src/px/psign.c

#ifndef lint
static const char       RCSid[] = "$Id: psign.c,v 2.18 2003/02/22 02:07:27 greg Exp $";
#endif
/*
 *  psign.c - produce picture from text.
 *
 *      7/1/87
 */

#include  "standard.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) */

#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");
        bzero((char *)ourbitmap, 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:	2.19
Committed:	Thu Jun 5 19:29:34 2003 UTC (20 years, 11 months ago) by schorsch
Content type:	text/plain
Branch:	MAIN
Changes since 2.18:	+2 -6 lines
Log Message:	Macros for setting binary file mode. Replacing MSDOS by _WIN32.
#	User	Rev	Content
1	greg	1.1	#ifndef lint
2	schorsch	2.19	static const char RCSid[] = "$Id: psign.c,v 2.18 2003/02/22 02:07:27 greg Exp $";
3	greg	1.1	#endif
4			/*
5			* psign.c - produce picture from text.
6			*
7			* 7/1/87
8			*/
9
10	greg	2.3	#include "standard.h"
11	greg	1.1	#include "color.h"
12	greg	2.3	#include "font.h"
13
14	greg	2.13	#ifndef SSS
15			#define SSS 3 /* super-sample size */
16	greg	2.5	#endif
17	greg	2.4
18	greg	2.13	#define MAXLINE 512 /* longest allowable line */
19	greg	1.1
20	greg	1.2	char fontfile = "helvet.fnt"; / our font file */
21	greg	1.1
22	greg	2.5	COLOR bgcolor = WHTCOLOR; /* background color */
23			COLOR fgcolor = BLKCOLOR; /* foreground color */
24	greg	1.1
25			int direct = 'r'; /* direction (right, up, left, down) */
26
27	greg	2.5	int cheight = 32SSS; / character height */
28	greg	2.13	double aspect = 1.67; /* height/width character aspect */
29			double spacing = 0.0; /* character spacing */
30	greg	1.1	int cwidth; /* computed character width */
31
32			unsigned char ourbitmap; / our output bitmap */
33			int xsiz, ysiz; /* bitmap dimensions */
34			int xdim; /* size of horizontal scan (bytes) */
35
36	greg	2.13	#define bitop(x,y,op) (ourbitmap[(y)*xdim+((x)>>3)] op (1<<((x)&7)))
37			#define tstbit(x,y) bitop(x,y,&)
38			#define setbit(x,y) bitop(x,y,\|=)
39			#define clrbit(x,y) bitop(x,y,&=~)
40			#define tglbit(x,y) bitop(x,y,^=)
41	greg	1.1
42	greg	2.3	FONT ourfont; / our font */
43	greg	1.1
44			typedef struct line {
45			char s; / line w/o LF */
46	greg	2.4	short sp; / character spacing */
47	greg	1.1	struct line next; / next line up */
48			} LINE;
49
50			LINE ourtext; / our text */
51			int nlines, maxline; /* text dimensions */
52	greg	2.4	int maxwidth; /* maximum line width (dvi) */
53	greg	1.1
54
55			main(argc, argv)
56			int argc;
57			char *argv[];
58			{
59			int an;
60	schorsch	2.19	SET_FILE_BINARY(stdout);
61	greg	1.1	for (an = 1; an < argc && argv[an][0] == '-'; an++)
62			switch (argv[an][1]) {
63			case 'c': /* color */
64			switch (argv[an][2]) {
65			case 'f': /* foreground */
66	greg	2.5	setcolor(fgcolor, atof(argv[an+1]),
67	greg	1.1	atof(argv[an+2]),
68			atof(argv[an+3]));
69			an += 3;
70			break;
71			case 'b': /* background */
72	greg	2.5	setcolor(bgcolor, atof(argv[an+1]),
73	greg	1.1	atof(argv[an+2]),
74			atof(argv[an+3]));
75			an += 3;
76			break;
77			default:
78			goto unkopt;
79			}
80			break;
81			case 'f': /* font */
82			fontfile = argv[++an];
83			break;
84			case 'd': /* direction */
85			switch (argv[an][2]) {
86			case 'r': /* right */
87			case 'u': /* up */
88			case 'l': /* left */
89			case 'd': /* down */
90			direct = argv[an][2];
91			break;
92			default:
93			goto unkopt;
94			}
95			break;
96	greg	2.9	case 'x': /* x resolution */
97			xsiz = atoi(argv[++an])*SSS;
98			break;
99			case 'y':
100			ysiz = atoi(argv[++an])*SSS;
101			break;
102	greg	1.1	case 'h': /* height of characters */
