Implement Waypointer Moto

apps/wpmoto/README.md

@@ -1,176 +1,158 @@
-# Waypointer - navigate to waypoints
+# Waypointer Moto
 
-The app is aimed at navigation whilst walking. Please note that it
+Waypointer Moto is a GPS navigation aid intended to be attached to
-would be foolish in the extreme to rely on this as your only
+the handlebars of a motorcycle.
-navigation aid!
+It uses the GPS to find out which direction it's
+travelling and shows the direction and distance to the destination
+"as the crow flies". It gives you an indication of where to go,
+but exploring and navigating the environment is left up to the user.
 
-Please refer to the section on calibration of the compass.  This
+![](watch-on-bike.jpeg)
-should be done each time the app is going to be used.
 
-The main part of the display is a compass arrow that points in the
+(Please note that it would be foolish in the extreme to rely on this
-direction you need to walk in. Once you have selected a waypoint a
+as your only navigation aid! Make sure you read this entire document
-bearing from your current position (received from a GPS fix) is
+before using the app for navigation so that you know the drawbacks
-calculated and the compass is set to point in that direction.  If the
+and shortcomings.)
-arrow is pointing to the left, turning left should straighten the arrow
-up so that it is pointing straight ahead.
 
+## App usage
 
-![](waypointer_screenshot.jpg)
+### Main screen
 
-The large digits are the bearing from the current position. On the
+![](screenshot.png)
-left is the distance to the waypoint in local units. The top of the
-display is a circular compass which displays the direction you will
-need to travel in to reach the selected waypoint. The blue text is
-the name of the current waypoint. NONE means that there is no
-waypoint set and so bearing and distance will remain at 0. To select
-a waypoint, press BTN2 (middle) and wait for the blue text to turn
-white. Then use BTN1 and BTN3 to select a waypoint. The waypoint
-choice is fixed by pressing BTN2 again. In the screen shot below a
-waypoint giving the location of Stone Henge has been selected.
 
-The screenshot above shows that Stone Henge is 259.9 miles from the
+The main screen shows the direction arrow, the distance to the waypoint,
-current location. To travel towards Stone Henge I need to turn
+and the name of the selected waypoint.
-slightly left until the arrow is pointing straight ahead. As you
-continue to walk in the pointed direction you should see the distance
-to the waypoint reduce.  The frequency of updates will depend on
-which settings you have used in the GPS.
 
-At the top of the screen you can see two widgets.  These are the [GPS
+It also shows the status of the GPS fix in the colour of the arrow:
-Power
-Widget](https://github.com/espruino/BangleApps/tree/master/apps/widgps)
-and the [Compass Power Indicator Widget]. These can be installed
-seperately and provide you a indication of when the GPS and Compass
-are switched on and drawing power.
 
+ * Red: no GPS fix at all
+ * Yellow: GPS location, but no GPS course (probably you're moving too slowly);
+   in this case the direction of travel comes from the compass bearing instead
+   of the GPS course, but note that the compass is unreliable
+ * White: GPS fix includes both location and course, and the GPS course is used
+   to determine the direction of travel
 
-## Marking Waypoints
+### Select a waypoint
 
-The app lets you mark your current location as follows. There are
+![](screenshot-menu.png)
-vacant slots in the waypoint file which can be allocated a
-location. In the distributed waypoint file these are labelled WP0 to
-WP4. Select one of these - WP2 is shown below.
 
-![](wp2_screenshot.jpg)
+Press the middle button (`BTN2`) to enter the menu, choose a waypoint using
+the up/down arrows, and use the middle button again to select a waypoint and
+return to the main screen.
 
-Bearing and distance are both zero as WP2 has currently no GPS
+### Add a waypoint
-location associated with it. To mark the location, press BTN2.
 
-![](wp2_saved.jpg)
+Press the middle button (`BTN2`) to enter the menu, and select the "+ Here"
+option. This will add a waypoint named "WP*n*" marking your current location,
+where "*n*" is the next unused number.
 
-The app indicates that WP2 is now marked by adding the prefix @ to
+### Delete a waypoint
-it's name. The distance should be small as shown in the screen shot
-as you have just marked your current location.
 
-## Waypoint JSON file
+![](screenshot-delete.png)
 
-When the app is loaded from the app loader, a file named
+Select a waypoint using the menu. Once the waypoint is selected and you're
-`waypoints.json` is loaded along with the javascript etc. The file
+back on the main screen, press either the top or bottom button (`BTN1` or
-has the following contents:
+`BTN3`). Confirm that you want to delete the waypoint with the middle
+button (`BTN2`).
 
