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/* Copyright (c) 1990 Regents of the University of California */ |
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> |
/* Copyright (c) 1991 Regents of the University of California */ |
| 2 |
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#ifndef lint |
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static char SCCSid[] = "$SunId$ LBL"; |
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#include "otypes.h" |
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|
| 17 |
+ |
#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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> |
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; |
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|
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< |
typedef unsigned char GLYPH; |
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> |
#define TLSTR(l) ((char *)((l)+1)) |
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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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> |
typedef struct { |
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> |
FVECT right, down; /* right and down unit vectors */ |
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> |
FONT *f; /* our font */ |
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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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< |
extern GLYPH *getglyph(); |
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TEXT *gettext(); |
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|
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extern FONT *getfont(); |
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> |
TLINE *tlalloc(); |
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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], y, x; |
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int col, lno; |
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FVECT v; |
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int foreground; |
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GLYPH *g; |
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register double *ap; |
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< |
|
| 87 |
< |
if (m->oargs.nsargs - tndx(m) < 1 || |
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m->oargs.nfargs != (m->otype == PAT_BTEXT ? 11 : |
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m->otype == PAT_CTEXT ? 15 : 9)) |
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objerror(m, USER, "bad # arguments"); |
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|
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/* first, discover position in text */ |
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ap = m->oargs.farg; |
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/* get transformed position */ |
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if (r->rox != NULL) |
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multp3(v, r->rop, r->rox->b.xfm); |
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else |
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VCOPY(v, r->rop); |
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v[0] -= ap[0]; |
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v[1] -= ap[1]; |
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v[2] -= ap[2]; |
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col = x = DOT(v, ap+3) / DOT(ap+3, ap+3); |
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lno = y = DOT(v, ap+6) / DOT(ap+6, ap+6); |
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x -= col; |
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y = (lno+1) - y; |
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/* get the font character, check it */ |
| 106 |
< |
if ((g = getglyph(m, lno, col)) == NULL) |
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foreground = 0; |
| 108 |
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else |
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< |
foreground = inglyph(x, y, g); |
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> |
/* check if we are within a text glyph */ |
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> |
foreground = intext(v, m); |
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/* modify */ |