103	greg	2.5	cheight = atoi(argv[++an])*SSS;
104	greg	1.1	break;
105			case 'a': /* aspect ratio */
106			aspect = atof(argv[++an]);
107			break;
108	greg	2.6	case 's': /* spacing */
109			spacing = atof(argv[++an]);
110			break;
111	greg	1.1	default:;
112			unkopt:
113			fprintf(stderr, "%s: unknown option: %s\n",
114			argv[0], argv[an]);
115			exit(1);
116			}
117	greg	2.4	/* load font file */
118			ourfont = getfont(fontfile);
119	greg	1.1	/* get text */
120			if (an == argc)
121			gettext(stdin);
122			else
123			arg_text(argc-an, argv+an);
124
125			/* create bit map */
126			makemap();
127			/* convert text to bitmap */
128			maptext();
129			/* print header */
130	greg	2.16	newheader("RADIANCE", stdout);
131	greg	1.1	printargs(argc, argv, stdout);
132	greg	1.3	fputformat(COLRFMT, stdout);
133			putchar('\n');
134	greg	1.1	/* write out bitmap */
135			writemap(stdout);
136
137			exit(0);
138			}
139
140
141			makemap() /* create the bit map */
142			{
143	greg	2.13	double pictaspect;
144	greg	2.9
145	greg	1.1	if (direct == 'r' \|\| direct == 'l') {
146	greg	2.11	if (xsiz <= 0) {
147	greg	2.9	cwidth = cheight/aspect + 0.5;
148			xsiz = (long)maxwidth*cwidth >> 8;
149			ysiz = nlines*cheight;
150	greg	2.10	} else if (aspect > FTINY) {
151	greg	2.11	if (ysiz <= 0)
152			ysiz = cheight*nlines;
153	greg	2.9	pictaspect = 256nlinesaspect/maxwidth;
154			if (pictaspect*xsiz < ysiz)
155			ysiz = pictaspect*xsiz + 0.5;
156			else
157			xsiz = ysiz/pictaspect + 0.5;
158			cheight = ysiz/nlines;
159	greg	2.14	cwidth = cheight/aspect;
160	greg	2.10	} else {
161	greg	2.11	if (ysiz <= 0)
162			ysiz = cheight*nlines;
163	greg	2.10	pictaspect = (double)ysiz/xsiz;
164			aspect = pictaspectmaxwidth/(256nlines);
165			cheight = ysiz/nlines;
166	greg	2.14	cwidth = cheight/aspect;
167	greg	2.9	}
168	greg	1.1	} else { /* reverse orientation */
169	greg	2.11	if (ysiz <= 0) {
170	greg	2.9	cwidth = cheight/aspect + 0.5;
171			xsiz = nlines*cheight;
172			ysiz = (long)maxwidth*cwidth >> 8;
173	greg	2.10	} else if (aspect > FTINY) {
174	greg	2.11	if (xsiz <= 0)
175			xsiz = cheight*nlines;
176	greg	2.9	pictaspect = maxwidth/(256nlinesaspect);
177			if (pictaspect*xsiz < ysiz)
178			ysiz = pictaspect*xsiz + 0.5;
179			else
180			xsiz = ysiz/pictaspect + 0.5;
181	greg	2.10	cheight = xsiz/nlines;
182	greg	2.14	cwidth = cheight/aspect;
183	greg	2.10	} else {
184	greg	2.11	if (xsiz <= 0)
185			xsiz = cheight*nlines;
186	greg	2.10	pictaspect = (double)ysiz/xsiz;
187			aspect = maxwidth/(256nlinespictaspect);
188	greg	2.9	cheight = xsiz/nlines;
189	greg	2.14	cwidth = cheight/aspect;
190	greg	2.9	}
191	greg	1.1	}
192	greg	2.5	if (xsiz % SSS)
193			xsiz += SSS - xsiz%SSS;
194			if (ysiz % SSS)
195			ysiz += SSS - ysiz%SSS;
196	greg	1.1	xdim = (xsiz+7)/8;
197	greg	2.8	ourbitmap = (BYTE )bmalloc(ysizxdim);
198	greg	2.5	if (ourbitmap == NULL)
199			error(SYSTEM, "Out of memory in makemap");
200	greg	2.8	bzero((char )ourbitmap, ysizxdim);
201	greg	1.1	}
202
203
204			gettext(fp) /* get text from a file */
205			FILE *fp;
206			{
207			char buf[MAXLINE];
208			register LINE *curl;
209			int len;
210
211			maxline = 0;
212	greg	2.4	maxwidth = 0;
213	greg	1.1	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	greg	2.18	curl->s = (char *)malloc(len);
220	greg	2.4	curl->sp = (short )malloc(sizeof(short)len--);
221			if (curl->s == NULL \| curl->sp == NULL)
222	greg	1.1	goto memerr;
223	greg	2.4	if (len > maxline)
224			maxline = len;
225	greg	1.1	strncpy(curl->s, buf, len);
226			curl->s[len] = '\0';
227	greg	2.7	if (spacing < -1./256.)
