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Merge pull request #190 from Purple-Tentacle/master 

Moonphase, added GPS and more buttons
master
Gordon Williams 2020-04-02 20:37:18 +01:00 committed by GitHub
parent 668f7bb549 4792189adc
commit 282ff71577
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3 changed files with 310 additions and 252 deletions
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4
apps.json
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@ -15,8 +15,8 @@
{ "id": "moonphase",
"name": "Moonphase",
"icon": "app.png",
"version":"0.01",
"description": "Shows current moon phase. Currently only with fixed coordinates (northern hemisphere).",
"version":"0.02",
"description": "Shows current moon phase. Now with GPS function.",
"tags": "",
"allow_emulator":true,
"storage": [

1
apps/moonphase/ChangeLog
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@ -1 +1,2 @@
0.01: New App!
0.02: Added GPS to obtain coordinates, added buttons

131
apps/moonphase/app.js
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@ -1,6 +1,26 @@
//Icons from https://icons8.com
//Sun and Moon calculations from https://github.com/mourner/suncalc and https://gist.github.com/endel/dfe6bb2fbe679781948c
//varibales
const storage = require('Storage');
let coords;
var timer;
var fix;
var PI = Math.PI,
sin = Math.sin,
cos = Math.cos,
tan = Math.tan,
asin = Math.asin,
atan = Math.atan2,
acos = Math.acos,
rad = PI / 180,
dayMs = 1000 * 60 * 60 * 24,
J1970 = 2440588,
J2000 = 2451545;
var SunCalc = {};
//pictures
function getImg(i) {
var data = {
@ -25,26 +45,8 @@ function getImg(i) {
buffer : E.toArrayBuffer(atob(data[i]))
};
}
//coordinates (will get from GPS later on real device)
var lat = 52.96236,
lon = 7.62571;
var PI = Math.PI,
sin = Math.sin,
cos = Math.cos,
tan = Math.tan,
asin = Math.asin,
atan = Math.atan2,
acos = Math.acos,
rad = PI / 180;
// sun calculations are based on http://aa.quae.nl/en/reken/zonpositie.html formulas
// date/time constants and conversions
var dayMs = 1000 * 60 * 60 * 24,
J1970 = 2440588,
J2000 = 2451545;
function toJulian(date) { return date.valueOf() / dayMs - 0.5 + J1970; }
function fromJulian(j) { return new Date((j + 0.5 - J1970) * dayMs); }
function toDays(date) { return toJulian(date) - J2000; }
@ -76,17 +78,15 @@ function getImg(i) {
}
function sunCoords(d) {
var M = solarMeanAnomaly(d),
L = eclipticLongitude(M);
return {
dec: declination(L, 0),
ra: rightAscension(L, 0)
};
}
var SunCalc = {};
// adds a custom time to the times config
SunCalc.addTime = function (angle, riseName, setName) {
@ -131,7 +131,6 @@ function getImg(i) {
// calculations for illumination parameters of the moon,
// based on http://idlastro.gsfc.nasa.gov/ftp/pro/astro/mphase.pro formulas and
// Chapter 48 of "Astronomical Algorithms" 2nd edition by Jean Meeus (Willmann-Bell, Richmond) 1998.
SunCalc.getMoonIllumination = function (date) {
var year = date.getFullYear();
var month = date.getMonth();
@ -156,7 +155,6 @@ function getImg(i) {
jd -= b; // subtract integer part to leave fractional part of original jd
b = Math.round(jd * 8); // scale fraction from 0-8 and round
if (b >= 8) b = 0; // 0 and 8 are the same so turn 8 into 0
//print ({phase: b, name: Moon.phases[b]});
return {phase: b, name: Moon.phases[b]};
}
};
@ -168,7 +166,6 @@ function getImg(i) {
}
// calculations for moon rise/set times are based on http://www.stargazing.net/kepler/moonrise.html article
SunCalc.getMoonTimes = function (date, lat, lng, inUTC) {