+## Waypoint editor
 
-```
+With the Bangle.js app loader connected to the watch, find the
-[
+Waypointer Moto app and click on the floppy disk icon:
-  {
-  "name":"NONE"
-  },
-  {
-  "name":"No10",
-  "lat":51.5032,
-  "lon":-0.1269
-  },
-  {
-  "name":"Stone",
-  "lat":51.1788,
-  "lon":-1.8260
-  },
-  { "name":"WP0" },
-  { "name":"WP1" },
-  { "name":"WP2" },
-  { "name":"WP3" },
-  { "name":"WP4" }
-]
-```
 
-The file contains the initial NONE waypoint which is useful if you
+![](floppy-disk.png)
-just want to display course and speed. The next two entries are
-waypoints to No 10 Downing Street and to Stone Henge - obtained from
-Google Maps. The last five entries are entries which can be *marked*.
 
-You add and delete entries using the Web IDE to load and then save
+This will load up the waypoint editor:
-the file from and to watch storage. The app itself does not limit the
-number of entries although it does load the entire file into RAM
-which will obviously limit this.
 
+![](editor.png)
 
-## Waypoint Editor
+### Add a waypoint
 
-Clicking on the download icon of gpsnav in the app loader invokes the
+Use the map to find your destination. Clicking on the map will
-waypoint editor.  The editor downloads and displays the current
+populate the latitude/longitude input boxes with the coordinates
-`waypoints.json` file. Clicking the `Edit` button beside an entry
+of the point you clicked on. Type in a name for the waypoint and
-causes the entry to be deleted from the list and displayed in the
+click "Add Waypoint". Click "Upload" to send the updated list of
-edit boxes. It can be restored - by clicking the `Add waypoint`
+waypoints to the watch.
-button. A new markable entry is created by using the `Add name`
-button. The edited `waypoints.json` file is uploaded to the Bangle by
-clicking the `Upload` button.
 
+### Edit a waypoint
 
-## Calibration of the Compass
+Click on the pencil icon next to the waypoint you wish to edit.
+This will remove the waypoint from the list and populate the
+input boxes.
+Edit the coordinates by hand, or by clicking on the map. Edit
+the name if you want. Click "Add Waypoint" to save the waypoint
+back to the list. Click "Upload" to send the updated list of
+waypoints to the watch.
 
-The Compass should be calibrated before using the App to navigate to
+### Delete a waypoint
-a waypoint (or a series of waypoints).  To do this use either the
-Arrow Compass or the [Navigation
-Compass](https://github.com/espruino/BangleApps/tree/master/apps/magnav).
-Open the compass app and clicking on BTN3.  The calibration process
-takes 30 seconds during which you should move the watch slowly
-through figures of 8. It is important that during calibration the
-watch is fully rotated around each of it axes. If the app does give
-the correct direction heading or is not stable with respect to tilt
-and roll - redo the calibration by pressing *BTN3*. Calibration data
-is recorded in a storage file named `magnav.json`.
 
+Click on the pencil icon next to the waypoint you wish to edit.
+This will remove the waypoint from the list.
+Click "Upload" to send the updated list of waypoints to the watch.
 
-## Advantages and Disadvantages
+## Mounting the watch on the bike
 
-This approach has some advantages and disadvantages.  First following
+There is a 3d-printable "artificial wrist" which will fit over a 7/8"
-the arrow is fairly easy to do and once the bearing has been
+handlebar and allow the watch strap to tighten up.
-established it does not matter if there is not another GPS fix for a
+Alternatively, in a pinch you can strap the watch around a glove or a sponge
-while as the compass will continue to point in the general direction.
+or anything else that will pad out the space so that the watch is a tight
-Second the GPS will only supply a course to the waypoint (a bearing)
+fit.
-once you are travelling above 8m/s or 28kph.  This is not a practical
-walking speed. 5kmph is considered a marching pace.
 
-One disadvantage is that the compass is not very accurate.  I have
+The 3d-printed part should be a snug fit on the handlebar so that it does
-observed it being 20-30 degrees off when compared to a hiking
+not flop around. If it is too loose, line it with a layer or 2 of tape.
-compass.  Sometime its is necessary to walk in the opposite direction
-for a bit to establish the correct direction to go in.  The accuracy
-of the compass is impacted by the magnetic clamps on the charging
-cable, so it is particularly important that you recalibtrate the
-compass after the watch has been charged.  That said I have found I
-am successfully able to follow a chain of waypoints as a route.
 
