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jquerymousemoveeasing

Jquery - Animate Background position with easing


I am trying to animate a background on mousemove with some easing using jquery animate. But cant figure out how to stop the queuing of the animation and have the animation "follow" the mouse around

HTML:

Animate Background<br />
<div id="animateme"></div>​

JS:

$("#animateme").bind('mousemove', function(e) {

    $(this).animate({
        'background-position-x': e.pageX,
        'background-position-y': e.pageY
    }, 100, 'swing');

});​

I have set up a jsfiddle to hopefully show what i mean http://jsfiddle.net/KunZ4/1/

Hover over the top image and you can see the background animation follows the mouse. But i want to add some easing to this, so it follows the mouse a bit smoother.

Using jquery animation seems to queue, but i want the animation to kind of catch up to the mouse on a bit of a delay when mouse movement is stopped.

I am wanting to achieve this without the use of UI or Plugins.

Hopefully that makes some kind of sense


Solution

  • I found something that worked for me, for anyone else looking for this

    http://jsfiddle.net/KunZ4/6/

    The easing can be adjusted by changing the duration

    $.easing.smoothmove = function (x, t, b, c, d) {
    return -c *(t/=d)*(t-2) + b;
     }; 
    
    
    $("#animateme").bind('mousemove', function(e){
    
     $(this).animate({
       'background-position-x': e.pageX,
       'background-position-y': e.pageY
     }, {queue:false,duration:200,easing:'smoothmove'});
    
     });    
    

    Thanks for all the help