Rename RGB fractal (#15174)

Co-authored-by: filterpaper <filterpaper@localhost>

docs/feature_rgb_matrix.md

@@ -453,7 +453,7 @@ enum rgb_matrix_effects {
     RGB_MATRIX_HUE_BREATHING,       // Hue shifts up a slight ammount at the same time, then shifts back
     RGB_MATRIX_HUE_PENDULUM,        // Hue shifts up a slight ammount in a wave to the right, then back to the left
     RGB_MATRIX_HUE_WAVE,            // Hue shifts up a slight ammount and then back down in a wave to the right
-    RGB_MATRIX_FRACTAL,             // Single hue fractal filled keys pulsing horizontally out to edges
+    RGB_MATRIX_PIXEL_FRACTAL,       // Single hue fractal filled keys pulsing horizontally out to edges
     RGB_MATRIX_PIXEL_RAIN,          // Randomly light keys with random hues
 #if define(RGB_MATRIX_FRAMEBUFFER_EFFECTS)
     RGB_MATRIX_TYPING_HEATMAP,      // How hot is your WPM!
@@ -508,7 +508,7 @@ You can enable a single effect by defining `ENABLE_[EFFECT_NAME]` in your `confi
 |`#define ENABLE_RGB_MATRIX_HUE_BREATHING`             |Enables `RGB_MATRIX_HUE_BREATHING`            |
 |`#define ENABLE_RGB_MATRIX_HUE_PENDULUM`              |Enables `RGB_MATRIX_HUE_PENDULUM`             |
 |`#define ENABLE_RGB_MATRIX_HUE_WAVE`                  |Enables `RGB_MATRIX_HUE_WAVE `                |
-|`#define ENABLE_RGB_MATRIX_FRACTAL`                   |Enables `RGB_MATRIX_FRACTAL`                  |
+|`#define ENABLE_RGB_MATRIX_PIXEL_FRACTAL`             |Enables `RGB_MATRIX_PIXEL_FRACTAL`            |
 |`#define ENABLE_RGB_MATRIX_PIXEL_RAIN`                |Enables `RGB_MATRIX_PIXEL_RAIN`               |
 
 ?> These modes don't require any additional defines.

quantum/rgb_matrix/animations/pixel_fractal_anim.h

@@ -0,0 +1,74 @@
+/* Copyright (C) 2021 @filterpaper
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+// Inspired from 4x12 fractal created by @schwarzgrau
+
+#ifdef ENABLE_RGB_MATRIX_PIXEL_FRACTAL
+RGB_MATRIX_EFFECT(PIXEL_FRACTAL)
+#    ifdef RGB_MATRIX_CUSTOM_EFFECT_IMPLS
+
+static bool PIXEL_FRACTAL(effect_params_t* params) {
+#        define MID_COL MATRIX_COLS / 2
+    static bool led[MATRIX_ROWS][MATRIX_COLS];
+
+    static uint32_t wait_timer = 0;
+    if (wait_timer > g_rgb_timer) {
+        return false;
+    }
+
+    inline uint32_t interval(void) { return 3000 / scale16by8(qadd8(rgb_matrix_config.speed, 16), 16); }
+
+    RGB rgb = rgb_matrix_hsv_to_rgb(rgb_matrix_config.hsv);
+    for (uint8_t h = 0; h < MATRIX_ROWS; ++h) {
+        for (uint8_t l = 0; l < MID_COL - 1; ++l) {  // Light and move left columns outwards
+            if (led[h][l]) {
+                rgb_matrix_set_color(g_led_config.matrix_co[h][l], rgb.r, rgb.g, rgb.b);
+            } else {
+                rgb_matrix_set_color(g_led_config.matrix_co[h][l], 0, 0, 0);
+            }
+            led[h][l] = led[h][l + 1];
+        }
+
+        for (uint8_t r = MATRIX_COLS - 1; r > MID_COL; --r) {  // Light and move right columns outwards
+            if (led[h][r]) {
+                rgb_matrix_set_color(g_led_config.matrix_co[h][r], rgb.r, rgb.g, rgb.b);
+            } else {
+                rgb_matrix_set_color(g_led_config.matrix_co[h][r], 0, 0, 0);
+            }
+            led[h][r] = led[h][r - 1];
+        }
+
+        // Light both middle columns
+        if (led[h][MID_COL]) {
+            rgb_matrix_set_color(g_led_config.matrix_co[h][MID_COL], rgb.r, rgb.g, rgb.b);
+        } else {
+            rgb_matrix_set_color(g_led_config.matrix_co[h][MID_COL], 0, 0, 0);
+        }
+        if (led[h][MID_COL - 1]) {
+            rgb_matrix_set_color(g_led_config.matrix_co[h][MID_COL - 1], rgb.r, rgb.g, rgb.b);
+        } else {
+            rgb_matrix_set_color(g_led_config.matrix_co[h][MID_COL - 1], 0, 0, 0);
+        }
+
+        // Generate new random fractal columns
+        led[h][MID_COL] = led[h][MID_COL - 1] = (random8() & 3) ? false : true;
+    }
+
+    wait_timer = g_rgb_timer + interval();
+    return false;
+}
+#    endif  // RGB_MATRIX_CUSTOM_EFFECT_IMPLS
+#endif      // ENABLE_RGB_MATRIX_PIXEL_FRACTAL

quantum/rgb_matrix/animations/rgb_matrix_effects.inc

@@ -26,8 +26,8 @@
 #include "hue_breathing_anim.h"
 #include "hue_pendulum_anim.h"
 #include "hue_wave_anim.h"
-#include "fractal_anim.h"
 #include "pixel_rain_anim.h"
+#include "pixel_fractal_anim.h"
 #include "typing_heatmap_anim.h"
 #include "digital_rain_anim.h"
 #include "solid_reactive_simple_anim.h"