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Add new RGB matrix effect digital rain aka The Matrix

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Daniel Shields 2018-09-03 08:26:53 +01:00 committed by Jack Humbert
parent 627ee050b4
commit 4d5705ea6c
2 changed files with 67 additions and 0 deletions
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66
quantum/rgb_matrix.c
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@ -510,6 +510,69 @@ void rgb_matrix_jellybean_raindrops( bool initialize ) {
}
}
void rgb_matrix_digital_rain( const bool initialize ) {
// algorithm ported from https://github.com/tremby/Kaleidoscope-LEDEffect-DigitalRain
const uint8_t drop_ticks = 28;
const uint8_t new_drop_probability = 24;
const uint8_t pure_green_intensity = 0xd0;
const uint8_t max_brightness_boost = 0xc0;
const uint8_t max_intensity = 0xff;
static uint8_t map[MATRIX_COLS][MATRIX_ROWS] = {{0}};
static uint8_t drop = 0;
if (initialize) {
rgb_matrix_set_color_all(0, 0, 0);
memset(map, 0, sizeof map);
drop = 0;
}
for (uint8_t col = 0; col < MATRIX_COLS; col++) {
for (uint8_t row = 0; row < MATRIX_ROWS; row++) {
if (row == 0 && drop == 0 && rand() < RAND_MAX / new_drop_probability) {
// top row, pixels have just fallen and we're
// making a new rain drop in this column
map[col][row] = max_intensity;
}
else if (map[col][row] > 0 && map[col][row] < max_intensity) {
// neither fully bright nor dark, decay it
map[col][row]--;
}
// set the pixel colour
uint8_t led, led_count;
map_row_column_to_led(row, col, &led, &led_count);
if (map[col][row] > pure_green_intensity) {
const uint8_t boost = (uint8_t) ((uint16_t) max_brightness_boost
* (map[col][row] - pure_green_intensity) / (max_intensity - pure_green_intensity));
rgb_matrix_set_color(led, boost, max_intensity, boost);
}
else {
const uint8_t green = (uint8_t) ((uint16_t) max_intensity * map[col][row] / pure_green_intensity);
rgb_matrix_set_color(led, 0, green, 0);
}
}
}
if (++drop > drop_ticks) {
// reset drop timer
drop = 0;
for (uint8_t row = MATRIX_ROWS - 1; row > 0; row--) {
for (uint8_t col = 0; col < MATRIX_COLS; col++) {
// if ths is on the bottom row and bright allow decay
if (row == MATRIX_ROWS - 1 && map[col][row] == max_intensity) {
map[col][row]--;
}
// check if the pixel above is bright
if (map[col][row - 1] == max_intensity) {
// allow old bright pixel to decay
map[col][row - 1]--;
// make this pixel bright
map[col][row] = max_intensity;
}
}
}
}
}
void rgb_matrix_multisplash(void) {
// if (g_any_key_hit < 0xFF) {
HSV hsv = { .h = rgb_matrix_config.hue, .s = rgb_matrix_config.sat, .v = rgb_matrix_config.val };
@ -685,6 +748,9 @@ void rgb_matrix_task(void) {
case RGB_MATRIX_JELLYBEAN_RAINDROPS:
rgb_matrix_jellybean_raindrops( initialize );
break;
case RGB_MATRIX_DIGITAL_RAIN:
rgb_matrix_digital_rain( initialize );
break;
#ifdef RGB_MATRIX_KEYPRESSES
case RGB_MATRIX_SOLID_REACTIVE:
rgb_matrix_solid_reactive();

1
quantum/rgb_matrix.h
View file

@ -81,6 +81,7 @@ enum rgb_matrix_effects {
RGB_MATRIX_RAINBOW_PINWHEELS,
RGB_MATRIX_RAINBOW_MOVING_CHEVRON,
RGB_MATRIX_JELLYBEAN_RAINDROPS,
RGB_MATRIX_DIGITAL_RAIN,
#ifdef RGB_MATRIX_KEYPRESSES
RGB_MATRIX_SOLID_REACTIVE,
RGB_MATRIX_SPLASH,