| 1 |
– |
/* Copyright (c) 1990 Regents of the University of California */ |
| 2 |
– |
|
| 1 |
|
#ifndef lint |
| 2 |
< |
static char SCCSid[] = "$SunId$ LBL"; |
| 2 |
> |
static const char RCSid[] = "$Id$"; |
| 3 |
|
#endif |
| 6 |
– |
|
| 4 |
|
/* |
| 5 |
|
* text.c - functions for text patterns and mixtures. |
| 9 |
– |
* |
| 10 |
– |
* 11/12/86 |
| 6 |
|
*/ |
| 7 |
|
|
| 8 |
< |
#include "ray.h" |
| 8 |
> |
#include "copyright.h" |
| 9 |
|
|
| 10 |
+ |
#include "ray.h" |
| 11 |
+ |
#include "paths.h" |
| 12 |
|
#include "otypes.h" |
| 13 |
+ |
#include "rtotypes.h" |
| 14 |
+ |
#include "font.h" |
| 15 |
|
|
| 16 |
|
/* |
| 17 |
|
* A text pattern is specified as the text (a file or line), |
| 22 |
|
* modifier brighttext id |
| 23 |
|
* 2 fontfile textfile |
| 24 |
|
* 0 |
| 25 |
< |
* 11 |
| 25 |
> |
* 11+ |
| 26 |
|
* Ax Ay Az |
| 27 |
|
* Rx Ry Rz |
| 28 |
|
* Dx Dy Dz |
| 29 |
|
* foreground background |
| 30 |
+ |
* [spacing] |
| 31 |
|
* |
| 32 |
|
* For a single line, we use: |
| 33 |
|
* |
| 34 |
|
* modifier brighttext id |
| 35 |
|
* N+2 fontfile . This is a line with N words... |
| 36 |
|
* 0 |
| 37 |
< |
* 11 |
| 37 |
> |
* 11+ |
| 38 |
|
* Ax Ay Az |
| 39 |
|
* Rx Ry Rz |
| 40 |
|
* Dx Dy Dz |
| 41 |
|
* foreground background |
| 42 |
+ |
* [spacing] |
| 43 |
|
* |
| 44 |
|
* Colortext is identical, except colors are given rather than |
| 45 |
< |
* brightnesses. Mixtext has foreground and background modifiers: |
| 45 |
> |
* brightnesses. |
| 46 |
|
* |
| 47 |
+ |
* Mixtext has foreground and background modifiers: |
| 48 |
+ |
* |
| 49 |
|
* modifier mixtext id |
| 50 |
|
* 4+ foremod backmod fontfile text.. |
| 51 |
|
* 0 |
| 52 |
< |
* 9 |
| 52 |
> |
* 9+ |
| 53 |
|
* Ax Ay Az |
| 54 |
|
* Rx Ry Rz |
| 55 |
|
* Dx Dy Dz |
| 56 |
+ |
* [spacing] |
| 57 |
|
*/ |
| 58 |
|
|
| 59 |
|
#define fndx(m) ((m)->otype==MIX_TEXT ? 2 : 0) |
| 60 |
|
#define tndx(m) ((m)->otype==MIX_TEXT ? 3 : 1) |
| 61 |
+ |
#define sndx(m) ((m)->otype==PAT_BTEXT ? 11 : \ |
| 62 |
+ |
(m)->otype==PAT_CTEXT ? 15 : 9) |
| 63 |
|
|
| 64 |
< |
extern char *libpath; /* library search path */ |
| 64 |
> |
typedef struct tline { |
| 65 |
> |
struct tline *next; /* pointer to next line */ |
| 66 |
> |
short *spc; /* character spacing */ |
| 67 |
> |
int width; /* total line width */ |
| 68 |
> |
/* followed by the string */ |
| 69 |
> |
} TLINE; |
| 70 |
|
|
| 71 |
< |
typedef unsigned char GLYPH; |
| 71 |
> |
#define TLSTR(l) ((char *)((l)+1)) |
| 72 |
|
|
| 73 |
< |
typedef struct font { |
| 74 |
< |
GLYPH *fg[256]; /* font glyphs */ |
| 75 |
< |
char *name; /* font file name */ |
| 76 |
< |
