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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 */ |
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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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|
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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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|
60 |
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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 GLYPH *getglyph(); |
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extern char *fgetword(); |
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|
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extern FONT *getfont(); |
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TEXT *gettext(); |
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|
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static FONT *fontlist = NULL; /* our font list */ |
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TLINE *tlalloc(); |
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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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|
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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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|
90 |
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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]; |
98 |
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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; |
103 |
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/* get the font character, check it */ |
104 |
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if ((g = getglyph(m, lno, col)) == NULL) |
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foreground = 0; |
106 |
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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 */ |
92 |
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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); |
101 |
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objerror(m, USER, errmsg); |
102 |
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} |
103 |
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raymixture(r, omod, OVOID, 1.0); |
103 |
> |
raytexture(r, omod); |
104 |
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} else if (m->otype == PAT_BTEXT) { |
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if (foreground) |
106 |
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scalecolor(r->pcol, ap[9]); |
106 |
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scalecolor(r->pcol, m->oargs.farg[9]); |
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else |
108 |
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scalecolor(r->pcol, ap[10]); |
108 |
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scalecolor(r->pcol, m->oargs.farg[10]); |
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} else { /* PAT_CTEXT */ |
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COLOR cval; |
111 |
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if (foreground) |
112 |
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setcolor(cval, ap[9], ap[10], ap[11]); |
112 |
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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]); |
116 |
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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); |
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} |
121 |
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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 */ |
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TLINE * |
125 |
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tlalloc(s) /* allocate and assign text line */ |
126 |
