mirror of https://github.com/espruino/BangleApps
Create app.js
Ben Jabituya
GitHub
parent
738aef34ea
commit
a1bc97001a
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var background_colour = "#000000";
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var foregound_colour = "#ccff99";
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var position_colour = "#ff3329";
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var log_limit = 1000;
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var max_array_size = 50;
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var pause_tracker = false;
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var temp;
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var file;
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var d;
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var origin_lat;
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var origin_lon;
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var current_lat;
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var current_lon;
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var current_speed;
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var distance_from_origin = 0;
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var distane_travelled = 0;
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var log_size;
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var waypoints = [];
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var start_alt = 0;
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var current_alt = 0;
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var button_lock = false;
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var display_waypoints = [];
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var waypoint = {
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lat: "",
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lon: ""
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};
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var compass_heading = "---";
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function calcCrow(lat1, lon1, lat2, lon2) {
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var R = 6371e3;
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var dLat = toRad(lat2 - lat1);
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var dLon = toRad(lon2 - lon1);
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lat1 = toRad(lat1);
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lat2 = toRad(lat2);
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var a = Math.sin(dLat / 2) * Math.sin(dLat / 2) +
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Math.sin(dLon / 2) * Math.sin(dLon / 2) * Math.cos(lat1) * Math.cos(lat2);
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var c = 2 * Math.atan2(Math.sqrt(a), Math.sqrt(1 - a));
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var d = R * c;
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return d;
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}
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function toRad(Value) {
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return Value * Math.PI / 180;
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}
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function draw() {
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if (pause_tracker)
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g.setColor(background_colour);
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else
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g.setColor(foregound_colour);
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g.setFont("6x8", 2);
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g.setFontAlign(0, 1);
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g.drawString(distance_from_origin.toFixed(0), 40, 220, true);
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g.drawString(distane_travelled.toFixed(0), 200, 220, true);
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g.setFont("6x8", 1);
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g.drawString(start_alt.toFixed(0), 40, 120, true);
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g.drawString(current_alt.toFixed(0), 200, 120, true);
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if (button_lock) {
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g.setFont("6x8", 2);
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g.setFontAlign(0, 0);
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g.drawString("X", 120, 220, true);
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g.setFont("6x8", 1);
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}
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}
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function cull_array() {
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for (var i = 2; i <= waypoints.length; i += 2)
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waypoints.splice(i, 1);
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}
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function process_and_display() {
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g.setColor(background_colour);
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g.fillRect(10, 65, 230, 230);
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g.setColor(foregound_colour);
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if (waypoints.length > max_array_size)
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cull_array();
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rescale();
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if (display_waypoints.length > 0) {
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for (let x = 0; x < display_waypoints.length - 1; x++) {
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g.reset();
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g.setColor(foregound_colour);
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g.drawLine(display_waypoints[x].lon, display_waypoints[x].lat, display_waypoints[x + 1].lon, display_waypoints[x + 1].lat);
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}
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g.reset();
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g.setColor(position_colour);
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g.fillCircle(display_waypoints[display_waypoints.length - 1].lon, display_waypoints[display_waypoints.length - 1].lat, 3);
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}
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}
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function process_GPS() {
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if (waypoints.length > 0) {
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//check distance
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temp_distance = calcCrow(current_lat, current_lon, waypoints[waypoints.length - 1].lat, waypoints[waypoints.length - 1].lon);
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if (temp_distance > 5) {
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var temp = Object.create(waypoint);
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temp.lat = current_lat;
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temp.lon = current_lon;
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waypoints.push(temp);
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distane_travelled += temp_distance;
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distance_from_origin = calcCrow(current_lat, current_lon, waypoints[0].lat, waypoints[0].lon);
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process_and_display();
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if (log_size < log_limit) {
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var csv = [
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d,
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origin_lat - current_lat,
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current_lon - origin_lon,
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current_speed,
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current_alt
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];
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file.write(csv.join(",") + "\n");
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log_size += 1;
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}
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}
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}
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else {
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g.setColor(position_colour);
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g.fillCircle(120, 120, 3);
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}
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draw();
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}
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function rescale() {
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var max_val = 0;
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display_waypoints = [];
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for (let x = 0; x < waypoints.length; x++) {
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if (Math.abs(waypoints[x].lat) > max_val)
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max_val = Math.abs(waypoints[x].lat);
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if (Math.abs(waypoints[x].lon) > max_val)
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max_val = Math.abs(waypoints[x].lon);
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}
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scaler = 60 / max_val;
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for (let x = 0; x < waypoints.length; x++) {
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temp = Object.create(waypoint);
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temp.lat = 140 - Math.round(waypoints[x].lat * scaler);
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temp.lon = 120 - Math.round(waypoints[x].lon * scaler);
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display_waypoints.push(temp);
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}
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}
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Bangle.setCompassPower(1);
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Bangle.setGPSPower(1);
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g.clear();
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process_GPS();
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var poll_GPS = setInterval(process_GPS, 9000);
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setWatch(function () {
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if (!button_lock) {
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waypoints.splice(1);
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process_GPS();
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}
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}, BTN2, { repeat: true, edge: "falling" });
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setWatch(function () {
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if (!button_lock) {
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if (!pause_tracker) {
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Bangle.setCompassPower(0);
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Bangle.setGPSPower(0);
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pause_tracker = true;
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}
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else {
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Bangle.setCompassPower(1);
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Bangle.setGPSPower(1);
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pause_tracker = false;
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}
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}
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}, BTN3, { repeat: true, edge: "falling" });
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setWatch(function () {
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if (button_lock) {
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button_lock = false;
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g.setFontAlign(0, 0);
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g.drawString(" ", 120, 220, true);
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}
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else {
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button_lock = true;
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g.setFontAlign(0, 0);
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g.drawString("X", 120, 220, true);
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}
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}, BTN1, { repeat: true, edge: "falling" });
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Bangle.on('GPS', function (g) {
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if (g.fix) {
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if (waypoints.length == 0) {
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file = require("Storage").open("alpine_log.csv", "w");
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file.write("");
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file = require("Storage").open("alpine_log.csv", "a");
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Bangle.buzz();
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position_colour = 0xF81F;
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origin_lat = g.lat;
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origin_lon = g.lon;
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start_alt = g.alt;
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current_speed = g.speed;
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sat_count = g.satellites;
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var csv = [
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d,
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origin_lat,
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origin_lon,
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current_speed,
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current_alt
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];
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file.write(csv.join(",") + "\n");
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var temp = Object.create(waypoint);
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temp.lat = 0;
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temp.lon = 0;
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process_GPS();
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waypoints.push(temp);
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}
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else {
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current_lat = g.lat - origin_lat;
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current_lon = origin_lon - g.lon;
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current_speed = g.speed;
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sat_count = g.satellites;
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current_alt = g.alt;
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gps_time = g.time;
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}
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}
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});
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Bangle.on('mag', function (m) {
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if (isNaN(m.heading))
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compass_heading = "---";
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else
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compass_heading = 360 - Math.round(m.heading);
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current_colour = g.getColor();
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g.reset();
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g.setColor(background_colour);
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g.fillRect(140, 30, 190, 55);
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g.setColor(foregound_colour);
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g.setFont("6x8", 2);
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if(compass_heading<100)
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compass_heading = " " + compass_heading.toString();
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g.drawString(compass_heading, 150, 15, true);
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});
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