+[Download the handlebar mount STL »](handlebar-mount.stl)
+
+[Download the handlebar mount FreeCAD source »](handlebar-mount.FCStd)
+
+![](handlebar-mount.png)
+
+![](handlebar-mount.jpeg)
+
+## Comparison to Way Pointer
+
+Compared to the original Way Pointer app, Waypointer Moto:
+
+ * removes the numerical display of compass bearing
+ * makes the distance text bigger
+ * uses a higher-resolution arrow icon
+ * has a visual indication of the GPS status (the arrow colour)
+ * uses GPS course instead of compass bearing
+ * has OpenStreetMap integration in the waypoint editor
+ * uses Bangle.js menus to select waypoints instead of custom UI
+ * can add new waypoints from inside the app without requiring a blank slot
+ * can delete waypoints from inside the app without needing the PC
+ * still uses the same `waypoints.json` file
+
+## Gotchas
+
+Waypointer Moto derives your current heading from the GPS course
+rather than the compass, whenever GPS course is available.
+The compass bearing is based on the angle the watch is held, but
+the GPS course is based on the direction it's *travelling*. If the
+watch is not aligned with the direction of travel of the vehicle
+then the arrow will not point in the correct direction.
+
+When travelling too slowly, there is no GPS course information, so the
+app reverts to using the compass (and draws it in yellow), but
+the compass is not very reliable, and I
+have especially found it not to be reliable when placed on a motorcyle,
+maybe because of all the metal in the immediate vicinity. So if
+the arrow is not drawn in white, then you should probably not trust
+it. If you're not sure, just ride in a straight line until the arrow
+turns white again.
 
 ## Possible Future Enhancements
 
-- Buzz when the GPS establishes its first fix.
+ - "routes" with multiple waypoints; automatically step from one
-
+   waypoint to the next when you get near to it
-- Add a small LED to show the status of the GPS during the phase of
+ - some way to manually input coordinates directly on the watch
-  establishing a first fix.
+ - make the text & arrow more legible in direct sunlight
-
+ - integrate a charging connector into the handlebar mount
-- Add an option to calibrate the Compass without having to use the
+ - upstream the map integration to the other waypoint apps
-  Arrow Compass or the Navigation Compass.
-
-- Investigate the accuracy of the Compass and how it changes
-  throughout the day after the watch battery has been fully charged.
-
-- Investigate the possibility of setting the GPS in low speed mode so
-  that a current course value can be obtained.
-
-- Buzz when you arrive within 20m of a waypoint to signify arrival
-
 
 ## Acknowledgements
 
-The majority of the code in this application is a merge of
+Waypointer Moto is a project by [James Stanley](https://incoherency.co.uk/). It is a derivative of [Adam Schmalhofer's](https://github.com/adamschmalhofer) Way Pointer app, which is in turn a derivative of
 [jeffmer's](https://github.com/jeffmer/JeffsBangleAppsDev) GPS
-Navigation and Compass Navigation Applications.
+Navigation and Compass Navigation apps.
-

apps/wpmoto/app.js

@@ -1,71 +1,106 @@
-var pal_by = new Uint16Array([0x0000,0xFFC0],0,1); // black, yellow
-var pal_bw = new Uint16Array([0x0000,0xffff],0,1);  // black, white
-var pal_bb = new Uint16Array([0x0000,0x07ff],0,1); // black, blue
-
-// having 3 2 color pallette keeps the memory requirement lower
-var buf1 = Graphics.createArrayBuffer(160,160,1, {msb:true});
-var buf2 = Graphics.createArrayBuffer(80,40,1, {msb:true});
-var arrow_img = require("heatshrink").decompress(atob("lEowIPMjAEDngEDvwED/4DCgP/wAEBgf/4AEBg//8AEBh//+AEBj///AEBn///gEBv///wmCAAImCAAIoBFggE/AkaaEABo="));
-
-function flip1(x,y) {
-  g.drawImage({width:160,height:160,bpp:1,buffer:buf1.buffer, palette:pal_by},x,y);
-  buf1.clear();
-}
-
-function flip2_bw(x,y) {
-  g.drawImage({width:80,height:40,bpp:1,buffer:buf2.buffer, palette:pal_bw},x,y);
-  buf2.clear();
-}
-
-function flip2_bb(x,y) {
-  g.drawImage({width:80,height:40,bpp:1,buffer:buf2.buffer, palette:pal_bb},x,y);
-  buf2.clear();
-}
-
-var candraw = true;
-var wp_bearing = 0;
-var direction = 0;
-var wpindex=0;
 var loc = require("locale");
-var selected = false;
+
+var waypoints = require("Storage").readJSON("waypoints.json")||[{name:"NONE"}];
+var wp = waypoints[0];
+var wp_bearing = 0;
+var candraw = true;
+
+var direction = 0;
+var dist = 0;
+
+var savedfix;
 
