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/*
* MIT License
*
* Copyright (c) 2022 Joey Castillo
*
* 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.
*/
#ifndef ASTRONOMY_FACE_H_
#define ASTRONOMY_FACE_H_
/*
* ASTRONOMY face
*
* The Astronomy watch face is among the most complex watch faces in the
* Movement collection. It allows you to calculate the locations of celestial
* bodies in the sky, as well as distance in astronomical units (or, in the
* case of the Moon, distance in kilometers).
*
* When you arrive at the Astronomy watch face, you’ll see its name (“Astro”)
* and an animation of two objects orbiting each other. You will also see “SO”
* (for Sol) flashing in the top left. The flashing letters indicate the
* currently selected celestial body. Short press Alarm to advance through
* the available celestial bodies:
*
* SO - Sol, the sun
* ME - Mercury
* VE - Venus
* LU - Luna, the Earth’s moon
* MA - Mars
* JU - Jupiter
* SA - Saturn
* UR - Uranus
* NE - Neptune
*
* Once you’ve selected the celestial body whose parameters you wish to
* calculate, long press the Alarm button and release it. The letter “C” will
* flash while the calculation is performed.
*
* When the calculation is complete, the screen will display the altitude
* (“aL”) of the celestial body. You can cycle through the available parameters
* with repeated short presses on the Alarm button:
*
* aL - Altitude (in degrees), the elevation over the horizon. If negative, it is below the horizon.
* aZ - Azimuth (in degrees), the cardinal direction relative to true north.
* rA - Right Ascension (in hours/minutes/seconds)
* dE - Declination (in degrees/minutes/seconds)
* di - Distance (the digits in the top right will display either aU for astronomical units, or K for kilometers)
*
* Long press on the Alarm button to select another celestial body.
*/
#include "movement.h"
#include "astrolib.h"
typedef enum {
ASTRONOMY_MODE_SELECTING_BODY = 0,
ASTRONOMY_MODE_CALCULATING,
ASTRONOMY_MODE_DISPLAYING_ALT,
ASTRONOMY_MODE_DISPLAYING_AZI,
ASTRONOMY_MODE_DISPLAYING_RA,
ASTRONOMY_MODE_DISPLAYING_DEC,
ASTRONOMY_MODE_DISPLAYING_DIST,
ASTRONOMY_MODE_NUM_MODES
} astronomy_mode_t;
typedef struct {
astronomy_mode_t mode;
uint8_t active_body_index;
uint8_t animation_state;
double latitude_radians; // this is the user location
double longitude_radians; // but in radians
astro_angle_hms_t right_ascension;
astro_angle_dms_t declination;
double altitude; // in decimal degrees
double azimuth; // in decimal degrees
double distance; // in AU
} astronomy_state_t;
void astronomy_face_setup(movement_settings_t *settings, uint8_t watch_face_index, void ** context_ptr);
void astronomy_face_activate(movement_settings_t *settings, void *context);
bool astronomy_face_loop(movement_event_t event, movement_settings_t *settings, void *context);
void astronomy_face_resign(movement_settings_t *settings, void *context);
#define astronomy_face ((const watch_face_t){ \
astronomy_face_setup, \
astronomy_face_activate, \
astronomy_face_loop, \
astronomy_face_resign, \
NULL, \
})
#endif // ASTRONOMY_FACE_H_
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