wp-gpx-maps/WP-GPX-Maps.js

238 lines
5.6 KiB
JavaScript

/*
WP-GPX-Maps
*/
var loc_en =
{
"length" : "Length",
"altitude": "Altitude"
};
var loc_it =
{
"length" : "Lunghezza",
"altitude": "Altitudine"
};
var loc = loc_en;
var t;
var funqueue = [];
var infowindow
var wrapFunction = function(fn, context, params) {
return function() {
fn.apply(context, params);
};
}
function wpgpxmaps(targhetId,mapType,mapData,graphData,waypoints)
{
funqueue.push( wrapFunction(_wpgpxmaps, this, [targhetId,mapType,mapData,graphData,waypoints]));
unqueue();
}
function unqueue()
{
if ((google == undefined || google.maps == undefined || google.visualization == undefined))
{
t = setTimeout("unqueue()",200);
}
else
{
while (funqueue.length > 0) {
(funqueue.shift())();
}
}
}
function _wpgpxmaps(targhetId,mapType,mapData,graphData,waypoints)
{
var el = document.getElementById("wpgpxmaps_" + targhetId);
var el_map = document.getElementById("map_" + targhetId);
var el_chart = document.getElementById("chart_" + targhetId);
switch (mapType)
{
case 'TERRAIN': { mapType = google.maps.MapTypeId.TERRAIN; break;}
case 'SATELLITE': { mapType = google.maps.MapTypeId.SATELLITE; break;}
case 'ROADMAP': { mapType = google.maps.MapTypeId.ROADMAP; break;}
default: { mapType = google.maps.MapTypeId.HYBRID; break;}
}
var mapOptions = {
mapTypeId: mapType
};
var map = new google.maps.Map(el_map, mapOptions);
// Print WayPoints
if (waypoints != '')
{
var image = new google.maps.MarkerImage('http://maps.google.com/mapfiles/ms/micons/flag.png',
new google.maps.Size(32, 32),
new google.maps.Point(0,0),
new google.maps.Point(16, 32)
);
var shadow = new google.maps.MarkerImage('http://maps.google.com/mapfiles/ms/micons/flag.shadow.png',
new google.maps.Size(59, 32),
new google.maps.Point(0,0),
new google.maps.Point(16, 32)
);
for(var i in waypoints)
{
addWayPoint(map, image, shadow, waypoints[i][0], waypoints[i][1], waypoints[i][2], waypoints[i][3]);
}
}
// Print Track
if (mapData != '')
{
var points = [];
var bounds = new google.maps.LatLngBounds();
for(var i in mapData)
{
var p = new google.maps.LatLng(mapData[i][0], mapData[i][1]);
points.push(p);
bounds.extend(p);
}
var poly = new google.maps.Polyline({
path: points,
strokeColor: "#3366cc",
strokeOpacity: .7,
strokeWeight: 4
});
poly.setMap(map);
map.setCenter(bounds.getCenter());
map.fitBounds(bounds);
var first = getItemFromArray(mapData,0)
var current = new google.maps.MarkerImage("http://maps.google.com/mapfiles/kml/pal4/icon25.png",
new google.maps.Size(32, 32),
new google.maps.Point(0,0),
new google.maps.Point(16, 16)
);
var marker = new google.maps.Marker({
position: new google.maps.LatLng(first[0], first[1]),
title:"Start",
icon: current,
map: map,
zIndex: 10
});
google.maps.event.addListener(poly,'mouseover',function(event){
if (marker)
{
marker.setPosition(event.latLng);
marker.setTitle("Current Position");
if ( chart )
{
var ci = getClosestIndex(mapData,event.latLng.Qa,event.latLng.Ra);
var r = chart.setSelection([{'row': parseInt(ci) + 1}]);
}
}
});
}
// Print Graph
if (graphData!= '')
{
var data = new google.visualization.DataTable();
data.addColumn('number', loc['length']);
data.addColumn('number', loc['altitude']);
data.addRows(graphData);
var chart = new google.visualization.AreaChart(el_chart);
var options = { curveType: "function",
strictFirstColumnType: true,
hAxis : {format : '#,###m', title : loc['length']},
vAxis : {format : '#,###m', title : loc['altitude']},
legend : {position : 'none'},
chartArea: {left:70,top:10,width:"100%",height:"75%"}
};
chart.draw(data, options);
google.visualization.events.addListener(chart, 'onmouseover', function (e) {
var r = e['row'];
chart.setSelection([e]);
if (marker)
{
var point = getItemFromArray(mapData,r)
marker.setPosition(new google.maps.LatLng(point[0],point[1]));
marker.setTitle("Current Position");
}
});
//google.visualization.events.addListener(chart, 'onmouseout', function (e) {
//chart.setSelection([e]);
//});
}
else
{
el_chart.style.display='none';
}
}
function addWayPoint(map, image, shadow, lat, lon, title, descr)
{
var p = new google.maps.LatLng(lat, lon);
var m = new google.maps.Marker({
position: p,
map: map,
title: title,
animation: google.maps.Animation.DROP,
shadow: shadow,
icon: image,
zIndex: 5
});
google.maps.event.addListener(m, 'mouseover', function() {
if (infowindow)
{
infowindow.close();
}
infowindow = new google.maps.InfoWindow({
content: "<b>" + title + "</b></br />" + descr
});
infowindow.open(map,m);
});
}
function getItemFromArray(arr,index)
{
try
{
return arr[index];
}
catch(e)
{
return [0,0];
}
}
function getClosestIndex(points,lat,lon)
{
var dd=10000;
var ii=0;
for(var i in points)
{
var d = dist(points[i][0], points[i][1], lat, lon);
if (d<dd)
{
ii=i;
dd=d;
}
}
return ii;
}
function dist(lat1,lon1,lat2,lon2)
{
// mathematically not correct but fast
var dLat = (lat2-lat1);
var dLon = (lon2-lon1);
var a = Math.sin(dLat) * Math.sin(dLat) +
Math.sin(dLon) * Math.sin(dLon) * Math.cos(lat1) * Math.cos(lat2);
return Math.atan2(Math.sqrt(a), Math.sqrt(1-a));
}