 var previous = {
-  bs: '',
   dst: '',
   wp_name: '',
-  course: 0,
+  course: 180,
   selected: false,
 };
 
-// clear the attributes that control the display refresh
+/*** Drawing ***/
-function clear_previous() {
+
-  previous.bs = '-';
+var pal_by = new Uint16Array([0x0000,0xFFC0],0,1); // black, yellow
-  previous.dst = '-';
+var pal_bw = new Uint16Array([0x0000,0xffff],0,1);  // black, white
-  previous.wp_name = '-';
+var pal_bb = new Uint16Array([0x0000,0x07ff],0,1); // black, blue
-  previous.course = -999;
+var pal_br = new Uint16Array([0x0000,0xf800],0,1); // black, red
+var pal_compass = pal_by;
+
+var buf = Graphics.createArrayBuffer(160,160,1, {msb:true});
+var arrow_img = require("heatshrink").decompress(atob("vF4wJC/AEMYBxs8Bxt+Bxv/BpkB/+ABxcD//ABxcH//gBxcP//wBxcf//4Bxc///8Bxd///+OxgABOxgABPBR2BAAJ4KOwIABPBR2BAAJ4KOwIABPBR2BAAJ4KOwIABPBQNCPBR2DPBR2DPBR2DPBR2DPBR2DPBR2DPBR2DPBQNEPBB2FPBB2FPBB2FPBB2FPBB2FPBB2FPBB2FPBANGPAx2HPAx2HPAx2HPAx2HPAx2HPAx2HeJTeJB34O/B34O/B34O/B34O/B34O/B34O/B34O/B34OTAH4AT"));
+
+function flip1(x,y,palette) {
+  g.drawImage({width:160,height:160,bpp:1,buffer:buf.buffer, palette:palette},x,y);
+  buf.clear();
+}
+
+function flip2_bw(x,y) {
+  g.drawImage({width:160,height:40,bpp:1,buffer:buf.buffer, palette:pal_bw},x,y);
+  buf.clear();
+}
+
+function flip2_bb(x,y) {
+  g.drawImage({width:160,height:40,bpp:1,buffer:buf.buffer, palette:pal_bb},x,y);
+  buf.clear();
 }
 
 function drawCompass(course) {
-  if(!candraw) return;
+  if (!candraw) return;
-  if (Math.abs(previous.course - course) < 9) return; // reduce number of draws due to compass jitter
+
   previous.course = course;
-  
+
-  buf1.setColor(1);
+  buf.setColor(1);
-  buf1.fillCircle(80,80,79,79);
+  buf.fillCircle(80,80, 79);
-  buf1.setColor(0);
+  buf.setColor(0);
-  buf1.fillCircle(80,80,69,69);
+  buf.fillCircle(80,80, 69);
-  buf1.setColor(1);
+  buf.setColor(1);
-  buf1.drawImage(arrow_img, 80, 80, {scale:3,  rotate:radians(course)} );
+  buf.drawImage(arrow_img, 80, 80, {rotate:radians(course)} );
-  flip1(40, 30);
+  var palette = pal_br;
+  if (savedfix !== undefined && savedfix.fix !== 0) palette = pal_compass;
+  flip1(40, 30, palette);
 }
 
