pnp_maps/maps_trips.php at master · pilotsnpaws/pnp_maps · GitHub

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<!DOCTYPE html >
<head>
	<link rel="shortcut icon" href="/favicon.ico" />
	<meta name="viewport" content="initial-scale=1.0, user-scalable=no" />
	<meta http-equiv="content-type" content="text/html; charset=UTF-8"/>
	<title>Pilotsnpaws.org trip request map</title>
	<script src="https://maps.googleapis.com/maps/api/js?key=UPDATE_KEY_HERE_TODO&v=3&libraries=geometry"></script>
	<script type="text/javascript">
    //<![CDATA[

	var map;
	var flightPaths = [];
	var lastPostAge;
	function initialize() {
		var mapOptions = {
			zoom: 5,
			center: new google.maps.LatLng(38.000000,-98.000000),
			scaleControl: true,
			mapTypeId: google.maps.MapTypeId.ROADMAP
		  };
		map = new google.maps.Map(document.getElementById('gMap'),mapOptions);
		updateTrips();

		// add options box
		map.controls[google.maps.ControlPosition.TOP_LEFT].push(document.getElementById('optionsBox'));


		// add legend table
		map.controls[google.maps.ControlPosition.RIGHT_BOTTOM].push(document.getElementById('legend'));

	}

	function updateTrips() {

	removeFlightPaths();

	lastPostAge = document.getElementById("lastPostAge").value;
	// alert(lastPostAge);

	var searchURL = "maps_create_trips_xml.php?lastPostAge=" + lastPostAge;
	downloadUrl(searchURL, function(data) {
	var xml = data.responseXML;

	var pathInfoWindow = new google.maps.InfoWindow();

	// radians to degrees
	function toDeg(rad) {
		return rad * 180 / Math.PI;
	}

	// degrees to radians
	function toRad(deg) {
		return deg * Math.PI / 180;
	}

	// calulate the flight direction
	function getBearing(lat1, lon1, lat2, lon2) {
		var d = toRad((lon2 - lon1));
		var y = Math.sin(d) * Math.cos(toRad(lat2));
		var x = Math.cos(toRad(lat1)) * Math.sin(toRad(lat2)) - Math.sin(toRad(lat1)) * Math.cos(toRad(lat2)) * Math.cos(d);
		var brng = toDeg(Math.atan2(y, x));
		return (360 + brng) % 360;
    }

	var trips = xml.documentElement.getElementsByTagName("trip");
		for (var i = 0; i < trips.length; i++) {
			var topic = trips[i].getAttribute("topicTitle");
			var topicID = trips[i].getAttribute("topicID");
			var lastPost = trips[i].getAttribute("lastPost");
			var lastPostHuman = trips[i].getAttribute("lastPostHuman");
			var sendLat = trips[i].getAttribute("sendLat");
			var sendLon = trips[i].getAttribute("sendLon");
			var recLat = trips[i].getAttribute("recLat");
			var recLon = trips[i].getAttribute("recLon");
			var sendZip = trips[i].getAttribute("sendZip");
			var recZip = trips[i].getAttribute("recZip");
			var sendCity = trips[i].getAttribute("sendCity");
			var recCity = trips[i].getAttribute("recCity");
			var flightPlanCoordinates = [
				new google.maps.LatLng(sendLat, sendLon),
				new google.maps.LatLng(recLat, recLon),
				];

			// determine color for flight direction
			var bearing = getBearing(sendLat, sendLon, recLat, recLon);
			if (bearing >= 0 && bearing < 180)
				// 0-179 deg (Eastbound)
				{ var directionColor = '#00AD6E'; // greenish
				}
			else
				// 180-359 deg (Westbound)
				{ var directionColor = '#8D00DE'; // purple
				}

			// show direction of flight
			var lineType = { path: google.maps.SymbolPath.FORWARD_CLOSED_ARROW };