struct font *next; /* next font in list */ |
| 77 |
< |
} FONT; |
| 73 |
> |
typedef struct { |
| 74 |
> |
FVECT right, down; /* right and down unit vectors */ |
| 75 |
> |
FONT *f; /* our font */ |
| 76 |
> |
TLINE tl; /* line list */ |
| 77 |
> |
} TEXT; |
| 78 |
|
|
| 79 |
< |
extern GLYPH *getglyph(); |
| 79 |
> |
static TLINE * tlalloc(char *s); |
| 80 |
> |
static TEXT * gettext(OBJREC *tm); |
| 81 |
> |
static int intext(FVECT p, OBJREC *m); |
| 82 |
> |
static int inglyph(double x, double y, GLYPH *gl); |
| 83 |
|
|
| 70 |
– |
extern FONT *getfont(); |
| 84 |
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|
| 85 |
< |
static FONT *fontlist = NULL; /* our font list */ |
| 86 |
< |
|
| 87 |
< |
|
| 88 |
< |
text(m, r) |
| 89 |
< |
register OBJREC *m; |
| 77 |
< |
RAY *r; |
| 85 |
> |
int |
| 86 |
> |
do_text( |
| 87 |
> |
OBJREC *m, |
| 88 |
> |
RAY *r |
| 89 |
> |
) |
| 90 |
|
{ |
| 91 |
< |
double v[3], y, x; |
| 80 |
< |
int col, lno; |
| 91 |
> |
FVECT v; |
| 92 |
|
int foreground; |
| 93 |
< |
GLYPH *g; |
| 83 |
< |
register double *ap; |
| 84 |
< |
|
| 85 |
< |
if (m->oargs.nsargs - tndx(m) < 1 || |
| 86 |
< |
m->oargs.nfargs != (m->otype == PAT_BTEXT ? 11 : |
| 87 |
< |
m->otype == PAT_CTEXT ? 15 : 9)) |
| 88 |
< |
objerror(m, USER, "bad # arguments"); |
| 89 |
< |
|
| 90 |
< |
/* first, discover position in text */ |
| 91 |
< |
ap = m->oargs.farg; |
| 93 |
> |
/* get transformed position */ |
| 94 |
|
if (r->rox != NULL) |
| 95 |
|
multp3(v, r->rop, r->rox->b.xfm); |
| 96 |
|
else |
| 97 |
|
VCOPY(v, r->rop); |
| 98 |
< |
v[0] -= ap[0]; |
| 99 |
< |
v[1] -= ap[1]; |
| 98 |
< |
v[2] -= ap[2]; |
| 99 |
< |
col = x = DOT(v, ap+3) / DOT(ap+3, ap+3); |
| 100 |
< |
lno = y = DOT(v, ap+6) / DOT(ap+6, ap+6); |
| 101 |
< |
x -= col; |
| 102 |
< |
y = (lno+1) - y; |
| 103 |
< |
/* get the font character, check it */ |
| 104 |
< |
if ((g = getglyph(m, lno, col)) == NULL) |
| 105 |
< |
foreground = 0; |
| 106 |
< |
else |
| 107 |
< |
foreground = inglyph(x, y, g); |
| 98 |
> |
/* check if we are within a text glyph */ |
| 99 |
> |
foreground = intext(v, m); |
| 100 |
|
/* modify */ |
| 101 |
|
if (m->otype == MIX_TEXT) { |
| 102 |
|
OBJECT omod; |
| 103 |
|
char *modname = m->oargs.sarg[foreground ? 0 : 1]; |
| 104 |
|
if (!strcmp(modname, VOIDID)) |
| 105 |
|
omod = OVOID; |
| 106 |
< |
else if ((omod = modifier(modname)) == OVOID) { |
| 106 |
> |
else if ((omod = lastmod(objndx(m), modname)) == OVOID) { |
| 107 |
|
sprintf(errmsg, "undefined modifier \"%s\"", modname); |
| 108 |
|
objerror(m, USER, errmsg); |
| 109 |
|
} |
| 110 |
< |
raymixture(r, omod, OVOID, 1.0); |
| 110 |
> |
