src/px/psign.c

#ifndef lint
static const char       RCSid[] = "$Id: psign.c,v 2.24 2003/10/22 02:06:35 greg Exp $";
#endif
/*
 *  psign.c - produce picture from text.
 *
 *      7/1/87
 */

#include  "copyright.h"

#include  <string.h>

#include  "platform.h"
#include  "standard.h"
#include  "resolu.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) */

static void makemap(void);
static void gettext(FILE  *fp);
static void arg_text(int  ac, char  *av[]);
static void maptext(void);
static void mapglyph(GLYPH  *gl, int  tx0, int  ty0);
static void mapcoord(int  p[2], int  tx, int  ty);
static void mapedge(int  x, int  y, int  run, int  rise);
static void writemap(FILE  *fp);


int
main(
        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);
}


static void
makemap(void)                   /* 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);
}


static void
gettext(                        /* 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");
}


static void
arg_text(                       /* 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");
}


static void
maptext(void)                   /* 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);
                }
        }
}


static void
mapglyph(               /* convert a glyph */
        GLYPH  *gl,
        int  tx0,
        int  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;
        }
}


static void
mapcoord(               /* map text to picture coordinates */
        int  p[2],
        int  tx,
        int  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;
        }
}


static void
mapedge(                /* map an edge */
        register int  x,
        register int  y,
        int  run,
        int  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;
                }
}


