package { import flash.display.Sprite; import flash.events.MouseEvent; import flash.display.CapsStyle; import flash.display.LineScaleMode; public class FlashTest extends Sprite { private var jackson:Sprite; private var prevX:int; private var prevY:int; private var startPosX:int; private var startPosY:int; private var disX:Number; private var disY:Number; private var color:uint; public function FlashTest() { jackson = addChild(new Sprite()) as Sprite; stage.addEventListener(MouseEvent.MOUSE_MOVE, _move); stage.addEventListener(MouseEvent.MOUSE_DOWN,_down) jackson .doubleClickEnabled = true; stage.addEventListener(MouseEvent.DOUBLE_CLICK,onMouseDoubleClick) } private function onMouseDoubleClick(e:MouseEvent):void{ jackson.graphics.clear(); } private function _down(e:MouseEvent):void { color = Math.random() * 0xFFFFFF; } private function _move(e:MouseEvent):void { var distance:Number = Math.sqrt(Math.pow(prevX - startPosX, 2) + Math.pow(prevY - startPosY, 2)) var a:Number = distance * 10 * (Math.pow(Math.random(), 2) - 0.5) var r:Number = Math.random() - 0.5 var size:Number = Math.random() * 15 / distance disX = (prevX - startPosX) * Math.sin(0.5) + startPosX; disY = (prevY - startPosY) * Math.cos(0.5) + startPosY; startPosX = prevX; startPosY = prevY; prevX = mouseX prevY = mouseY jackson.graphics.moveTo(startPosX, startPosY); jackson.graphics.curveTo(disX,disY,prevX,prevY) jackson.graphics.lineStyle(((Math.random()+20/10-0.5)*size+(1-Math.random()+30/20-0.5)*size), color,1, false, LineScaleMode.NONE, CapsStyle.ROUND); jackson.graphics.moveTo(startPosX + a, startPosY + a); jackson.graphics.lineTo(startPosX+r+a, startPosY+r+a); jackson.graphics.endFill(); } } }