| 139 |
|
} |
| 140 |
|
|
| 141 |
|
|
| 142 |
+ |
static double |
| 143 |
+ |
greypoint( /* compute gamut mapping grey target */ |
| 144 |
+ |
COLOR col |
| 145 |
+ |
) |
| 146 |
+ |
{ |
| 147 |
+ |
COLOR gryc; |
| 148 |
+ |
int i; |
| 149 |
+ |
/* improves saturated color rendering */ |
| 150 |
+ |
copycolor(gryc, col); |
| 151 |
+ |
for (i = 3; i--; ) |
| 152 |
+ |
if (gryc[i] > cwhite[i]) |
| 153 |
+ |
gryc[i] = cwhite[i]; |
| 154 |
+ |
else if (gryc[i] < cblack[i]) |
| 155 |
+ |
gryc[i] = cblack[i]; |
| 156 |
+ |
return((*lumf)(gryc,0)); |
| 157 |
+ |
} |
| 158 |
+ |
|
| 159 |
+ |
|
| 160 |
|
static void |
| 161 |
|
matscan( /* apply color matrix to scaline */ |
| 162 |
|
register COLOR *sl, |
| 164 |
|
COLORMAT mat |
| 165 |
|
) |
| 166 |
|
{ |
| 167 |
+ |
double gryv; |
| 168 |
+ |
|
| 169 |
|
while (len--) { |
| 170 |
+ |
gryv = greypoint(sl[0]); |
| 171 |
|
colortrans(sl[0], mat, sl[0]); |
| 172 |
< |
clipgamut(sl[0], bright(sl[0]), CGAMUT, cblack, cwhite); |
| 172 |
> |
clipgamut(sl[0], gryv, CGAMUT, cblack, cwhite); |
| 173 |
|
sl++; |
| 174 |
|
} |
| 175 |
|
} |
| 186 |
|
register int i, j; |
| 187 |
|
|
| 188 |
|
while (len--) { |
| 189 |
+ |
d = greypoint(sl[0]); |
| 190 |
|
colortrans(sl[0], mb->cmat, sl[0]); |
| 191 |
< |
clipgamut(sl[0], bright(sl[0]), CGAMUT, mb->cmin, mb->cmax); |
| 191 |
> |
clipgamut(sl[0], d, CGAMUT, mb->cmin, mb->cmax); |
| 192 |
|
for (i = 0; i < 3; i++) { |
| 193 |
|
d = colval(sl[0],i); |
| 194 |
|
for (j = 0; j < 4 && mb->xa[i][j+1] <= d; j++) |
| 210 |
|
) |
| 211 |
|
{ |
| 212 |
|
int rval; |
| 213 |
+ |
double gryv; |
| 214 |
|
|
| 215 |
|
while (len--) { |
| 216 |
+ |
gryv = greypoint(sl[0]); |
| 217 |
|
rval = warp3d(sl[0], sl[0], wp); |
| 218 |
|
if (rval & W3ERROR) |
| 219 |
|
syserror("warp3d"); |
| 222 |
|
progname, cwarpfile); |
| 223 |
|
exit(1); |
| 224 |
|
} |
| 225 |
< |
clipgamut(sl[0], bright(sl[0]), CGAMUT, cblack, cwhite); |
| 225 |
> |
clipgamut(sl[0], gryv, CGAMUT, cblack, cwhite); |
| 226 |
|
sl++; |
| 227 |
|
} |
| 228 |
|
} |