static void
writemap(                       /* 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:	2.25
Committed:	Sun Mar 28 20:33:14 2004 UTC (21 years, 7 months ago) by schorsch
Content type:	text/plain
Branch:	MAIN
CVS Tags:	rad3R8, rad3R7P2, rad3R7P1, rad3R6P1, rad3R6
Changes since 2.24:	+52 -21 lines
Log Message:	Continued ANSIfication, and other fixes and clarifications.
#	User	Rev	Content
1	greg	1.1	#ifndef lint
2	schorsch	2.25	static const char RCSid[] = "$Id: psign.c,v 2.24 2003/10/22 02:06:35 greg 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	2.24	#include "platform.h"
15	greg	2.3	#include "standard.h"
16	schorsch	2.25	#include "resolu.h"
17	greg	1.1	#include "color.h"
18	greg	2.3	#include "font.h"
19
20	greg	2.13	#ifndef SSS
21			#define SSS 3 /* super-sample size */
22	greg	2.5	#endif
23	greg	2.4
24	greg	2.13	#define MAXLINE 512 /* longest allowable line */
25	greg	1.1
26	greg	1.2	char fontfile = "helvet.fnt"; / our font file */
27	greg	1.1
28	greg	2.5	COLOR bgcolor = WHTCOLOR; /* background color */
29			COLOR fgcolor = BLKCOLOR; /* foreground color */
30	greg	1.1
31			int direct = 'r'; /* direction (right, up, left, down) */
32
33	greg	2.5	int cheight = 32SSS; / character height */
34	greg	2.13	double aspect = 1.67; /* height/width character aspect */
35			double spacing = 0.0; /* character spacing */
36	greg	1.1	int cwidth; /* computed character width */
37
38			unsigned char ourbitmap; / our output bitmap */
39			int xsiz, ysiz; /* bitmap dimensions */
40			int xdim; /* size of horizontal scan (bytes) */
41	greg	2.21
42			/* conflicting def's in param.h */
43			#undef tstbit
44			#undef setbit
45			#undef clrbit
46			#undef tglbit
47	greg	1.1
48	greg	2.13	#define bitop(x,y,op) (ourbitmap[(y)*xdim+((x)>>3)] op (1<<((x)&7)))
49			#define tstbit(x,y) bitop(x,y,&)
50			#define setbit(x,y) bitop(x,y,\|=)
51			#define clrbit(x,y) bitop(x,y,&=~)
52			#define tglbit(x,y) bitop(x,y,^=)
53	greg	1.1
54	greg	2.3	FONT ourfont; / our font */
55	greg	1.1
56			typedef struct line {
57			char s; / line w/o LF */
58	greg	2.4	short sp; / character spacing */
59	greg	1.1	struct line next; / next line up */
60			} LINE;
61
62			LINE ourtext; / our text */
63			int nlines, maxline; /* text dimensions */
64	greg	2.4	int maxwidth; /* maximum line width (dvi) */
65	greg	1.1
66	schorsch	2.25	static void makemap(void);
67			static void gettext(FILE *fp);
68			static void arg_text(int ac, char *av[]);
69			static void maptext(void);
70			static void mapglyph(GLYPH *gl, int tx0, int ty0);
71			static void mapcoord(int p[2], int tx, int ty);
72			static void mapedge(int x, int y, int run, int rise);
73			static void writemap(FILE *fp);
74	greg	1.1
75	schorsch	2.25
76			int
77			main(
78			int argc,
79			char *argv[]
80			)
81	greg	1.1	{
82			int an;
83	schorsch	2.19	SET_FILE_BINARY(stdout);
84	greg	1.1	for (an = 1; an < argc && argv[an][0] == '-'; an++)
85			switch (argv[an][1]) {
86			case 'c': /* color */
87			switch (argv[an][2]) {
88			case 'f': /* foreground */
89	greg	2.5	setcolor(fgcolor, atof(argv[an+1]),
90	greg	1.1	atof(argv[an+2]),
91			atof(argv[an+3]));
92			an += 3;
93			break;
94			case 'b': /* background */
95	greg	2.5	setcolor(bgcolor, atof(argv[an+1]),
96	greg	1.1	atof(argv[an+2]),
97			atof(argv[an+3]));
98			an += 3;
99			break;