if (rayshade(r, omod)) { |
| 111 |
> |
if (m->omod != OVOID) |
| 112 |
> |
objerror(m, USER, "inappropriate modifier"); |
| 113 |
> |
return(1); |
| 114 |
> |
} |
| 115 |
|
} else if (m->otype == PAT_BTEXT) { |
| 116 |
< |
if (foreground) |
| 117 |
< |
scalecolor(r->pcol, ap[9]); |
| 118 |
< |
else |
| 119 |
< |
scalecolor(r->pcol, ap[10]); |
| 116 |
> |
if (foreground) { |
| 117 |
> |
scalescolor(r->pcol, m->oargs.farg[9]); |
| 118 |
> |
} else { |
| 119 |
> |
scalescolor(r->pcol, m->oargs.farg[10]); |
| 120 |
> |
} |
| 121 |
|
} else { /* PAT_CTEXT */ |
| 122 |
< |
COLOR cval; |
| 122 |
> |
SCOLOR scval; |
| 123 |
|
if (foreground) |
| 124 |
< |
setcolor(cval, ap[9], ap[10], ap[11]); |
| 124 |
> |
setscolor(scval, m->oargs.farg[9], |
| 125 |
> |
m->oargs.farg[10], |
| 126 |
> |
m->oargs.farg[11]); |
| 127 |
|
else |
| 128 |
< |
setcolor(cval, ap[12], ap[13], ap[14]); |
| 129 |
< |
multcolor(r->pcol, cval); |
| 128 |
> |
setscolor(scval, m->oargs.farg[12], |
| 129 |
> |
m->oargs.farg[13], |
| 130 |
> |
m->oargs.farg[14]); |
| 131 |
> |
smultscolor(r->pcol, scval); |
| 132 |
|
} |
| 133 |
+ |
return(0); |
| 134 |
|
} |
| 135 |
|
|
| 136 |
|
|
| 137 |
< |
GLYPH * |
| 138 |
< |
getglyph(tm, lno, col) /* get a glyph from a text description */ |
| 139 |
< |
register OBJREC *tm; |
| 140 |
< |
int lno; |
| 139 |
< |
int col; |
| 137 |
> |
static TLINE * |
| 138 |
> |
tlalloc( /* allocate and assign text line */ |
| 139 |
> |
char *s |
| 140 |
> |
) |
| 141 |
|
{ |
| 142 |
< |
extern char *strcpy(), *fgets(); |
| 143 |
< |
FILE *fp; |
| 143 |
< |
char linbuf[512]; |
| 144 |
< |
register int i; |
| 145 |
< |
register char **txt; |
| 146 |
< |
register char *s; |
| 142 |
> |
int siz; |
| 143 |
> |
TLINE *tl; |
| 144 |
|
|
| 145 |
< |
if (lno < 0 || col < 0) |
| 146 |
< |
return(NULL); |
| 147 |
< |
if (tm->os == NULL) { |
| 148 |
< |
txt = (char **)malloc(2*sizeof(char **)); |
| 149 |
< |
if (txt == NULL) |
| 150 |
< |
goto memerr; |
| 151 |
< |
if (tm->oargs.nsargs - tndx(tm) > 1) { /* single line */ |
| 155 |
< |
s = linbuf; |
| 156 |
< |
for (i = tndx(tm)+1; i < tm->oargs.nsargs; i++) { |
| 157 |
< |
strcpy(s, tm->oargs.sarg[i]); |
| 158 |
< |
s += strlen(s); |
| 159 |
< |
*s++ = ' '; |
| 160 |
< |
} |
| 161 |
< |
*--s = '\0'; |
| 162 |
< |
txt[0] = savqstr(linbuf); |
| 163 |
< |
txt[1] = NULL; |
| 164 |
< |
} else { /* text file */ |
| 165 |
< |
if ((s = getpath(tm->oargs.sarg[tndx(tm)], |
| 166 |
< |
libpath, R_OK)) == NULL) { |
| 167 |
< |
sprintf(errmsg, "cannot find text file \"%s\"", |
| 168 |
< |
tm->oargs.sarg[tndx(tm)]); |
| 169 |
< |
error(USER, errmsg); |
| 170 |
< |
} |
| 171 |
