keyboard/qmk/users/anderson/dmc12.c

47 lines
1.5 KiB
C

#include "dmc12.h"
static uint32_t dmc12_color = 0;
static uint16_t dmc12_timer = 0;
static int8_t dmc12_current = 0;
static uint8_t dmc12_direction = 1;
void dmc12_start(uint32_t color, bool reset) {
dmc12_color = color;
if (reset) {
dmc12_timer = 0;
dmc12_current = 0;
dmc12_direction = 1;
}
}
void dmc12_process(void) {
if (!dmc12_timer) {
dmc12_timer = timer_read();
return;
}
float dist_from_center = ((float)abs(dmc12_current - RGBLED_NUM / 2)) / ((float)RGBLED_NUM);
if (timer_elapsed(dmc12_timer) > dist_from_center * LED_INTERVAL) {
dmc12_current += dmc12_direction;
if (dmc12_current == 0 || dmc12_current == RGBLED_NUM - 1) {
dmc12_direction *= -1;
}
dmc12_timer = timer_read();
for (int i = 0; i < RGBLED_NUM; i++) {
if (i > dmc12_current - LED_RADIUS && i < dmc12_current + LED_RADIUS) {
float intensity = (LED_RADIUS - abs(i - dmc12_current)) / ((float)LED_RADIUS);
if (i != dmc12_current) {
intensity /= 4.0;
}
rgblight_setrgb_at(
((dmc12_color >> 16) & 0xFF) * intensity,
((dmc12_color >> 8) & 0xFF) * intensity,
(dmc12_color & 0xFF) * intensity,
i
);
} else {
rgblight_setrgb_at(0, 0, 0, i);
}
}
}
}