-/***** COMPASS CODE ***********/
+function drawN(force){
+  if (!candraw) return;
+
+  buf.setFont("Vector",24);
+  var dst = loc.distance(dist);
+
+  // distance on left
+  if (force || previous.dst !== dst) {
+    previous.dst = dst;
+    buf.setColor(1);
+    buf.setFontAlign(-1, -1);
+    buf.setFont("Vector",40);
+    buf.drawString(dst,0,0);
+    flip2_bw(8, 200);
+  }
+
+  // waypoint name on right
+  if (force || previous.wp_name !== wp.name) {
+    previous.wp_name = wp.name;
+    buf.setColor(1);
+    buf.setFontAlign(1, -1);
+    buf.setFont("Vector", 15);
+    buf.drawString(wp.name, 80, 0);
+    flip2_bw(160, 220);
+  }
+}
+
+function drawAll(force) {
+  if (!candraw) return;
+
+  g.setColor(1,1,1);
+  drawN(force);
+  drawCompass(direction);
+}
+
+/*** Heading ***/
 
 var heading = 0;
-function newHeading(m,h){ 
+function newHeading(m,h){
     var s = Math.abs(m - h);
     var delta = (m>h)?1:-1;
-    if (s>=180){s=360-s; delta = -delta;} 
+    if (s>=180){s=360-s; delta = -delta;}
     if (s<2) return h;
     var hd = h + delta*(1 + Math.round(s/5));
     if (hd<0) hd+=360;
@@ -93,10 +128,18 @@ function tiltfixread(O,S){
   return psi;
 }
 
-// Note actual mag is 360-m, error in firmware
+function read_heading() {
-function read_compass() {
+  if (savedfix !== undefined && !isNaN(savedfix.course)) {
-  var d = tiltfixread(CALIBDATA.offset,CALIBDATA.scale);
+    Bangle.setCompassPower(0);
-  heading = newHeading(d,heading);
+    heading = savedfix.course;
+    pal_compass = pal_bw;
+  } else {
+    var d = tiltfixread(CALIBDATA.offset,CALIBDATA.scale);
+    Bangle.setCompassPower(1);
+    heading = newHeading(d,heading);
+    pal_compass = pal_by;
+  }
+
   direction = wp_bearing - heading;
   if (direction < 0) direction += 360;
   if (direction > 360) direction -= 360;
@@ -104,12 +147,7 @@ function read_compass() {
 }
 
 
-/***** END Compass ***********/
+/*** Maths ***/
-
-var speed = 0;
-var satellites = 0;
-var wp;
-var dist=0;
 
 function radians(a) {
   return a*Math.PI/180;
@@ -125,8 +163,7 @@ function bearing(a,b){
   var alat = radians(a.lat);
   var blat = radians(b.lat);
   var y = Math.sin(delta) * Math.cos(blat);
-  var x = Math.cos(alat)*Math.sin(blat) -
+  var x = Math.cos(alat)*Math.sin(blat) -         Math.sin(alat)*Math.cos(blat)*Math.cos(delta);
-        Math.sin(alat)*Math.cos(blat)*Math.cos(delta);
   return Math.round(degrees(Math.atan2(y, x)));
 }
 
@@ -136,133 +173,106 @@ function distance(a,b){
   return Math.round(Math.sqrt(x*x + y*y) * 6371000);
 }
 
+/*** Waypoints ***/
 
-function drawN(){
+function addCurrentWaypoint() {
-  buf2.setFont("Vector",24);
+  var wpnum = 0;
-  var bs = wp_bearing.toString();
+  var ok = false;
-  bs = wp_bearing<10?"00"+bs : wp_bearing<100 ?"0"+bs : bs;
+  // XXX: O(n^2) search for lowest unused WP number
-  var dst = loc.distance(dist);
+  while (!ok) {
-  
+    ok = true;
-  // -1=left (default), 0=center, 1=right
+    for (var i = 0; i < waypoints.length && ok; i++) {
-  
+      if (waypoints[i].name == ("WP"+wpnum)) {
-  // show distance on the left
+        wpnum++;
-  if (previous.dst !== dst) {
+        ok = false;
-    previous.dst = dst
+      }
-    buf2.setColor(1);
+    }
-    buf2.setFontAlign(-1,-1);
-    buf2.setFont("Vector", 20);
-    buf2.drawString(dst,0,0);
-    flip2_bw(0, 200);
-  }
-  
-  // bearing, place in middle at bottom of compass
-  if (previous.bs !== bs) {
-    previous.bs = bs;
-    buf2.setColor(1);
-    buf2.setFontAlign(0, -1);
-    buf2.setFont("Vector",38);
-    buf2.drawString(bs,40,0);
-    flip2_bw(80, 200);
   }
 