< |
if ((fp = fopen(s, "r")) == NULL) { |
| 172 |
< |
sprintf(errmsg, "cannot open text file \"%s\"", |
| 173 |
< |
s); |
| 174 |
< |
error(SYSTEM, errmsg); |
| 175 |
< |
} |
| 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 |
< |
fclose(fp); |
| 187 |
< |
} |
| 188 |
< |
tm->os = (char *)txt; |
| 189 |
< |
} |
| 190 |
< |
txt = (char **)tm->os; |
| 191 |
< |
for (i = 0; i < lno; i++) |
| 192 |
< |
if (txt[i] == NULL) |
| 193 |
< |
break; |
| 194 |
< |
if ((s = txt[i]) == NULL || col >= strlen(s)) |
| 195 |
< |
return(NULL); |
| 196 |
< |
else |
| 197 |
< |
return(getfont(tm->oargs.sarg[fndx(tm)])->fg[s[col]]); |
| 198 |
< |
memerr: |
| 199 |
< |
error(SYSTEM, "out of memory in getglyph"); |
| 145 |
> |
siz = strlen(s) + 1; |
| 146 |
> |
if ((tl=(TLINE *)malloc(sizeof(TLINE)+siz)) == NULL || |
| 147 |
> |
(tl->spc=(short *)malloc(siz*sizeof(short))) == NULL) |
| 148 |
> |
error(SYSTEM, "out of memory in tlalloc"); |
| 149 |
> |
tl->next = NULL; |
| 150 |
> |
strcpy(TLSTR(tl), s); |
| 151 |
> |
return(tl); |
| 152 |
|
} |
| 153 |
|
|
| 154 |
|
|
| 155 |
< |
FONT * |
| 156 |
< |
getfont(fname) /* return font fname */ |
| 157 |
< |
char *fname; |
| 155 |
> |
static TEXT * |
| 156 |
> |
gettext( /* get text structure for material */ |
| 157 |
> |
OBJREC *tm |
| 158 |
> |
) |
| 159 |
|
{ |
| 160 |
+ |
#define R (tm->oargs.farg+3) |
| 161 |
+ |
#define D (tm->oargs.farg+6) |
| 162 |
+ |
FVECT DxR; |
| 163 |
+ |
double d; |
| 164 |
|
FILE *fp; |
| 165 |
< |
char *pathname, *err; |
| 166 |
< |
int gn, ngv, gv; |
| 167 |
< |
register GLYPH *g; |
| 168 |
< |
register FONT *f; |
| 165 |
> |
char linbuf[512]; |
| 166 |
> |
TEXT *t; |
| 167 |
> |
int i; |
| 168 |
> |
TLINE *tlp; |
| 169 |
> |
char *s; |
| 170 |
|
|
| 171 |
< |
for (f = fontlist; f != NULL; f = f->next) |
| 172 |
< |
if (!strcmp(f->name, fname)) |
| 173 |
< |
return(f); |
| 174 |
< |
/* load the font file */ |
| 175 |
< |
if ((pathname = getpath(fname, libpath, R_OK)) == NULL) { |
| 176 |
< |
sprintf(errmsg, "cannot find font file \"%s\"", fname); |
| 177 |
< |
error(USER, errmsg); |
| 178 |
< |
} |
| 179 |
< |
f = (FONT *)calloc(1, sizeof(FONT)); |
| 180 |
< |
if (f == NULL) |
| 181 |
< |
goto memerr; |
| 182 |
< |
f->name = savestr(fname); |
| 183 |
< |
if ((fp = fopen(pathname, "r")) == NULL) { |
| 184 |
< |
sprintf(errmsg, "cannot open font file \"%s\"", |
| 185 |
< |
pathname); |
| 186 |
< |
error(SYSTEM, errmsg); |
| 187 |
< |
} |
| 188 |
< |
while (fscanf(fp, "%d", &gn) == 1) { /* get each glyph */ |
| 189 |
< |
if (gn < 0 || gn > 255) { |
| 190 |
< |
err = "illegal"; |
| 191 |
< |
goto fonterr; |
| 171 |
> |
