mirror of https://github.com/espruino/BangleApps
436 lines
9.7 KiB
JavaScript
436 lines
9.7 KiB
JavaScript
/*
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Speed and Altitude [speedalt]
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Ver : 1.06
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Mike Bennett mike[at]kereru.com
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process.memory()
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*/
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const dbg = 0;
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var buf = Graphics.createArrayBuffer(240,160,2,{msb:true});
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// Load fonts
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require("Font7x11Numeric7Seg").add(Graphics);
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var lf = {fix:0,satellites:0};
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var showMax = 0; // 1 = display the max values. 0 = display the cur fix
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var maxPress = 0; // Time max button pressed. Used to calculate short or long press.
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var canDraw = 1;
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var time = ''; // Last time string displayed. Re displayed in background colour to remove before drawing new time.
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var max = {};
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max.spd = 0;
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max.alt = 0;
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var emulator = 0;
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if (process.env.BOARD=="EMSCRIPTEN") emulator = 1; // 1 = running in emulator. Supplies test values;
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var wp = {}; // Waypoint to use for distance from cur position.
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function nxtWp(inc){
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if (settings.modeA) return;
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settings.wp+=inc;
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loadWp();
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}
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function loadWp() {
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var w = require("Storage").readJSON('waypoints.json')||[{name:"NONE"}];
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if (settings.wp>=w.length) settings.wp=0;
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if (settings.wp<0) settings.wp = w.length-1;
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savSettings();
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wp = w[settings.wp];
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}
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function radians(a) {
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return a*Math.PI/180;
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}
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function distance(a,b){
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var x = radians(a.lon-b.lon) * Math.cos(radians((a.lat+b.lat)/2));
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var y = radians(b.lat-a.lat);
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// Distance in selected units
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var d = Math.sqrt(x*x + y*y) * 6371000;
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d = (d/parseFloat(settings.dist)).toFixed(2);
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if ( d >= 100 ) d = parseFloat(d).toFixed(1);
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if ( d >= 1000 ) d = parseFloat(d).toFixed(0);
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return d;
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}
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function drawFix(speed,units,sats,alt,alt_units,age,fix) {
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if (!canDraw) return;
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buf.clear();
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var val = '';
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var u='';
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// Primary Display
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val = speed.toString();
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if ( !settings.primSpd ) val = alt.toString();
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// Primary Units
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u = settings.spd_unit;
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if ( !settings.primSpd ) u = alt_units;
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drawPrimary(val,u);
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// Secondary Display
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val = alt.toString();
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if ( !settings.primSpd ) val = speed.toString();
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// Secondary Units
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u = alt_units;
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if ( !settings.primSpd ) u = settings.spd_unit;
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drawSecondary(val,u);
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// Time
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drawTime();
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// Waypoint name
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drawWP();
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//Sats
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if ( fix ) drawSats('Sats:'+sats);
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else drawSats('Age:'+age);
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g.reset();
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g.drawImage(img,0,40);
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}
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function drawPrimary(n,u) {
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// Primary Display
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var s=40; // Font size
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if ( n.length <= 7 ) s=48;
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if ( n.length <= 6 ) s=55;
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if ( n.length <= 5 ) s=68;
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if ( n.length <= 4 ) s=85;
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if ( n.length <= 3 ) s=110;
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buf.setFontAlign(0,-1); //Centre
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buf.setColor(1);
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buf.setFontVector(s);
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buf.drawString(n,110,0);
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// Primary Units
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buf.setFontAlign(1,-1,3); //right
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buf.setColor(2);
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buf.setFontVector(25);
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buf.drawString(u,210,0);
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}
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function drawSecondary(n,u) {
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var s=180; // units X position
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if ( n.length <= 5 ) s=155;
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if ( n.length <= 4 ) s=125;
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if ( n.length <= 3 ) s=100;
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if ( n.length <= 2 ) s=65;
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if ( n.length <= 1 ) s=35;
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buf.setFontAlign(-1,1); //left, bottom
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buf.setColor(1);
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buf.setFontVector(45);
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buf.drawString(n,5,140);
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// Secondary Units
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buf.setFontAlign(-1,1); //left, bottom
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buf.setColor(2);
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buf.setFontVector(25);
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buf.drawString(u,s,135);
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}
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function drawTime() {
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var x = 0;
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var y = 160;
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buf.setFont("7x11Numeric7Seg", 2);
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buf.setFontAlign(-1,1); //left, bottom
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buf.setColor(0);
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buf.drawString(time,x,y);
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time = require("locale").time(new Date(),1);
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buf.setColor(3);
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buf.drawString(time,x,y);
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}
