	else if (spacing > 1./256.)
242	greg	2.6	len = proptext(curl->sp, curl->s, ourfont,
243	greg	2.14	(int)(spacing*256.), 3);
244	greg	2.6	else
245			len = uniftext(curl->sp, curl->s, ourfont);
246	greg	2.4	if (len > maxwidth)
247			maxwidth = len;
248	greg	1.1	curl->next = ourtext;
249			ourtext = curl;
250			nlines++;
251			}
252			return;
253			memerr:
254	greg	2.5	error(SYSTEM, "Out of memory in gettext");
255	greg	1.1	}
256
257
258			arg_text(ac, av) /* get text from arguments */
259			int ac;
260			char *av[];
261			{
262			register char *cp;
263
264			ourtext = (LINE *)malloc(sizeof(LINE));
265			if (ourtext == NULL)
266			goto memerr;
267	greg	2.18	ourtext->s = (char *)malloc(MAXLINE);
268	greg	1.1	if (ourtext->s == NULL)
269			goto memerr;
270			for (cp = ourtext->s; ac-- > 0; av++) {
271			strcpy(cp, *av);
272			cp += strlen(*av);
273			*cp++ = ' ';
274			}
275			*--cp = '\0';
276			ourtext->next = NULL;
277			maxline = strlen(ourtext->s);
278	greg	2.4	ourtext->sp = (short )malloc(sizeof(short)(maxline+1));
279			if (ourtext->sp == NULL)
280			goto memerr;
281	greg	2.14	if (spacing < -1./256.)
282	greg	2.6	maxwidth = squeeztext(ourtext->sp, ourtext->s, ourfont,
283	greg	2.14	(int)(spacing*-256.));
284			else if (spacing > 1./256.)
285	greg	2.6	maxwidth = proptext(ourtext->sp, ourtext->s, ourfont,
286	greg	2.14	(int)(spacing*256.), 3);
287	greg	2.6	else
288			maxwidth = uniftext(ourtext->sp, ourtext->s, ourfont);
289	greg	1.1	nlines = 1;
290			return;
291			memerr:
292	greg	2.5	error(SYSTEM, "Out of memory in arg_text");
293	greg	1.1	}
294
295
296			maptext() /* map our text */
297			{
298			register LINE *curl;
299	greg	2.4	int l, len;
300			register int i, c;
301	greg	1.1
302	greg	2.4	for (l = 0, curl = ourtext; curl != NULL; l += 256, curl = curl->next) {
303			len = strlen(curl->s); c = 0;
304			for (i = 0; i < len; i++) {
305			c += curl->sp[i];
306			mapglyph(ourfont->fg[curl->s[i]&0xff], c, l);
307			}
308			}
309	greg	1.1	}
310
311
312			mapglyph(gl, tx0, ty0) /* convert a glyph */
313	greg	2.3	GLYPH *gl;
314	greg	1.1	int tx0, ty0;
315			{
316			int n;
317	greg	2.3	register GORD *gp;
318	greg	1.1	int p0[2], p1[2];
319
320			if (gl == NULL)
321			return;
322
323	greg	2.3	n = gl->nverts;
324			gp = gvlist(gl);
325			mapcoord(p0, gp[2n-2]+tx0, gp[2n-1]+ty0);
326	greg	1.1	while (n--) {
327	greg	2.3	mapcoord(p1, gp[0]+tx0, gp[1]+ty0);
328	greg	1.1	mapedge(p0[0], p0[1], p1[0]-p0[0], p1[1]-p0[1]);
329			p0[0] = p1[0]; p0[1] = p1[1];
330	greg	2.3	gp += 2;
331	greg	1.1	}
332			}
333
334
335			mapcoord(p, tx, ty) /* map text to picture coordinates */
336			int p[2], tx, ty;
337			{
338			tx = (long)tx*cwidth >> 8;
339			ty = (long)ty*cheight >> 8;
340
341			switch (direct) {
342			case 'r': /* right */
343			p[0] = tx;
344			p[1] = ty;
345			return;
346			case 'u': /* up */
347			p[0] = xsiz-1-ty;
348			p[1] = tx;
349			return;
350			case 'l': /* left */
351			p[0] = xsiz-1-tx;
352			p[1] = ysiz-1-ty;
353			return;
354			case 'd': /* down */
355			p[0] = ty;
356			p[1] = ysiz-1-tx;
357			return;
358			}
359			}
360
361
362			mapedge(x, y, run, rise) /* map an edge */
363			register int x, y;
364			int run, rise;
365			{
366			int xstep;
367			int rise2, run2;
368			int n;
369
370			if (rise == 0)
371			return;
372			/* always draw up */
373			if (rise < 0) {
374			x += run;
375			y += rise;
376			rise = -rise;
377			run = -run;
378			}
379			if (run < 0) {
380			xstep = -1;
381			run = -run;
382			} else
383			xstep = 1;
384			n = rise;
385			run2 = rise2 = 0;
386			while (n)
387			if (rise2 >= run2) {
388			tglbit(x, y);
389			n--;
390			y++;
391			run2 += run;
392			} else {
393			x += xstep;
394			rise2 += rise;
395			}
396			}
397
398
399			writemap(fp) /* write out bitmap */
400			FILE *fp;
401			{
402	greg	2.5	COLR pixval[SSSSSS+1]; / possible pixel values */
403			COLOR ctmp0, ctmp1;
404	greg	2.13	double d;
405	greg	1.1	COLR *scanout;
406	greg	2.5	int x, y;
407			register int i, j;
408			int cnt;
409	greg	1.1	register int inglyph;
410
411	greg	2.5	fprintf(fp, "-Y %d +X %d\n", ysiz/SSS, xsiz/SSS);
412	greg	1.1
413	greg	2.5	scanout = (COLR )malloc(xsiz/SSSsizeof(COLR));
414			if (scanout == NULL)
415			error(SYSTEM, "Out of memory in writemap");
416			for (i = 0; i <= SSSSSS; i++) { / compute possible values */
417			copycolor(ctmp0, fgcolor);
418			d = (double)i/(SSS*SSS);
419			scalecolor(ctmp0, d);
420			copycolor(ctmp1, bgcolor);
421			d = 1.0 - d;
422			scalecolor(ctmp1, d);
423			addcolor(ctmp0, ctmp1);
424			setcolr(pixval[i], colval(ctmp0,RED),
425			colval(ctmp0,GRN), colval(ctmp0,BLU));
426	greg	1.1	}
427	greg	2.5	for (y = ysiz/SSS-1; y >= 0; y--) {
428	greg	1.1	inglyph = 0;
429	greg	2.5	for (x = 0; x < xsiz/SSS; x++) {
430			cnt = 0;
431			for (j = 0; j < SSS; j++)
432			for (i = 0; i < SSS; i++) {
433			if (tstbit(xSSS+i, ySSS+j))
434			inglyph ^= 1<<j;
435			if (inglyph & 1<<j)
436			cnt++;
437			}
438			copycolr(scanout[x], pixval[cnt]);
439	greg	1.1	}
440	greg	2.5	if (fwritecolrs(scanout, xsiz/SSS, fp) < 0) {
441	greg	1.1	fprintf(stderr, "write error in writemap\n");
442			exit(1);
443			}
444			}
445	greg	2.18	free((void *)scanout);
446	greg	1.1	}