package { import flash.display.*; import flash.events.*; import flash.utils.*; import flash.text.*; public class Main extends Sprite { private var lastFrameTime:Number; private var output:TextField = new TextField( ); public function Main() { output.autoSize = TextFieldAutoSize.LEFT; output.border = true; output.background = true; output.selectable = false; addChild(output); addEventListener(Event.ENTER_FRAME, enterFrameListener); } private function enterFrameListener (e:Event):void { var now:Number = getTimer( ); var elapsed:Number = now - lastFrameTime; var framesPerSecond:Number = Math.round(1000/elapsed); output.text = "Time since last frame: " + elapsed + "nExtrapolated actual frame rate: " + framesPerSecond + "nDesignated frame rate: " + stage.frameRate; lastFrameTime = now; } }}
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