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more efficient getColorsImage fn

master
Gordon Williams 2024-04-04 17:04:12 +01:00
parent fdab58c5c0
commit 1156ba6ba2
1 changed files with 7 additions and 2 deletions
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9
apps/clockbg/app.js
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@ -14,9 +14,14 @@ function saveSettings() {
}
function getColorsImage(cols) {
var b = Graphics.createArrayBuffer(16*cols.length,16,16);
var bpp = 1;
if (cols.length>4) bpp=4;
else if (cols.length>2) bpp=2;
var b = Graphics.createArrayBuffer(16*cols.length,16,bpp);
b.palette = new Uint16Array(1<<bpp);
cols.forEach((c,i)=>{
b.setColor(c).fillRect(i*16,0,i*16+15,15);
b.setColor(i).fillRect(i*16,0,i*16+15,15);
b.palette[i] = g.toColor(c);
});
return "\0"+b.asImage("string");
}