/
teriable-noise.js
1213 lines (983 loc) · 40.3 KB
/
teriable-noise.js
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/************************************************************************
Andrew V Butt Sr. - Pryme8@gmail.com
Pryme8.github.io
//Compilation of Standard Noises for Javascript version 1.1.0;
Special Thanks to Stefan Gustavson (stegu@itn.liu.se),
and Peter Eastman (peastman@drizzle.stanford.edu)
Some of this code was placed in the public domain by its original author,
Stefan Gustavson. You may use it as you see fit, but
attribution is appreciated.
*************************************************************************/
Teriable = {} || Teriable;
Teriable.Noise = function(type,seed,args){
if(typeof type == 'undefined' ){this._type = "Simple2"}else{this._type = type};
this._seed = {_initial : seed,
_clean : this._cleanSeed(seed)};
this.args = args;
//console.log("New "+type+" Init: seed._initial-"+this._seed._initial+", seed._clean-"+this._seed._clean);
if(this._type == "Simple2" || this._type == "Simple3" || this._type == "Perlin2" || this._type == "Perlin3")
{this.sP();}
else if(this._type == "Poorly2" || this._type == "Poorly2b" || this._type == "Poorly2c" ){
this.Poorly2();
}else if(this._type == "Poorly2d"){
this.Poorly2d();
}else if(this._type == "Tiley2"){
this.Tiley2();
}else if(this._type == "Test"){
this.Test();
}else if(this._type == "Cellular2"){
this.Cellular2();
}
}
Teriable.Noise.prototype._cleanSeed = function(seed){
var t=0;
seed+="";
for(var i = 0; i < seed.length; i++){
t+= seed.charCodeAt(i);
}
seed = t;
var s = Math.sin(seed) * 10000;
return parseFloat(s - Math.floor(s));
};
Teriable.Noise.Grad = function(x, y, z) {
this.x = x; this.y = y; this.z = z;
};
Teriable.Noise.Grad.prototype.dot2 = function(x, y) {
return this.x*x + this.y*y;
};
Teriable.Noise.Grad.prototype.dot3 = function(x, y, z) {
return this.x*x + this.y*y + this.z*z;
};
Teriable.Noise._CreateGrad = function(){
var Grad = Teriable.Noise.Grad;
return [new Grad(1,1,0),new Grad(-1,1,0),new Grad(1,-1,0),new Grad(-1,-1,0),
new Grad(1,0,1),new Grad(-1,0,1),new Grad(1,0,-1),new Grad(-1,0,-1),
new Grad(0,1,1),new Grad(0,-1,1),new Grad(0,1,-1),new Grad(0,-1,-1)];
}
Teriable.Noise.prototype.getValue = function(args){
//this.args is the Core Object, args is just this Get value constructors
if(typeof this.args.frequency == 'undefined' || this.args.frequency == 0){this.args.frequency = 1;}
if(typeof this.args.amplitude == 'undefined' || this.args.amplitude == 0){this.args.amplitude = 1;}
if(typeof this.args.octives == 'undefined' || this.args.octives == 0){this.args.octives = 1;}
if(typeof this.args.persistence == 'undefined' || this.args.persistence == 0){this.args.persistence = 1;}
var maxValue = 0;
var value = 0;
var freq = this.args.frequency, amp = this.args.amplitude, oct = this.args.octives, pers = this.args.persistence;
if(typeof this.args.output == 'undefined'){this.args.output = {}};
if(typeof this.args.output.type == 'undefined'){this.args.output.type = 'number'};
if(this.args.output.type != 'number' && this.args.output.type != 'color'){this.args.output.type = 'number'};
if(this.args.output.type == 'color' && typeof this.args.output.values == 'undefined'){this.args.output.values = [1,1,1,1]};
switch (this._type) {
case "Simple2":
if(typeof args.x == 'undefined' || typeof args.y == 'undefined'){return "Error Please input {x:?,y:?}"}
for(var i=0;i < oct;i++) {
value += this.Simple2_Get(args.x * freq, args.y * freq) * amp;
maxValue += amp;