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if (m->otype == MIX_TEXT) { |
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OBJECT omod; |
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sprintf(errmsg, "undefined modifier \"%s\"", modname); |
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objerror(m, USER, errmsg); |
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} |
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raymixture(r, omod, OVOID, 1.0); |
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raytexture(r, omod); |
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} else if (m->otype == PAT_BTEXT) { |
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if (foreground) |
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scalecolor(r->pcol, ap[9]); |
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scalecolor(r->pcol, m->oargs.farg[9]); |
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else |
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scalecolor(r->pcol, ap[10]); |
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scalecolor(r->pcol, m->oargs.farg[10]); |
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} else { /* PAT_CTEXT */ |
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COLOR cval; |
| 113 |
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if (foreground) |
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setcolor(cval, ap[9], ap[10], ap[11]); |
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setcolor(cval, m->oargs.farg[9], |
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> |
m->oargs.farg[10], |
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m->oargs.farg[11]); |
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else |
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setcolor(cval, ap[12], ap[13], ap[14]); |
| 118 |
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setcolor(cval, m->oargs.farg[12], |
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> |
m->oargs.farg[13], |
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m->oargs.farg[14]); |
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multcolor(r->pcol, cval); |
| 122 |
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} |
| 123 |
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} |
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|
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|
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< |
GLYPH * |
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getglyph(tm, lno, col) /* get a glyph from a text description */ |
| 126 |
> |
TLINE * |
| 127 |
> |
tlalloc(s) /* allocate and assign text line */ |
| 128 |
> |
char *s; |
| 129 |
> |
{ |
| 130 |
> |
extern char *strcpy(); |
| 131 |
> |
register TLINE *tl; |
| 132 |
> |
|
| 133 |
> |
tl = (TLINE *)malloc(sizeof(TLINE)+1+strlen(s)); |
| 134 |
> |
if (tl == NULL) |
| 135 |
> |
error(SYSTEM, "out of memory in tlalloc"); |
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> |
tl->next = NULL; |
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> |
strcpy(TLSTR(tl), s); |
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> |
return(tl); |
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> |
} |
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> |
|
| 141 |
> |
|
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> |
TEXT * |
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> |
gettext(tm) /* get text structure for material */ |
| 144 |
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register OBJREC *tm; |
| 140 |
– |
int lno; |
| 141 |
– |
int col; |
| 145 |
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{ |
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+ |
#define R (tm->oargs.farg+3) |
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+ |
#define D (tm->oargs.farg+6) |
| 148 |
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extern char *strcpy(), *fgets(); |
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+ |
FVECT DxR; |
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double d; |
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FILE *fp; |
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char linbuf[512]; |
| 153 |
+ |
TEXT *t; |
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register int i; |
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< |
register char **txt; |
| 155 |
> |
register TLINE *tlp; |
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register char *s; |
