Bitmapに描画して、フェードアウトする場合、フィルター使ったり、colorTranceform使ったりするんだけど、画面全体を処理しようとすると、どうしても重くなる。
じゃあ、画面全体じゃなくて100px四方ずつ処理したら、軽くていい効果が得られるんじゃないかと考えて作ってみた。
ちょっとサイバーな感じになるけど、アリかなと。
つぶつぶたくさん – wonderfl build flash online
画面としては以前作った↓とおなじような感じ。
http://www.mztm.jp/2012/09/15/colorname/
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package { import flash.display.Sprite; import flash.events.Event; /** * ... * @author umhr */ [SWF(width = 465, height = 465, backgroundColor = 0x000000, frameRate = 30)] public class WonderflMain extends Sprite { public function WonderflMain():void { if (stage) init(); else addEventListener(Event.ADDED_TO_STAGE, init); } private function init(e:Event = null):void { removeEventListener(Event.ADDED_TO_STAGE, init); // entry point addChild(new Canvas()); } } } import flash.display.Sprite; import flash.events.Event; /** * ... * @author umhr */ class Canvas extends Sprite { private var _viewCanvas:ViewCanvas = ViewCanvas.getInstance(); public function Canvas() { init(); } private function init():void { if (stage) onInit(); else addEventListener(Event.ADDED_TO_STAGE, onInit); } private function onInit(event:Event = null):void { removeEventListener(Event.ADDED_TO_STAGE, onInit); // entry point CameraManager.getInstance().addEventListener(Event.ACTIVATE, activate); addChild(CameraManager.getInstance()); addChild(_viewCanvas); } private function activate(e:Event):void { CameraManager.getInstance().removeEventListener(Event.ACTIVATE, activate); addEventListener(Event.ENTER_FRAME, enterFrame); } private function enterFrame(e:Event):void { _viewCanvas.enterFrame(); } } import flash.display.Bitmap; import flash.display.BitmapData; import flash.display.Sprite; import flash.events.Event; import flash.filters.BlurFilter; import flash.geom.ColorTransform; import flash.geom.Matrix; import flash.text.TextField; import flash.text.TextFormat; /** * ... * @author umhr */ class ViewCanvas extends Sprite { private static var _instance:ViewCanvas; public function ViewCanvas(block:Block){init();}; public static function getInstance():ViewCanvas{ if ( _instance == null ) {_instance = new ViewCanvas(new Block());}; return _instance; } private var _bitmap:Bitmap; private var _blurBitmap:Bitmap = new Bitmap(new BitmapData(100, 100, true, 0xFFFFFFFF)); private const FADE:ColorTransform = new ColorTransform(1.1, 1.1, 1.1, 1); //private const FADE:ColorTransform = new ColorTransform(1, 1, 1, 1); private var _cameraManager:CameraManager = CameraManager.getInstance(); private function init():void { if (stage) onInit(); else addEventListener(Event.ADDED_TO_STAGE, onInit); } private function onInit(event:Event = null):void { removeEventListener(Event.ADDED_TO_STAGE, onInit); // entry point _bitmap = new Bitmap(new BitmapData(stage.stageWidth, stage.stageHeight, false, 0xFF000000)); addChild(_bitmap); //_blurBitmap.filters = [new BlurFilter(1,1)]; } public function enterFrame(e:Event = null):void { setBlur(); setBlur(); //setBlur(); //setBlur(); _cameraManager.enter(); drawTextSet(); } private function setBlur():void { var tx:int = Math.random() * 465 - 50; var ty:int = Math.random() * 465 - 50; _blurBitmap.bitmapData.fillRect(_blurBitmap.bitmapData.rect, 0x00000000); _blurBitmap.bitmapData.draw(_bitmap, new Matrix(1, 0, 0, 1, -tx, -ty)); _bitmap.bitmapData.draw(_blurBitmap, new Matrix(1, 0, 0, 1, tx, ty), FADE); } private function drawTextSet():void { var tx:int; var ty:int; var n:int = 100; for (var i:int = 0; i < n; i++) { tx = 465 * Math.random(); ty = 465 * Math.random(); drawText(tx, ty); } } private var _charctor:Bitmap; private function drawText(tx:int,ty:int):void { var rgb:int = _cameraManager.getPixel(tx, ty); if (_charctor) { var scale:Number = Math.random()*0.8 + 0.1; _bitmap.bitmapData.draw(_charctor, new Matrix(scale, 0, 0, scale, tx-8, ty-8),Utils.colorFromRGB(rgb),null,null,true); }else { var textField:TextField = new TextField(); textField.defaultTextFormat = new TextFormat(null, 24, 0x000000); textField.text = "●"; textField.wordWrap = textField.multiline = true; textField.selectable = false; textField.width = 30; textField.height = 30; _charctor = new Bitmap(new BitmapData(30, 30, true, 0x0)); _charctor.bitmapData.draw(textField); } } } class Block { }; import flash.display.BitmapData; import flash.display.IBitmapDrawable; import flash.display.Sprite; import flash.events.ActivityEvent; import flash.events.Event; import flash.media.Camera; import flash.media.Video; /** * ... * @author umhr */ class CameraManager extends Sprite { private static var _instance:CameraManager; public function CameraManager(block:Block){init();} public static function getInstance():CameraManager{ if ( _instance == null ) {_instance = new CameraManager(new Block());}; return _instance; } private var _video:Video = new Video(); private var _bitmapData:BitmapData; private var _scale:Number = 1; public var activating:Boolean = false; private var _count:uint = 0; private var _dx:Number = 0; private var _dy:Number = 0; private function init():void { if (stage) onInit(); else addEventListener(Event.ADDED_TO_STAGE, onInit); } private function onInit(event:Event = null):void { removeEventListener(Event.ADDED_TO_STAGE, onInit); // entry point var camera:Camera = Camera.getCamera(); //カメラの存在を確認 if (camera) { camera.setMode(320, 240, 15); camera.addEventListener(ActivityEvent.ACTIVITY, camera_activity); _video.attachCamera(camera); _scale = Math.min(320 / stage.stageWidth, 240 / stage.stageHeight); _dx = (320 - stage.stageWidth * _scale) * 0.5; _dy = (240 - stage.stageHeight * _scale) * 0.5; _bitmapData = new BitmapData(320, 240); dispatchEvent(new Event(Event.ACTIVATE)); } else { trace("カメラが見つかりませんでした。"); } } private function camera_activity(event:ActivityEvent):void { activating = true; } /** * カメラで取得した結果を_bitmapDataに保持する。 */ public function enter():void { if (!activating) { return }; if (_count % 4 == 0) { _bitmapData.draw(_video); } _count ++; } public function getVideo():Video { return _video; } /** * 対応する座標の色を返す。 * @param x * @param y * @return */ public function getPixel(x:int, y:int):int { if (!activating) { return 0x0 }; var tx:int = x * _scale + _dx; var ty:int = y * _scale + _dy; return _bitmapData.getPixel(tx, ty); } } import flash.geom.ColorTransform; //Dump import flash.utils.getQualifiedClassName; //zSort import flash.display.DisplayObjectContainer; import flash.geom.PerspectiveProjection; import flash.geom.Point; import flash.geom.Vector3D; import flash.geom.Matrix; class Utils { public function Utils():void { }; /** * フィールドカラーに変色します. * 6桁16進数から、2桁ぶんずつを取り出す。 * 色情報は24bit。r8bit+g8bit+b8bit。24桁の二進数 * @param rgb * @param ratio * @return */ static public function colorFromRGB(rgb:int, ratio:Number = 1):ColorTransform { //ratioが1以外の場合、明度変更関数へ if(ratio != 1){rgb = rgbBrightness(rgb,ratio)}; var color:ColorTransform = new ColorTransform(); color.redMultiplier = color.blueMultiplier = color.greenMultiplier = 0; color.redOffset = rgb >> 16;//16bit右にずらす。 color.greenOffset = rgb >> 8 & 0xff;//8bit右にずらして、下位8bitのみを取り出す。 