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char *s; |
127 |
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{ |
128 |
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extern char *strcpy(); |
129 |
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register TLINE *tl; |
130 |
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|
131 |
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tl = (TLINE *)malloc(sizeof(TLINE)+1+strlen(s)); |
132 |
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if (tl == NULL) |
133 |
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error(SYSTEM, "out of memory in tlalloc"); |
134 |
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tl->next = NULL; |
135 |
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strcpy(TLSTR(tl), s); |
136 |
> |
return(tl); |
137 |
> |
} |
138 |
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|
139 |
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|
140 |
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TEXT * |
141 |
> |
gettext(tm) /* get text structure for material */ |
142 |
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register OBJREC *tm; |
138 |
– |
int lno; |
139 |
– |
int col; |
143 |
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{ |
144 |
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#define R (tm->oargs.farg+3) |
145 |
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#define D (tm->oargs.farg+6) |
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extern char *strcpy(), *fgets(); |
147 |
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FVECT DxR; |
148 |
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double d; |
149 |
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FILE *fp; |
150 |
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char linbuf[512]; |
151 |
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TEXT *t; |
152 |
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register int i; |
153 |
< |
register char **txt; |
153 |
> |
register TLINE *tlp; |
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register char *s; |
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|
156 |
< |
if (lno < 0 || col < 0) |
157 |
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return(NULL); |
158 |
< |
if (tm->os == NULL) { |
159 |
< |
txt = (char **)malloc(2*sizeof(char **)); |
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if (txt == NULL) |
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goto memerr; |
162 |
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if (tm->oargs.nsargs - tndx(tm) > 1) { /* single line */ |
163 |
< |
s = linbuf; |
164 |
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for (i = tndx(tm)+1; i < tm->oargs.nsargs; i++) { |
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strcpy(s, tm->oargs.sarg[i]); |
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s += strlen(s); |
167 |
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*s++ = ' '; |
168 |
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} |
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*--s = '\0'; |
170 |
< |
txt[0] = savqstr(linbuf); |
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txt[1] = NULL; |
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} else { /* text file */ |
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if ((s = getpath(tm->oargs.sarg[tndx(tm)], |
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libpath, R_OK)) == NULL) { |
175 |
< |
sprintf(errmsg, "cannot find text file \"%s\"", |
176 |
< |
tm->oargs.sarg[tndx(tm)]); |
177 |
< |
error(USER, errmsg); |
178 |
< |
} |
179 |
< |
if ((fp = fopen(s, "r")) == NULL) { |
180 |
< |
sprintf(errmsg, "cannot open text file \"%s\"", |
181 |
< |
s); |
182 |
< |
error(SYSTEM, errmsg); |
175 |
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} |
176 |
< |
for (i=0; fgets(linbuf,sizeof(linbuf),fp)!=NULL; i++) { |
177 |
< |
