/* Copyright 2017 Fred Sundvik * * 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 . */ #include "lcd_backlight_keyframes.h" bool lcd_backlight_keyframe_animate_color(keyframe_animation_t* animation, visualizer_state_t* state) { int frame_length = animation->frame_lengths[animation->current_frame]; int current_pos = frame_length - animation->time_left_in_frame; uint8_t t_h = LCD_HUE(state->target_lcd_color); uint8_t t_s = LCD_SAT(state->target_lcd_color); uint8_t t_i = LCD_INT(state->target_lcd_color); uint8_t p_h = LCD_HUE(state->prev_lcd_color); uint8_t p_s = LCD_SAT(state->prev_lcd_color); uint8_t p_i = LCD_INT(state->prev_lcd_color); uint8_t d_h1 = t_h - p_h; // Modulo arithmetic since we want to wrap around int d_h2 = t_h - p_h; // Chose the shortest way around int d_h = abs(d_h2) < d_h1 ? d_h2 : d_h1; int d_s = t_s - p_s; int d_i = t_i - p_i; int hue = (d_h * current_pos) / frame_length; int sat = (d_s * current_pos) / frame_length; int intensity = (d_i * current_pos) / frame_length; // dprintf("%X -> %X = %X\n", p_h, t_h, hue); hue += p_h; sat += p_s; intensity += p_i; state->current_lcd_color = LCD_COLOR(hue, sat, intensity); lcd_backlight_color(LCD_HUE(state->current_lcd_color), LCD_SAT(state->current_lcd_color), LCD_INT(state->current_lcd_color)); return true; } bool lcd_backlight_keyframe_set_color(keyframe_animation_t* animation, visualizer_state_t* state) { (void)animation; state->prev_lcd_color = state->target_lcd_color; state->current_lcd_color = state->target_lcd_color; lcd_backlight_color(LCD_HUE(state->current_lcd_color), LCD_SAT(state->current_lcd_color), LCD_INT(state->current_lcd_color)); return false; } bool lcd_backlight_keyframe_disable(keyframe_animation_t* animation, visualizer_state_t* state) { (void)animation; (void)state; lcd_backlight_hal_color(0, 0, 0); return false; } bool lcd_backlight_keyframe_enable(keyframe_animation_t* animation, visualizer_state_t* state) { (void)animation; (void)state; lcd_backlight_color(LCD_HUE(state->current_lcd_color), LCD_SAT(state->current_lcd_color), LCD_INT(state->current_lcd_color)); return false; } 0decdbd7c592a49b08ad156afbe107e0da (plain) 
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