-  // waypoint name on right
+  waypoints.push({
-  if (previous.wp_name !== wp.name || previous.selected !== selected) {
+    name: "WP" + wpnum,
-    previous.selected = selected;
+    lat: savedfix.lat,
-    buf2.setColor(1);
+    lon: savedfix.lon,
-    buf2.setFontAlign(1,-1);     // right, bottom
+  });
-    buf2.setFont("Vector", 20);
+  wp = waypoints[waypoints.length-1];
-    buf2.drawString(wp.name, 80, 0);
+  saveWaypoints();
-
-    if (selected)
-      flip2_bw(160, 200);
-    else
-      flip2_bb(160, 200);
-  }
 }
 
-var savedfix;
+function saveWaypoints() {
+  require("Storage").writeJSON("waypoints.json", waypoints);
+}
 
-function onGPS(fix) {
+function deleteWaypoint(w) {
-  savedfix = fix;
+  for (var i = 0; i < waypoints.length; i++) {
-  if (fix!==undefined){
+    if (waypoints[i] == w) {
-    satellites = fix.satellites;
+      waypoints.splice(i, 1);
-  }
+      saveWaypoints();
-  
+      wp = {name:"NONE"};
-  if (candraw) {
-    if (fix!==undefined && fix.fix==1){
-      dist = distance(fix,wp);
-      if (isNaN(dist)) dist = 0;
-      wp_bearing = bearing(fix,wp);
-      if (isNaN(wp_bearing)) wp_bearing = 0;
-      drawN();
     }
   }
 }
 
-var intervalRef;
+/*** Setup ***/
 
-function stopdraw() {
+function onGPS(fix) {
-  candraw=false;
+  savedfix = fix;
-  prev_course = -1;
+
-  if(intervalRef) {clearInterval(intervalRef);}
+  if (fix !== undefined && fix.fix == 1){
+    dist = distance(fix, wp);
+    if (isNaN(dist)) dist = 0;
+    wp_bearing = bearing(fix, wp);
+    if (isNaN(wp_bearing)) wp_bearing = 0;
+    drawN();
+  }
 }
 
 function startTimers() {
-  candraw=true;
+  setInterval(function() {
-  intervalRefSec = setInterval(function() {
+    Bangle.setLCDPower(1);
-    read_compass();
+    read_heading();
   }, 500);
 }
 
-function drawAll(){
+function addWaypointToMenu(menu, i) {
-  g.setColor(1,1,1);
+  menu[waypoints[i].name] = function() {
-  drawN();
+    wp = waypoints[i];
-  drawCompass(direction);
+    mainScreen();
+  };
 }
 
-function startdraw(){
+function mainScreen() {
-  g.clear();
+  E.showMenu();
-  Bangle.drawWidgets();
+  candraw = true;
-  startTimers();
+  drawAll(true);
-  candraw=true;
-  drawAll();
-}
 
-function setButtons(){
+  Bangle.setUI("updown", function(v) {
-  setWatch(nextwp.bind(null,-1), BTN1, {repeat:true,edge:"falling"});
+    if (v === undefined) {
-  setWatch(doselect, BTN2, {repeat:true,edge:"falling"});
+      candraw = false;
-  setWatch(nextwp.bind(null,1), BTN3, {repeat:true,edge:"falling"});
+      var menu = {
-}
+        "": { "title": "-- Waypoints --" },
- 
+      };
-Bangle.on('lcdPower',function(on) {
+      for (let i = 0; i < waypoints.length; i++) {
-  if (on) {
+        addWaypointToMenu(menu, i);
-    clear_previous();
+      }
-    startdraw();
+      menu["+ Here"] = function() {
-  } else {
+        addCurrentWaypoint();
-    stopdraw();
+        mainScreen();
-  }
+      };
-});
+      menu["< Back"] = mainScreen;
-
+      E.showMenu(menu);
-var waypoints = require("Storage").readJSON("waypoints.json")||[{name:"NONE"}];
+    } else {
-wp=waypoints[0];
+      candraw = false;
-
+      E.showPrompt("Delete waypoint: " + wp.name + "?").then(function(confirmed) {
-function nextwp(inc){
+        var name = wp.name;
-  if (!selected) return;
+        if (confirmed) {
-  wpindex+=inc;
+          deleteWaypoint(wp);
-  if (wpindex>=waypoints.length) wpindex=0;
+          E.showAlert("Waypoint deleted: " + name).then(mainScreen);
-  if (wpindex<0) wpindex = waypoints.length-1;
+        } else {
-  wp = waypoints[wpindex];
+          mainScreen();
-  drawN();
+        }
-}
+      });
-
+    }
-function doselect(){
+  });
-  if (selected && wpindex!=0 && waypoints[wpindex].lat===undefined && savedfix.fix) {
-     waypoints[wpindex] ={name:"@"+wp.name, lat:savedfix.lat, lon:savedfix.lon};
-     wp = waypoints[wpindex];
-     require("Storage").writeJSON("waypoints.json", waypoints);
-  }
-  selected=!selected;
-  drawN();
 }
 