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function drawWP() {
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var nm = wp.name;
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if ( nm == undefined ) nm = '';
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if ( nm == 'NONE' ) nm = '';
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if ( settings.modeA ) nm='';
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buf.setFontAlign(-12,1); //left, bottom
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buf.setColor(2);
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// buf.setFont("6x8", 1);
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buf.setFontVector(20);
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buf.drawString(nm.substring(0,6),77,160);
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}
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function drawSats(sats) {
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buf.setColor(3);
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buf.setFont("6x8", 2);
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buf.setFontAlign(1,1); //right, bottom
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buf.drawString(sats,240,160);
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buf.setFontVector(20);
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buf.setColor(2);
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if ( settings.modeA ) buf.drawString("A",240,140);
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else buf.drawString("D",240,140);
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if ( showMax && settings.modeA ) {
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buf.setFontAlign(0,1); //centre, bottom
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buf.drawString("MAX",120,164);
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}
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}
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function onGPS(fix) {
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if ( emulator ) {
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fix.fix = 1;
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fix.speed = 10;
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fix.alt = 354;
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fix.lat = -38.92;
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fix.lon = 175.7613350;
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fix.course = 245;
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fix.satellites = 12;
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fix.time = new Date();
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}
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if (fix.fix) lf = fix;
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var m;
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speed = '---';
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alt = '---';
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dist = '---';
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age = '---';
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if (lf.fix == 1 ) {
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// Speed
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if ( settings.spd == 0 ) {
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m = require("locale").speed(lf.speed).match(/([0-9,\.]+)(.*)/); // regex splits numbers from units
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speed = m[1];
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settings.spd_unit = m[2];
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}
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else {
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// Calculate for selected units
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speed = lf.speed;
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speed = parseFloat(speed)/parseFloat(settings.spd);
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}
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if ( speed < 10 ) speed = speed.toFixed(1);
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else speed = Math.round(speed);
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if (parseFloat(speed) > parseFloat(max.spd) ) max.spd = parseFloat(speed);
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// Altitude
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alt = lf.alt;
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alt = Math.round(parseFloat(alt)/parseFloat(settings.alt));
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if (parseFloat(alt) > parseFloat(max.alt) ) max.alt = parseFloat(alt);
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// Distance to waypoint
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dist = distance(lf,wp);
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if (isNaN(dist)) dist = 0;
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// Age of last fix (secs)
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age = Math.max(0,Math.round(getTime())-(lf.time.getTime()/1000));
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if ( age > 90 ) age = '>90';
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}
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if ( settings.modeA ) {
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if ( showMax ) {
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// Speed and alt maximums
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drawFix(max.spd,settings.spd_unit,fix.satellites,max.alt,settings.alt_unit,age,fix.fix);
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}
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else {
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// Show speed/altitude
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drawFix(speed,settings.spd_unit,fix.satellites,alt,settings.alt_unit,age,fix.fix);
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}
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}
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else {
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// Show speed/distance
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if ( dist <= 0 ) {
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// No WP selected
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drawFix(speed,settings.spd_unit,fix.satellites,'','',age,fix.fix);
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}
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else {
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drawFix(speed,settings.spd_unit,fix.satellites,dist,settings.dist_unit,age,fix.fix);
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}
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}
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}
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function toggleDisplay() {
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settings.primSpd = !settings.primSpd;
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savSettings();
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onGPS(lf); // Update display
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}
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function toggleAltDist() {
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settings.modeA = !settings.modeA;
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savSettings();
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onGPS(lf);
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}
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function setButtons(){
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// Spd+Dist : Select next waypoint
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setWatch(btnPressed, BTN1,{repeat:true,edge:"rising"});
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setWatch(btnReleased, BTN1,{repeat:true,edge:"falling"});
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// Show launcher when middle button pressed
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setWatch(Bangle.showLauncher, BTN2, {repeat:false,edge:"falling"});
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// Toggle between alt or dist
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setWatch(toggleAltDist, BTN3, {repeat:true,edge:"falling"});
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// Touch left screen to toggle display
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setWatch(toggleDisplay, BTN4, {repeat:true,edge:"falling"});
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}
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function btnPressed() {
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maxPress = getTime();
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}
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function btnReleased() {
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var dur = getTime()-maxPress;
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if ( settings.modeA ) {
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// Spd+Alt mode - Switch between fix and MAX
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if ( dur < 2 ) {
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showMax = !showMax; // Short press toggle fix/max display
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}
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else {
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max.spd = 0; // Long press resets max values.
