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led_driver: Modify the calculation method of HSV to RGB conversion

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wanghuixiao
2023-01-31 15:37:15 +08:00
parent 13468e8799
commit e654110b81
1 changed files with 37 additions and 24 deletions
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device_hal/led_driver/utils/color_format.c
+37 -24
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@@ -15,44 +15,57 @@
void hsv_to_rgb(HS_color_t HS, uint8_t brightness, RGB_color_t *RGB)
{
uint16_t sector = HS.hue / 60;
uint16_t rgb_max = brightness;
uint16_t rgb_min = rgb_max * (100 - HS.saturation) / 100;
uint16_t offset = HS.hue % 60;
uint16_t rgb_adj = (rgb_max - rgb_min) * offset / 60;
uint16_t hue = HS.hue % 360;
uint16_t hi = (hue / 60) % 6;
uint16_t F = 100 * hue / 60 - 100 * hi;
uint16_t P = brightness * (100 - HS.saturation) / 100;
uint16_t Q = brightness * (10000 - F * HS.saturation) / 10000;
uint16_t T = brightness * (10000 - HS.saturation * (100 - F)) / 10000;
switch (sector) {
switch (hi) {
case 0:
RGB->red = rgb_max;
RGB->green = rgb_min + rgb_adj;
RGB->blue = rgb_min;
RGB->red = brightness;
RGB->green = T;
RGB->blue = P;
break;
case 1:
RGB->red = rgb_max - rgb_adj;
RGB->green = rgb_max;
RGB->blue = rgb_min;
RGB->red = Q;
RGB->green = brightness;
RGB->blue = P;
break;
case 2:
RGB->red = rgb_min;
RGB->green = rgb_max;
RGB->blue = rgb_min + rgb_adj;
RGB->red = P;
RGB->green = brightness;
RGB->blue = T;
break;
case 3:
RGB->red = rgb_min;
RGB->green = rgb_max - rgb_adj;
RGB->blue = rgb_max;
RGB->red = P;
RGB->green = Q;
RGB->blue = brightness;
break;
case 4:
RGB->red = rgb_min + rgb_adj;
RGB->green = rgb_min;
RGB->blue = rgb_max;
RGB->red = T;
RGB->green = P;
RGB->blue = brightness;
break;
case 5:
RGB->red = brightness;
RGB->green = P;
RGB->blue = Q;
break;
default:
RGB->red = rgb_max;
RGB->green = rgb_min;
RGB->blue = rgb_max - rgb_adj;
break;
}
RGB->red = RGB->red * 255 / 100;
RGB->green = RGB->green * 255 / 100;
RGB->blue = RGB->blue * 255 / 100;
}
// A Table from color temperature to hue and saturation.