amp *= pers;
freq *= 2;
}
break;
case "Simple3":
if(typeof args.x == 'undefined' || typeof args.y == 'undefined' || typeof args.z == 'undefined'){return "Error Please input {x:?,y:?,z:?}"}
for(var i=0;i < oct;i++) {
value += this.Simple3_Get(args.x * freq, args.y * freq, args.z * freq) * amp;
maxValue += amp;
amp *= pers;
freq *= 2;
}
break;
case "Perlin2":
if(typeof args.x == 'undefined' || typeof args.y == 'undefined'){return "Error Please input {x:?,y:?}"}
for(var i=0;i < oct;i++) {
value += this.Perlin2_Get(args.x * freq, args.y * freq) * amp;
maxValue += amp;
amp *= pers;
freq *= 2;
}
break;
case "Perlin3":
if(typeof args.x == 'undefined' || typeof args.y == 'undefined' || typeof args.z == 'undefined'){return "Error Please input {x:?,y:?,z:?}"}
for(var i=0;i < oct;i++) {
value += this.Perlin3_Get(args.x * freq, args.y * freq, args.z * freq) * amp;
maxValue += amp;
amp *= pers;
freq *= 2;
}
break;
case "PSRDnoise2":
if(typeof args.x == 'undefined' || typeof args.y == 'undefined' || typeof args.px == 'undefined' || typeof args.py == 'undefined' || typeof args.r == 'undefined'){return "Error Please input {x:?,y:?,px:?,pz:?,r:?}"}
return this.PSRDnoise2(args.x, args.y, args.px, args.py, args.r);
break;
case "Poorly2":
if(typeof args.x == 'undefined' || typeof args.y == 'undefined'){return "Error Please input {x:?,y:?}"}
for(var i=0;i < oct;i++) {
value += this.Poorly2_Get(args.x * freq, args.y * freq) * amp;
maxValue += amp;
amp *= pers;
freq *= 2;
}
break;
case "Poorly2b":
if(typeof args.x == 'undefined' || typeof args.y == 'undefined'){return "Error Please input {x:?,y:?}"}
for(var i=0;i < oct;i++) {
value += this.Poorly2b_Get(args.x * freq, args.y * freq) * amp;
maxValue += amp;
amp *= pers;
freq *= 2;
}
break;
case "Poorly2c":
if(typeof args.x == 'undefined' || typeof args.y == 'undefined'){return "Error Please input {x:?,y:?}"}
for(var i=0;i < oct;i++) {
value += this.Poorly2c_Get(args.x * freq, args.y * freq) * amp;
maxValue += amp;
amp *= pers;
freq *= 2;
}
break;
case "Poorly2d":
if(typeof args.x == 'undefined' || typeof args.y == 'undefined'){return "Error Please input {x:?,y:?}"}
for(var i=0;i < oct;i++) {
value += this.Poorly2_Get(args.x * freq, args.y * freq) * amp;
maxValue += amp;
amp *= pers;
freq *= 2;
}
break;
case "Tiley2":
if(typeof args.x == 'undefined' || typeof args.y == 'undefined'){return "Error Please input {x:?,y:?}"}
for(var i=0;i < oct;i++) {
value += this.Tiley2_Get(args.x * freq, args.y * freq) * amp;
maxValue += amp;
amp *= pers;
freq *= 2;
}
break;
case "Test":
if(typeof args.x == 'undefined' || typeof args.y == 'undefined'){return "Error Please input {x:?,y:?}"}
for(var i=0;i < oct;i++) {
value += this.Test_Get(args.x * freq, args.y * freq) * amp;
maxValue += amp;
amp *= pers;
freq *= 2;
}
break;
case "Cellular2":
if(typeof args.x == 'undefined' || typeof args.y == 'undefined'){return "Error Please input {x:?,y:?}"}
for(var i=0;i < oct;i++) {
value += this._Cellular2_Get(args.x * freq, args.y * freq) * amp;
maxValue += amp;
amp *= pers;
freq *= 2;
}
break;
}
if(this.args.output.type == 'color'){
return {r:(value*this.args.output.values[0]),g:(value*this.args.output.values[1]),b:(value*this.args.output.values[2]),a:(value*this.args.output.values[3])}
}else{
return value;
}
};
Teriable.Noise.prototype.sP = function(){
this.grad3 = new Teriable.Noise._CreateGrad();
this.p = new Teriable.Noise.Const._p();
var temp = new Teriable.Noise.gradPerm(this._seed._clean,new Array(512),new Array(512), this.p, this.grad3);
