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authorGravatar Jordi Orlando <0xdec@users.noreply.github.com>2016-07-26 15:31:22 -0500
committerGravatar GitHub <noreply@github.com>2016-07-26 15:31:22 -0500
commitea2d2f5d5841791745c93ef27cd1528a7fd69c97 (patch)
treee902f3ea83255c2ada2b79e50f11507563308725 /quantum
parent899c88cd8bf024792760fcf3ee8be6fed13fb315 (diff)
downloadqmk_firmware-ea2d2f5d5841791745c93ef27cd1528a7fd69c97.tar.gz
Simplify HSV->RGB calculation
De-dupe repeated code
Diffstat (limited to 'quantum')
-rw-r--r--quantum/rgblight.c26
1 files changed, 12 insertions, 14 deletions
diff --git a/quantum/rgblight.c b/quantum/rgblight.c
index c2841b851..f82e3ec55 100644
--- a/quantum/rgblight.c
+++ b/quantum/rgblight.c
@@ -55,57 +55,56 @@ uint8_t rgblight_inited = 0;
void sethsv(uint16_t hue, uint8_t sat, uint8_t val, struct cRGB *led1) {
- /* Convert hue, saturation and brightness ( HSB/HSV ) to RGB. The DIM_CURVE is
- used only on brightness/value and on saturation (inverted). This looks the
- most natural. */
- uint8_t r = 0, g = 0, b = 0;
+ // Convert hue, saturation, and value (HSV/HSB) to RGB. DIM_CURVE is used only
+ // on value and saturation (inverted). This looks the most natural.
+ uint8_t r = 0, g = 0, b = 0, base, color;
val = pgm_read_byte(&DIM_CURVE[val]);
sat = 255 - pgm_read_byte(&DIM_CURVE[255 - sat]);
- uint8_t base;
-
if (sat == 0) { // Acromatic color (gray). Hue doesn't mind.
r = val;
g = val;
b = val;
} else {
base = ((255 - sat) * val) >> 8;
+ color = (val - base) * (hue % 60) / 60;
switch (hue / 60) {
case 0:
r = val;
- g = (((val - base) * hue) / 60) + base;
+ g = base + color;
b = base;
break;
case 1:
- r = (((val - base) * (60 - (hue % 60))) / 60) + base;
+ r = val - color;
g = val;
b = base;
break;
case 2:
r = base;
g = val;
- b = (((val - base) * (hue % 60)) / 60) + base;
+ b = base + color;
break;
case 3:
r = base;
- g = (((val - base) * (60 - (hue % 60))) / 60) + base;
+ g = val - color;
b = val;
break;
case 4:
- r = (((val - base) * (hue % 60)) / 60) + base;
+ r = base + color;
g = base;
b = val;
break;
case 5:
r = val;
g = base;
- b = (((val - base) * (60 - (hue % 60))) / 60) + base;
+ b = val - color;
break;
}
}
- setrgb(r,g,b, led1);
+
+ setrgb(r, g, b, led1);
}
void setrgb(uint8_t r, uint8_t g, uint8_t b, struct cRGB *led1) {
@@ -346,7 +345,6 @@ void rgblight_set(void) {
}
}
-
#if !defined(AUDIO_ENABLE) && defined(RGBLIGHT_TIMER)
// Animation timer -- AVR Timer3