 Bangle.on('kill',()=>{
@@ -272,12 +282,7 @@ Bangle.on('kill',()=>{
 
 g.clear();
 Bangle.setLCDBrightness(1);
-Bangle.loadWidgets();
-Bangle.drawWidgets();
-// load widgets can turn off GPS
 Bangle.setGPSPower(1);
-Bangle.setCompassPower(1);
-drawAll();
 startTimers();
 Bangle.on('GPS', onGPS);
-setButtons();
+mainScreen();

apps/wpmoto/icon.js

@@ -1 +1 @@
-require("heatshrink").decompress(atob("mEwwhC/AFcBiAWViMRDCkBiUhC68RC64AFGxsRC4UiAAY2HOAQAEC4MSn//AAXzGAwWGC4czC4f/mIwEFwIlEBoIXDBQnyGAkRiYWE/8yLAIXBGAhgEFw5WBC4R0BkYaBmRfFF44XCNI6OGGAQlBAAIXIX4yPJaBq/JC5oeHC/4X/C/4X/C/4X/C/4X/C88RiIXUDAIWVAH4AVA="))
+require("heatshrink").decompress(atob("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"))

apps/wpmoto/metadata.json

@@ -0,0 +1,18 @@
+{
+  "id": "wpmoto",
+  "name": "Waypointer Moto",
+  "shortName": "Waypointer Moto",
+  "version": "0.01",
+  "description": "Waypoint-based motorcycle navigation aid",
+  "icon": "wpmoto.png",
+  "tags": "tool,outdoors,gps",
+  "supports": ["BANGLEJS"],
+  "screenshots": [{"url":"screenshot.png"},{"url":"screenshot-menu.png"},{"url":"screenshot-delete.png"}],
+  "readme": "README.md",
+  "interface": "wpmoto.html",
+  "storage": [
+    {"name":"wpmoto.app.js","url":"app.js"},
+    {"name":"wpmoto.img","url":"icon.js","evaluate":true}
+  ],
+  "data": [{"name":"waypoints.json","url":"waypoints.json"}]
+}

apps/wpmoto/waypoints.json

@@ -2,19 +2,4 @@
   {
   "name":"NONE"
   },
-  {
+]
-  "name":"No10",
-  "lat":51.5032,
-  "lon":-0.1269
-  },
-  {
-  "name":"Stone",
-  "lat":51.1788,
-  "lon":-1.8260
-  },
-  { "name":"WP0" },
-  { "name":"WP1" },
-  { "name":"WP2" },
-  { "name":"WP3" },
-  { "name":"WP4" }
-]

apps/wpmoto/wpmoto.html

@@ -2,6 +2,8 @@
   <head>
     <link rel="stylesheet" href="../../css/spectre.min.css">
     <link rel="stylesheet" href="../../css/spectre-icons.min.css">
+    <link rel="stylesheet" href="https://cdn.jsdelivr.net/gh/openlayers/openlayers.github.io@master/en/v6.12.0/css/ol.css" type="text/css">
+    <link href="https://cdn.jsdelivr.net/npm/ol-geocoder@latest/dist/ol-geocoder.min.css" rel="stylesheet">
   </head>
   <body>
 
@@ -30,13 +32,10 @@
           <input class="form-input input-sm" value="0.0000" type="number" step="any" id="add_latitude" placeholder="Lat">
         </div>
         <div class="column col-3 col-xs-8">
-          <input class="form-input input-sm" value="0.0000" type="number" step="any" id="add_longtitude" placeholder="Long">
+          <input class="form-input input-sm" value="0.0000" type="number" step="any" id="add_longitude" placeholder="Long">
         </div>
       </div>
       <div class="columns">
-        <div class="column col-3 col-xs-8">
-          <button id="add_name_button" class="btn btn-primary btn-sm">Add Name Only</button>
-        </div>
         <div class="column col-3 col-xs-8">
           <button id="add_waypoint_button" class="btn btn-primary btn-sm">Add Waypoint</button>
         </div>
@@ -44,21 +43,60 @@
     </form>
     <br>
     <button id="Download" class="btn btn-error">Reload</button> <button id="Upload" class="btn btn-primary">Upload</button>
+    <br>
+    <div id="map" class="map" style="width:100%; height:400px"></div>
     
