DisplacementMapFilter + PerlinNoise
//////////////////////////////////////////////////////////////////////////////
DisplacementMapFilter + PerlinNoise
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
//////////////////////////////////////////////////////////////////////////////
/**
* Copyright ProjectNya ( http://wonderfl.net/user/ProjectNya )
* MIT License ( http://www.opensource.org/licenses/mit-license.php )
* Downloaded from: http://wonderfl.net/c/eOxv
*/
////////////////////////////////////////////////////////////////////////////////
// DisplacementMapFilter + PerlinNoise
//
// 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
////////////////////////////////////////////////////////////////////////////////
package {
import flash.display.Sprite;
import flash.display.StageScaleMode;
import flash.display.StageAlign;
import flash.display.Bitmap;
import flash.geom.Rectangle;
import flash.geom.Point;
import flash.events.Event;
import flash.filters.DisplacementMapFilter;
import flash.display.BitmapDataChannel;
import flash.filters.DisplacementMapFilterMode;
[SWF(backgroundColor="#000000", width="465", height="465", frameRate="30")]
public class Main extends Sprite {
private var loader:PhotoLoader;
private var basePath:String = "http://www.project-nya.jp/images/flash/piyo.png";
private var map:DisplacementMapFilter;
private static var color:uint = BitmapDataChannel.RED;
private var scale:Number = 10;
private var noise:PerlinNoise;
private var speeds:Array;
public function Main() {
//Wonderfl.capture_delay(1);
init();
}
private function init():void {
graphics.beginFill(0x000000);
graphics.drawRect(0, 0, 465, 465);
graphics.endFill();
var rect:Rectangle = new Rectangle(0, 0, 400, 400);
var octaves:uint = 2;
//ノイズ生成
noise = new PerlinNoise(rect, 32, 32, octaves, false, color);
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(), color, color, scale, scale, DisplacementMapFilterMode.CLAMP);
loader = new PhotoLoader();
loader.addEventListener(Event.INIT, initialize, false, 0, true);
addChild(loader);
loader.x = 32;
loader.y = 32;
loader.load(basePath, true);
}
private function initialize(evt:Event):void {
addEventListener(Event.ENTER_FRAME, update, false, 0, true);
}
private function update(evt:Event):void {
//ノイズ生成
noise.update(speeds);
//フィルタ適用
loader.filters = [map];
}
}
}
//////////////////////////////////////////////////
// PhotoLoaderクラス
//////////////////////////////////////////////////
import flash.display.Sprite;
import flash.display.Loader;
import flash.display.LoaderInfo;
import flash.net.URLRequest;
import flash.events.Event;
import flash.events.IOErrorEvent;
import flash.events.HTTPStatusEvent;
import flash.events.SecurityErrorEvent;
import flash.display.Bitmap;
import flash.system.LoaderContext;
class PhotoLoader extends Sprite {
private var loader:Loader;
private var info:LoaderInfo;
public var content:Bitmap;
private var smoothing:Boolean;
public static const IO_ERROR:String = IOErrorEvent.IO_ERROR;
public static const HTTP_STATUS:String = HTTPStatusEvent.HTTP_STATUS;
public static const SECURITY_ERROR:String = SecurityErrorEvent.SECURITY_ERROR;
public static const INIT:String = Event.INIT;
public static const COMPLETE:String = Event.COMPLETE;
public function PhotoLoader() {
loader = new Loader();
info = loader.contentLoaderInfo;
}
public function load(file:String, s:Boolean = false):void {
smoothing = s;
info.addEventListener(IOErrorEvent.IO_ERROR, ioerror, false, 0, true);
info.addEventListener(HTTPStatusEvent.HTTP_STATUS, httpstatus, false, 0, true);
info.addEventListener(SecurityErrorEvent.SECURITY_ERROR, securityerror, false, 0, true);
info.addEventListener(Event.INIT, initialize, false, 0, true);
info.addEventListener(Event.COMPLETE, complete, false, 0, true);
try {
loader.load(new URLRequest(file), new LoaderContext(true));
} catch (err:Error) {
trace(err.message);
}
}
public function unload():void {
loader.unload();
}
private function ioerror(evt:IOErrorEvent):void {
loader.unload();
dispatchEvent(new Event(PhotoLoader.IO_ERROR));
}
private function httpstatus(evt:HTTPStatusEvent):void {
dispatchEvent(new Event(PhotoLoader.HTTP_STATUS));
}
private function securityerror(evt:SecurityErrorEvent):void {
dispatchEvent(new Event(PhotoLoader.SECURITY_ERROR));
}
private function initialize(evt:Event):void {
content = Bitmap(info.content);
if (smoothing) content.smoothing = true;
dispatchEvent(new Event(PhotoLoader.INIT));
}
private function complete(evt:Event):void {
info.removeEventListener(IOErrorEvent.IO_ERROR, ioerror);
info.removeEventListener(HTTPStatusEvent.HTTP_STATUS, httpstatus);
info.removeEventListener(SecurityErrorEvent.SECURITY_ERROR, securityerror);
info.removeEventListener(Event.INIT, initialize);
info.removeEventListener(Event.COMPLETE, complete);
addChild(loader);
dispatchEvent(new Event(PhotoLoader.COMPLETE));
}
}
//////////////////////////////////////////////////
// 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();
}
}