brooke/dither4
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity

force white also

Browse source 
this leaves us with only two new colors per row
but gives more dither possibilities
This commit is contained in:
Brooke Vibber 2022-11-05 18:02:00 -07:00
parent e5a9c68d05
commit ed9538ecc5
1 changed files with 8 additions and 3 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

11
dither4.js
View file

@ -398,6 +398,12 @@ function decimate(input, palette, n) {
let least = Infinity;
let pick = -1;
for (let i = 1; i < decimated.length; i++) {
if (i == 0) {
continue; // keep black always
}
if (decimated[i].r == 255 && decimated[i].g == 255 && decimated[i].b == 255) {
continue; // keep white always
}
if (popularity[i] < least) {
pick = i;
least = popularity[i];
@ -405,9 +411,6 @@ function decimate(input, palette, n) {
}
let old = decimated.length;
decimated = decimated.filter((rgb, i) => {
if (i == 0) {
return true; // keep black always
}
if (i == pick) {
return false;
}
@ -417,6 +420,8 @@ function decimate(input, palette, n) {
return true;
});
if (decimated.length >= old) {
console.log(decimated);
debugger;
throw new Error('logic error');
}
}