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Make rainbow effects more colorful (#3681)

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* Make color_wheel rotate in HSV sapce instead of linearly interpolating R->G->B
* Remove the rainbow wheel option, as that is the same as the rainbow palette
* Use hsv2rgb for color_wheel

This is the current result of the discussion in https://github.com/wled/WLED/pull/3681
This commit is contained in:
TripleWhy
2025-08-15 20:19:18 +02:00
committed by GitHub
parent c8d8ab020e
commit b8b59b2bb1
6 changed files with 5 additions and 24 deletions
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23
wled00/FX_fcn.cpp Executable file → Normal file
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@@ -1085,27 +1085,14 @@ void Segment::blur(uint8_t blur_amount, bool smear) const {
/*
* Put a value 0 to 255 in to get a color value.
* The colours are a transition r -> g -> b -> back to r
* Inspired by the Adafruit examples.
* Rotates the color in HSV space, where pos is H. (0=0deg, 256=360deg)
*/
uint32_t Segment::color_wheel(uint8_t pos) const {
if (palette) return color_from_palette(pos, false, false, 0); // never wrap palette
if (palette) return color_from_palette(pos, false, false, 0); // only wrap if "always wrap" is set
uint8_t w = W(getCurrentColor(0));
pos = 255 - pos;
if (useRainbowWheel) {
CRGB rgb;
hsv2rgb_rainbow(CHSV(pos, 255, 255), rgb);
return RGBW32(rgb.r, rgb.g, rgb.b, w);
} else {
if (pos < 85) {
return RGBW32((255 - pos * 3), 0, (pos * 3), w);
} else if (pos < 170) {
pos -= 85;
return RGBW32(0, (pos * 3), (255 - pos * 3), w);
} else {
pos -= 170;
return RGBW32((pos * 3), (255 - pos * 3), 0, w);
}
}
uint32_t rgb;
hsv2rgb(CHSV32(static_cast<uint16_t>(pos << 8), 255, 255), rgb);
return rgb | (w << 24); // add white channel
}
/*