color.blueOffset = rgb & 0xff;//下位8bitのみを取り出す。 return color; } /* 色の明度を相対的に変える関数。 rgb値と割合を与えて、結果を返す。 rgbは、0xffffff段階の値。 ratioが0の時に0x000000に、1の時にそのまま、2の時には0xffffffになる。 相対的に、ちょっと暗くしたい時には、ratioを0.8に、 ちょっと明るくしたい時にはratioを1.2などに設定する。 */ static public function rgbBrightness(rgb:int,ratio:Number):int{ if(ratio < 0 || 2 < ratio){ratio = 1;trace("function colorBrightness 範囲外")} var _r:int = rgb >> 16;//16bit右にずらす。 var _g:int = rgb >> 8 & 0xff;//8bit右にずらして、下位8bitのみを取り出す。 var _b:int = rgb & 0xff;//下位8bitのみを取り出す。 if(ratio <= 1){ _r *= ratio; _g *= ratio; _b *= ratio; }else{ _r = (255 - _r)*(ratio-1)+_r; _g = (255 - _g)*(ratio-1)+_g; _b = (255 - _b)*(ratio-1)+_b; } return _r<<16 | _g<<8 | _b; } //shuffle static public function shuffle(num:int):Array { var _array:Array = new Array(); for (var i:int = 0; i < num; i++) { _array[i] = Math.random(); } return _array.sort(Array.RETURNINDEXEDARRAY); } //Dump static public function dump(obj:Object, isTrace:Boolean = true):String { var str:String = returnDump(obj) if (isTrace) { trace(str); } return str; } static public function returnDump(obj:Object):String { var str:String = _dump(obj); if (str.length == 0) { str = String(obj); }else if (getQualifiedClassName(obj) == "Array") { str = "[\n" + str.slice( 0, -2 ) + "\n]"; }else { str = "{\n" + str.slice( 0, -2 ) + "\n}"; } return str; } static public function traceDump(obj:Object):void { trace(returnDump(obj)); } //zSort static private function _dump(obj:Object, indent:int = 0):String { var result:String = ""; var da:String = (getQualifiedClassName(obj) == "Array")?'':'"'; var tab:String = ""; for ( var i:int = 0; i < indent; ++i ) { tab += " "; } for (var key:String in obj) { if (typeof obj[key] == "object") { var type:String = getQualifiedClassName(obj[key]); if (type == "Object" || type == "Array") { result += tab + da + key + da + ":"+((type == "Array")?"[":"{"); var dump_str:String = _dump(obj[key], indent + 1); if (dump_str.length > 0) { result += "\n" + dump_str.slice(0, -2) + "\n"; result += tab; } result += (type == "Array")?"],\n":"},\n"; }else { result += tab + '"' + key + '":<' + type + ">,\n"; } }else if (typeof obj[key] == "function") { result += tab + '"' + key + '":<Function>,\n'; }else { var dd:String = (typeof obj[key] == "string")?"'":""; result += tab + da + key + da + ":" + dd + obj[key] +dd + ",\n"; } } return result; } static public function zSort(target:DisplayObjectContainer, generation:int = 2):void { if(generation == 0 || !target.root){return}; var n:int = target.numChildren; var array:Array = []; var reference:Array = []; for (var i:int = 0; i < n; i++) { if (target.getChildAt(i).transform.matrix3D) { var poz:Vector3D = target.getChildAt(i).transform.getRelativeMatrix3D(target.root.stage).position; var point:Point = target.root.stage.transform.perspectiveProjection.projectionCenter; array[i] = poz.subtract(new Vector3D(point.x, point.y, -target.root.stage.transform.perspectiveProjection.focalLength)).length; reference[i] = target.getChildAt(i); } } var temp:Array = array.sort(Array.NUMERIC | Array.RETURNINDEXEDARRAY); for (i = 0; i < n; i++) { if (target.getChildAt(i).transform.matrix3D) { target.setChildIndex(reference[temp[i]],0); if(reference[temp[i]].numChildren > 1){ zSort(reference[temp[i]], generation - 1); } } } //return; for (i = 0; i < n; i++) { if (target.getChildAt(i).transform.matrix3D) { target.getChildAt(i).visible = (target.getChildAt(i).transform.getRelativeMatrix3D(target.root.stage).position.z > -400); } } } } |