+    <script src="https://cdn.jsdelivr.net/gh/openlayers/openlayers.github.io@master/en/v6.12.0/build/ol.js"></script>
+    <script src="https://cdn.jsdelivr.net/npm/ol-geocoder"></script>
     <script src="../../core/lib/interface.js"></script>
 
     <script>
+      var map = new ol.Map({
+        target: 'map',
+        layers: [
+          new ol.layer.Tile({
+            source: new ol.source.OSM()
+          })
+        ],
+        view: new ol.View({
+          center: ol.proj.fromLonLat([37.41, 8.82]),
+          zoom: 4
+        })
+      });
+
+      var geocoder = new Geocoder('nominatim', {
+        provider: 'osm',
+        lang: 'en-GB',
+        placeholder: 'Search...',
+        targetType: 'text-input',
+      });
+      map.addControl(geocoder);
+      geocoder.on('addresschosen', function(e) {
+        map.getView().animate({
+            center: e.coordinate,
+            zoom: Math.max(map.getView().getZoom(),16)
+        });
+
+        var lonlat = ol.proj.toLonLat(e.coordinate);
+        $longitude.value = lonlat[0];
+        $latitude.value = lonlat[1];
+      });
 
       var waypoints = []
 
       var $name = document.getElementById('add_waypoint_name')
       var $form = document.getElementById('add_waypoint_form')
       var $button = document.getElementById('add_waypoint_button')
-      var $name_button = document.getElementById('add_name_button')
       var $latitude = document.getElementById('add_latitude')
-      var $longtitude = document.getElementById('add_longtitude')
+      var $longitude = document.getElementById('add_longitude')
       var $list = document.getElementById('waypoints')
 
+      map.on('click', function(e) {
+        var lonlat = ol.proj.toLonLat(e.coordinate);
+        $longitude.value = lonlat[0];
+        $latitude.value = lonlat[1];
+      });
+
       function compare(a, b){
             var x = a.name.toLowerCase();
             var y = b.name.toLowerCase();
@@ -73,8 +111,8 @@
         event.preventDefault()       
         var name = $name.value.trim()
         if(!name) return;
-        var lat = parseFloat($latitude.value).toPrecision(5);
+        var lat = parseFloat($latitude.value).toPrecision(8);
-        var lon = parseFloat($longtitude.value).toPrecision(5);
+        var lon = parseFloat($longitude.value).toPrecision(8);
 
         waypoints.push({
           name, lat,lon,
@@ -84,31 +122,21 @@
 
         renderWaypoints()
         $name.value = ''
-        $latitude.value = (0).toPrecision(5);
+        $latitude.value = (0).toPrecision(8);
-        $longtitude.value = (0).toPrecision(5);
+        $longitude.value = (0).toPrecision(8);
       });
 
-      $name_button.addEventListener('click', event => {
-        event.preventDefault()       
-        var name = $name.value.trim()
-        if(!name) return;
-
-        waypoints.push({
-          name
-        });
-        waypoints.sort(compare);
-
-        renderWaypoints()
-        $name.value = ''
-        $latitude.value = 0.0000
-        $longtitude.value = 0.0000
-      });
-
-
       function removeWaypoint(index){
         $name.value = waypoints[index].name
-        $latitude.value = waypoints[index].lat
+        if (waypoints[index].lat !== undefined && waypoints[index].lon !== undefined
-        $longtitude.value = waypoints[index].lon
+                && !isNaN(waypoints[index].lat) && !isNaN(waypoints[index].lon)) {
+            $latitude.value = waypoints[index].lat
+            $longitude.value = waypoints[index].lon
+            map.getView().animate({
+                center: ol.proj.fromLonLat([waypoints[index].lon, waypoints[index].lat]),
+                zoom: Math.max(map.getView().getZoom(),16)
+            });
+        }
         waypoints = waypoints.filter((p,i) => i!==index)
         renderWaypoints()
       }