if ((t = (TEXT *)tm->os) != NULL) |
| 172 |
> |
return(t); |
| 173 |
> |
/* check arguments */ |
| 174 |
> |
if (tm->oargs.nsargs - tndx(tm) < 1 || tm->oargs.nfargs < sndx(tm)) |
| 175 |
> |
objerror(tm, USER, "bad # arguments"); |
| 176 |
> |
if ((t = (TEXT *)malloc(sizeof(TEXT))) == NULL) |
| 177 |
> |
error(SYSTEM, "out of memory in gettext"); |
| 178 |
> |
/* compute vectors */ |
| 179 |
> |
fcross(DxR, D, R); |
| 180 |
> |
fcross(t->right, DxR, D); |
| 181 |
> |
d = DOT(t->right,t->right); |
| 182 |
> |
if (d <= FTINY*FTINY*FTINY*FTINY) |
| 183 |
> |
objerror(tm, USER, "illegal motion vector"); |
| 184 |
> |
d = DOT(D,D)/d; |
| 185 |
> |
for (i = 0; i < 3; i++) |
| 186 |
> |
t->right[i] *= d; |
| 187 |
> |
fcross(t->down, R, DxR); |
| 188 |
> |
d = DOT(R,R)/DOT(t->down,t->down); |
| 189 |
> |
for (i = 0; i < 3; i++) |
| 190 |
> |
t->down[i] *= d; |
| 191 |
> |
/* get text */ |
| 192 |
> |
tlp = &t->tl; |
| 193 |
> |
if (tm->oargs.nsargs - tndx(tm) > 1) { /* single line */ |
| 194 |
> |
s = linbuf; |
| 195 |
> |
for (i = tndx(tm)+1; i < tm->oargs.nsargs; i++) { |
| 196 |
> |
strcpy(s, tm->oargs.sarg[i]); |
| 197 |
> |
s += strlen(s); |
| 198 |
> |
*s++ = ' '; |
| 199 |
|
} |
| 200 |
< |
if (f->fg[gn] != NULL) { |
| 201 |
< |
err = "duplicate"; |
| 202 |
< |
goto fonterr; |
| 200 |
> |
*--s = '\0'; |
| 201 |
> |
tlp->next = tlalloc(linbuf); |
| 202 |
> |
tlp = tlp->next; |
| 203 |
> |
} else { /* text file */ |
| 204 |
> |
if ((s = getpath(tm->oargs.sarg[tndx(tm)], |
| 205 |
> |
getrlibpath(), R_OK)) == NULL) { |
| 206 |
> |
sprintf(errmsg, "cannot find text file \"%s\"", |
| 207 |
> |
tm->oargs.sarg[tndx(tm)]); |
| 208 |
> |
error(SYSTEM, errmsg); |
| 209 |
|
} |
| 210 |
< |
if (fscanf(fp, "%d", &ngv) != 1 || |
| 211 |
< |
ngv < 0 || ngv > 255) { |
| 212 |
< |
err = "bad # vertices for"; |
| 242 |
< |
goto fonterr; |
| 210 |
> |
if ((fp = fopen(s, "r")) == NULL) { |
| 211 |
> |
sprintf(errmsg, "cannot open text file \"%s\"", s); |
| 212 |
> |
error(SYSTEM, errmsg); |
| 213 |
|
} |
| 214 |
< |
g = (GLYPH *)malloc((2*ngv+1)*sizeof(GLYPH)); |
| 215 |
< |
if (g == NULL) |
| 216 |
< |
goto memerr; |
| 217 |
< |
f->fg[gn] = g; |
| 218 |
< |
*g++ = ngv; |
| 219 |
< |
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; |
| 214 |
> |
while (fgets(linbuf, sizeof(linbuf), fp) != NULL) { |
| 215 |
> |
s = linbuf + strlen(linbuf) - 1; |
| 216 |
> |
if (*s == '\n') |
| 217 |
> |
*s = '\0'; |
| 218 |
> |
tlp->next = tlalloc(linbuf); |
| 219 |
> |
tlp = tlp->next; |
| 220 |
|
} |
| 221 |
+ |
fclose(fp); |
| 222 |
|
} |
| 223 |
< |
fclose(fp); |
| 224 |
< |
f->next = fontlist; |
| 225 |
< |
