diff options
author | Nick Brassel <nick@tzarc.org> | 2021-08-29 08:20:25 +1000 |
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committer | Nick Brassel <nick@tzarc.org> | 2021-08-29 08:20:25 +1000 |
commit | f061ca497464fe85284906fb163a33eaee7a91ef (patch) | |
tree | 33ef1bfb529aed382e8526c607c4e18717f92571 /quantum/rgb_matrix/animations/digital_rain_anim.h | |
parent | ff65185dec6f97be1eb49f17cea526a0d0bbf3d6 (diff) | |
parent | 4bad375d7c09d949a9dcdd4feba147c9c7a67ec6 (diff) |
Breaking changes develop merge to master, 2021Q3 edition. (#14196)
Diffstat (limited to 'quantum/rgb_matrix/animations/digital_rain_anim.h')
-rw-r--r-- | quantum/rgb_matrix/animations/digital_rain_anim.h | 75 |
1 files changed, 75 insertions, 0 deletions
diff --git a/quantum/rgb_matrix/animations/digital_rain_anim.h b/quantum/rgb_matrix/animations/digital_rain_anim.h new file mode 100644 index 0000000000..1de45f8e8d --- /dev/null +++ b/quantum/rgb_matrix/animations/digital_rain_anim.h @@ -0,0 +1,75 @@ +#if defined(RGB_MATRIX_FRAMEBUFFER_EFFECTS) && !defined(DISABLE_RGB_MATRIX_DIGITAL_RAIN) +RGB_MATRIX_EFFECT(DIGITAL_RAIN) +# ifdef RGB_MATRIX_CUSTOM_EFFECT_IMPLS + +# ifndef RGB_DIGITAL_RAIN_DROPS +// lower the number for denser effect/wider keyboard +# define RGB_DIGITAL_RAIN_DROPS 24 +# endif + +bool DIGITAL_RAIN(effect_params_t* params) { + // algorithm ported from https://github.com/tremby/Kaleidoscope-LEDEffect-DigitalRain + const uint8_t drop_ticks = 28; + const uint8_t pure_green_intensity = 0xd0; + const uint8_t max_brightness_boost = 0xc0; + const uint8_t max_intensity = 0xff; + + static uint8_t drop = 0; + + if (params->init) { + rgb_matrix_set_color_all(0, 0, 0); + memset(g_rgb_frame_buffer, 0, sizeof(g_rgb_frame_buffer)); + 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 / RGB_DIGITAL_RAIN_DROPS) { + // top row, pixels have just fallen and we're + // making a new rain drop in this column + g_rgb_frame_buffer[row][col] = max_intensity; + } else if (g_rgb_frame_buffer[row][col] > 0 && g_rgb_frame_buffer[row][col] < max_intensity) { + // neither fully bright nor dark, decay it + g_rgb_frame_buffer[row][col]--; + } + // set the pixel colour + uint8_t led[LED_HITS_TO_REMEMBER]; + uint8_t led_count = rgb_matrix_map_row_column_to_led(row, col, led); + + // TODO: multiple leds are supported mapped to the same row/column + if (led_count > 0) { + if (g_rgb_frame_buffer[row][col] > pure_green_intensity) { + const uint8_t boost = (uint8_t)((uint16_t)max_brightness_boost * (g_rgb_frame_buffer[row][col] - pure_green_intensity) / (max_intensity - pure_green_intensity)); + rgb_matrix_set_color(led[0], boost, max_intensity, boost); + } else { + const uint8_t green = (uint8_t)((uint16_t)max_intensity * g_rgb_frame_buffer[row][col] / pure_green_intensity); + rgb_matrix_set_color(led[0], 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 && g_rgb_frame_buffer[row][col] == max_intensity) { + g_rgb_frame_buffer[row][col]--; + } + // check if the pixel above is bright + if (g_rgb_frame_buffer[row - 1][col] == max_intensity) { + // allow old bright pixel to decay + g_rgb_frame_buffer[row - 1][col]--; + // make this pixel bright + g_rgb_frame_buffer[row][col] = max_intensity; + } + } + } + } + return false; +} + +# endif // RGB_MATRIX_CUSTOM_EFFECT_IMPLS +#endif // defined(RGB_MATRIX_FRAMEBUFFER_EFFECTS) && !defined(DISABLE_RGB_MATRIX_DIGITAL_RAIN) |