228	greg	2.6	len = squeeztext(curl->sp, curl->s, ourfont,
229	greg	2.14	(int)(spacing*-256.));
230	greg	2.7	else if (spacing > 1./256.)
231	greg	2.6	len = proptext(curl->sp, curl->s, ourfont,
232	greg	2.14	(int)(spacing*256.), 3);
233	greg	2.6	else
234			len = uniftext(curl->sp, curl->s, ourfont);
235	greg	2.4	if (len > maxwidth)
236			maxwidth = len;
237	greg	1.1	curl->next = ourtext;
238			ourtext = curl;
239			nlines++;
240			}
241			return;
242			memerr:
243	greg	2.5	error(SYSTEM, "Out of memory in gettext");
244	greg	1.1	}
245
246
247			arg_text(ac, av) /* get text from arguments */
248			int ac;
249			char *av[];
250			{
251			register char *cp;
252
253			ourtext = (LINE *)malloc(sizeof(LINE));
254			if (ourtext == NULL)
255			goto memerr;
256	greg	2.18	ourtext->s = (char *)malloc(MAXLINE);
257	greg	1.1	if (ourtext->s == NULL)
258			goto memerr;
259			for (cp = ourtext->s; ac-- > 0; av++) {
260			strcpy(cp, *av);
261			cp += strlen(*av);
262			*cp++ = ' ';
263			}
264			*--cp = '\0';
265			ourtext->next = NULL;
266			maxline = strlen(ourtext->s);
267	greg	2.4	ourtext->sp = (short )malloc(sizeof(short)(maxline+1));
268			if (ourtext->sp == NULL)
269			goto memerr;
270	greg	2.14	if (spacing < -1./256.)
271	greg	2.6	maxwidth = squeeztext(ourtext->sp, ourtext->s, ourfont,
272	greg	2.14	(int)(spacing*-256.));
273			else if (spacing > 1./256.)
274	greg	2.6	maxwidth = proptext(ourtext->sp, ourtext->s, ourfont,
275	greg	2.14	(int)(spacing*256.), 3);
276	greg	2.6	else
277			maxwidth = uniftext(ourtext->sp, ourtext->s, ourfont);
278	greg	1.1	nlines = 1;
279			return;
280			memerr:
281	greg	2.5	error(SYSTEM, "Out of memory in arg_text");
282	greg	1.1	}
283
284
285			maptext() /* map our text */
286			{
287			register LINE *curl;
288	greg	2.4	int l, len;
289			register int i, c;
290	greg	1.1
291	greg	2.4	for (l = 0, curl = ourtext; curl != NULL; l += 256, curl = curl->next) {
292			len = strlen(curl->s); c = 0;
293			for (i = 0; i < len; i++) {
294			c += curl->sp[i];
295			mapglyph(ourfont->fg[curl->s[i]&0xff], c, l);
296			}
297			}
298	greg	1.1	}
299
300
301			mapglyph(gl, tx0, ty0) /* convert a glyph */
302	greg	2.3	GLYPH *gl;
303	greg	1.1	int tx0, ty0;
304			{
305			int n;
306	greg	2.3	register GORD *gp;
307	greg	1.1	int p0[2], p1[2];
308
309			if (gl == NULL)
310			return;
311
312	greg	2.3	n = gl->nverts;
313			gp = gvlist(gl);
314			mapcoord(p0, gp[2n-2]+tx0, gp[2n-1]+ty0);
315	greg	1.1	while (n--) {
316	greg	2.3	mapcoord(p1, gp[0]+tx0, gp[1]+ty0);
317	greg	1.1	mapedge(p0[0], p0[1], p1[0]-p0[0], p1[1]-p0[1]);
318			p0[0] = p1[0]; p0[1] = p1[1];
319	greg	2.3	gp += 2;
320	greg	1.1	}
321			}
