77 lines
2.9 KiB
C
77 lines
2.9 KiB
C
/* Copyright 2017 Fred Sundvik
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "lcd_backlight_keyframes.h"
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bool lcd_backlight_keyframe_animate_color(keyframe_animation_t* animation, visualizer_state_t* state) {
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int frame_length = animation->frame_lengths[animation->current_frame];
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int current_pos = frame_length - animation->time_left_in_frame;
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uint8_t t_h = LCD_HUE(state->target_lcd_color);
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uint8_t t_s = LCD_SAT(state->target_lcd_color);
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uint8_t t_i = LCD_INT(state->target_lcd_color);
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uint8_t p_h = LCD_HUE(state->prev_lcd_color);
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uint8_t p_s = LCD_SAT(state->prev_lcd_color);
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uint8_t p_i = LCD_INT(state->prev_lcd_color);
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uint8_t d_h1 = t_h - p_h; //Modulo arithmetic since we want to wrap around
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int d_h2 = t_h - p_h;
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// Chose the shortest way around
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int d_h = abs(d_h2) < d_h1 ? d_h2 : d_h1;
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int d_s = t_s - p_s;
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int d_i = t_i - p_i;
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int hue = (d_h * current_pos) / frame_length;
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int sat = (d_s * current_pos) / frame_length;
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int intensity = (d_i * current_pos) / frame_length;
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//dprintf("%X -> %X = %X\n", p_h, t_h, hue);
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hue += p_h;
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sat += p_s;
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intensity += p_i;
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state->current_lcd_color = LCD_COLOR(hue, sat, intensity);
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lcd_backlight_color(
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LCD_HUE(state->current_lcd_color),
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LCD_SAT(state->current_lcd_color),
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LCD_INT(state->current_lcd_color));
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return true;
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}
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bool lcd_backlight_keyframe_set_color(keyframe_animation_t* animation, visualizer_state_t* state) {
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(void)animation;
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state->prev_lcd_color = state->target_lcd_color;
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state->current_lcd_color = state->target_lcd_color;
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lcd_backlight_color(
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LCD_HUE(state->current_lcd_color),
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LCD_SAT(state->current_lcd_color),
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LCD_INT(state->current_lcd_color));
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return false;
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}
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bool lcd_backlight_keyframe_disable(keyframe_animation_t* animation, visualizer_state_t* state) {
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(void)animation;
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(void)state;
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lcd_backlight_hal_color(0, 0, 0);
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return false;
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}
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bool lcd_backlight_keyframe_enable(keyframe_animation_t* animation, visualizer_state_t* state) {
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(void)animation;
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(void)state;
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lcd_backlight_color(LCD_HUE(state->current_lcd_color),
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LCD_SAT(state->current_lcd_color),
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LCD_INT(state->current_lcd_color));
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return false;
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}
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