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#include "otypes.h" |
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|
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#include "font.h" |
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|
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/* |
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* A text pattern is specified as the text (a file or line), |
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* the upper left anchor point, the right motion vector, the down |
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#define fndx(m) ((m)->otype==MIX_TEXT ? 2 : 0) |
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#define tndx(m) ((m)->otype==MIX_TEXT ? 3 : 1) |
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|
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extern char *libpath; /* library search path */ |
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|
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typedef unsigned char GLYPH; |
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|
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typedef struct font { |
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GLYPH *fg[256]; /* font glyphs */ |
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char *name; /* font file name */ |
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struct font *next; /* next font in list */ |
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} FONT; |
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|
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typedef struct tline { |
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struct tline *next; /* pointer to next line */ |
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/* followed by the string */ |
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TLINE tl; /* line list */ |
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} TEXT; |
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|
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extern char *libpath; |
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|
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extern char *fgetword(); |
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|
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TEXT *gettext(); |
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|
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TLINE *tlalloc(); |
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|
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FONT *getfont(); |
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|
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static FONT *fontlist = NULL; /* our font list */ |
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|
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|
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text(m, r) |
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register OBJREC *m; |
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RAY *r; |
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{ |
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< |
double v[3]; |
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FVECT v; |
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int foreground; |
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/* get transformed position */ |
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if (r->rox != NULL) |
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{ |
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register TEXT *tp; |
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register TLINE *tlp; |
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double v[3], y, x; |
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FVECT v; |
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double y, x; |
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int col; |
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register int lno; |
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/* first, compute position in text */ |
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break; |
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if (tlp == NULL || col >= strlen(TLSTR(tlp))) |
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return(0); |
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< |
return(inglyph(x, y, tp->f->fg[TLSTR(tlp)[col]])); |
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> |
return(inglyph(x, y, tp->f->fg[TLSTR(tlp)[col]&0xff])); |
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} |
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|
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|
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FONT * |
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getfont(fname) /* return font fname */ |
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char *fname; |
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{ |
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char buf[16]; |
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FILE *fp; |
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char *pathname, *err; |
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int gn, ngv, gv; |
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register GLYPH *g; |
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register FONT *f; |
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|
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for (f = fontlist; f != NULL; f = f->next) |
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if (!strcmp(f->name, fname)) |
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return(f); |
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/* load the font file */ |
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if ((pathname = getpath(fname, libpath, R_OK)) == NULL) { |
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sprintf(errmsg, "cannot find font file \"%s\"", fname); |
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error(USER, errmsg); |
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} |
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f = (FONT *)calloc(1, sizeof(FONT)); |
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if (f == NULL) |
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goto memerr; |
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f->name = savestr(fname); |
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if ((fp = fopen(pathname, "r")) == NULL) { |
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sprintf(errmsg, "cannot open font file \"%s\"", |
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pathname); |
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error(SYSTEM, errmsg); |
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} |
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while (fgetword(buf,sizeof(buf),fp) != NULL) { /* get each glyph */ |
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if (!isint(buf)) |
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goto nonint; |
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gn = atoi(buf); |
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if (gn < 0 || gn > 255) { |
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err = "illegal"; |
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goto fonterr; |
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} |
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if (f->fg[gn] != NULL) { |
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err = "duplicate"; |
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goto fonterr; |
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} |
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if (fgetword(buf,sizeof(buf),fp) == NULL || !isint(buf) || |
| 318 |
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(ngv = atoi(buf)) < 0 || ngv > 255) { |
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err = "bad # vertices for"; |
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goto fonterr; |
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} |
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g = (GLYPH *)malloc((2*ngv+1)*sizeof(GLYPH)); |
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if (g == NULL) |
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goto memerr; |
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f->fg[gn] = g; |
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*g++ = ngv; |
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ngv *= 2; |
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while (ngv--) { |
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if (fgetword(buf,sizeof(buf),fp) == NULL || |
| 330 |
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!isint(buf) || |
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(gv = atoi(buf)) < 0 || gv > 255) { |
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err = "bad vertex for"; |
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goto fonterr; |
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} |
| 335 |
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*g++ = gv; |
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} |
| 337 |
– |
} |
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fclose(fp); |
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f->next = fontlist; |
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return(fontlist = f); |
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nonint: |
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sprintf(errmsg, "non-integer in font file \"%s\"", pathname); |
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error(USER, errmsg); |
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– |
fonterr: |
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sprintf(errmsg, "%s character (%d) in font file \"%s\"", |
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err, gn, pathname); |
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error(USER, errmsg); |
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memerr: |
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error(SYSTEM, "out of memory in fontglyph"); |
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} |
| 351 |
– |
|
| 352 |
– |
|
| 268 |
|
inglyph(x, y, gl) /* (x,y) within font glyph gl? */ |
| 269 |
|
double x, y; |
| 270 |
< |
GLYPH *gl; |
| 270 |
> |
register GLYPH *gl; |
| 271 |
|
{ |
| 272 |
|
int n, ncross; |
| 273 |
|
int xlb, ylb; |
| 274 |
< |
register GLYPH *p0, *p1; |
| 274 |
> |
register GORD *p0, *p1; |
| 275 |
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|
| 276 |
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if (gl == NULL) |
| 277 |
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return(0); |
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y *= 256.0; |
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|
xlb = x + 0.5; |
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ylb = y + 0.5; |
| 282 |
< |
n = *gl++; /* get # of vertices */ |
| 283 |
< |
p0 = gl + 2*(n-1); /* connect last to first */ |
| 284 |
< |
p1 = gl; |
| 282 |
> |
if (gl->left > xlb || gl->right <= xlb || |
| 283 |
> |
gl->bottom > ylb || gl->top <= ylb) |
| 284 |
> |
return(0); /* outside extent */ |
| 285 |
> |
n = gl->nverts; /* get # of vertices */ |
| 286 |
> |
p0 = gvlist(gl) + 2*(n-1); /* connect last to first */ |
| 287 |
> |
p1 = gvlist(gl); |
| 288 |
|
ncross = 0; |
| 289 |
|
/* positive x axis cross test */ |
| 290 |
|
while (n--) { |