return(fontlist = f); |
| 226 |
< |
fonterr: |
| 227 |
< |
sprintf(errmsg, "%s character (%d) in font file \"%s\"", |
| 228 |
< |
err, gn, pathname); |
| 229 |
< |
error(USER, errmsg); |
| 230 |
< |
memerr: |
| 231 |
< |
error(SYSTEM, "out of memory in fontglyph"); |
| 223 |
> |
tlp->next = NULL; |
| 224 |
> |
/* get the font */ |
| 225 |
> |
t->f = getfont(tm->oargs.sarg[fndx(tm)]); |
| 226 |
> |
if (!t->f) |
| 227 |
> |
objerror(tm, USER, "font load error"); |
| 228 |
> |
/* compute character spacing */ |
| 229 |
> |
i = sndx(tm); |
| 230 |
> |
d = i < tm->oargs.nfargs ? tm->oargs.farg[i] : 0.0; |
| 231 |
> |
i = d * 255.0; |
| 232 |
> |
t->tl.width = 0; |
| 233 |
> |
for (tlp = t->tl.next; tlp != NULL; tlp = tlp->next) { |
| 234 |
> |
if (i < 0) |
| 235 |
> |
tlp->width = squeeztext(tlp->spc, TLSTR(tlp), t->f, -i); |
| 236 |
> |
else if (i > 0) |
| 237 |
> |
tlp->width = proptext(tlp->spc, TLSTR(tlp), t->f, i, 3); |
| 238 |
> |
else |
| 239 |
> |
tlp->width = uniftext(tlp->spc, TLSTR(tlp), t->f); |
| 240 |
> |
if (tlp->width > t->tl.width) |
| 241 |
> |
t->tl.width = tlp->width; |
| 242 |
> |
} |
| 243 |
> |
/* we're done */ |
| 244 |
> |
tm->os = (char *)t; |
| 245 |
> |
return(t); |
| 246 |
> |
#undef R |
| 247 |
> |
#undef D |
| 248 |
|
} |
| 249 |
|
|
| 250 |
|
|
| 251 |
< |
inglyph(x, y, gl) /* (x,y) within font glyph gl? */ |
| 252 |
< |
double x, y; |
| 253 |
< |
GLYPH *gl; |
| 251 |
> |
void |
| 252 |
> |
freetext( /* free text structures associated with m */ |
| 253 |
> |
OBJREC *m |
| 254 |
> |
) |
| 255 |
|
{ |
| 256 |
+ |
TEXT *tp; |
| 257 |
+ |
TLINE *tlp; |
| 258 |
+ |
|
| 259 |
+ |
tp = (TEXT *)m->os; |
| 260 |
+ |
if (tp == NULL) |
| 261 |
+ |
return; |
| 262 |
+ |
while ((tlp = tp->tl.next) != NULL) { |
| 263 |
+ |
tp->tl.next = tlp->next; |
| 264 |
+ |
free((void *)tlp->spc); |
| 265 |
+ |
free((void *)tlp); |
| 266 |
+ |
} |
| 267 |
+ |
freefont(tp->f); /* release font reference */ |
| 268 |
+ |
free((void *)tp); |
| 269 |
+ |
m->os = NULL; |
| 270 |
+ |
} |
| 271 |
+ |
|
| 272 |
+ |
|
| 273 |
+ |
static int |
| 274 |
+ |
intext( /* check to see if p is in text glyph */ |
| 275 |
+ |
FVECT p, |
| 276 |
+ |
OBJREC *m |
| 277 |
+ |
) |
| 278 |
+ |
{ |
| 279 |
+ |
TEXT *tp; |
| 280 |
+ |
TLINE *tlp; |
| 281 |
+ |
FVECT v; |
| 282 |
+ |
double y, x; |
| 283 |
+ |
int i, h; |
| 284 |
+ |
/* first, compute position in text */ |
| 285 |
+ |
tp = gettext(m); |
| 286 |
+ |
v[0] = p[0] - m->oargs.farg[0]; |
| 287 |
+ |
v[1] = p[1] - m->oargs.farg[1]; |
| 288 |
+ |
v[2] = p[2] - m->oargs.farg[2]; |
| 289 |
+ |
x = DOT(v, tp->right); |
| 290 |
+ |
i = sndx(m); |
| 291 |
+ |