s = linbuf + strlen(linbuf) - 1; |
178 |
< |
if (*s == '\n') |
179 |
< |
*s = '\0'; |
180 |
< |
txt=(char **)realloc(txt,(i+2)*sizeof(char **)); |
181 |
< |
if (txt == NULL) |
182 |
< |
goto memerr; |
183 |
< |
txt[i] = savqstr(linbuf); |
184 |
< |
} |
185 |
< |
txt[i] = NULL; |
186 |
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fclose(fp); |
156 |
> |
if ((t = (TEXT *)tm->os) != NULL) |
157 |
> |
return(t); |
158 |
> |
/* check arguments */ |
159 |
> |
if (tm->oargs.nsargs - tndx(tm) < 1 || |
160 |
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tm->oargs.nfargs != (tm->otype == PAT_BTEXT ? 11 : |
161 |
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tm->otype == PAT_CTEXT ? 15 : 9)) |
162 |
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objerror(tm, USER, "bad # arguments"); |
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if ((t = (TEXT *)malloc(sizeof(TEXT))) == NULL) |
164 |
> |
error(SYSTEM, "out of memory in gettext"); |
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> |
/* compute vectors */ |
166 |
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fcross(DxR, D, R); |
167 |
> |
fcross(t->right, DxR, D); |
168 |
> |
d = DOT(D,D)/DOT(t->right,t->right); |
169 |
> |
for (i = 0; i < 3; i++) |
170 |
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t->right[i] *= d; |
171 |
> |
fcross(t->down, R, DxR); |
172 |
> |
d = DOT(R,R)/DOT(t->down,t->down); |
173 |
> |
for (i = 0; i < 3; i++) |
174 |
> |
t->down[i] *= d; |
175 |
> |
/* get text */ |
176 |
> |
tlp = &t->tl; |
177 |
> |
if (tm->oargs.nsargs - tndx(tm) > 1) { /* single line */ |
178 |
> |
s = linbuf; |
179 |
> |
for (i = tndx(tm)+1; i < tm->oargs.nsargs; i++) { |
180 |
> |
strcpy(s, tm->oargs.sarg[i]); |
181 |
> |
s += strlen(s); |
182 |
> |
*s++ = ' '; |
183 |
|
} |
184 |
< |
tm->os = (char *)txt; |
184 |
> |
*--s = '\0'; |
185 |
> |
tlp->next = tlalloc(linbuf); |
186 |
> |
tlp = tlp->next; |
187 |
> |
} else { /* text file */ |
188 |
> |
if ((s = getpath(tm->oargs.sarg[tndx(tm)], |
189 |
> |
libpath, R_OK)) == NULL) { |
190 |
> |
sprintf(errmsg, "cannot find text file \"%s\"", |
191 |
> |
tm->oargs.sarg[tndx(tm)]); |
192 |
> |
error(USER, errmsg); |
193 |
> |
} |
194 |
> |
if ((fp = fopen(s, "r")) == NULL) { |
195 |
> |
sprintf(errmsg, "cannot open text file \"%s\"", |
196 |
> |
s); |
197 |
> |
error(SYSTEM, errmsg); |
198 |
> |
} |
199 |
> |
while (fgets(linbuf, sizeof(linbuf), fp) != NULL) { |
200 |
> |
s = linbuf + strlen(linbuf) - 1; |
201 |
> |
if (*s == '\n') |
202 |
> |
*s = '\0'; |
203 |
> |
tlp->next = tlalloc(linbuf); |
204 |
> |
tlp = tlp->next; |
205 |
> |
} |
206 |
> |
fclose(fp); |
207 |
|
} |
208 |
< |
txt = (char **)tm->os; |
209 |
< |
for (i = 0; i < lno; i++) |
210 |
< |
if (txt[i] == NULL) |
211 |
< |
break; |
212 |
< |
if ((s = txt[i]) == NULL || col >= strlen(s)) |
213 |
< |
return(NULL); |
214 |
< |
else |
215 |
< |
return(getfont(tm->oargs.sarg[fndx(tm)])->fg[s[col]]); |
198 |
< |
memerr: |
199 |
< |
error(SYSTEM, "out of memory in getglyph"); |
208 |
> |
tlp->next = NULL; |
209 |
> |
/* get the font */ |
210 |
> |
t->f = getfont(tm->oargs.sarg[fndx(tm)]); |
211 |
> |
/* we're done */ |
212 |
> |
tm->os = (char *)t; |
213 |
> |
return(t); |
214 |
> |
#undef R |
215 |
> |
#undef D |
216 |
|
} |
217 |
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|
218 |
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|
219 |
< |
FONT * |
220 |
< |
getfont(fname) /* return font fname */ |
205 |
< |
char *fname; |
219 |
> |
freetext(m) /* free text structures associated with m */ |
220 |
> |
OBJREC *m; |
221 |
|
{ |
222 |
< |
FILE *fp; |
223 |
< |
char *pathname, *err; |
209 |
< |
int gn, ngv, gv; |
210 |
< |
register GLYPH *g; |
211 |
< |
register FONT *f; |
222 |
> |
register TEXT *tp; |
223 |
> |
register TLINE *tlp; |
224 |
|
|
225 |
< |
for (f = fontlist; f != NULL; f = f->next) |
226 |
< |
if (!strcmp(f->name, fname)) |
227 |
< |
return(f); |
228 |
