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account for rgb

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jane 2021-05-25 23:46:40 -04:00
parent 9e1c0f5be1
commit e337625791
1 changed files with 28 additions and 8 deletions
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36
lights.js
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@ -9,6 +9,16 @@ var pixel_cache = new Uint32Array(cfg.leds);
var next_pattern = new Uint32Array(cfg.leds); var next_pattern = new Uint32Array(cfg.leds);
var pattern = {} var pattern = {}
function rgb_to_int(r, g, b) {
return ((r << 8) + g) << 8 + b;
}
function int_to_rgb(int) {
var r = int >> 16 & 0xFF;
var g = int >> 8 & 0xFF;
var b = int & 0xFF;
return { r: r, g: g, b: b };
}
ws281x.configure({ ws281x.configure({
leds: cfg.leds || 300, leds: cfg.leds || 300,
brightness: cfg.brightness || 200, brightness: cfg.brightness || 200,
@ -47,16 +57,26 @@ export function tick() {
} }
function fade(index) { function fade(index) {
var original = pixel_cache[index]; var original = int_to_rgb(pixel_cache[index]);
var final = next_pattern[index]; var current = int_to_rgb(pixels[index]);
var diff = final - original; var final = int_to_rgb(next_pattern[index]);
var interval = diff / fade_ticks; var diff_r = final.r - original.r;
var diff_g = final.g - original.g;
var diff_b = final.b - original.b;
var interval_r = diff_r / fade_ticks;
var interval_g = diff_g / fade_ticks;
var interval_b = diff_b / fade_ticks;
if (Math.abs(final - pixels[index]) < interval) { if (Math.abs(final.r - current.r) < interval_r &&
pixels[index] = final; Math.abs(final.g - current.g) < interval_g &&
pixel_cache[index] = final; Math.abs(final.b - current.b) < interval_b
) {
pixels[index] = next_pattern[index];
pixel_cache[index] = next_pattern[index];
} }
else { else {
pixels[index] += interval; pixels[index] = rgb_to_int(current.r + interval_r,
current.g + interval_g,
current.b + interval_b);
} }
} }