Mouse distance with pythagorean theorem

by terravilor 01 Oct 2011

Embed

/**
 * Copyright terravilor ( http://wonderfl.net/user/terravilor )
 * MIT License ( http://www.opensource.org/licenses/mit-license.php )
 * Downloaded from: http://wonderfl.net/c/d9Kw
 */

package {
    import flash.text.TextField;
    import flash.text.TextFieldAutoSize;
    import flash.display.Sprite;
    import flash.events.Event;
    public class MouseDistance extends Sprite {
        private var sprSquare:Sprite;
        
        private var txtDebug:TextField;
        
        public function MouseDistance() {
            init();
        }
        
        public function init():void {
            sprSquare = new Sprite;
            sprSquare.graphics.beginFill(0xFF0000);
            sprSquare.graphics.drawRect(-2, -2, 4, 4);
            sprSquare.graphics.endFill();
            sprSquare.x = stage.stageWidth / 2;
            sprSquare.y = stage.stageHeight / 2;
            addChild(sprSquare);
            
            //debug
            txtDebug = new TextField();
            txtDebug.autoSize = TextFieldAutoSize.LEFT;
            addChild(txtDebug);
            
            addEventListener(Event.ENTER_FRAME, onMouseMove); //usando esse evento por causa do wonderfl
            //addEventListener(MouseEvent.MOUSE_MOVE, onMouseMove);
        }
        
        protected function onMouseMove(event:Event):void {
            txtDebug.text = "oi";
            graphics.clear();
            graphics.lineStyle(1, 0, 1);
            graphics.moveTo(sprSquare.x, sprSquare.y);
            graphics.lineTo(mouseX, mouseY);
            
            var dY:Number = sprSquare.y - mouseY;
            var dX:Number = sprSquare.x - mouseX;
            var dist:Number = Math.sqrt(dX * dX + dY * dY);
            txtDebug.text = dist.toString();
        }


    }
}