MapRadar/OSM.html at master · omit66/MapRadar · GitHub

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<!DOCTYPE html>
<html>

<head>
  <title>OL RADAR</title>
  <meta name="viewport" content="initial-scale=1.0, user-scalable=no">
  <meta charset="utf-8">
  <style type="text/css">
    html,
    body,
    #map {
      position: relative;
      width: 100%;
      height: 100%;
      margin: 0;
    }
  </style>
  <link rel="stylesheet" href="https://openlayers.org/en/v4.2.0/css/ol.css" type="text/css">
  <!-- The line below is only needed for old environments like Internet Explorer and Android 4.x -->
  <script src="https://cdn.polyfill.io/v2/polyfill.min.js?features=requestAnimationFrame,Element.prototype.classList,URL"></script>
  <script src="https://openlayers.org/en/v4.2.0/build/ol.js"></script>

  <script src="https://code.jquery.com/jquery-2.2.3.min.js"></script>
  <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/css/bootstrap.min.css">
  <script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/js/bootstrap.min.js"></script>

  <body onload="init();">
    <div id="map" class="map">
      <div id="popup"></div>
    </div>
  </body>
  <script>
    var rotation = 0;
    var pos = {
      lat: -34.397,
      lng: 150.644
    };
    var zoom = 15;
    var view = new ol.View({
      center: ol.proj.transform([pos.lng, pos.lat], 'EPSG:4326', 'EPSG:3857'),
      rotation: rotation,
      zoom: zoom
    });

    var map = new ol.Map({
      layers: [
        new ol.layer.Tile({
          source: new ol.source.OSM()
        })
      ],
      target: document.getElementById('map'),
      controls: ol.control.defaults({
        attributionOptions: /** @type {olx.control.AttributionOptions} */ ({
          collapsible: false
        })
      }),
      view: view
    });
    var markerLayer;
    var currentLayer; //TODO: besser machen

    function init() {

      if (navigator.geolocation) {
        navigator.geolocation.watchPosition(onPosChanged,
          function() {
            //TODO:  handleLocationError(true, infoWindow, map.getCenter());
          });
      } else {
        // Browser doesn't support Geolocation
        //TODO:  handleLocationError(false, infoWindow, map.getCenter());
      }

      var element = document.getElementById('popup');
      // Popup showing the position the user clicked
      var popup = new ol.Overlay({
        element: element,
        positioning: 'bottom-center',
        stopEvent: false,
        offset: [0, -50]
      });
      map.addOverlay(popup);

      map.on('click', function(evt) {
        var feature = map.forEachFeatureAtPixel(evt.pixel,
          function(feature) {
            return feature;
          });
        if (feature) {
          var coordinates = feature.getGeometry().getCoordinates();
          popup.setPosition(coordinates);
          $(element).popover({
            'placement': 'top',
            'html': true,
            'content': feature.get('name')
          });
          $(element).popover('show');
        } else {
          $(element).popover('destroy');
        }
      });

    }

    function onPosChanged(position) {
      pos = {
        lat: position.coords.latitude,
        lng: position.coords.longitude
      };
      //    drawCurrentPos();
      //    drawKnownPlaces();
      //  nearbySearch();

      /*
            var markers = new OpenLayers.Layer.Markers("Markers");
            map.addLayer(markers);
            markers.addMarker(new OpenLayers.Marker(position));
      */

      drawCurrentPos();
      drawKnownPlaces();

      //  map.setCenter(lonLat, zoom);
      console.log("center" + [pos.lng, pos.lat]);
      map.getView().setCenter(ol.proj.transform([pos.lng, pos.lat], 'EPSG:4326', 'EPSG:3857'));
    }

    function drawCurrentPos() {
      if (currentLayer) {
        map.removeLayer(currentLayer);
      }
      var iconFeature = new ol.Feature({
        geometry: new ol.geom.Point(ol.proj.transform([pos.lng, pos.lat], 'EPSG:4326', 'EPSG:3857')),
        name: 'Hier bin ich',
        population: 4000,
        rainfall: 500
      });

      var iconStyle = new ol.style.Style({
        image: new ol.style.Icon( /** @type {olx.style.IconOptions} */ ({
          anchor: [0.5, 46],
          anchorXUnits: 'fraction',
          anchorYUnits: 'pixels',
          src: 'http://maps.google.com/mapfiles/ms/icons/blue-dot.png'
        }))
      });

      iconFeature.setStyle(iconStyle);

      var vectorSource = new ol.source.Vector({
        features: [iconFeature]
      });

      var vectorLayer = new ol.layer.Vector({
        source: vectorSource
      });
      currentLayer = vectorLayer;
      map.addLayer(vectorLayer);
    }


    function distanceBetweenPoints(latlng1, latlng2) {
      var line = new ol.geom.LineString([latlng1, latlng2]);
      return line.getLength();
    }

    function getBounds() {
      var extent = map.getView().calculateExtent(map.getSize());
      extent = ol.proj.transformExtent(extent, 'EPSG:3857', 'EPSG:4326');
      return extent;
    }

    async function createMarker(place, vs) {
      //console.log("PLACE: ", place.name);
      var bounds = await getBounds();
      var home = [places[2].lng, places[2].lat];
      var distance = distanceBetweenPoints(home, [place.lng, place.lat]);
      console.log(distance);

      if (!ol.extent.containsCoordinate(bounds, [place.lng, place.lat])) {
        var padding = 0.002 - distance / 100;
        var m = (place.lat - pos.lat) / (place.lng - pos.lng);