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|
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< |
if (lno < 0 || col < 0) |
| 159 |
< |
return(NULL); |
| 160 |
< |
if (tm->os == NULL) { |
| 161 |
< |
txt = (char **)malloc(2*sizeof(char **)); |
| 162 |
< |
if (txt == NULL) |
| 163 |
< |
goto memerr; |
| 164 |
< |
if (tm->oargs.nsargs - tndx(tm) > 1) { /* single line */ |
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< |
s = linbuf; |
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< |
for (i = tndx(tm)+1; i < tm->oargs.nsargs; i++) { |
| 167 |
< |
strcpy(s, tm->oargs.sarg[i]); |
| 168 |
< |
s += strlen(s); |
| 169 |
< |
*s++ = ' '; |
| 170 |
< |
} |
| 171 |
< |
*--s = '\0'; |
| 172 |
< |
txt[0] = savqstr(linbuf); |
| 173 |
< |
txt[1] = NULL; |
| 174 |
< |
} else { /* text file */ |
| 175 |
< |
if ((s = getpath(tm->oargs.sarg[tndx(tm)], |
| 176 |
< |
libpath, R_OK)) == NULL) { |
| 177 |
< |
sprintf(errmsg, "cannot find text file \"%s\"", |
| 178 |
< |
tm->oargs.sarg[tndx(tm)]); |
| 179 |
< |
error(USER, errmsg); |
| 180 |
< |
} |
| 181 |
< |
if ((fp = fopen(s, "r")) == NULL) { |
| 182 |
< |
sprintf(errmsg, "cannot open text file \"%s\"", |
| 183 |
< |
s); |
| 184 |
< |
error(SYSTEM, errmsg); |
| 177 |
< |
} |
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< |
for (i=0; fgets(linbuf,sizeof(linbuf),fp)!=NULL; i++) { |
| 179 |
< |
s = linbuf + strlen(linbuf) - 1; |
| 180 |
< |
if (*s == '\n') |
| 181 |
< |
*s = '\0'; |
| 182 |
< |
txt=(char **)realloc(txt,(i+2)*sizeof(char **)); |
| 183 |
< |
if (txt == NULL) |
| 184 |
< |
goto memerr; |
| 185 |
< |
txt[i] = savqstr(linbuf); |
| 186 |
< |
} |
| 187 |
< |
txt[i] = NULL; |
| 188 |
< |
fclose(fp); |
| 158 |
> |
if ((t = (TEXT *)tm->os) != NULL) |
| 159 |
> |
return(t); |
| 160 |
> |
/* check arguments */ |
| 161 |
> |
if (tm->oargs.nsargs - tndx(tm) < 1 || |
| 162 |
> |
tm->oargs.nfargs != (tm->otype == PAT_BTEXT ? 11 : |
| 163 |
> |
tm->otype == PAT_CTEXT ? 15 : 9)) |
| 164 |
> |
objerror(tm, USER, "bad # arguments"); |
| 165 |
> |
if ((t = (TEXT *)malloc(sizeof(TEXT))) == NULL) |
| 166 |
> |
error(SYSTEM, "out of memory in gettext"); |
| 167 |
> |
/* compute vectors */ |
| 168 |
> |
fcross(DxR, D, R); |
| 169 |
> |
fcross(t->right, DxR, D); |
| 170 |
> |
d = DOT(D,D)/DOT(t->right,t->right); |
| 171 |
> |
for (i = 0; i < 3; i++) |
| 172 |
> |
t->right[i] *= d; |
| 173 |
> |
fcross(t->down, R, DxR); |
| 174 |
> |
d = DOT(R,R)/DOT(t->down,t->down); |
| 175 |
> |
for (i = 0; i < 3; i++) |
| 176 |
> |
t->down[i] *= d; |
| 177 |
> |
/* get text */ |
| 178 |
> |
tlp = &t->tl; |
| 179 |
> |
if (tm->oargs.nsargs - tndx(tm) > 1) { /* single line */ |
| 180 |
> |
s = linbuf; |
| 181 |
> |
for (i = tndx(tm)+1; i < tm->oargs.nsargs; i++) { |
| 182 |
> |
strcpy(s, tm->oargs.sarg[i]); |
| 183 |
> |
s += strlen(s); |
| 184 |
> |
*s++ = ' '; |
| 185 |
|
} |
| 186 |
< |
tm->os = (char *)txt; |
| 186 |
> |
*--s = '\0'; |
| 187 |
> |
tlp->next = tlalloc(linbuf); |
| 188 |
> |
tlp = tlp->next; |
| 189 |
> |
} else { /* text file */ |
| 190 |
> |
if ((s = getpath(tm->oargs.sarg[tndx(tm)], |
| 191 |
> |
libpath, R_OK)) == NULL) { |
| 192 |
> |
sprintf(errmsg, "cannot find text file \"%s\"", |
| 193 |
> |
tm->oargs.sarg[tndx(tm)]); |
| 194 |
> |
error(USER, errmsg); |
| 195 |
> |
} |
| 196 |
> |
if ((fp = fopen(s, "r")) == NULL) { |
| 197 |
> |
sprintf(errmsg, "cannot open text file \"%s\"", |
| 198 |
> |
s); |
| 199 |
> |
error(SYSTEM, errmsg); |
| 200 |
> |
} |
| 201 |
> |
while (fgets(linbuf, sizeof(linbuf), fp) != NULL) { |
| 202 |
> |
s = linbuf + strlen(linbuf) - 1; |
| 203 |
> |
if (*s == '\n') |
| 204 |
> |
*s = '\0'; |
| 205 |
> |
tlp->next = tlalloc(linbuf); |
| 206 |
> |
tlp = tlp->next; |
| 207 |
> |
} |
| 208 |
> |
fclose(fp); |
| 209 |
|
} |
| 210 |
< |
txt = (char **)tm->os; |
| 211 |
< |
for (i = 0; i < lno; i++) |
| 212 |
< |
if (txt[i] == NULL) |
| 213 |
< |
break; |
| 214 |
< |
if ((s = txt[i]) == NULL || col >= strlen(s)) |
| 215 |
< |
return(NULL); |
| 216 |
< |
else |
| 217 |
< |
return(getfont(tm->oargs.sarg[fndx(tm)])->fg[s[col]]); |
| 200 |
< |
memerr: |
| 201 |
< |
error(SYSTEM, "out of memory in getglyph"); |
| 210 |
> |
tlp->next = NULL; |
| 211 |
> |
/* get the font */ |
| 212 |
> |
t->f = getfont(tm->oargs.sarg[fndx(tm)]); |
| 213 |
> |
/* we're done */ |
| 214 |
> |
tm->os = (char *)t; |
| 215 |
> |
return(t); |
| 216 |
> |
#undef R |
| 217 |
> |
#undef D |
| 218 |
|
} |
| 219 |
|
|
| 220 |