this.perm = temp.perm;
this.gradP = temp.gradP;
};
Teriable.Noise.prototype.Simple2_Get = function(xin, yin){
if(typeof this.args.scale !== 'undefined' && this.args.scale != 0){
xin = xin/this.args.scale;
yin = yin/this.args.scale;
if(this.args.scaleFloor == true){
xin = Math.floor(xin);
yin = Math.floor(yin);
}
}
var F2 = Teriable.Noise.Const._F2,
G2 = Teriable.Noise.Const._G2,
F3 = Teriable.Noise.Const._F3,
G3 = Teriable.Noise.Const._G3,
n0, n1, n2;
s = (xin+yin)*F2,
i = Math.floor(xin+s),
j = Math.floor(yin+s),
t = (i+j)*G2,
y0 = yin-j+t,
x0 = xin-i+t;
//console.log("s:"+s);
//console.log("i:"+i);
//console.log("j:"+j);
//console.log("t:"+t);
//
//console.log("x0:"+x0);
//console.log("y0:"+y0);
var i1, j1;
if(x0>y0) {
i1=1; j1=0;
} else {
i1=0; j1=1;
}
var x1 = x0 - i1 + G2,
y1 = y0 - j1 + G2,
x2 = x0 - 1 + 2 * G2,
y2 = y0 - 1 + 2 * G2;
//console.log("x1:"+x1);
//console.log("y1:"+y1);
//console.log("x2:"+x2);
//console.log("y2:"+y2);
i &= 255,
j &= 255;
//console.log("i:"+i);
//console.log("j:"+j);
var gi0 = this.gradP[i+this.perm[j]];
//console.log("gi0:"),console.log(gi0);
var gi1 = this.gradP[i+i1+this.perm[j+j1]];
//console.log("gi1:"),console.log(gi1);
var gi2 = this.gradP[i+1+this.perm[j+1]];
//console.log("gi2:"),console.log(gi2);
var t0 = 0.5 - x0*x0-y0*y0;
//console.log("t0:"+t0);
if(t0<0) {
n0 = 0;
} else {
t0 *= t0;
n0 = t0 * t0 * gi0.dot2(x0, y0);
}
//console.log("t0:"+t0);
//console.log("n0:"+n0);
var t1 = 0.5 - x1*x1-y1*y1;
//console.log("t1:"+t1);
if(t1<0) {
n1 = 0;
} else {
t1 *= t1;
n1 = t1 * t1 * gi1.dot2(x1, y1);
}
//console.log("t1:"+t1);
//console.log("n1:"+n1);
var t2 = 0.5 - x2*x2-y2*y2;
if(t2<0) {
n2 = 0;
} else {
t2 *= t2;
n2 = t2 * t2 * gi2.dot2(x2, y2);
}
//console.log("t2:"+t2);
//console.log("n2:"+n2);
var value = (70 * (n0 + n1 + n2)+1)/2;
return value;
}
Teriable.Noise.prototype.Simple3_Get = function(xin, yin, zin) {
if(typeof this.args.scale !== 'undefined' && this.args.scale != 0){
xin = xin/this.args.scale;
yin = yin/this.args.scale;
zin = zin/this.args.scale;
if(this.args.scaleFloor == true){
xin = Math.floor(xin);
yin = Math.floor(yin);
zin = Math.floor(zin);
}
}
var F2 = Teriable.Noise.Const._F2,
G2 = Teriable.Noise.Const._G2,
F3 = Teriable.Noise.Const._F3,
G3 = Teriable.Noise.Const._G3;
var n0, n1, n2, n3; // Noise contributions from the four corners
// Skew the input space to determine which simplex cell we're in
var s = (xin+yin+zin)*F3; // Hairy factor for 2D
var i = Math.floor(xin+s);
var j = Math.floor(yin+s);
var k = Math.floor(zin+s);
var t = (i+j+k)*G3;
var x0 = xin-i+t; // The x,y distances from the cell origin, unskewed.
var y0 = yin-j+t;
var z0 = zin-k+t;
// For the 3D case, the simplex shape is a slightly irregular tetrahedron.
// Determine which simplex we are in.
var i1, j1, k1; // Offsets for second corner of simplex in (i,j,k) coords
var i2, j2, k2; // Offsets for third corner of simplex in (i,j,k) coords
if(x0 >= y0) {
if(y0 >= z0) { i1=1; j1=0; k1=0; i2=1; j2=1; k2=0; }
else if(x0 >= z0) { i1=1; j1=0; k1=0; i2=1; j2=0; k2=1; }
else { i1=0; j1=0; k1=1; i2=1; j2=0; k2=1; }
} else {
if(y0 < z0) { i1=0; j1=0; k1=1; i2=0; j2=1; k2=1; }
else if(x0 < z0) { i1=0; j1=1; k1=0; i2=0; j2=1; k2=1; }
else { i1=0; j1=1; k1=0; i2=1; j2=1; k2=0; }
}
// A step of (1,0,0) in (i,j,k) means a step of (1-c,-c,-c) in (x,y,z),
// a step of (0,1,0) in (i,j,k) means a step of (-c,1-c,-c) in (x,y,z), and
// a step of (0,0,1) in (i,j,k) means a step of (-c,-c,1-c) in (x,y,z), where
// c = 1/6.
