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-rw-r--r--quantum/visualizer/led_keyframes.c129
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diff --git a/quantum/visualizer/led_keyframes.c b/quantum/visualizer/led_keyframes.c
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+/*
+The MIT License (MIT)
+
+Copyright (c) 2016 Fred Sundvik
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
+*/
+#include "gfx.h"
+#include "math.h"
+#include "led_keyframes.h"
+
+static uint8_t fade_led_color(keyframe_animation_t* animation, int from, int to) {
+ int frame_length = animation->frame_lengths[animation->current_frame];
+ int current_pos = frame_length - animation->time_left_in_frame;
+ int delta = to - from;
+ int luma = (delta * current_pos) / frame_length;
+ luma += from;
+ return luma;
+}
+
+static void keyframe_fade_all_leds_from_to(keyframe_animation_t* animation, uint8_t from, uint8_t to) {
+ uint8_t luma = fade_led_color(animation, from, to);
+ color_t color = LUMA2COLOR(luma);
+ gdispGClear(LED_DISPLAY, color);
+}
+
+// TODO: Should be customizable per keyboard
+#define NUM_ROWS 7
+#define NUM_COLS 7
+
+static uint8_t crossfade_start_frame[NUM_ROWS][NUM_COLS];
+static uint8_t crossfade_end_frame[NUM_ROWS][NUM_COLS];
+
+static uint8_t compute_gradient_color(float t, float index, float num) {
+ const float two_pi = M_2_PI;
+ float normalized_index = (1.0f - index / (num - 1.0f)) * two_pi;
+ float x = t * two_pi + normalized_index;
+ float v = 0.5 * (cosf(x) + 1.0f);
+ return (uint8_t)(255.0f * v);
+}
+
+bool led_keyframe_fade_in_all(keyframe_animation_t* animation, visualizer_state_t* state) {
+ (void)state;
+ keyframe_fade_all_leds_from_to(animation, 0, 255);
+ return true;
+}
+
+bool led_keyframe_fade_out_all(keyframe_animation_t* animation, visualizer_state_t* state) {
+ (void)state;
+ keyframe_fade_all_leds_from_to(animation, 255, 0);
+ return true;
+}
+
+bool led_keyframe_left_to_right_gradient(keyframe_animation_t* animation, visualizer_state_t* state) {
+ (void)state;
+ float frame_length = animation->frame_lengths[animation->current_frame];
+ float current_pos = frame_length - animation->time_left_in_frame;
+ float t = current_pos / frame_length;
+ for (int i=0; i< NUM_COLS; i++) {
+ uint8_t color = compute_gradient_color(t, i, NUM_COLS);
+ gdispGDrawLine(LED_DISPLAY, i, 0, i, NUM_ROWS - 1, LUMA2COLOR(color));
+ }
+ return true;
+}
+
+bool led_keyframe_top_to_bottom_gradient(keyframe_animation_t* animation, visualizer_state_t* state) {
+ (void)state;
+ float frame_length = animation->frame_lengths[animation->current_frame];
+ float current_pos = frame_length - animation->time_left_in_frame;
+ float t = current_pos / frame_length;
+ for (int i=0; i< NUM_ROWS; i++) {
+ uint8_t color = compute_gradient_color(t, i, NUM_ROWS);
+ gdispGDrawLine(LED_DISPLAY, 0, i, NUM_COLS - 1, i, LUMA2COLOR(color));
+ }
+ return true;
+}
+
+static void copy_current_led_state(uint8_t* dest) {
+ for (int i=0;i<NUM_ROWS;i++) {
+ for (int j=0;j<NUM_COLS;j++) {
+ dest[i*NUM_COLS + j] = gdispGGetPixelColor(LED_DISPLAY, j, i);
+ }
+ }
+}
+bool led_keyframe_crossfade(keyframe_animation_t* animation, visualizer_state_t* state) {
+ (void)state;
+ if (animation->first_update_of_frame) {
+ copy_current_led_state(&crossfade_start_frame[0][0]);
+ run_next_keyframe(animation, state);
+ copy_current_led_state(&crossfade_end_frame[0][0]);
+ }
+ for (int i=0;i<NUM_ROWS;i++) {
+ for (int j=0;j<NUM_COLS;j++) {
+ color_t color = LUMA2COLOR(fade_led_color(animation, crossfade_start_frame[i][j], crossfade_end_frame[i][j]));
+ gdispGDrawPixel(LED_DISPLAY, j, i, color);
+ }
+ }
+ return true;
+}
+
+bool led_keyframe_mirror_orientation(keyframe_animation_t* animation, visualizer_state_t* state) {
+ (void)state;
+ (void)animation;
+ gdispGSetOrientation(LED_DISPLAY, GDISP_ROTATE_180);
+ return false;
+}
+
+bool led_keyframe_normal_orientation(keyframe_animation_t* animation, visualizer_state_t* state) {
+ (void)state;
+ (void)animation;
+ gdispGSetOrientation(LED_DISPLAY, GDISP_ROTATE_0);
+ return false;
+}