100			default:
101			goto unkopt;
102			}
103			break;
104			case 'f': /* font */
105			fontfile = argv[++an];
106			break;
107			case 'd': /* direction */
108			switch (argv[an][2]) {
109			case 'r': /* right */
110			case 'u': /* up */
111			case 'l': /* left */
112			case 'd': /* down */
113			direct = argv[an][2];
114			break;
115			default:
116			goto unkopt;
117			}
118			break;
119	greg	2.9	case 'x': /* x resolution */
120			xsiz = atoi(argv[++an])*SSS;
121			break;
122			case 'y':
123			ysiz = atoi(argv[++an])*SSS;
124			break;
125	greg	1.1	case 'h': /* height of characters */
126	greg	2.5	cheight = atoi(argv[++an])*SSS;
127	greg	1.1	break;
128			case 'a': /* aspect ratio */
129			aspect = atof(argv[++an]);
130			break;
131	greg	2.6	case 's': /* spacing */
132			spacing = atof(argv[++an]);
133			break;
134	greg	1.1	default:;
135			unkopt:
136			fprintf(stderr, "%s: unknown option: %s\n",
137			argv[0], argv[an]);
138			exit(1);
139			}
140	greg	2.4	/* load font file */
141			ourfont = getfont(fontfile);
142	greg	1.1	/* get text */
143			if (an == argc)
144			gettext(stdin);
145			else
146			arg_text(argc-an, argv+an);
147
148			/* create bit map */
149			makemap();
150			/* convert text to bitmap */
151			maptext();
152			/* print header */
153	greg	2.16	newheader("RADIANCE", stdout);
154	greg	1.1	printargs(argc, argv, stdout);
155	greg	1.3	fputformat(COLRFMT, stdout);
156			putchar('\n');
157	greg	1.1	/* write out bitmap */
158			writemap(stdout);
159
160			exit(0);
161			}
162
163
164	schorsch	2.25	static void
165			makemap(void) /* create the bit map */
166	greg	1.1	{
167	greg	2.13	double pictaspect;
168	greg	2.9
169	greg	1.1	if (direct == 'r' \|\| direct == 'l') {
170	greg	2.11	if (xsiz <= 0) {
171	greg	2.9	cwidth = cheight/aspect + 0.5;
172			xsiz = (long)maxwidth*cwidth >> 8;
173			ysiz = nlines*cheight;
174	greg	2.10	} else if (aspect > FTINY) {
175	greg	2.11	if (ysiz <= 0)
176			ysiz = cheight*nlines;
177	greg	2.9	pictaspect = 256nlinesaspect/maxwidth;
178			if (pictaspect*xsiz < ysiz)
179			ysiz = pictaspect*xsiz + 0.5;
180			else
181			xsiz = ysiz/pictaspect + 0.5;
182			cheight = ysiz/nlines;
183	greg	2.14	cwidth = cheight/aspect;
184	greg	2.10	} else {
185	greg	2.11	if (ysiz <= 0)
186			ysiz = cheight*nlines;
187	greg	2.10	pictaspect = (double)ysiz/xsiz;
188			aspect = pictaspectmaxwidth/(256nlines);
189			cheight = ysiz/nlines;
190	greg	2.14	cwidth = cheight/aspect;
191	greg	2.9	}
192	greg	1.1	} else { /* reverse orientation */
193	greg	2.11	if (ysiz <= 0) {
194	greg	2.9	cwidth = cheight/aspect + 0.5;
195			xsiz = nlines*cheight;
196			ysiz = (long)maxwidth*cwidth >> 8;
197	greg	2.10	} else if (aspect > FTINY) {
198	greg	2.11	if (xsiz <= 0)
199			xsiz = cheight*nlines;
200	greg	2.9	pictaspect = maxwidth/(256nlinesaspect);
201			if (pictaspect*xsiz < ysiz)
202			ysiz = pictaspect*xsiz + 0.5;
203			else
204			xsiz = ysiz/pictaspect + 0.5;
205	greg	2.10	cheight = xsiz/nlines;
206	greg	2.14	cwidth = cheight/aspect;
207	greg	2.10	} else {
208	greg	2.11	if (xsiz <= 0)
209			xsiz = cheight*nlines;
210	greg	2.10	pictaspect = (double)ysiz/xsiz;
211			aspect = maxwidth/(256nlinespictaspect);
212	greg	2.9	cheight = xsiz/nlines;
213	greg	2.14	cwidth = cheight/aspect;
214	greg	2.9	}
215	greg	1.1	}
216	greg	2.5	if (xsiz % SSS)