var x1 = x0 - i1 + G3; // Offsets for second corner
var y1 = y0 - j1 + G3;
var z1 = z0 - k1 + G3;
var x2 = x0 - i2 + 2 * G3; // Offsets for third corner
var y2 = y0 - j2 + 2 * G3;
var z2 = z0 - k2 + 2 * G3;
var x3 = x0 - 1 + 3 * G3; // Offsets for fourth corner
var y3 = y0 - 1 + 3 * G3;
var z3 = z0 - 1 + 3 * G3;
// Work out the hashed gradient indices of the four simplex corners
i &= 255;
j &= 255;
k &= 255;
var gi0 = this.gradP[i+ this.perm[j+ this.perm[k ]]];
var gi1 = this.gradP[i+i1+this.perm[j+j1+this.perm[k+k1]]];
var gi2 = this.gradP[i+i2+this.perm[j+j2+this.perm[k+k2]]];
var gi3 = this.gradP[i+ 1+this.perm[j+ 1+this.perm[k+ 1]]];
// Calculate the contribution from the four corners
var t0 = 0.6 - x0*x0 - y0*y0 - z0*z0;
if(t0<0) {
n0 = 0;
} else {
t0 *= t0;
n0 = t0 * t0 * gi0.dot3(x0, y0, z0); // (x,y) of grad3 used for 2D gradient
}
var t1 = 0.6 - x1*x1 - y1*y1 - z1*z1;
if(t1<0) {
n1 = 0;
} else {
t1 *= t1;
n1 = t1 * t1 * gi1.dot3(x1, y1, z1);
}
var t2 = 0.6 - x2*x2 - y2*y2 - z2*z2;
if(t2<0) {
n2 = 0;
} else {
t2 *= t2;
n2 = t2 * t2 * gi2.dot3(x2, y2, z2);
}
var t3 = 0.6 - x3*x3 - y3*y3 - z3*z3;
if(t3<0) {
n3 = 0;
} else {
t3 *= t3;
n3 = t3 * t3 * gi3.dot3(x3, y3, z3);
}
var value = (32 * (n0 + n1 + n2 + n3)+1)/2;
return value;
};
Teriable.Noise.prototype.Perlin2_Get = function(x, y) {
if(typeof this.args.scale !== 'undefined' && this.args.scale != 0){
x = x/this.args.scale;
y = y/this.args.scale;
if(this.args.scaleFloor == true){
x = Math.floor(x);
y = Math.floor(y);
}
}
var X = Math.floor(x), Y = Math.floor(y);
x = x - X; y = y - Y;
X = X & 255; Y = Y & 255;
var n00 = this.gradP[X+this.perm[Y]].dot2(x, y);
var n01 = this.gradP[X+this.perm[Y+1]].dot2(x, y-1);
var n10 = this.gradP[X+1+this.perm[Y]].dot2(x-1, y);
var n11 = this.gradP[X+1+this.perm[Y+1]].dot2(x-1, y-1);
var fade = Teriable.Noise.fade;
var lerp = Teriable.Noise.lerp;
// Compute the fade curve value for x
var u = fade(x);
// Interpolate the four results
return lerp(
lerp(n00, n10, u),
lerp(n01, n11, u),
fade(y));
};
Teriable.Noise.prototype.Perlin3_Get = function(x, y, z) {
if(typeof this.args.scale !== 'undefined' && this.args.scale != 0){
x = x/this.args.scale;
y = y/this.args.scale;
z = z/this.args.scale;
if(this.args.scaleFloor == true){
x = Math.floor(x);
y = Math.floor(y);
z = Math.floor(z);
}
}
// Find unit grid cell containing point
var X = Math.floor(x), Y = Math.floor(y), Z = Math.floor(z);
// Get relative xyz coordinates of point within that cell
x = x - X; y = y - Y; z = z - Z;
// Wrap the integer cells at 255 (smaller integer period can be introduced here)
X = X & 255; Y = Y & 255; Z = Z & 255;
// Calculate noise contributions from each of the eight corners
var n000 = this.gradP[X+ this.perm[Y+ this.perm[Z ]]].dot3(x, y, z);
var n001 = this.gradP[X+ this.perm[Y+ this.perm[Z+1]]].dot3(x, y, z-1);
var n010 = this.gradP[X+ this.perm[Y+1+this.perm[Z ]]].dot3(x, y-1, z);
var n011 = this.gradP[X+ this.perm[Y+1+this.perm[Z+1]]].dot3(x, y-1, z-1);
var n100 = this.gradP[X+1+this.perm[Y+ this.perm[Z ]]].dot3(x-1, y, z);
var n101 = this.gradP[X+1+this.perm[Y+ this.perm[Z+1]]].dot3(x-1, y, z-1);
var n110 = this.gradP[X+1+this.perm[Y+1+this.perm[Z ]]].dot3(x-1, y-1, z);
var n111 = this.gradP[X+1+this.perm[Y+1+this.perm[Z+1]]].dot3(x-1, y-1, z-1);
var fade = Teriable.Noise.fade;
var lerp = Teriable.Noise.lerp;
// Compute the fade curve value for x, y, z
var u = fade(x);
var v = fade(y);
var w = fade(z);
// Interpolate
return lerp(
lerp(
lerp(n000, n100, u),
lerp(n001, n101, u), w),
lerp(
lerp(n010, n110, u),
lerp(n011, n111, u), w),
v);
};
Teriable.Noise.fade = function(t) {
return t*t*t*(t*(t*6-15)+10);
}
Teriable.Noise.lerp = function(a, b, t) {