|
|
| 221 |
< |
FONT * |
| 222 |
< |
getfont(fname) /* return font fname */ |
| 207 |
< |
char *fname; |
| 221 |
> |
freetext(m) /* free text structures associated with m */ |
| 222 |
> |
OBJREC *m; |
| 223 |
|
{ |
| 224 |
< |
char buf[16]; |
| 225 |
< |
FILE *fp; |
| 211 |
< |
char *pathname, *err; |
| 212 |
< |
int gn, ngv, gv; |
| 213 |
< |
register GLYPH *g; |
| 214 |
< |
register FONT *f; |
| 224 |
> |
register TEXT *tp; |
| 225 |
> |
register TLINE *tlp; |
| 226 |
|
|
| 227 |
< |
for (f = fontlist; f != NULL; f = f->next) |
| 228 |
< |
if (!strcmp(f->name, fname)) |
| 229 |
< |
return(f); |
| 230 |
< |
/* load the font file */ |
| 231 |
< |
if ((pathname = getpath(fname, libpath, R_OK)) == NULL) { |
| 232 |
< |
sprintf(errmsg, "cannot find font file \"%s\"", fname); |
| 233 |
< |
error(USER, errmsg); |
| 223 |
< |
} |
| 224 |
< |
f = (FONT *)calloc(1, sizeof(FONT)); |
| 225 |
< |
if (f == NULL) |
| 226 |
< |
goto memerr; |
| 227 |
< |
f->name = savestr(fname); |
| 228 |
< |
if ((fp = fopen(pathname, "r")) == NULL) { |
| 229 |
< |
sprintf(errmsg, "cannot open font file \"%s\"", |
| 230 |
< |
pathname); |
| 231 |
< |
error(SYSTEM, errmsg); |
| 232 |
< |
} |
| 233 |
< |
while (fgetword(buf,sizeof(buf),fp) != NULL) { /* get each glyph */ |
| 234 |
< |
if (!isint(buf)) |
| 235 |
< |
goto nonint; |
| 236 |
< |
gn = atoi(buf); |
| 237 |
< |
if (gn < 0 || gn > 255) { |
| 238 |
< |
err = "illegal"; |
| 239 |
< |
goto fonterr; |
| 240 |
< |
} |
| 241 |
< |
if (f->fg[gn] != NULL) { |
| 242 |
< |
err = "duplicate"; |
| 243 |
< |
goto fonterr; |
| 244 |
< |
} |
| 245 |
< |
if (fgetword(buf,sizeof(buf),fp) == NULL || !isint(buf) || |
| 246 |
< |
(ngv = atoi(buf)) < 0 || ngv > 255) { |
| 247 |
< |
err = "bad # vertices for"; |
| 248 |
< |
goto fonterr; |
| 249 |
< |
} |
| 250 |
< |
g = (GLYPH *)malloc((2*ngv+1)*sizeof(GLYPH)); |
| 251 |
< |
if (g == NULL) |
| 252 |
< |
goto memerr; |
| 253 |
< |
f->fg[gn] = g; |
| 254 |
< |
*g++ = ngv; |
| 255 |
< |
ngv *= 2; |
| 256 |
< |
while (ngv--) { |
| 257 |
< |
if (fgetword(buf,sizeof(buf),fp) == NULL || |
| 258 |
< |
!isint(buf) || |
| 259 |
< |
(gv = atoi(buf)) < 0 || gv > 255) { |
| 260 |
< |
err = "bad vertex for"; |
| 261 |
< |
goto fonterr; |
| 262 |
< |
} |
| 263 |
< |
*g++ = gv; |
| 264 |
< |
} |
| 265 |
< |
} |
| 266 |
< |
fclose(fp); |
| 267 |
< |
f->next = fontlist; |
| 268 |
< |
return(fontlist = f); |
| 269 |
< |
nonint: |
| 270 |
< |
sprintf(errmsg, "non-integer in font file \"%s\"", pathname); |
| 271 |
< |
error(USER, errmsg); |
| 272 |
< |
fonterr: |
| 273 |
< |
sprintf(errmsg, "%s character (%d) in font file \"%s\"", |
| 274 |
< |
err, gn, pathname); |
| 275 |
< |
error(USER, errmsg); |
| 276 |
< |
memerr: |
| 277 |
< |
error(SYSTEM, "out of memory in fontglyph"); |
| 227 |
> |
tp = (TEXT *)m->os; |
| 228 |
> |
if (tp == NULL) |
| 229 |
> |
return; |
| 230 |
> |
for (tlp = tp->tl.next; tlp != NULL; tlp = tlp->next); |
| 231 |
> |
free((char *)tlp); |
| 232 |
> |
free((char *)tp); |
| 233 |
> |
m->os = NULL; |
| 234 |
|
} |
| 235 |
|
|
| 236 |
|
|
| 237 |
+ |
intext(p, m) /* check to see if p is in text glyph */ |
| 238 |
+ |
FVECT p; |
| 239 |
+ |
OBJREC *m; |
| 240 |
+ |
{ |
| 241 |
+ |
register TEXT *tp; |
| 242 |
+ |
register TLINE *tlp; |
| 243 |
+ |
FVECT v; |
| 244 |
+ |
double y, x; |
| 245 |
+ |
int col; |
| 246 |
+ |
register int lno; |
| 247 |
+ |
/* first, compute position in text */ |
| 248 |
+ |
tp = gettext(m); |
| 249 |
+ |
v[0] = p[0] - m->oargs.farg[0]; |
| 250 |
+ |
v[1] = p[1] - m->oargs.farg[1]; |
| 251 |
+ |
v[2] = p[2] - m->oargs.farg[2]; |
| 252 |
+ |
col = x = DOT(v, tp->right); |
| 253 |
+ |
lno = y = DOT(v, tp->down); |
| 254 |
+ |
if (x < 0.0 || y < 0.0) |
| 255 |
+ |
return(0); |
| 256 |
+ |
x -= (double)col; |
| 257 |
+ |
y = (lno+1) - y; |
| 258 |
+ |
/* get the font character */ |
| 259 |
+ |
for (tlp = tp->tl.next; tlp != NULL; tlp = tlp->next) |
| 260 |
+ |
if (--lno < 0) |
| 261 |
+ |
break; |
| 262 |
+ |
if (tlp == NULL || col >= strlen(TLSTR(tlp))) |
| 263 |
+ |
return(0); |
| 264 |
+ |
return(inglyph(x, y, tp->f->fg[TLSTR(tlp)[col]&0xff])); |
| 265 |
+ |
} |
| 266 |
+ |
|
| 267 |
+ |
|
| 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 |
|
|
| 276 |
< |
if (x < 0.0 || y < 0.0) |
| 276 |
> |
if (gl == NULL) |
| 277 |
|
return(0); |
| 278 |
|
x *= 256.0; /* get glyph coordinates */ |
| 279 |
|
y *= 256.0; |
| 280 |
|
xlb = x + 0.5; |
| 281 |
|
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--) { |