217			xsiz += SSS - xsiz%SSS;
218			if (ysiz % SSS)
219			ysiz += SSS - ysiz%SSS;
220	greg	1.1	xdim = (xsiz+7)/8;
221	greg	2.8	ourbitmap = (BYTE )bmalloc(ysizxdim);
222	greg	2.5	if (ourbitmap == NULL)
223			error(SYSTEM, "Out of memory in makemap");
224	schorsch	2.22	memset((char )ourbitmap, '\0', ysizxdim);
225	greg	1.1	}
226
227
228	schorsch	2.25	static void
229			gettext( /* get text from a file */
230			FILE *fp
231			)
232	greg	1.1	{
233			char buf[MAXLINE];
234			register LINE *curl;
235			int len;
236
237			maxline = 0;
238	greg	2.4	maxwidth = 0;
239	greg	1.1	nlines = 0;
240			while (fgets(buf, MAXLINE, fp) != NULL) {
241			curl = (LINE *)malloc(sizeof(LINE));
242			if (curl == NULL)
243			goto memerr;
244			len = strlen(buf);
245	greg	2.18	curl->s = (char *)malloc(len);
246	greg	2.4	curl->sp = (short )malloc(sizeof(short)len--);
247	schorsch	2.23	if ((curl->s == NULL) \| (curl->sp == NULL))
248	greg	1.1	goto memerr;
249	greg	2.4	if (len > maxline)
250			maxline = len;
251	greg	1.1	strncpy(curl->s, buf, len);
252			curl->s[len] = '\0';
253	greg	2.7	if (spacing < -1./256.)
254	greg	2.6	len = squeeztext(curl->sp, curl->s, ourfont,
255	greg	2.14	(int)(spacing*-256.));
256	greg	2.7	else if (spacing > 1./256.)
257	greg	2.6	len = proptext(curl->sp, curl->s, ourfont,
258	greg	2.14	(int)(spacing*256.), 3);
259	greg	2.6	else
260			len = uniftext(curl->sp, curl->s, ourfont);
261	greg	2.4	if (len > maxwidth)
262			maxwidth = len;
263	greg	1.1	curl->next = ourtext;
264			ourtext = curl;
265			nlines++;
266			}
267			return;
268			memerr:
269	greg	2.5	error(SYSTEM, "Out of memory in gettext");
270	greg	1.1	}
271
272
273	schorsch	2.25	static void
274			arg_text( /* get text from arguments */
275			int ac,
276			char *av[]
277			)
278	greg	1.1	{
279			register char *cp;
280
281			ourtext = (LINE *)malloc(sizeof(LINE));
282			if (ourtext == NULL)
283			goto memerr;
284	greg	2.18	ourtext->s = (char *)malloc(MAXLINE);
285	greg	1.1	if (ourtext->s == NULL)
286			goto memerr;
287			for (cp = ourtext->s; ac-- > 0; av++) {
288			strcpy(cp, *av);
289			cp += strlen(*av);
290			*cp++ = ' ';
291			}
292			*--cp = '\0';
293			ourtext->next = NULL;
294			maxline = strlen(ourtext->s);
295	greg	2.4	ourtext->sp = (short )malloc(sizeof(short)(maxline+1));
296			if (ourtext->sp == NULL)
297			goto memerr;
298	greg	2.14	if (spacing < -1./256.)
299	greg	2.6	maxwidth = squeeztext(ourtext->sp, ourtext->s, ourfont,
300	greg	2.14	(int)(spacing*-256.));
301			else if (spacing > 1./256.)
302	greg	2.6	maxwidth = proptext(ourtext->sp, ourtext->s, ourfont,
303	greg	2.14	(int)(spacing*256.), 3);
304	greg	2.6	else
305			maxwidth = uniftext(ourtext->sp, ourtext->s, ourfont);
306	greg	1.1	nlines = 1;
307			return;
308			memerr:
309	greg	2.5	error(SYSTEM, "Out of memory in arg_text");
310	greg	1.1	}
311
312
313	schorsch	2.25	static void
314			maptext(void) /* map our text */
315	greg	1.1	{
316			register LINE *curl;
317	greg	2.4	int l, len;
318			register int i, c;
319	greg	1.1
320	greg	2.4	for (l = 0, curl = ourtext; curl != NULL; l += 256, curl = curl->next) {
321			len = strlen(curl->s); c = 0;
322			for (i = 0; i < len; i++) {
323			c += curl->sp[i];
324			mapglyph(ourfont->fg[curl->s[i]&0xff], c, l);
325			}
326			}
327	greg	1.1	}
328
329
330	schorsch	2.25	static void
331			mapglyph( /* convert a glyph */