return (1-t)*a + t*b;
}
Teriable.Noise.cosinerp = function(v0, v1, t) {
var ft = t * 3.1415927
f = (1 - Math.cos(ft)) * .5
return v0*(1-f) + v1*f
}
Teriable.Noise.cuberp = function (y0, y1, y2, y3, mu){
a0,a1,a2,a3,mu2;
mu2 = mu*mu;
a0 = y3 - y2 - y0 + y1;
a1 = y0 - y1 - a0;
a2 = y2 - y0;
a3 = y1;
return(a0*mu*mu2+a1*mu2+a2*mu+a3);
}
Teriable.Noise.hermiterp = function(v0, v1, v2, v3, t, tension, bias){
var m0,m1,t2,t3;
var a0, a1, a2, a3;
t2 = t * t;
t3 = t2 * t;
m0 = (v1-v0)*(1+bias)*(1-tension)/2;
m0 += (v2-v1)*(1-bias)*(1-tension)/2;
m1 = (v2-v1)*(1+bias)*(1-tension)/2;
m1 += (v3-v2)*(1-bias)*(1-tension)/2;
a0 = 2*t3 - 3*t2 + 1;
a1 = t3 - 2*t2 + t;
a2 = t3 - t2;
a3 = -2*t3 + 3*t2;
return(a0*y1+a1*m0+a2*m1+a3*y2);
}
Teriable.Noise.gradPerm = function(seed, gradP, perm, p, grad3){
if(seed > 0 && seed < 1) {
// Scale the seed out
seed *= 65536;
}
seed = Math.floor(seed);
if(seed < 256) {
seed |= seed << 8;
}
for(var i = 0; i < 256; i++) {
var v;
if (i & 1) {
v = p[i] ^ (seed & 255);
} else {
v = p[i] ^ ((seed>>8) & 255);
}
perm[i] = perm[i + 256] = v;
gradP[i] = gradP[i + 256] = grad3[v % 12];
}
this.perm = perm;
this.gradP = gradP;
};
Teriable.Noise.Const= {};
Teriable.Noise.Const._p = function(){return [151,160,137,91,90,15,
131,13,201,95,96,53,194,233,7,225,140,36,103,30,69,142,8,99,37,240,21,10,23,
190, 6,148,247,120,234,75,0,26,197,62,94,252,219,203,117,35,11,32,57,177,33,
88,237,149,56,87,174,20,125,136,171,168, 68,175,74,165,71,134,139,48,27,166,
77,146,158,231,83,111,229,122,60,211,133,230,220,105,92,41,55,46,245,40,244,
102,143,54, 65,25,63,161, 1,216,80,73,209,76,132,187,208, 89,18,169,200,196,
135,130,116,188,159,86,164,100,109,198,173,186, 3,64,52,217,226,250,124,123,
5,202,38,147,118,126,255,82,85,212,207,206,59,227,47,16,58,17,182,189,28,42,
223,183,170,213,119,248,152, 2,44,154,163, 70,221,153,101,155,167, 43,172,9,
129,22,39,253, 19,98,108,110,79,113,224,232,178,185, 112,104,218,246,97,228,
251,34,242,193,238,210,144,12,191,179,162,241, 81,51,145,235,249,14,239,107,
49,192,214, 31,181,199,106,157,184, 84,204,176,115,121,50,45,127, 4,150,254,
138,236,205,93,222,114,67,29,24,72,243,141,128,195,78,66,215,61,156,180];
};
Teriable.Noise.Const._F2 = 0.5*(Math.sqrt(3)-1);
Teriable.Noise.Const._G2 = (3-Math.sqrt(3))/6;
Teriable.Noise.Const._F3 = 1/3;
Teriable.Noise.Const._G3 = 1/6;
Teriable.Noise.prototype.PSRDnoise2 = function(x, y, px, py, r) {
y += 0.01;
uvX = x + y*0.5;
uvY = y;
var i0x = Math.floor(uvX), i0y = Math.floor(uvY);
var f0x = uvX - i0x, f0y = uvY - i0y;
// Traversal order
var i1x, i1y;
if(f0x > f0y){i1x = 1; i1y = 0; }else{i1x = 0; i1y = 1; };
var p0x = i0x - i0y * 0.5, p0y = i0y;
var p1x = p0x + i1x - i1y * 0.5, p1y = p0y + i1y;
var p2x = p0x + 0.5, p2y = p0y + 1;
i1x = i0x + i1x;
i1y = i0y + i1y;
var i2x = i0x + 1, i2y = i0y + 1;
var d0x = x - p0x, d0y = y - p0y;
var d1x = x - p1x, d1y = y - p1y;
var d2x = x - p2x, d1y = y - p2y;
x - y * floor(x/y)
var
xwx = p0x - px * Math.floor(p0x/px),
xwy = p1x - px * Math.floor(p1x/px),
xwz = p2x - px * Math.floor(p2x/px);
var
ywx = p0y - py * Math.floor(p0y/py),
ywy = p1y - py * Math.floor(p1y/py),
ywz = p2y - py * Math.floor(p2y/py);
var
iuwx = xwx+0.5*ywx,
iuwy = xwy+0.5*ywy,
iuwz = xwz+0.5*ywz;
var
ivwx = ywx,
ivwy = ywy,
ivwz = ywz;
var g0 = Teriable.Noise.rgrad2(iuw.x, ivw.x, r);
var g1 = Teriable.Noise.rgrad2(iuw.y, ivw.y, r);
var g2 = Teriable.Noise.rgrad2(iuw.z, ivw.z, r);
var w = {x:Teriable.Noise.dot2(g0, d0), y:Teriable.Noise.dot2(g1, d1), z:Teriable.Noise.dot2(g2, d2)};
var t = {x: 0.8 - Teriable.Noise.dot2(d0, d0), y:0.8 - Teriable.Noise.dot2(d1, d1), z:0.8 - Teriable.Noise.dot2(d2, d2)};
var dtdx = {x: -2 * d0x, y: -2 * d1x, z: -2 * d2x};