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max.alt = 0;
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}
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}
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else {
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// Spd+Dist mode - Select next waypoint
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nxtWp(1);
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}
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onGPS(lf);
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}
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function updateClock() {
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if ( dbg ) print('Updating clock');
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if (!canDraw) return;
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drawTime();
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g.reset();
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g.drawImage(img,0,40);
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// g.flip();
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if ( emulator ) {
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max.spd++;
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max.alt++;
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}
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}
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function startDraw(){
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canDraw=true;
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g.clear();
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Bangle.drawWidgets();
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onGPS(lf); // draw app screen
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}
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function stopDraw() {
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canDraw=false;
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}
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function savSettings() {
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require("Storage").write('speedalt.json',settings);
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}
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// =Main Prog
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// Read settings.
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let settings = require('Storage').readJSON('speedalt.json',1)||{};
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settings.spd = settings.spd||0; // Multiplier for speed unit conversions. 0 = use the locale values for speed
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settings.spd_unit = settings.spd_unit||''; // Displayed speed unit
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settings.alt = settings.alt||0.3048;// Multiplier for altitude unit conversions.
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settings.alt_unit = settings.alt_unit||'feet'; // Displayed altitude units
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settings.dist = settings.dist||1000;// Multiplier for distnce unit conversions.
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settings.dist_unit = settings.dist_unit||'km'; // Displayed altitude units
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settings.colour = settings.colour||0; // Colour scheme.
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settings.wp = settings.wp||0; // Last selected waypoint for dist
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settings.modeA = settings.modeA||0; // 0 = [D], 1 = [A]
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settings.primSpd = settings.primSpd||0; // 1 = Spd in primary, 0 = Spd in secondary
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loadWp();
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/*
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Colour Pallet Idx
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0 : Background (black)
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1 : Speed/Alt
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2 : Units
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3 : Sats
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*/
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var img = {
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width:buf.getWidth(),
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height:buf.getHeight(),
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bpp:2,
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buffer:buf.buffer,
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palette:new Uint16Array([0,0x4FE0,0xEFE0,0x07DB])
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};
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if ( settings.colour == 1 ) img.palette = new Uint16Array([0,0xFFFF,0xFFFF,0xFFFF]);
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if ( settings.colour == 2 ) img.palette = new Uint16Array([0,0xFF800,0xF800,0xF800]);
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// Find speed unit if using locale speed
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if ( settings.spd == 0 ) {
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var strSpeed = require("locale").speed(1);
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m = strSpeed.match(/([0-9,\.]+)(.*)/); // regex splits numbers from units
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settings.spd_unit = m[2];
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}
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var SCREENACCESS = {
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withApp:true,
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request:function(){
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this.withApp=false;
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stopDraw();
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clearWatch();
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},
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release:function(){
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this.withApp=true;
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startDraw();
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setButtons();
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}
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};
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Bangle.on('lcdPower',function(on) {
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if (!SCREENACCESS.withApp) return;
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if (on) {
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startDraw();
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} else {
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stopDraw();
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}
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});
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// All set up. Lets go.
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g.clear();
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Bangle.setLCDBrightness(1);
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Bangle.loadWidgets();
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Bangle.drawWidgets();
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Bangle.setGPSPower(1);
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onGPS(lf);
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Bangle.on('GPS', onGPS);
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setButtons();
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setInterval(updateClock, 30000);
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