forked from: WaveEffect (2)
/**
* Copyright vijay7003 ( http://wonderfl.net/user/vijay7003 )
* MIT License ( http://www.opensource.org/licenses/mit-license.php )
* Downloaded from: http://wonderfl.net/c/3Yfi
*/
// forked from ProjectNya's WaveEffect (2)
////////////////////////////////////////////////////////////////////////////////
// WaveEffect (2)
//
// 置き換えマップ効果 (3)
// http://www.project-nya.jp/modules/weblog/details.php?blog_id=480
// BitmapDataでノイズ生成 (3)
// http://www.project-nya.jp/modules/weblog/details.php?blog_id=481
// [AS3.0] PerlinNoiseクラスに挑戦！
// http://www.project-nya.jp/modules/weblog/details.php?blog_id=1114
//
// 動作を軽くするための方法 (東京てらこ7 @trick7)
// Bitmap.filters を使わず、BitmapData.applyFilter() を用いる
////////////////////////////////////////////////////////////////////////////////
package {
import flash.display.Sprite;
import flash.display.StageScaleMode;
import flash.display.StageAlign;
import flash.events.Event;
import flash.geom.Rectangle;
import flash.geom.Matrix;
import flash.text.TextField;
import flash.text.TextFieldType;
import flash.text.TextFieldAutoSize;
import flash.text.AntiAliasType;
import flash.text.TextFormat;
import flash.text.TextFormatAlign;
[SWF(backgroundColor="#FFFFFF", width="465", height="465", frameRate="30")]
public class Main extends Sprite {
private var wave:WaveEffect;
private var txt:TextField;
private var matrix:Matrix;
public function Main() {
//Wonderfl.capture_delay(1);
init();
}
private function init():void {
var rect:Rectangle = new Rectangle(0, 0, 465, 232);
wave = new WaveEffect(rect);
addChild(wave);
txt = new TextField();
txt.y = 292;
addChild(txt);
txt.width = 465;
txt.height = 100;
txt.autoSize = TextFieldAutoSize.CENTER;
txt.type = TextFieldType.INPUT;
txt.selectable = true;
//txt.embedFonts = true;
//txt.antiAliasType = AntiAliasType.ADVANCED;
var tf:TextFormat = new TextFormat();
tf.font = "_ゴシック";
tf.size = 60;
tf.align = TextFormatAlign.CENTER;
txt.defaultTextFormat = tf;
txt.textColor = 0x000000;
txt.text = "WaveEffect";
txt.maxChars = 10;
txt.addEventListener(Event.CHANGE, change, false, 0, true);
matrix = new Matrix();
matrix.translate(0, 60);
wave.setup(txt, matrix);
wave.start();
}
private function change(evt:Event):void {
wave.setup(txt, matrix);
}
}
}
//////////////////////////////////////////////////
// WaveEffectクラス
//////////////////////////////////////////////////
import flash.display.Sprite;
import flash.display.DisplayObject;
import flash.events.Event;
import flash.display.BitmapData;
import flash.display.Bitmap;
import flash.geom.Rectangle;
import flash.geom.Point;
import flash.geom.Matrix;
import flash.events.Event;
import flash.filters.DisplacementMapFilter;
import flash.display.BitmapDataChannel;
import flash.filters.DisplacementMapFilterMode;
class WaveEffect extends Sprite {
private var rect:Rectangle;
private var noise:PerlinNoise;
private static var octaves:uint = 2;
private static var channel:uint = BitmapDataChannel.RED;
private var speeds:Array;
private var map:DisplacementMapFilter;
private var scale:Number = 10;
private var target:DisplayObject;
private var container:Bitmap;
private var bitmapData:BitmapData;
public static const COMPLETE:String = Event.COMPLETE;
public function WaveEffect(r:Rectangle) {
rect = r;
init();
}
// メソッド
private function init():void {
noise = new PerlinNoise(rect, 32, 32, octaves, false, channel);
speeds = new Array();
for (var n:uint = 0; n < octaves; n++) {
var sx:Number = (Math.random() - 0.5)*3;
var sy:Number = (Math.random() - 0.5)*3 + 2.5;
speeds.push(new Point(sx, sy));
}
map = new DisplacementMapFilter(noise, new Point(), channel, channel, scale, scale, DisplacementMapFilterMode.CLAMP);
bitmapData = new BitmapData(rect.width, rect.height, true, 0x00000000);
container = new Bitmap(bitmapData);
addChild(container);
}
public function setup(t:DisplayObject, matrix:Matrix = null):void {
target = t;
bitmapData.fillRect(rect, 0x00000000);
bitmapData.draw(target, matrix, null, null, null, true);
container.bitmapData = bitmapData.clone();
}
public function start():void {
addEventListener(Event.ENTER_FRAME, update, false, 0, true);
}
private function update(evt:Event):void {
noise.update(speeds);
container.bitmapData.lock();
container.bitmapData.applyFilter(bitmapData, bitmapData.rect, new Point(), map);
container.bitmapData.unlock();
}
}
//////////////////////////////////////////////////
// PerlinNoiseクラス
//////////////////////////////////////////////////
import flash.display.BitmapData;
import flash.geom.Rectangle;
import flash.geom.Point;
class PerlinNoise extends BitmapData {
private var bx:uint;
private var by:uint;
private var octaves:uint;
private var seed:uint;
private var stitch:Boolean = true;
private var fractalNoise:Boolean = true;
private var channel:uint = 0;
private var grayScale:Boolean = true;
private var offsets:Array = new Array();
public function PerlinNoise(rect:Rectangle, x:uint, y:uint, o:uint = 1, g:Boolean = true, c:uint = 0, s:uint = 1, st:Boolean = false, f:Boolean = true) {
super(rect.width, rect.height, false, 0xFF000000);
bx = x;
by = y;
octaves = o;
grayScale = g;
channel = c;
if (grayScale) channel = 0;
for (var n:uint = 0; n < octaves; n++) {
var point:Point = new Point();
offsets.push(point);
}
stitch = st;
fractalNoise = f;
create(s, offsets);
}
private function create(s:uint, o:Array = null):void {
seed = s;
offsets = o;
if (offsets == null) offsets = [new Point()];
lock();
perlinNoise(bx, by, octaves, seed, stitch, fractalNoise, channel, grayScale, offsets);
draw(this);
unlock();
}
public function update(speeds:Array):void {
for (var n:uint = 0; n < octaves; n++) {
var offset:Point = offsets[n];
var speed:Point = speeds[n];
offset.x += speed.x;
offset.y += speed.y;
}
lock();
perlinNoise(bx, by, octaves, seed, stitch, fractalNoise, channel, grayScale, offsets);
draw(this);
unlock();
}
}