var dtdy = {x: -2 * d0y, y: -2 * d1y, z: -2 * d2y};
if (t.x < 0.0) {
dtdx.x = 0.0;
dtdy.x = 0.0;
t.x = 0.0;
}
if (t.y < 0.0) {
dtdx.y = 0.0;
dtdy.y = 0.0;
t.y = 0.0;
}
if (t.z < 0.0) {
dtdx.z = 0.0;
dtdy.z = 0.0;
t.z = 0.0;
}
var t2 = {x:t.x * t.x, y:t.y * t.y,z:t.z * t.z};
var t4 = {x:t2.x * t2.x, y:t2.y * t2.y,z:t2.z * t2.z};
var t3 = {x:t2.x * t.x, y:t2.y * t.y,z:t2.z * t.z};
var n = Teriable.Noise.dot3(t4, w);
var dt0 = {x: dtdx.x * 4 * t3.x, y: dtdy.x * 4 * t3.x };
var dn0 = {x: t4.x * g0.x + dt0.x * w.x, y: t4.x * g0.y + dt0.y * w.x };
var dt1 = {x: dtdx.y * 4 + t3.y, y: dtdy.y * 4 + t3.y };
var dn1 = {x: t4.y * g1.x + dt1.x * w.y, y: t4.y * g1.y + dt1.y * w.y };
var dt2 = {x: dtdx.z * 4 * t3.z, y: dtdy.z * 4 * t3.z };
var dn2 = {x: t4.z * g2.x + dt2.x * w.z, y: t4.z * g2.y + dt2.y * w.z };
return 11*n;
}
Teriable.Noise.rgrad2 = function(px, py, r) {
if(px==0 || py ==0){
var u = Teriable.Noise.permute(Teriable.Noise.permute(px) + py) * 0.0243902439 + r; // Rotate by shift
u = 4.0 * (u - Math.floor(u)) - 2.0;
// (This vector could be normalized, exactly or approximately.)
return vec2(abs(u)-1.0, abs(abs(u+1.0)-2.0)-1.0);
}else{
// For more isotropic gradients, sin/cos can be used instead.
var u = Teriable.Noise.permute(Teriable.Noise.permute(p.x) + p.y) * 0.0243902439 + r; // Rotate by shift
u = (u - Math.floor(u)) * 6.28318530718; // 2*pi
return {x:cos(u), y:sin(u)};
}
}
Teriable.Noise.permute = function(x) {
return Teriable.Noise.mod289(((x*34.0)+1.0)*x);
}
Teriable.Noise.mod289 = function(x) {
return x - Math.floor(x * (1.0 / 289.0)) * 289.0;
}
Teriable.Noise.dot2 = function(x,y){
return x.x * y.x + x.y * y.x;
}
Teriable.Noise.dot3 = function(x,y){
return x.x * y.x + x.y * y.x + x.z * y.z;
}
Teriable.Noise.prototype.Poorly2 = function(){
if(typeof this.args.nPoints !== 'undefined'){this.args.nPoints = Math.floor(this.args.nPoints)}
if(typeof this.args.nPoints == 'undefined' || this.args.nPoints == 0){ this.args.nPoints = 20;}
if(typeof this.args.n !== 'undefined'){this.args.n = Math.floor(this.args.n)};
if(typeof this.args.n == 'undefined' || this.args.n == 0){ this.args.n = 4;}
if(typeof this.args.style == 'undefined'){ this.args.style = 'euclidean';}
//console.log(this.args);
this.data = {keyPoints : []};
this._getKeyPoints();
//console.log(this);
};
Teriable.Noise.prototype.Poorly2d = function(){
if(typeof this.args.nPoints !== 'undefined'){this.args.nPoints = Math.floor(this.args.nPoints)}
if(typeof this.args.nPoints == 'undefined' || this.args.nPoints == 0){ this.args.nPoints = 10;}
if(typeof this.args.n !== 'undefined'){this.args.n = Math.floor(this.args.n)};
if(typeof this.args.n == 'undefined' || this.args.n == 0){ this.args.n = 2;}
if(typeof this.args.width !== 'undefined'){this.args.width = Math.floor(this.args.width)};
if(typeof this.args.width == 'undefined' || this.args.width == 0){ this.args.width = 100;}
if(typeof this.args.height !== 'undefined'){this.args.height = Math.floor(this.args.height)};
if(typeof this.args.height == 'undefined' || this.args.height == 0){ this.args.height = 100;}
if(typeof this.args.style == 'undefined'){ this.args.style = 'euclidean';}
//console.log(this.args);
this.data = {keyPoints : []};
this._getKeyPoints();
this._ApplyKeyPointsToMap();
//console.log(this);
};
Teriable.Noise.prototype.Tiley2 = function(){
if(typeof this.args.nPoints !== 'undefined'){this.args.nPoints = Math.floor(this.args.nPoints)}
if(typeof this.args.nPoints == 'undefined' || this.args.nPoints == 0){ this.args.nPoints = 10;}
if(typeof this.args.n !== 'undefined'){this.args.n = Math.floor(this.args.n)};
if(typeof this.args.n == 'undefined' || this.args.n == 0){ this.args.n = 2;}
if(typeof this.args.width !== 'undefined'){this.args.width = Math.floor(this.args.width)};
