var mBody = $('#post-448 div.storycontent')[0];
var iW = 50;
var iH = 50;
var t;
var s;
var mCanvas;
var oContext;
var aPixels;
var fScl;
var i,j,ii;
var x,y,xx,yy;
var mUl,mLi,mP,mBut,N;
var iTestRuns = 10;
var fDff;
//
//
//
mUl = addChild(mBody,'ul');
mUl.setAttribute('id','noisess');
//
//
//
var aNfo = [
	{
		 title: "classic"
		,fnc: Perlin
		,animate: 0
	},{
		 title: "simplex:"
		,fnc: PerlinSimplex
		,animate: 0
	}
];
var zz = Math.random()*100;
var P;
var fNoise;
for (j=0;j<aNfo.length;j++) {
	var oNfo = aNfo[j]
	//
	P = oNfo.fnc;
	//
	t = millis();
	mLi = addChild(mUl,'li');
	mCanvas = addChild(mLi,'canvas');
	mCanvas.height = iW;
	mCanvas.width = iH;
	//
	oContext = mCanvas.getContext("2d")
	oImgData = oContext.getImageData(0,0,iW,iH);
	aPixels = oImgData.data;
	//
	//
	oNfo.context = oContext;
	oNfo.image = oImgData;
	oNfo.pixels = aPixels;
	//
	for (k=0;k<iTestRuns;k++)  {

		//
		////
		//////
		Prng.seed = 282;
		P.setRng(Prng);
		P.noiseDetail(3,.5);
		fScl = .0422;
		//////
		////
		//

		if (k===0) trace(P);

		for (i = 0; i < aPixels.length; i += 4) {
			ii = Math.floor(i/4);
			x = ii%iW;
			y = Math.floor(ii/iW);
			xx = 0+x*fScl;
			yy = 0+y*fScl;
			fNoise = Math.floor(P.noise(xx,yy,zz)*256);
			aPixels[i] = aPixels[i+1] = aPixels[i+2] = fNoise;
			aPixels[i+3] = 255;
		}
		oContext.putImageData(oImgData, 0, 0)
	}
	var sNfo = '<h4>'+oNfo.title+'</h4>';
	sNfo += '<p>speed: <strong id="spd'+j+'">'+Math.round((millis()-t)/iTestRuns)+'</strong></p>';
	sNfo += '</ul>';
	N = addChild(mLi,'div');
	N.innerHTML = sNfo;
	//
	oNfo.speed = document.getElementById('spd'+j);
	//
	mBut = addChild(mLi,'input');
	mBut.setAttribute("type","button");
	mBut.setAttribute("value","play");
	var halper = function(o,i) {
		return function(e) {
			var bPaused = o.animate===0;
			e.currentTarget.setAttribute("value",bPaused?"stop":"play");
			if (bPaused) {
				o.animate = setInterval(function(){run(i);},1);
			} else {
				clearInterval(o.animate);
				o.animate = 0;
			}
		}
	}
	mBut.addEventListener("click",halper(oNfo,j),false);
}
//
//
//
//
//
var fDeltaT = 0;
var fLastTime = 0;
setInterval(function(){
	fDeltaT = millis()-fLastTime
	fLastTime = millis();
},1);
//
//
//
//
//
var fTime = 0;
var fBaseSpeed = .0001;
var fSpeed = fBaseSpeed;
var iNoiseType = 0;
var run = function run(j) {
	var oNfo = aNfo[j]
	P = oNfo.fnc;
	oContext = oNfo.context;
	oImgData = oNfo.image;
	aPixels = oNfo.pixels;
	//
	fTime += fDeltaT*fSpeed;
	zz = fTime;//millis()*fSpeed;
	//
	t = millis();
	for (i = 0; i < aPixels.length; i += 4) {
		ii = Math.floor(i/4);
		x = ii%iW;
		y = Math.floor(ii/iW);
		fDff = j==0?1.5:1;
		xx = 0+x*fScl*fDff;
		yy = 0+y*fScl*fDff;
		switch (iNoiseType) {
			case 0: fNoise = Math.floor(P.noise(xx,yy,zz)*256); break; // normal
			case 1: fNoise = P.noise(xx,yy,zz)>.5?0:256; break; // bw
			case 2: fNoise = ((P.noise(xx,yy,zz)*8)%2)<1?0:256; break; // bwbwbw
			case 3: fNoise = P.noise(xx,yy,zz)*1024%256; break; // repeat
			case 4: fNoise = Math.abs(P.noise(xx,yy,zz)-.5)*4096; break; // lines
			case 5: fNoise = 256-Math.floor(Math.pow(P.noise(xx,yy,zz)*4,y)); break; // mud
			case 6: fNoise = Math.floor(P.noise(3*xx,yy-2*zz,zz)*256); break; // falling
			case 7:
				var fXDff = x-.5*iW;
				var fYDff = y-.5*iH;
				var fDst = Math.sqrt(fXDff*fXDff+fYDff*fYDff)/iW;
				fNoise = Math.floor(fDst*fDst*(P.noise(xx,yy,zz)-.2)*4096);
			break; // falling
		}
		aPixels[i] = aPixels[i+1] = aPixels[i+2] = fNoise;
		aPixels[i+3] = 255;
	}
	oNfo.speed.innerText = millis()-t;
	oContext.putImageData(oImgData, 0, 0)
}
//
//
addChild(mBody,'br').setAttribute('style','clear:both;')
//
//
var aSpeeds = ["slower","normal","faster"];
for (i=0;i<aSpeeds.length;i++) {
	mBut = addChild(mBody,'input');
	mBut.setAttribute("type","button");
	mBut.setAttribute("value",aSpeeds[i]);
	var helper = function(i) {
		return function(e) {
			var iK = 2;
			switch (i) {
				case 0: fSpeed /= iK; break;
				case 1: fSpeed = fBaseSpeed; break;
				case 2: fSpeed *= iK; break;
			}
		}
	}
	mBut.addEventListener("click",helper(i),false);
}
//
//
addChild(mBody,'br');
//
//
var aPerlinTypes = ["normal","b/w","b/w+","repeat","lines","mud","falling","smoke"];
for (i=0;i<aPerlinTypes.length;i++) {
	mBut = addChild(mBody,'input');
	mBut.setAttribute("type","button");
	mBut.setAttribute("value",aPerlinTypes[i]);
	var helper = function(i) {
		return function(e) {
			iNoiseType = i;
			for (j=0;j<aNfo.length;j++) {
				if (aNfo[j].animate===0) {
					run(j);
				}
			}
		}
	}
	mBut.addEventListener("click",helper(i),false);
}