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leds 2D preview: better color accuracy

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* replace "jumpy" color enhancement with a smooth function
* slightly increase size of preview pixels
This commit is contained in:
Frank
2026-01-29 13:49:53 +01:00
parent 1210881bd8
commit 1d686d7807
1 changed files with 4 additions and 2 deletions
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6
wled00/data/peek.js
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@@ -30,13 +30,15 @@ function peek(c) {
ctx.clearRect(0, 0, c.width, c.height); //WLEDMM
function colorAmp(color) {
if (color == 0) return 0;
return 25+225*color/255;
//return color; // no enhancement
//return 25+225*color/255; // legacy WLEDMM. problem: strong jump from 0 to 25 -> wrong colors
return Math.sqrt(color/255) * 255; // Square root provides gentle and jump-free enhancement of lower brightness pixels
} //WLEDMM in range 55 - 205
for (y=0.5;y<mH;y++) for (x=0.5; x<mW; x++) {
if (leds[i]!= 0 || leds[i+1]!= 0 || leds[i+2]!= 0) { //WLEDMM: do not show blacks
ctx.fillStyle = `rgb(${colorAmp(leds[i])},${colorAmp(leds[i+1])},${colorAmp(leds[i+2])})`;
ctx.beginPath();
ctx.arc(x*pPL+lOf, y*pPL, pPL*0.4, 0, 2 * Math.PI);
ctx.arc(x*pPL+lOf, y*pPL, pPL*0.45, 0, 2 * Math.PI); // WLEDMM legacy radius was 0.4 -> 0.45
ctx.fill();
}
i+=3;