if(typeof this.args.width == 'undefined' || this.args.width == 0){ this.args.width = 100;}
if(typeof this.args.height !== 'undefined'){this.args.height = Math.floor(this.args.height)};
if(typeof this.args.height == 'undefined' || this.args.height == 0){ this.args.height = 100;}
if(typeof this.args.style == 'undefined'){ this.args.style = 'euclidean';}
//console.log(this.args);
this.data = {keyPoints : []};
this._getKeyPoints();
this._ApplyKeyPointsToMap();
//console.log(this);
};
Teriable.Noise.prototype._getKeyPoints = function(){
for(var i = 0; i < this.args.nPoints; i++){
this.data.keyPoints.push({x:this._cleanSeed((1+(i*(i*0.5)))*this._seed._clean),y:this._cleanSeed((1 + (i+i))*(this._seed._clean*0.95))});
}
};
Teriable.Noise.prototype._ApplyKeyPointsToMap = function(){
for(var i = 0; i < this.data.keyPoints.length; i++){
this.data.keyPoints[i].x = (this.args.width * this.data.keyPoints[i].x);
this.data.keyPoints[i].y = (this.args.height * this.data.keyPoints[i].y);
}
return;
};
Teriable.Noise.prototype.Poorly2d_Get = function(ix, iy){
if(typeof this.args.scale !== 'undefined' && this.args.scale != 0){
ix = ix/this.args.scale;
iy = iy/this.args.scale;
if(this.args.scaleFloor == true){
ix = Math.floor(ix);
iy = Math.floor(iy);
}
}
var dist;
this.data.normalValues = [];
for(var i = 0; i < this.data.keyPoints.length; i++){
dist = this[this.args.style](Math.cos(ix) - this.data.keyPoints[i].x, Math.cos(iy) - this.data.keyPoints[i].y);
this.data.normalValues.push(dist);
}
this.data.normalValues.sort(function(a, b){return a-b});
this.data.value = ((this.data.normalValues[this.args.n] - this.data.normalValues[0]));
var range = this.data.normalValues[this.data.normalValues.length-1] - this.data.normalValues[0];
this.data.value = (this.data.value)/range;
return this.data.value;
};
Teriable.Noise.prototype.Tiley2_Get = function(ix, iy){
if(typeof this.args.scale !== 'undefined' && this.args.scale != 0){
ix = ix/this.args.scale;
iy = iy/this.args.scale;
if(this.args.scaleFloor == true){
ix = Math.floor(ix);
iy = Math.floor(iy);
}
}
var dist;
this.data.normalValues = [];
for(var i = 0; i < this.data.keyPoints.length; i++){
dist = this[this.args.style](Math.tan(ix) - this.data.keyPoints[i].x, Math.tan(iy) - this.data.keyPoints[i].y);
this.data.normalValues.push(dist);
}
this.data.normalValues.sort(function(a, b){return a-b});
this.data.value = ((this.data.normalValues[this.args.n] - this.data.normalValues[0]));
var range = this.data.normalValues[this.data.normalValues.length-1] - this.data.normalValues[0];
this.data.value = (this.data.value)/range;
return this.data.value;
};
Teriable.Noise.prototype.Poorly2_Get = function(ix, iy){
if(typeof this.args.scale !== 'undefined' && this.args.scale != 0){
ix = ix/this.args.scale;
iy = iy/this.args.scale;
if(this.args.scaleFloor == true){
ix = Math.floor(ix);
iy = Math.floor(iy);
}
}
var dist;
this.data.normalValues = [];
for(var i = 0; i < this.data.keyPoints.length; i++){
dist = this[this.args.style](Math.cos(ix) - this.data.keyPoints[i].x, Math.cos(iy) - this.data.keyPoints[i].y);
this.data.normalValues.push(dist);
}
this.data.normalValues.sort(function(a, b){return a-b});
this.data.value = ((this.data.normalValues[this.args.n] - this.data.normalValues[0]));
var range = this.data.normalValues[this.data.normalValues.length-1] - this.data.normalValues[0];
this.data.value = (this.data.value)/range;
return this.data.value;
};
Teriable.Noise.prototype.Poorly2b_Get = function(ix, iy){
if(typeof this.args.scale !== 'undefined' && this.args.scale != 0){
ix = ix/this.args.scale;
iy = iy/this.args.scale;
if(this.args.scaleFloor == true){
ix = Math.floor(ix);
