Easing animation

programming flash
1

Hi,

I need some help on easing animation with animated drawing line. Here my problem:

The user will define the target for the end point of animated drawing line. I did a simple code but it did not turn up well. Whenever I click the end point and I start start button to start the animated drawing line it will not stop at the extract end point.


       public function init():void
        {
            canDrawing.addEventListener(MouseEvent.CLICK, insertCircle);
        }
        
        public function insertCircle(evt:MouseEvent):void
        {
            shape.graphics.beginFill(0x00ffee);
            shape.graphics.drawCircle(canDrawing.mouseX, canDrawing.mouseY, 5);
            canDrawing.rawChildren.addChild(shape);
            getMouseX = canDrawing.mouseX;
            getMouseY = canDrawing.mouseY;
            
        }
        
        public function start():void
        {
            //When the user click button this function start to run
            line.graphics.lineStyle(2, 0x00ffee);
            line.graphics.moveTo(stX, stY);
            addEventListener(Event.ENTER_FRAME, animation1);
            
        }
        
        public function animation1(evt:Event):void
        {
            var fromX:Number;
            var fromY:Number;
            
            var targetX:Number = getMouseX;
            var targetY:Number = getMouseY;
            
            var easing:Number = 0.2;
            var dy:Number;
            var dx:Number;
            var vx:Number;
            var vy:Number;

            fromX = stX;
            fromY = stY;
            
            dx = targetX - fromX;
            dy = targetY - fromY;
            
            vx = dx * easing;
            vy = dx * easing;
            
            stX += vx;
            stY += vy;
            
            line.graphics.lineTo(stX, stY);
            line.graphics.moveTo(fromX, fromY);
            
            canDrawing.rawChildren.addChild(line);
            
            lblX.text = dx.toString();
            lblY.text = dy.toString();


        }