< |
/* load the font file */ |
229 |
< |
if ((pathname = getpath(fname, libpath, R_OK)) == NULL) { |
230 |
< |
sprintf(errmsg, "cannot find font file \"%s\"", fname); |
231 |
< |
error(USER, errmsg); |
220 |
< |
} |
221 |
< |
f = (FONT *)calloc(1, sizeof(FONT)); |
222 |
< |
if (f == NULL) |
223 |
< |
goto memerr; |
224 |
< |
f->name = savestr(fname); |
225 |
< |
if ((fp = fopen(pathname, "r")) == NULL) { |
226 |
< |
sprintf(errmsg, "cannot open font file \"%s\"", |
227 |
< |
pathname); |
228 |
< |
error(SYSTEM, errmsg); |
229 |
< |
} |
230 |
< |
while (fscanf(fp, "%d", &gn) == 1) { /* get each glyph */ |
231 |
< |
if (gn < 0 || gn > 255) { |
232 |
< |
err = "illegal"; |
233 |
< |
goto fonterr; |
234 |
< |
} |
235 |
< |
if (f->fg[gn] != NULL) { |
236 |
< |
err = "duplicate"; |
237 |
< |
goto fonterr; |
238 |
< |
} |
239 |
< |
if (fscanf(fp, "%d", &ngv) != 1 || |
240 |
< |
ngv < 0 || ngv > 255) { |
241 |
< |
err = "bad # vertices for"; |
242 |
< |
goto fonterr; |
243 |
< |
} |
244 |
< |
g = (GLYPH *)malloc((2*ngv+1)*sizeof(GLYPH)); |
245 |
< |
if (g == NULL) |
246 |
< |
goto memerr; |
247 |
< |
f->fg[gn] = g; |
248 |
< |
*g++ = ngv; |
249 |
< |
ngv *= 2; |
250 |
< |
while (ngv--) { |
251 |
< |
if (fscanf(fp, "%d", &gv) != 1 || |
252 |
< |
gv < 0 || gv > 255) { |
253 |
< |
err = "bad vertex for"; |
254 |
< |
goto fonterr; |
255 |
< |
} |
256 |
< |
*g++ = gv; |
257 |
< |
} |
258 |
< |
} |
259 |
< |
fclose(fp); |
260 |
< |
f->next = fontlist; |
261 |
< |
return(fontlist = f); |
262 |
< |
fonterr: |
263 |
< |
sprintf(errmsg, "%s character (%d) in font file \"%s\"", |
264 |
< |
err, gn, pathname); |
265 |
< |
error(USER, errmsg); |
266 |
< |
memerr: |
267 |
< |
error(SYSTEM, "out of memory in fontglyph"); |
225 |
> |
tp = (TEXT *)m->os; |
226 |
> |
if (tp == NULL) |
227 |
> |
return; |
228 |
> |
for (tlp = tp->tl.next; tlp != NULL; tlp = tlp->next); |
229 |
> |
free((char *)tlp); |
230 |
> |
free((char *)tp); |
231 |
> |
m->os = NULL; |
232 |
|
} |
233 |
|
|
234 |
|
|
235 |
+ |
intext(p, m) /* check to see if p is in text glyph */ |
236 |
+ |
FVECT p; |
237 |
+ |
OBJREC *m; |
238 |
+ |
{ |
239 |
+ |
register TEXT *tp; |
240 |
+ |
register TLINE *tlp; |
241 |
+ |
FVECT v; |
242 |
+ |
double y, x; |
243 |
+ |
int col; |
244 |
+ |
register int lno; |
245 |
+ |
/* first, compute position in text */ |
246 |
+ |
tp = gettext(m); |
247 |
+ |
v[0] = p[0] - m->oargs.farg[0]; |
248 |
+ |
v[1] = p[1] - m->oargs.farg[1]; |
249 |
+ |
v[2] = p[2] - m->oargs.farg[2]; |
250 |
+ |
col = x = DOT(v, tp->right); |
251 |
+ |
lno = y = DOT(v, tp->down); |
252 |
+ |
if (x < 0.0 || y < 0.0) |
253 |
+ |
return(0); |
254 |
+ |
x -= (double)col; |
255 |
+ |
y = (lno+1) - y; |
256 |
+ |
/* get the font character */ |
257 |
+ |
for (tlp = tp->tl.next; tlp != NULL; tlp = tlp->next) |
258 |
+ |
if (--lno < 0) |
259 |
+ |
break; |
260 |
+ |
if (tlp == NULL || col >= strlen(TLSTR(tlp))) |
261 |
+ |
return(0); |
262 |
+ |
return(inglyph(x, y, tp->f->fg[TLSTR(tlp)[col]&0xff])); |
263 |
+ |
} |
264 |
+ |
|
265 |
+ |
|
266 |
|
inglyph(x, y, gl) /* (x,y) within font glyph gl? */ |
267 |
|
double x, y; |
268 |
|
GLYPH *gl; |
269 |
|
{ |
270 |
|
int n, ncross; |
271 |
|
int xlb, ylb; |
272 |
< |
register GLYPH *p0, *p1; |
272 |
> |
register GORD *p0, *p1; |
273 |
|
|
274 |
< |
if (x < 0.0 || y < 0.0) |
274 |
> |
if (gl == NULL) |
275 |
|
return(0); |
276 |
< |
xlb = x *= 255.0; /* get glyph coordinates */ |
277 |
< |
ylb = y *= 255.0; |
278 |
< |
n = *gl++; /* get # of vertices */ |
279 |
< |
p0 = gl + 2*(n-1); /* connect last to first */ |
280 |
< |
p1 = gl; |
276 |
> |
x *= 256.0; /* get glyph coordinates */ |
277 |
> |
y *= 256.0; |
278 |
> |
xlb = x + 0.5; |
279 |
> |
ylb = y + 0.5; |
280 |
> |
n = gl->nverts; /* get # of vertices */ |
281 |
> |
p0 = gvlist(gl) + 2*(n-1); /* connect last to first */ |
282 |
> |
p1 = gvlist(gl); |
283 |
|
ncross = 0; |
284 |
|
/* positive x axis cross test */ |
285 |
|
while (n--) { |