iy = Math.floor(iy);
}
}
var dist;
this.data.normalValues = [];
for(var i = 0; i < this.data.keyPoints.length; i++){
dist = this[this.args.style](Math.cos(ix) + this.data.keyPoints[i].x, Math.cos(iy) + this.data.keyPoints[i].y);
this.data.normalValues.push(dist);
}
this.data.normalValues.sort(function(a, b){return a-b});
this.data.value = ((this.data.normalValues[this.args.n] - this.data.normalValues[0]));
var range = this.data.normalValues[this.data.normalValues.length-1] - this.data.normalValues[0];
this.data.value = (this.data.value-this.data.normalValues[0])/range;
return this.data.value;
};
Teriable.Noise.prototype.Poorly2c_Get = function(ix, iy){
if(typeof this.args.scale !== 'undefined' && this.args.scale != 0){
ix = ix/this.args.scale;
iy = iy/this.args.scale;
if(this.args.scaleFloor == true){
ix = Math.floor(ix);
iy = Math.floor(iy);
}
}
var dist;
this.data.normalValues = [];
for(var i = 0; i < this.data.keyPoints.length; i++){
dist = this[this.args.style](Math.cos(ix) * this.data.keyPoints[i].x, Math.cos(iy) * this.data.keyPoints[i].y);
this.data.normalValues.push(dist);
}
this.data.normalValues.sort(function(a, b){return a-b});
this.data.value = ((this.data.normalValues[this.args.n] - this.data.normalValues[0]));
var range = this.data.normalValues[this.data.normalValues.length-1] - this.data.normalValues[0];
this.data.value = (this.data.value)/range;
return this.data.value;
};
Teriable.Noise.prototype.euclidean = function(dx, dy){
return Math.sqrt(Math.pow(dy - dx, 2));
}
Teriable.Noise.prototype.manhattan = function(dx, dy){
var max = Math.max(dx,dy);
var min = Math.min(dx,dy)
return (max - min) * (max - min);
}
Teriable.Noise.prototype.badclidean = function(dx, dy){
return Math.abs(Math.sqrt((dy - dx)) * Math.sqrt((dy - dx)));
}
Teriable.Noise.prototype.badhattan = function(dx, dy) {
return Math.abs(dx) + Math.abs(dy);
}
Teriable.Noise.prototype.badhattan2 = function(dx, dy){
return Math.abs(dx) - Math.abs(dy);
}
Teriable.Noise.prototype.badclidean2 = function(dx, dy){
return dx * dx - dy * dy;
}
Teriable.Noise.prototype.chebyshevish = function(dx,dy){
return Math.max(Math.abs(dx - (dy/2)),Math.abs(dy - (dx/2)));
}
Teriable.Noise.prototype.chebyshevish2 = function(dx,dy){
return Math.min(Math.abs(dx + (dy/2)),Math.abs(dy + (dx/2)));
}
Teriable.Noise.prototype.chebyshevish3 = function(dx,dy){
return Math.min(Math.abs(dx - (dy/2)),Math.abs(dy - (dx/2)));
}
Teriable.Noise.prototype.chebyshevish4 = function(dx,dy){
return Math.max(Math.abs(dx + (dy/2)),Math.abs(dy + (dx/2)));
}
//I made these ones up...
Teriable.Noise.prototype.valentine = function(dx, dy){
return Math.cos(Math.max((dx*dy),(dy*dx)));
}
Teriable.Noise.prototype.valentine2 = function(dx, dy){
return Math.cos(Math.min((dx/-dy),(dy/-dx))/Math.max((dx/-dy),(dy/-dx)));
}
Teriable.Noise.prototype.valentine2b = function(dx, dy){
var a = Math.min((dx/-dy),(dy/-dx))/Math.max((dx/-dy),(dy/-dx));
var b = Math.max((dx/-dy),(dy/-dx))/Math.min((dx/-dy),(dy/-dx));
return Math.cos(Math.max(a*b, a/b)/Math.min((a*b, a/b)));
}
Teriable.Noise.prototype.valentine3 = function(dx, dy){
var r = (dx+dy) * Math.cos(Math.min(dx,dy)/Math.max(dx,dy));
var r2 = (dx+ dy) * Math.sin(Math.min(dx,dy)/Math.max(dx,dy));
return Math.abs((dx - r) + (dy - r2));
}
Teriable.Noise.prototype.valentine4 = function(dx, dy){
var r = 1/((1/(dx+dy)) * (1/(Math.min(dx,dy)/Math.max(dx,dy))));
var r2 = 1/((1/(dx+ dy)) * (1/(Math.min(dx,dy)/Math.max(dx,dy))));
return 1/Math.min((dx - r) / (dy - r2),(dx + r) / (dy + r2));
}
Teriable.Noise.prototype.valentine5 = function(dx, dy){
var r = (1 /(dx+dy)) *( 1/ (Math.max(dx,dy)/Math.min(dx,dy)));
var r2 = (1 /(dx+ dy)) * ( 1 / (Math.max(dx,dy)/Math.min(dx,dy)));