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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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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; |
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|
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#define TLSTR(l) ((char *)((l)+1)) |
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|
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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 *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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FONT *getfont(); |
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|
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static FONT *fontlist = NULL; /* our font list */ |
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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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|
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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 */ |
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if ((g = getglyph(m, lno, col)) == NULL) |
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foreground = 0; |
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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; |
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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]); |
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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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} |
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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 * |
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tlalloc(s) /* allocate and assign text line */ |
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char *s; |
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{ |
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extern char *strcpy(); |
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register TLINE *tl; |
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|
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tl = (TLINE *)malloc(sizeof(TLINE)+1+strlen(s)); |
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if (tl == NULL) |
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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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|
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|
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TEXT * |
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gettext(tm) /* get text structure for material */ |
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register OBJREC *tm; |
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int lno; |
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int col; |
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{ |
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#define R (tm->oargs.farg+3) |
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#define D (tm->oargs.farg+6) |
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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]; |
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TEXT *t; |
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register int i; |
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register char **txt; |
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register TLINE *tlp; |
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register char *s; |
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|
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if (lno < 0 || col < 0) |
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return(NULL); |
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if (tm->os == NULL) { |
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txt = (char **)malloc(2*sizeof(char **)); |
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if (txt == NULL) |
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goto memerr; |
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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++) { |
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strcpy(s, tm->oargs.sarg[i]); |
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s += strlen(s); |
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*s++ = ' '; |
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} |
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*--s = '\0'; |
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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) { |
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sprintf(errmsg, "cannot find text file \"%s\"", |
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tm->oargs.sarg[tndx(tm)]); |
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error(USER, errmsg); |
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} |
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if ((fp = fopen(s, "r")) == NULL) { |
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sprintf(errmsg, "cannot open text file \"%s\"", |
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s); |
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error(SYSTEM, errmsg); |
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} |
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for (i=0; fgets(linbuf,sizeof(linbuf),fp)!=NULL; i++) { |
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s = linbuf + strlen(linbuf) - 1; |
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if (*s == '\n') |
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*s = '\0'; |
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txt=(char **)realloc(txt,(i+2)*sizeof(char **)); |
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if (txt == NULL) |
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goto memerr; |
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txt[i] = savqstr(linbuf); |
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} |
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txt[i] = NULL; |
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fclose(fp); |
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if ((t = (TEXT *)tm->os) != NULL) |
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return(t); |
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/* check arguments */ |
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if (tm->oargs.nsargs - tndx(tm) < 1 || |
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tm->oargs.nfargs != (tm->otype == PAT_BTEXT ? 11 : |
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tm->otype == PAT_CTEXT ? 15 : 9)) |
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objerror(tm, USER, "bad # arguments"); |
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if ((t = (TEXT *)malloc(sizeof(TEXT))) == NULL) |
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error(SYSTEM, "out of memory in gettext"); |
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/* compute vectors */ |
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fcross(DxR, D, R); |
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fcross(t->right, DxR, D); |
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d = DOT(D,D)/DOT(t->right,t->right); |
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for (i = 0; i < 3; i++) |
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t->right[i] *= d; |
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fcross(t->down, R, DxR); |
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d = DOT(R,R)/DOT(t->down,t->down); |
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for (i = 0; i < 3; i++) |
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t->down[i] *= d; |
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/* get text */ |
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tlp = &t->tl; |
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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++) { |
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strcpy(s, tm->oargs.sarg[i]); |
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s += strlen(s); |
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*s++ = ' '; |
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} |
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tm->os = (char *)txt; |
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*--s = '\0'; |
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tlp->next = tlalloc(linbuf); |
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tlp = tlp->next; |
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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) { |
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sprintf(errmsg, "cannot find text file \"%s\"", |
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tm->oargs.sarg[tndx(tm)]); |
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error(USER, errmsg); |
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} |
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if ((fp = fopen(s, "r")) == NULL) { |
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sprintf(errmsg, "cannot open text file \"%s\"", |
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s); |
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error(SYSTEM, errmsg); |
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} |
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while (fgets(linbuf, sizeof(linbuf), fp) != NULL) { |
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s = linbuf + strlen(linbuf) - 1; |
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if (*s == '\n') |
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*s = '\0'; |
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tlp->next = tlalloc(linbuf); |
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tlp = tlp->next; |
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} |
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fclose(fp); |
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} |
220 |
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txt = (char **)tm->os; |
221 |
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for (i = 0; i < lno; i++) |
222 |
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if (txt[i] == NULL) |
220 |
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tlp->next = NULL; |
221 |
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/* get the font */ |
222 |
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t->f = getfont(tm->oargs.sarg[fndx(tm)]); |
223 |
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/* we're done */ |
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tm->os = (char *)t; |
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return(t); |
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#undef R |
227 |
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#undef D |
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} |
229 |
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|
230 |
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|
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freetext(m) /* free text structures associated with m */ |
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OBJREC *m; |
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{ |
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register TEXT *tp; |
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register TLINE *tlp; |
236 |
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|
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tp = (TEXT *)m->os; |
238 |
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if (tp == NULL) |
239 |
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return; |
240 |
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for (tlp = tp->tl.next; tlp != NULL; tlp = tlp->next); |
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free((char *)tlp); |
242 |
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free((char *)tp); |
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m->os = NULL; |
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} |
245 |
> |
|
246 |
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|
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intext(p, m) /* check to see if p is in text glyph */ |
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FVECT p; |
249 |
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OBJREC *m; |
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{ |
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register TEXT *tp; |
252 |
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register TLINE *tlp; |
253 |
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FVECT v; |
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double y, x; |
255 |
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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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tp = gettext(m); |
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v[0] = p[0] - m->oargs.farg[0]; |
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v[1] = p[1] - m->oargs.farg[1]; |
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v[2] = p[2] - m->oargs.farg[2]; |
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col = x = DOT(v, tp->right); |
263 |
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lno = y = DOT(v, tp->down); |
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if (x < 0.0 || y < 0.0) |
265 |
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return(0); |
266 |
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x -= (double)col; |
267 |
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y = (lno+1) - y; |
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/* get the font character */ |
269 |
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for (tlp = tp->tl.next; tlp != NULL; tlp = tlp->next) |
270 |
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if (--lno < 0) |
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break; |
272 |
< |
if ((s = txt[i]) == NULL || col >= strlen(s)) |
273 |
< |
return(NULL); |
274 |
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else |
199 |
< |
return(getfont(tm->oargs.sarg[fndx(tm)])->fg[s[col]]); |
200 |
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memerr: |
201 |
< |
error(SYSTEM, "out of memory in getglyph"); |
272 |
> |
if (tlp == NULL || col >= strlen(TLSTR(tlp))) |
273 |
> |
return(0); |
274 |
> |
return(inglyph(x, y, tp->f->fg[TLSTR(tlp)[col]])); |
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} |
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|
277 |
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|
359 |
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int xlb, ylb; |
360 |
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register GLYPH *p0, *p1; |
361 |
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362 |
< |
if (x < 0.0 || y < 0.0) |
362 |
> |
if (gl == NULL) |
363 |
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return(0); |
364 |
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x *= 256.0; /* get glyph coordinates */ |
365 |
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y *= 256.0; |