185 lines
7.0 KiB
C
185 lines
7.0 KiB
C
/*
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* MIT License
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*
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* Copyright (c) 2022 Joey Castillo
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*
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* Based on Phase of Moon App for Tidbyt
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* https://github.com/tidbyt/community/blob/main/apps/phaseofmoon/phase_of_moon.star
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* Copyright (c) 2022 Alan Fleming
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*
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in all
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* copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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#include <stdlib.h>
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#include <string.h>
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#include <stdio.h>
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#include <math.h>
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#include "moon_phase_face.h"
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#include "watch_utility.h"
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#define LUNAR_DAYS 29.53058770576
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#define LUNAR_SECONDS (LUNAR_DAYS * (24 * 60 * 60))
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#define FIRST_MOON 947182440 // Saturday, 6 January 2000 18:14:00 in unix epoch time
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#define NUM_PHASES 8
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static const float phase_changes[] = {0, 1, 6.38264692644, 8.38264692644, 13.76529385288, 15.76529385288, 21.14794077932, 23.14794077932, 28.53058770576, 29.53058770576};
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void moon_phase_face_setup(movement_settings_t *settings, uint8_t watch_face_index, void ** context_ptr) {
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(void) settings;
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(void) watch_face_index;
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if (*context_ptr == NULL) {
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*context_ptr = malloc(sizeof(moon_phase_state_t));
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memset(*context_ptr, 0, sizeof(moon_phase_state_t));
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}
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}
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void moon_phase_face_activate(movement_settings_t *settings, void *context) {
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(void) settings;
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(void) context;
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}
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static void _update(movement_settings_t *settings, moon_phase_state_t *state, uint32_t offset) {
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(void)state;
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char buf[11];
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watch_date_time date_time = watch_rtc_get_date_time();
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uint32_t now = watch_utility_date_time_to_unix_time(date_time, movement_timezone_offsets[settings->bit.time_zone] * 60) + offset;
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date_time = watch_utility_date_time_from_unix_time(now, movement_timezone_offsets[settings->bit.time_zone] * 60);
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double currentfrac = fmod(now - FIRST_MOON, LUNAR_SECONDS) / LUNAR_SECONDS;
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double currentday = currentfrac * LUNAR_DAYS;
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uint8_t phase_index = 0;
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for(phase_index = 0; phase_index <= NUM_PHASES; phase_index++) {
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if (currentday > phase_changes[phase_index] && currentday <= phase_changes[phase_index + 1]) break;
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}
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watch_display_string(" ", 0);
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switch (phase_index) {
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case 0:
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case 8:
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sprintf(buf, "%2d Neu ", date_time.unit.day);
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break;
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case 1:
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sprintf(buf, "%2dCresnt", date_time.unit.day);
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watch_set_pixel(2, 13);
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watch_set_pixel(2, 15);
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if (currentfrac > 0.125) watch_set_pixel(1, 13);
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break;
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case 2:
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sprintf(buf, "%2d 1st q", date_time.unit.day);
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watch_set_pixel(2, 13);
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watch_set_pixel(2, 15);
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watch_set_pixel(1, 13);
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watch_set_pixel(1, 14);
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break;
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case 3:
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sprintf(buf, "%2d Gibb ", date_time.unit.day);
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watch_set_pixel(2, 13);
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watch_set_pixel(2, 15);
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watch_set_pixel(1, 14);
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watch_set_pixel(1, 13);
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watch_set_pixel(1, 15);
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break;
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case 4:
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sprintf(buf, "%2d FULL ", date_time.unit.day);
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watch_set_pixel(2, 13);
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watch_set_pixel(2, 15);
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watch_set_pixel(1, 14);
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watch_set_pixel(2, 14);
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watch_set_pixel(1, 15);
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watch_set_pixel(0, 14);
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watch_set_pixel(0, 13);
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watch_set_pixel(1, 13);
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break;
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case 5:
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sprintf(buf, "%2d Gibb ", date_time.unit.day);
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watch_set_pixel(1, 14);
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watch_set_pixel(2, 14);
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watch_set_pixel(1, 15);
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watch_set_pixel(0, 14);
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watch_set_pixel(0, 13);
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break;
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case 6:
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sprintf(buf, "%2d 3rd q", date_time.unit.day);
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watch_set_pixel(1, 14);
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watch_set_pixel(2, 14);
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watch_set_pixel(0, 14);
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watch_set_pixel(0, 13);
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break;
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case 7:
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sprintf(buf, "%2dCresnt", date_time.unit.day);
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watch_set_pixel(0, 14);
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watch_set_pixel(0, 13);
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if (currentfrac < 0.875) watch_set_pixel(2, 14);
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break;
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}
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watch_display_string(buf, 2);
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}
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bool moon_phase_face_loop(movement_event_t event, movement_settings_t *settings, void *context) {
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moon_phase_state_t *state = (moon_phase_state_t *)context;
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watch_date_time date_time;
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switch (event.event_type) {
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case EVENT_ACTIVATE:
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_update(settings, state, state->offset);
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break;
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case EVENT_TICK:
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// only update once an hour
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date_time = watch_rtc_get_date_time();
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if ((date_time.unit.minute == 0) && (date_time.unit.second == 0)) _update(settings, state, state->offset);
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break;
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case EVENT_LOW_ENERGY_UPDATE:
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// update at the top of the hour OR if we're entering sleep mode with an offset.
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// also, in sleep mode, always show the current moon phase (offset = 0).
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if (state->offset || (watch_rtc_get_date_time().unit.minute == 0)) _update(settings, state, 0);
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// and kill the offset so when the wearer wakes up, it matches what's on screen.
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state->offset = 0;
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// finally: clear out the last two digits and replace them with the sleep mode indicator
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watch_display_string(" ", 8);
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if (!watch_tick_animation_is_running()) watch_start_tick_animation(1000);
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break;
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case EVENT_MODE_BUTTON_UP:
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movement_move_to_next_face();
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break;
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case EVENT_LIGHT_BUTTON_DOWN:
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movement_illuminate_led();
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break;
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case EVENT_ALARM_BUTTON_UP:
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// Pressing the alarm adds an offset of one day to the displayed value,
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// so you can see moon phases in the future.
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state->offset += 86400;
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_update(settings, state, state->offset);
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break;
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case EVENT_TIMEOUT:
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// QUESTION: Should timeout reset offset to 0?
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break;
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default:
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break;
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}
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return true;
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}
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void moon_phase_face_resign(movement_settings_t *settings, void *context) {
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(void) settings;
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moon_phase_state_t *state = (moon_phase_state_t *)context;
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state->offset = 0;
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}
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