var t = new Date(date);
if (inUTC) t.setUTCHours(0, 0, 0, 0);
@ -237,7 +234,7 @@ function getImg(i) {
}
function drawMoonPhase(offset, x, y){
if (lat >= 0 && lat <= 90){ //Northern hemisphere
if (coords.lat >= 0 && coords.lat <= 90){ //Northern hemisphere
if (getMPhaseSim(offset) == "new") {g.drawImage(getImg("NewMoon"), x, y);}
if (getMPhaseSim(offset) == "waxing-crescent") {g.drawImage(getImg("WaxingCrescentNorth"), x, y);}
if (getMPhaseSim(offset) == "first-quarter") {g.drawImage(getImg("FirstQuarterNorth"), x, y);}
@ -262,35 +259,95 @@ function getImg(i) {
function drawMoon(offset, x, y) {
g.setFont("6x8");
g.clear();
g.drawString("Key1: increase day, Key3:decrease day",10,10);
g.drawString(getMPhaseComp(offset),x,y-10);
drawMoonPhase(offset, x, y);
g.drawString("Key1: day+, Key2:today, Key3:day-",x,y-30);
g.drawString("Last known coordinates: " + coords.lat.toFixed(4) + " " + coords.lon.toFixed(4), x, y-20);
g.drawString("Press BTN4 to update",x, y-10);
g.drawString(getMPhaseComp(offset+2),x,y+40);
drawMoonPhase(offset+2, x, y+50);
g.drawString(getMPhaseComp(offset),x,y+30);
drawMoonPhase(offset, x+35, y+40);
g.drawString(getMPhaseComp(offset+4),x,y+90);
drawMoonPhase(offset+4, x, y+100);
g.drawString(getMPhaseComp(offset+2),x,y+70);
drawMoonPhase(offset+2, x+35, y+80);
g.drawString(getMPhaseComp(offset+6),x,y+140);
drawMoonPhase(offset+6, x, y+150);
g.drawString(getMPhaseComp(offset+4),x,y+110);
drawMoonPhase(offset+4, x+35, y+120);
g.drawString(getMPhaseComp(offset+6),x,y+150);
drawMoonPhase(offset+6, x+35, y+160);
}
//Write coordinates to file
function updateCoords() {
storage.write('coords.json', coords);
}
//set coordinates to default (city where I live)
function resetCoords() {
coords = {
lat : 52.96236,
lon : 7.62571,
};
updateCoords();
}
function getGpsFix() {
Bangle.on('GPS', function(fix) {
g.clear();
if (fix.fix == 1) {
var gpsString = "lat: " + fix.lat.toFixed(4) + " lon: " + fix.lon.toFixed(4);
coords.lat = fix.lat;
coords.lon = fix.lon;
updateCoords();
g.drawString("Got GPS fix and wrote coords to file",10,20);
g.drawString(gpsString,10,30);
g.drawString("Press BTN5 to return to app",10,40);
clearInterval(timer);
timer = undefined;
}
else {
g.drawString("Searching satellites...",10,20);
g.drawString("Press BTN5 to stop GPS",10, 30);
}
});
}
function start() {
var x = 10;
var y = 40;
var y = 50;
var offsetMoon = 0;
coords = storage.readJSON('coords.json',1); //read coordinates from file
if (!coords) resetCoords(); //if coordinates could not be read, reset them
drawMoon(offsetMoon, x, y); //offset, x, y
//define button functions
setWatch(function() {
setWatch(function() { //BTN1
offsetMoon++; //jump to next day
drawMoon(offsetMoon, x, y); //offset, x, y
}, BTN1, {edge:"rising", debounce:50, repeat:true});
setWatch(function() {
setWatch(function() { //BTN2
offsetMoon = 0; //jump to today
drawMoon(offsetMoon, x, y); //offset, x, y
}, BTN2, {edge:"rising", debounce:50, repeat:true});
setWatch(function() { //BTN3
offsetMoon--; //jump to next day
drawMoon(offsetMoon, x, y); //offset, x, y
}, BTN3, {edge:"rising", debounce:50, repeat:true});
setWatch(function() { //BTN4
g.drawString("--- Getting GPS signal ---",x, y);
Bangle.setGPSPower(1);
timer = setInterval(getGpsFix, 10000);
}, BTN4, {edge:"rising", debounce:50, repeat:true});
setWatch(function() { //BTN5
if (timer) clearInterval(timer);
timer = undefined;
Bangle.setGPSPower(0);
drawMoon(offsetMoon, x, y); //offset, x, y
}, BTN5, {edge:"rising", debounce:50, repeat:true});
}
start();