322
323
324			mapcoord(p, tx, ty) /* map text to picture coordinates */
325			int p[2], tx, ty;
326			{
327			tx = (long)tx*cwidth >> 8;
328			ty = (long)ty*cheight >> 8;
329
330			switch (direct) {
331			case 'r': /* right */
332			p[0] = tx;
333			p[1] = ty;
334			return;
335			case 'u': /* up */
336			p[0] = xsiz-1-ty;
337			p[1] = tx;
338			return;
339			case 'l': /* left */
340			p[0] = xsiz-1-tx;
341			p[1] = ysiz-1-ty;
342			return;
343			case 'd': /* down */
344			p[0] = ty;
345			p[1] = ysiz-1-tx;
346			return;
347			}
348			}
349
350
351			mapedge(x, y, run, rise) /* map an edge */
352			register int x, y;
353			int run, rise;
354			{
355			int xstep;
356			int rise2, run2;
357			int n;
358
359			if (rise == 0)
360			return;
361			/* always draw up */
362			if (rise < 0) {
363			x += run;
364			y += rise;
365			rise = -rise;
366			run = -run;
367			}
368			if (run < 0) {
369			xstep = -1;
370			run = -run;
371			} else
372			xstep = 1;
373			n = rise;
374			run2 = rise2 = 0;
375			while (n)
376			if (rise2 >= run2) {
377			tglbit(x, y);
378			n--;
379			y++;
380			run2 += run;
381			} else {
382			x += xstep;
383			rise2 += rise;
384			}
385			}
386
387
388			writemap(fp) /* write out bitmap */
389			FILE *fp;
390			{
391	greg	2.5	COLR pixval[SSSSSS+1]; / possible pixel values */
392			COLOR ctmp0, ctmp1;
393	greg	2.13	double d;
394	greg	1.1	COLR *scanout;
395	greg	2.5	int x, y;
396			register int i, j;
397			int cnt;
398	greg	1.1	register int inglyph;
399
400	greg	2.5	fprintf(fp, "-Y %d +X %d\n", ysiz/SSS, xsiz/SSS);
401	greg	1.1
402	greg	2.5	scanout = (COLR )malloc(xsiz/SSSsizeof(COLR));
403			if (scanout == NULL)
404			error(SYSTEM, "Out of memory in writemap");
405			for (i = 0; i <= SSSSSS; i++) { / compute possible values */
406			copycolor(ctmp0, fgcolor);
407			d = (double)i/(SSS*SSS);
408			scalecolor(ctmp0, d);
409			copycolor(ctmp1, bgcolor);
410			d = 1.0 - d;
411			scalecolor(ctmp1, d);
412			addcolor(ctmp0, ctmp1);
413			setcolr(pixval[i], colval(ctmp0,RED),
414			colval(ctmp0,GRN), colval(ctmp0,BLU));
415	greg	1.1	}
416	greg	2.5	for (y = ysiz/SSS-1; y >= 0; y--) {
417	greg	1.1	inglyph = 0;
418	greg	2.5	for (x = 0; x < xsiz/SSS; x++) {
419			cnt = 0;
420			for (j = 0; j < SSS; j++)
421			for (i = 0; i < SSS; i++) {
422			if (tstbit(xSSS+i, ySSS+j))
423			inglyph ^= 1<<j;
424			if (inglyph & 1<<j)
425			cnt++;
426			}
427			copycolr(scanout[x], pixval[cnt]);
428	greg	1.1	}
429	greg	2.5	if (fwritecolrs(scanout, xsiz/SSS, fp) < 0) {
430	greg	1.1	fprintf(stderr, "write error in writemap\n");
431			exit(1);
432			}
433			}
434	greg	2.18	free((void *)scanout);
435	greg	1.1	}