Animates the movement of Google Maps markers.
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README.md

Animated marker movement in Google Maps

A nice alternative to marker.setPosition(latLng). Include jQuery and jQuery Easing Plugin for more easing options.

Demo: http://robsite.net/static/markermove/markermove.html (click on the map)

Update: For a much nicer and unobtrusive marker animation library based on this one, check out marker-animate-unobtrusive

Usage

Include markerAnimate.js after Google Maps and call animateTo on a google.maps.Marker:

// params:
// newPosition        - the new Position as google.maps.LatLng()
// options.duration   - animation duration in ms (default 1000)
// options.easing     - easing function from jQuery and/or the jQuery easing plugin (default 'linear')
// options.complete   - callback function. Gets called, after the animation has finished

marker.animateTo(newPosition [, {easing: 'easeOutBounce', duration: 1000, complete: function(){}}]);

Example

var marker = new google.maps.Marker({position: new google.maps.LatLng(0,0), map: myMap, title: 'Hello World!'});
var newPosition = new google.maps.LatLng(13,42);

// move marker in 1000ms and with linear animation.
marker.animateTo(newPosition); 

// or with callback and options for easing and duration in milliseconds. Needs jQuery Easing Plugin.
marker.animateTo(newPosition, {  easing: "easeOutBounce",
                                 duration: 1000,
                                 complete: function() {
                                   alert("animation complete");
                                 }
                              });