			// do length calcs, make a dummy path to get length.. if not, cant calc length in the html string below
			var lengthFlightPath = new google.maps.Polyline({
				path: flightPlanCoordinates
				});
			var lengthMeters = google.maps.geometry.spherical.computeLength(lengthFlightPath.getPath())  ;
			var lengthMiles = Math.round(lengthMeters / 1609.344);
			var lengthNM = Math.round(lengthMeters / 1852);

			var strHTML = '<a href=/forum/viewtopic.php?t=' + topicID +
					' target="_blank" >' + topic + '</a><br>' +
					'From ' + sendCity + ' to ' + recCity + '<br>' +
					'Distance: ' + lengthMiles + ' miles / ' + lengthNM  + ' nm' + '<br>' +
					'Topic last updated: ' + lastPostHuman

			var flightPath = new google.maps.Polyline({
				path: flightPlanCoordinates,
				strokeColor: directionColor,
				icons: [{ icon: lineType, offset: '100%' }],
				strokeOpacity: 1.0,
				strokeWeight: 2,
				html: strHTML,
				geodesic : true,
				});

			flightPaths.push(flightPath);

			google.maps.event.addListener(flightPath, 'click', function(event) {

			// get the click's latlng and use that as anchor for infoWindow
			// found here: http://stackoverflow.com/questions/9998003/calling-infowindow-w-google-map-v3-api
				var marker = new google.maps.Marker({
				position: event.latLng,
				map: map
				});

			// set the info popup content as the html from polyline above
				pathInfoWindow.setContent(this.html);
				pathInfoWindow.open(map, marker);

				google.maps.event.addListener(map, 'click', function(event) {
					pathInfoWindow.close(map, marker);
				} );

				});

			flightPath.setMap(map);
			}
		});
	}

	function downloadUrl(url, callback) {
		var request = window.ActiveXObject ?
		new ActiveXObject('Microsoft.XMLHTTP') :
		new XMLHttpRequest;

		request.onreadystatechange = function() {
		if (request.readyState == 4) {
			request.onreadystatechange = doNothing;
			callback(request, request.status);
			}
		}

		request.open('GET', url, true);
		request.send(null);
	}

// got this from http://stackoverflow.com/questions/9058911/cant-remove-mvcarray-polylines-using-google-maps-api-v3
function removeFlightPaths() {
           for (var i=0; i < flightPaths.length; i++) {
                flightPaths[i].setMap(null);
            }

            // you probably then want to empty out your array as well
            flightPaths = [];

            // not sure you'll require this at this point, but if you want to also clear out your array of coordinates...
            //routePoints.clear();
    }

	function doNothing() {}

	google.maps.event.addDomListener(window, 'load', initialize);

    //]]>

  </script>

  <!-- Google analytics added 2015-05-06 -->
	<script>
	  (function(i,s,o,g,r,a,m){i['GoogleAnalyticsObject']=r;i[r]=i[r]||function(){
	  (i[r].q=i[r].q||[]).push(arguments)},i[r].l=1*new Date();a=s.createElement(o),
	  m=s.getElementsByTagName(o)[0];a.async=1;a.src=g;m.parentNode.insertBefore(a,m)
	  })(window,document,'script','//www.google-analytics.com/analytics.js','ga');

	  ga('create', 'UA-62646402-1', 'auto');
	  ga('send', 'pageview');

	</script>
	<!-- End Google analytics added 2015-05-06 -->

  </head>

  <body >

	<style>
	html, body {
		margin:0;
		padding:0;
		height:100%; /* needed for container min-height */
		}

	#legend {
			background: white;
			padding: 10px;
			width: 100px;;
		}

	#optionsBox {
			background: white;
			padding: 10px;
		}

	</style>

	<div id="optionsBox">
		Filter by recent activity:
		<select id="lastPostAge">
			<option value="0">Today only</option>
			<option value="3">In the last 3 days</option>
			<option value="5">In the last 5 days</option>
			<option value="7">In the last 7 days</option>
			<option value="14" selected="selected">In the last 14 days</option>
			<option value="30">In the last 30 days</option>
			<option value="365">Last 12 months</option>
		</select>

		<input type="button" onclick="updateTrips()" value="Search"/>
	</div>

	<div id="legend">
		<div style="margin-bottom:5px;font-weight:500;">Legend:</div>
		<div style="float:left;width:30px;height:1em;background-color:#8D00DE;border: 1px solid black;;"></div>
		<div style="float:left;padding-left:5px;"> Westbound</div>
		<div style="float:left;width:30px;height:1em;background-color:#00AD6E;border: 1px solid black;"></div>
		<div style="float:left;padding-left:5px;"> Eastbound</div>
	</div>

    <div id="gMap" style="width: 100%; height: 100%;"></div>
  </body>

</html>