workerscript.js Example File

 var lastx = 0;
 var lasty = 0;

 WorkerScript.onMessage = function(message) {
     var ydiff = message.y - lasty;
     var xdiff = message.x - lastx;

     var total = Math.sqrt(ydiff * ydiff + xdiff * xdiff);

     lastx = message.x;
     lasty = message.y;

     WorkerScript.sendMessage( {xmove: xdiff, ymove: ydiff, move: total} );
 }

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