package { import flash.display.Bitmap; import flash.display.BitmapData; import flash.display.Sprite; import flash.events.Event; import flash.events.MouseEvent; import flash.events.TimerEvent; import flash.geom.Matrix; import flash.geom.Point; import flash.utils.Timer; import frocessing.color.ColorHSV; [SWF(width=465, height=465, frameRate=60)] /** * Dumping Graphics * マウスクリックすると拡大するよ * @author yasu */ public class DumpingGraphics extends Sprite { private static const MAX:int = 10; private static const STAGE_W:int = 465; private static const STAGE_H:int = 465; public function DumpingGraphics() { addChild(bmp = new Bitmap(bmd = new BitmapData(STAGE_W * 2, STAGE_H * 2, true, 0xFF000000))); bmp.scaleX = bmp.scaleY = 1 / 2; for (var i:int = 0; i < MAX; i++) { addChild(canvas[ i ] = new Sprite); colors[ i ] = []; var j:int = 10; while (j--) { var color:ColorHSV = new ColorHSV(Math.random() * 30 + i * 15 + 180, Math.random(), 1); colors[ i ].push(color.value); } target[ i ] = new Point(STAGE_W * Math.random(), STAGE_H * Math.random()); stack[ i ] = []; vx[ i ] = 0; vy[ i ] = 0; nowX[ i ] = STAGE_W / 2; nowY[ i ] = STAGE_H / 2; timer[ i ] = new Timer(30 * i + 50); timer[ i ].addEventListener(TimerEvent.TIMER, tick); timer[ i ].start(); } captureMatrix.scale(2, 2); addEventListener(Event.ENTER_FRAME, loop); stage.addEventListener(MouseEvent.MOUSE_DOWN, _onDown); stage.addEventListener(MouseEvent.MOUSE_UP, _onUp); } private var ac:Number = 0.02; private var bmd:BitmapData; private var bmp:Bitmap; private var canvas:Vector.<Sprite> = new Vector.<Sprite>(MAX, true); private var captureMatrix:Matrix = new Matrix(); private var colors:Vector.<Array> = new Vector.<Array>(MAX, true); private var de:Number = 0.95; private var nowX:Vector.<Number> = new Vector.<Number>(MAX, true); private var nowY:Vector.<Number> = new Vector.<Number>(MAX, true); private var oldP:Point = new Point(STAGE_W / 2, STAGE_H / 2); private var speed:Number = 1; private var stack:Vector.<Array> = new Vector.<Array>(MAX, true); private var target:Vector.<Point> = new Vector.<Point>(MAX, true); private var timer:Vector.<Timer> = new Vector.<Timer>(MAX, true); private var vx:Vector.<Number> = new Vector.<Number>(MAX, true); private var vy:Vector.<Number> = new Vector.<Number>(MAX, true); private var zoom:Number = 1; private function _onDown(e:MouseEvent):void { zoom = 2; } private function _onUp(e:MouseEvent):void { zoom = 1; } private function loop(e:Event):void { bmd.lock(); for (var i:int = 0; i < MAX; i++) { var oldX:Number = nowX[ i ]; var oldY:Number = nowY[ i ]; //加速度運動 vx[ i ] += (target[ i ].x - nowX[ i ]) * ac; vy[ i ] += (target[ i ].y - nowY[ i ]) * ac; nowX[ i ] += vx[ i ]; nowY[ i ] += vy[ i ]; //減衰処理 vx[ i ] *= de; vy[ i ] *= de; stack[ i ].push([ nowX[ i ], nowY[ i ], oldX, oldY ]); if (stack[ i ].length > 10) stack[ i ].shift(); canvas[ i ].graphics.clear(); for (var j:int = 0; j < stack[ i ].length; j++) { var o:Array = stack[ i ][ j ]; var rand:Number = Math.random(); canvas[ i ].graphics.beginFill(colors[ i ][(colors.length * Math.random()) >> 0 ], 0.5 * rand); var r:Number = Math.sqrt((o[ 0 ] - o[ 2 ]) * (o[ 0 ] - o[ 2 ]) + (o[ 1 ] - o[ 3 ]) * (o[ 1 ] - o[ 3 ])) r *= 0.75; r *= rand * rand; canvas[ i ].graphics.drawCircle(o[ 0 ], o[ 1 ], r); } target[ i ].x += (STAGE_W / 2 - target[ i ].x) * ac; target[ i ].y += (STAGE_H / 2 - target[ i ].y) * ac; bmd.draw(canvas[ i ], captureMatrix); } bmd.unlock(); oldP.x += (target[ 0 ].x - oldP.x) * 0.05; oldP.y += (target[ 0 ].y - oldP.y) * 0.05; speed += (zoom - speed) * 0.1; var mt:Matrix = new Matrix(); mt.translate(-oldP.x, -oldP.y); mt.scale(speed, speed); mt.translate(oldP.x, oldP.y); this.transform.matrix = mt; } private function tick(e:TimerEvent):void { for (var i:int = 0; i < MAX; i++) { if (timer[ i ] == e.currentTarget) break; } target[ i ].x = mouseX; target[ i ].y = mouseY; } } }