4 Copyright (c) 2016 Fred Sundvik
6 Permission is hereby granted, free of charge, to any person obtaining a copy
7 of this software and associated documentation files (the "Software"), to deal
8 in the Software without restriction, including without limitation the rights
9 to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
10 copies of the Software, and to permit persons to whom the Software is
11 furnished to do so, subject to the following conditions:
13 The above copyright notice and this permission notice shall be included in all
14 copies or substantial portions of the Software.
16 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
19 AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20 LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
21 OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
26 #include "led_backlight_keyframes.h"
28 static uint8_t fade_led_color(keyframe_animation_t* animation, int from, int to) {
29 int frame_length = animation->frame_lengths[animation->current_frame];
30 int current_pos = frame_length - animation->time_left_in_frame;
31 int delta = to - from;
32 int luma = (delta * current_pos) / frame_length;
37 static void keyframe_fade_all_leds_from_to(keyframe_animation_t* animation, uint8_t from, uint8_t to) {
38 uint8_t luma = fade_led_color(animation, from, to);
39 color_t color = LUMA2COLOR(luma);
40 gdispGClear(LED_DISPLAY, color);
43 // TODO: Should be customizable per keyboard
44 #define NUM_ROWS LED_HEIGHT
45 #define NUM_COLS LED_WIDTH
47 static uint8_t crossfade_start_frame[NUM_ROWS][NUM_COLS];
48 static uint8_t crossfade_end_frame[NUM_ROWS][NUM_COLS];
50 static uint8_t compute_gradient_color(float t, float index, float num) {
51 const float two_pi = M_PI * 2.0f;
52 float normalized_index = (1.0f - index / (num - 1.0f)) * two_pi;
53 float x = t * two_pi + normalized_index;
54 float v = 0.5 * (cosf(x) + 1.0f);
55 return (uint8_t)(255.0f * v);
58 bool led_backlight_keyframe_fade_in_all(keyframe_animation_t* animation, visualizer_state_t* state) {
60 keyframe_fade_all_leds_from_to(animation, 0, 255);
64 bool led_backlight_keyframe_fade_out_all(keyframe_animation_t* animation, visualizer_state_t* state) {
66 keyframe_fade_all_leds_from_to(animation, 255, 0);
70 bool led_backlight_keyframe_left_to_right_gradient(keyframe_animation_t* animation, visualizer_state_t* state) {
72 float frame_length = animation->frame_lengths[animation->current_frame];
73 float current_pos = frame_length - animation->time_left_in_frame;
74 float t = current_pos / frame_length;
75 for (int i=0; i< NUM_COLS; i++) {
76 uint8_t color = compute_gradient_color(t, i, NUM_COLS);
77 gdispGDrawLine(LED_DISPLAY, i, 0, i, NUM_ROWS - 1, LUMA2COLOR(color));
82 bool led_backlight_keyframe_top_to_bottom_gradient(keyframe_animation_t* animation, visualizer_state_t* state) {
84 float frame_length = animation->frame_lengths[animation->current_frame];
85 float current_pos = frame_length - animation->time_left_in_frame;
86 float t = current_pos / frame_length;
87 for (int i=0; i< NUM_ROWS; i++) {
88 uint8_t color = compute_gradient_color(t, i, NUM_ROWS);
89 gdispGDrawLine(LED_DISPLAY, 0, i, NUM_COLS - 1, i, LUMA2COLOR(color));
94 static void copy_current_led_state(uint8_t* dest) {
95 for (int i=0;i<NUM_ROWS;i++) {
96 for (int j=0;j<NUM_COLS;j++) {
97 dest[i*NUM_COLS + j] = gdispGGetPixelColor(LED_DISPLAY, j, i);
101 bool led_backlight_keyframe_crossfade(keyframe_animation_t* animation, visualizer_state_t* state) {
103 if (animation->first_update_of_frame) {
104 copy_current_led_state(&crossfade_start_frame[0][0]);
105 run_next_keyframe(animation, state);
106 copy_current_led_state(&crossfade_end_frame[0][0]);
108 for (int i=0;i<NUM_ROWS;i++) {
109 for (int j=0;j<NUM_COLS;j++) {
110 color_t color = LUMA2COLOR(fade_led_color(animation, crossfade_start_frame[i][j], crossfade_end_frame[i][j]));
111 gdispGDrawPixel(LED_DISPLAY, j, i, color);
117 bool led_backlight_keyframe_mirror_orientation(keyframe_animation_t* animation, visualizer_state_t* state) {
120 gdispGSetOrientation(LED_DISPLAY, GDISP_ROTATE_180);
124 bool led_backlight_keyframe_normal_orientation(keyframe_animation_t* animation, visualizer_state_t* state) {
127 gdispGSetOrientation(LED_DISPLAY, GDISP_ROTATE_0);
131 bool led_backlight_keyframe_disable(keyframe_animation_t* animation, visualizer_state_t* state) {
134 gdispGSetPowerMode(LED_DISPLAY, powerOff);
138 bool led_backlight_keyframe_enable(keyframe_animation_t* animation, visualizer_state_t* state) {
141 gdispGSetPowerMode(LED_DISPLAY, powerOn);