if (i < m->oargs.nfargs) |
| 292 |
+ |
x *= tp->f->mwidth + 255.*fabs(m->oargs.farg[i]); |
| 293 |
+ |
else |
| 294 |
+ |
x *= 255.; |
| 295 |
+ |
h = x; |
| 296 |
+ |
i = y = DOT(v, tp->down); |
| 297 |
+ |
if (x < 0.0 || y < 0.0) |
| 298 |
+ |
return(0); |
| 299 |
+ |
x -= (double)h; |
| 300 |
+ |
y = ((i+1) - y)*255.; |
| 301 |
+ |
/* find the line position */ |
| 302 |
+ |
for (tlp = tp->tl.next; tlp != NULL; tlp = tlp->next) |
| 303 |
+ |
if (--i < 0) |
| 304 |
+ |
break; |
| 305 |
+ |
if (tlp == NULL || h >= tlp->width) |
| 306 |
+ |
return(0); |
| 307 |
+ |
for (i = 0; (h -= tlp->spc[i]) >= 0; i++) |
| 308 |
+ |
if (h < 255 && inglyph(h+x, y, |
| 309 |
+ |
tp->f->fg[TLSTR(tlp)[i]&0xff])) |
| 310 |
+ |
return(1); |
| 311 |
+ |
return(0); |
| 312 |
+ |
} |
| 313 |
+ |
|
| 314 |
+ |
|
| 315 |
+ |
static int |
| 316 |
+ |
inglyph( /* (x,y) within font glyph gl? */ |
| 317 |
+ |
double x, /* real coordinates in range [0,255) */ |
| 318 |
+ |
double y, |
| 319 |
+ |
GLYPH *gl |
| 320 |
+ |
) |
| 321 |
+ |
{ |
| 322 |
|
int n, ncross; |
| 323 |
|
int xlb, ylb; |
| 324 |
< |
register GLYPH *p0, *p1; |
| 324 |
> |
int tv; |
| 325 |
> |
GORD *p0, *p1; |
| 326 |
|
|
| 327 |
< |
if (x < 0.0 || y < 0.0) |
| 327 |
> |
if (gl == NULL) |
| 328 |
|
return(0); |
| 329 |
< |
x *= 256.0; /* get glyph coordinates */ |
| 330 |
< |
y *= 256.0; |
| 331 |
< |
xlb = x + 0.5; |
| 332 |
< |
ylb = y + 0.5; |
| 333 |
< |
n = *gl++; /* get # of vertices */ |
| 334 |
< |
p0 = gl + 2*(n-1); /* connect last to first */ |
| 335 |
< |
p1 = gl; |
| 329 |
> |
xlb = x; |
| 330 |
> |
ylb = y; |
| 331 |
> |
if (gl->left > xlb || gl->right <= xlb || /* check extent */ |
| 332 |
> |
gl->bottom > ylb || gl->top <= ylb) |
| 333 |
> |
return(0); |
| 334 |
> |
xlb = xlb<<1 | 1; /* add 1/2 to test points... */ |
| 335 |
> |
ylb = ylb<<1 | 1; /* ...so no equal comparisons */ |
| 336 |
> |
n = gl->nverts; /* get # of vertices */ |
| 337 |
> |
p0 = gvlist(gl) + 2*(n-1); /* connect last to first */ |
| 338 |
> |
p1 = gvlist(gl); |
| 339 |
|
ncross = 0; |
| 340 |
|
/* positive x axis cross test */ |
| 341 |
|
while (n--) { |
| 342 |
< |
if ((p0[1] > ylb) ^ (p1[1] > ylb)) |
| 343 |
< |
if (p0[0] > xlb && p1[0] > xlb) |
| 342 |
> |
if ((p0[1]<<1 > ylb) ^ (p1[1]<<1 > ylb)) { |
| 343 |
> |
tv = (p0[0]<<1 > xlb) | ((p1[0]<<1 > xlb) << 1); |
| 344 |
> |
if (tv == 03) |
| 345 |
|
ncross++; |
| 346 |
< |
else if (p0[0] > xlb || p1[0] > xlb) |
| 346 |
> |
else if (tv) |
| 347 |
|
ncross += (p1[1] > p0[1]) ^ |
| 348 |
|
((p0[1]-y)*(p1[0]-x) > |
| 349 |
|
(p0[0]-x)*(p1[1]-y)); |
| 350 |
+ |
} |
| 351 |
|
p0 = p1; |
| 352 |
|
p1 += 2; |
| 353 |
|
} |
