google marker animation break
I found some code for google maps marker movement. So i just wanna animate marker moving from one location to another. Here in this code for loop is for marker moving, i want to stop the loop when marker arrives on half route. How i can break for loop?
I Tried with if statment, but nothing, when site being loaded immediately execute that if statement and then set marker and for loop begins. If you have simpler
method for marker animation please share.
Here is the code
<!DOCTYPE html>
<html>
<head>
<meta name="viewport" content="initial-scale=1.0, user-scalable=no"/>
<meta http-equiv="content-type" content="text/html; charset=UTF-8"/>
<title>GeekOnJava: Directions Complex</title>
<style>
html{height:100%;}
body{height:100%;margin:0px;font-family: Helvetica,Arial;}
</style>
<script type="text/javascript" src="http://maps.google.com/maps/api/js?sensor=false"></script>
<script type="text/javascript">
var map;
var directionDisplay;
var directionsService;
var stepDisplay;
var position;
var marker = [];
var polyline = [];
var poly2 = [];
var poly = null;
var startLocation = [];
var endLocation = [];
var timerHandle = [];
var speed = 0.000005, wait = 1;
var infowindow = null;
var myPano;
var panoClient;
var nextPanoId;
var startLoc = new Array();
startLoc[0] = 'Aranji Janoša, Zrenjanin';
var endLoc = new Array();
endLoc[0] = 'Hunjadi Janoša, Zrenjanin';
var Colors = ["#FF0000", "#00FF00", "#0000FF"];
function initialize() {
infowindow = new google.maps.InfoWindow(
{
size: new google.maps.Size(150,50)
});
var myOptions = {
zoom: 16,
mapTypeId: google.maps.MapTypeId.ROADMAP
}
map = new google.maps.Map(document.getElementById("map_canvas"), myOptions);
address = 'Serbia'
geocoder = new google.maps.Geocoder();
geocoder.geocode( { 'address': address}, function(results, status) {
map.fitBounds(results[0].geometry.viewport);
});
// setRoutes();
}
function createMarker(latlng, label, html) {
// alert("createMarker("+latlng+","+label+","+html+","+color+")");
var contentString = '<b>'+label+'</b><br>'+html;
var marker = new google.maps.Marker({
position: latlng,
map: map,
title: label,
zIndex: Math.round(latlng.lat()*-100000)<<5
});
marker.myname = label;
google.maps.event.addListener(marker, 'click', function() {
infowindow.setContent(contentString);
infowindow.open(map,marker);
});
return marker;
}
function setRoutes(){
var directionsDisplay = new Array();
for (var i=0; i< startLoc.length; i++){
var rendererOptions = {
map: map,
suppressMarkers : true,
preserveViewport: true
}
directionsService = new google.maps.DirectionsService();
var travelMode = google.maps.DirectionsTravelMode.DRIVING;
var request = {
origin: startLoc[i],
destination: endLoc[i],
travelMode: travelMode
};
directionsService.route(request,makeRouteCallback(i,directionsDisplay[i]));
}
function makeRouteCallback(routeNum,disp){
if (polyline[routeNum] && (polyline[routeNum].getMap() != null)) {
startAnimation(routeNum);
return;
}
return function(response, status){
if (status == google.maps.DirectionsStatus.OK){
var bounds = new google.maps.LatLngBounds();
var route = response.routes[0];
startLocation[routeNum] = new Object();
endLocation[routeNum] = new Object();
polyline[routeNum] = new google.maps.Polyline({
path: [],
strokeColor: '#FFFF00',
strokeWeight: 3
});
poly2[routeNum] = new google.maps.Polyline({
path: [],
strokeColor: '#FFFF00',
strokeWeight: 3
});
// For each route, display summary information.
var path = response.routes[0].overview_path;
var legs = response.routes[0].legs;
disp = new google.maps.DirectionsRenderer(rendererOptions);
disp.setMap(map);
disp.setDirections(response);
//Markers
for (i=0;i<legs.length;i++) {
if (i == 0) {
startLocation[routeNum].latlng = legs[i].start_location;
startLocation[routeNum].address = legs[i].start_address;
// marker = google.maps.Marker({map:map,position: startLocation.latlng});
marker[routeNum] = createMarker(legs[i].start_location,"start",legs[i].start_address,"green");
endLocation[routeNum].latlng = legs[i].end_location;
endLocation[routeNum].address = legs[i].end_address;
var steps = legs[i].steps;
for (j=0;j<steps.length;j++) {
var nextSegment = steps[j].path;
var nextSegment = steps[j].path;
for (k=0;k<nextSegment.length;k++) {
polyline[routeNum].getPath().push(nextSegment[k]);
//bounds.extend(nextSegment[k]);
}
}
}
}
polyline[routeNum].setMap(map);
//map.fitBounds(bounds);
startAnimation(routeNum);
var g = marker[0].getPosition();
var z = endLocation[0].latlng;
if (g == z){
alert("kraj");
}
} // else alert("Directions request failed: "+status);
}
}
var lastVertex = 1;
var stepnum=0;
var step = 50; // 5; // metres
var tick = 100; // milliseconds
var eol= [];
//----------------------------------------------------------------------
function updatePoly(i,d) {
// Spawn a new polyline every 20 vertices, because updating a 100-vertex poly is too slow
if (poly2[i].getPath().getLength() > 20) {
poly2[i]=new google.maps.Polyline([polyline[i].getPath().getAt(lastVertex-1)]);
// map.addOverlay(poly2)
}
if (polyline[i].GetIndexAtDistance(d) < lastVertex+2) {
if (poly2[i].getPath().getLength()>1) {
poly2[i].getPath().removeAt(poly2[i].getPath().getLength()-1)
}
poly2[i].getPath().insertAt(poly2[i].getPath().getLength(),polyline[i].GetPointAtDistance(d));
} else {
poly2[i].getPath().insertAt(poly2[i].getPath().getLength(),endLocation[i].latlng);
}
}
//----------------------------------------------------------------------------
function animate(index,d) {
if (d>eol[index]) {
var g = marker[index].setPosition(endLocation[index].latlng);
marker[index].setPosition(endLocation[index].latlng);
return;
}
var p = polyline[index].GetPointAtDistance(d);
//map.panTo(p);
marker[index].setPosition(p);
updatePoly(index,d);
timerHandle[index] = setTimeout("animate("+index+","+(d+step)+")", tick);
}
//-------------------------------------------------------------------------
function startAnimation(index) {
if (timerHandle[index]) clearTimeout(timerHandle[index]);
eol[index]=polyline[index].Distance();
map.setCenter(polyline[index].getPath().getAt(0));
poly2[index] = new google.maps.Polyline({path: [polyline[index].getPath().getAt(0)], strokeColor:"#FFFF00", strokeWeight:3});
timerHandle[index] = setTimeout("animate("+index+",50)",2000); // Allow time for the initial map display
}
//----------------------------------------------------------------------------
</script>
</head>
<body onload="initialize()">
<div id="tools">
<button onclick="setRoutes();">Start</button>
</div>
<div id="map_canvas" style="width:100%;height:100%;"></div>
</body>
</html>