        var placeLoc;
        var x, y;
        var compl = false;
        bounds.maxx = bounds[2];
        bounds.maxy = bounds[3];
        bounds.minx = bounds[0];
        bounds.miny = bounds[1];
        if (bounds.maxx <= place.lng) {
          y = m * (bounds.maxx - pos.lng) + pos.lat;
          x = bounds.maxx - padding;
        } else if (bounds.minx >= place.lng) {
          y = m * (bounds.minx - pos.lng) + pos.lat;
          x = bounds.minx + (padding);
        }
        if (y <= bounds.maxy && y >= bounds.miny) {
          compl = true;
        }
        if ((!compl)) {

          if (bounds.maxy <= place.lat) {

            x = (bounds.maxy + m * pos.lng - pos.lat) / m;
            y = bounds.maxy - padding;;
          } else if (bounds.miny >= place.lat) {

            x = (bounds.miny + m * pos.lng - pos.lat) / m;
            y = bounds.miny + padding / 2;
          }
        }

        placeLoc = {
          lat: y,
          lng: x
        };

        var iconFeature = new ol.Feature({
          geometry: new ol.geom.Point(ol.proj.transform([placeLoc.lng, placeLoc.lat], 'EPSG:4326', 'EPSG:3857')),
          name: 'undefined',
          population: 4000,
          rainfall: 500
        });


        //console.log(distance, place.icon, 0.3 - distance);
        var iconStyle = new ol.style.Style({
          image: new ol.style.Icon( /** @type {olx.style.IconOptions} */ ({
            //size: [50, 50],
            scale: 0.3 - distance * 1.5,
            src: place.icon
          }))
        });
        iconFeature.setStyle(iconStyle);
        vs.push(iconFeature);
      }
      var iconFeature = new ol.Feature({
        geometry: new ol.geom.Point(ol.proj.transform([place.lng, place.lat], 'EPSG:4326', 'EPSG:3857')),
        name: 'undefined',
        population: 4000,
        rainfall: 500
      });

      var iconStyle = new ol.style.Style({
        image: new ol.style.Icon( /** @type {olx.style.IconOptions} */ ({
          //size: [50, 50],
          scale: 0.1,
          src: place.icon
        }))
      });
      iconFeature.setStyle(iconStyle);
      vs.push(iconFeature);
    }

    var places = [{
        lng: 8.769332,
        lat: 53.098145,
        icon: './icons/landmark.png'
      },
      {
        lng: 8.809172,
        lat: 53.074748,
        icon: './icons/start.png'
      },
      {
        lng: 8.878000,
        lat: 53.097930,
        icon: './icons/home.png'
      },
      {
        lng: 8.805053,
        lat: 53.074786,
        icon: './icons/finish.png'
      }
    ];

    async function drawKnownPlaces() {
      await clearMarkers();

      var vs = [];
      for (var i = 0; i < places.length; i++) {

        await createMarker(places[i], vs);
      }
      var vectorSource = new ol.source.Vector({
        features: vs
      });

      vectorLayer = new ol.layer.Vector({
        source: vectorSource
      });
      markerLayer = vectorLayer;
      map.addLayer(vectorLayer);
    }

    function clearMarkers() {
      if (markerLayer) {
        map.removeLayer(markerLayer);
      }
    }

    // browser agnostic orientation
    function getBrowserOrientation() {

      var orientation;
      if (screen.orientation && screen.orientation.type) {
        orientation = screen.orientation.type;
      } else {
        orientation = screen.orientation ||
          screen.mozOrientation ||
          screen.msOrientation;
      }

      /*
        'portait-primary':      for (screen width < screen height, e.g. phone, phablet, small tablet)
                                  device is in 'normal' orientation
                                for (screen width > screen height, e.g. large tablet, laptop)
                                  device has been turned 90deg clockwise from normal
        'portait-secondary':    for (screen width < screen height)
                                  device has been turned 180deg from normal
                                for (screen width > screen height)
                                  device has been turned 90deg anti-clockwise (or 270deg clockwise) from normal
        'landscape-primary':    for (screen width < screen height)
                                  device has been turned 90deg clockwise from normal
                                for (screen width > screen height)
                                  device is in 'normal' orientation
        'landscape-secondary':  for (screen width < screen height)
                                  device has been turned 90deg anti-clockwise (or 270deg clockwise) from normal
                                for (screen width > screen height)
                                  device has been turned 180deg from normal
      */

      return orientation;
    }


    var defaultOrientation;
    // called on device orientation change
    function onHeadingChange(event) {

      var heading = event.alpha;

      if (event.webkitCompassHeading) {
        heading = event.webkitCompassHeading; //iOS non-standard
      }

      var orientation = getBrowserOrientation();

      if (typeof heading !== "undefined" && heading !== null) { // TODO && typeof orientation !== "undefined") {
        // we have a browser that reports device heading and orientation


        // what adjustment we have to add to rotation to allow for current device orientation
        var adjustment = 0;
        if (defaultOrientation === "landscape") {
          adjustment -= 90;
        }

        if (typeof orientation !== "undefined") {
          var currentOrientation = orientation.split("-");

          if (defaultOrientation !== currentOrientation[0]) {
            if (defaultOrientation === "landscape") {
              adjustment -= 270;
            } else {
              adjustment -= 90;
            }
          }

          if (currentOrientation[1] === "secondary") {
            adjustment -= 180;
          }
        }
        //deg to rad
        rotation = (heading + adjustment) * Math.PI / 180;
        view.setRotation(rotation);
        drawKnownPlaces();

        console.log(rotation);
        console.log(heading);
      }
    }

    window.addEventListener("deviceorientation", onHeadingChange);


    var geolocation = new ol.Geolocation({
      // take the projection to use from the map's view
      projection: view.getProjection()
    });
    // listen to changes in position
    geolocation.on('change', function(evt) {
      console.log("POS EVENT: " + geolocation.getPosition());
    });
  </script>
</head>


</html>