332			GLYPH *gl,
333			int tx0,
334			int ty0
335			)
336	greg	1.1	{
337			int n;
338	greg	2.3	register GORD *gp;
339	greg	1.1	int p0[2], p1[2];
340
341			if (gl == NULL)
342			return;
343
344	greg	2.3	n = gl->nverts;
345			gp = gvlist(gl);
346			mapcoord(p0, gp[2n-2]+tx0, gp[2n-1]+ty0);
347	greg	1.1	while (n--) {
348	greg	2.3	mapcoord(p1, gp[0]+tx0, gp[1]+ty0);
349	greg	1.1	mapedge(p0[0], p0[1], p1[0]-p0[0], p1[1]-p0[1]);
350			p0[0] = p1[0]; p0[1] = p1[1];
351	greg	2.3	gp += 2;
352	greg	1.1	}
353			}
354
355
356	schorsch	2.25	static void
357			mapcoord( /* map text to picture coordinates */
358			int p[2],
359			int tx,
360			int ty
361			)
362	greg	1.1	{
363			tx = (long)tx*cwidth >> 8;
364			ty = (long)ty*cheight >> 8;
365
366			switch (direct) {
367			case 'r': /* right */
368			p[0] = tx;
369			p[1] = ty;
370			return;
371			case 'u': /* up */
372			p[0] = xsiz-1-ty;
373			p[1] = tx;
374			return;
375			case 'l': /* left */
376			p[0] = xsiz-1-tx;
377			p[1] = ysiz-1-ty;
378			return;
379			case 'd': /* down */
380			p[0] = ty;
381			p[1] = ysiz-1-tx;
382			return;
383			}
384			}
385
386
387	schorsch	2.25	static void
388			mapedge( /* map an edge */
389			register int x,
390			register int y,
391			int run,
392			int rise
393			)
394	greg	1.1	{
395			int xstep;
396			int rise2, run2;
397			int n;
398
399			if (rise == 0)
400			return;
401			/* always draw up */
402			if (rise < 0) {
403			x += run;
404			y += rise;
405			rise = -rise;
406			run = -run;
407			}
408			if (run < 0) {
409			xstep = -1;
410			run = -run;
411			} else
412			xstep = 1;
413			n = rise;
414			run2 = rise2 = 0;
415			while (n)
416			if (rise2 >= run2) {
417			tglbit(x, y);
418			n--;
419			y++;
420			run2 += run;
421			} else {
422			x += xstep;
423			rise2 += rise;
424			}
425			}
426
427
428	schorsch	2.25	static void
429			writemap( /* write out bitmap */
430			FILE *fp
431			)
432	greg	1.1	{
433	greg	2.5	COLR pixval[SSSSSS+1]; / possible pixel values */
434			COLOR ctmp0, ctmp1;
435	greg	2.13	double d;
436	greg	1.1	COLR *scanout;
437	greg	2.5	int x, y;
438			register int i, j;
439			int cnt;
440	greg	1.1	register int inglyph;
441
442	greg	2.5	fprintf(fp, "-Y %d +X %d\n", ysiz/SSS, xsiz/SSS);
443	greg	1.1
444	greg	2.5	scanout = (COLR )malloc(xsiz/SSSsizeof(COLR));
445			if (scanout == NULL)
446			error(SYSTEM, "Out of memory in writemap");
447			for (i = 0; i <= SSSSSS; i++) { / compute possible values */
448			copycolor(ctmp0, fgcolor);
449			d = (double)i/(SSS*SSS);
450			scalecolor(ctmp0, d);
451			copycolor(ctmp1, bgcolor);
452			d = 1.0 - d;
453			scalecolor(ctmp1, d);
454			addcolor(ctmp0, ctmp1);
455			setcolr(pixval[i], colval(ctmp0,RED),
456			colval(ctmp0,GRN), colval(ctmp0,BLU));
457	greg	1.1	}
458	greg	2.5	for (y = ysiz/SSS-1; y >= 0; y--) {
459	greg	1.1	inglyph = 0;
460	greg	2.5	for (x = 0; x < xsiz/SSS; x++) {
461			cnt = 0;
462			for (j = 0; j < SSS; j++)
463			for (i = 0; i < SSS; i++) {
464			if (tstbit(xSSS+i, ySSS+j))
465			inglyph ^= 1<<j;
466			if (inglyph & 1<<j)
467			cnt++;
468			}
469			copycolr(scanout[x], pixval[cnt]);
470	greg	1.1	}
471	greg	2.5	if (fwritecolrs(scanout, xsiz/SSS, fp) < 0) {
472	greg	1.1	fprintf(stderr, "write error in writemap\n");
473			exit(1);
474			}
475			}
476	greg	2.18	free((void *)scanout);
477	greg	1.1	}