package { import com.actionsnippet.qbox.QuickBox2D; import flash.display.Graphics; import flash.display.MovieClip; import flash.display.Shape; import flash.display.Sprite; import flash.events.Event; import flash.events.MouseEvent; /** * マウスドラッグで物体を作成。 * @author paq89 */ [SWF(backgroundColor="0xFFFFFF", width=465, height=465, frameRate=60)] public class Main extends Sprite { private var _qbox:QuickBox2D; private var _points:/*int*/Array private var _isMouseDown:Boolean; private var _dx:Number; private var _dy:Number; private var _line:Shape; public function Main():void { if (stage) init(); else addEventListener(Event.ADDED_TO_STAGE, init); } private function init(e:Event = null):void { removeEventListener(Event.ADDED_TO_STAGE, init); _points = []; _isMouseDown = false; _line = new Shape(); _line.graphics.lineStyle(1, 0); _qbox = new QuickBox2D(addChild(new MovieClip) as MovieClip); _qbox.createStageWalls(); _qbox.start(); addChild(_line); stage.addEventListener(MouseEvent.MOUSE_DOWN, onMouseDown); stage.addEventListener(MouseEvent.MOUSE_UP, onMouseUp); stage.addEventListener(MouseEvent.MOUSE_MOVE, onMouseMove); } private function onMouseDown(e:MouseEvent):void { _isMouseDown = true; _dx = mouseX; _dy = mouseY; _line.graphics.moveTo(mouseX, mouseY); } private function onMouseUp(e:MouseEvent):void { if (_points.length > 1) { var avgX:Number = 0; var avgY:Number = 0; var len:uint = _points.length; for (var i:uint = 0; i < len; i += 2) { avgX += _points[i]; avgY += _points[i + 1]; } avgX /= _points.length / 2; avgY /= _points.length / 2; for (i = 0; i < len; i += 2) { var yp:int = i + 1; _points[i] -= avgX; _points[yp] -= avgY; _points[i] = Number(_points[i].toFixed(2)); _points[yp] = Number(_points[yp].toFixed(2)); } try { _qbox.addPoly( { x:avgX, y:avgY, points:_points } ); } catch (e:*) { // } } _points = []; _isMouseDown = false; _line.graphics.clear(); _line.graphics.lineStyle(1, 0); } private function onMouseMove(e:MouseEvent):void { if (Math.abs(_dx - mouseX) > 5 && Math.abs(_dy - mouseY) > 5 && _isMouseDown) { _points.push(mouseX / 30.0, mouseY / 30.0); _dx = mouseX; _dy = mouseY; _line.graphics.lineTo(mouseX, mouseY); } } } }