diff --git a/public/script.js b/public/script.js
index 141dd2e..d37c205 100755
--- a/public/script.js
+++ b/public/script.js
@@ -1,8 +1,6 @@
 (function () {
   "use strict";
 
-  // braille
-
   const enc = (x) =>
     ((x & 0x08) << 3) | ((x & 0x70) >> 1) | (x & 0x87) | 0x2800;
   const row = (x) => String.fromCharCode(...Array.from(x, enc));
@@ -15,15 +13,11 @@
 
   const render = (table) => table.map(row).join("\n");
 
-  // util
-
   const frame = () => new Promise((resolve) => requestAnimationFrame(resolve));
 
   const element = (name, options) =>
     Object.assign(document.createElement(name), options);
 
-  // bayer
-
   const bayer = (order, x, y) => {
     let z = 0;
     for (let i = order; i--; x >>= 1, y >>= 1)
@@ -41,8 +35,6 @@
     return (x, y) => lut[(x % size) + (y % size) * size];
   };
 
-  // render
-
   const simplex = new SimplexNoise();
   const bayer4 = lut(4);
 
@@ -67,8 +59,6 @@
     return t > bayer4(x, y);
   };
 
-  // main
-
   const main = async () => {
     const fillerSize = 100;
     const filler =
@@ -110,5 +100,4 @@
   };
 
   main();
-})();
-
+})();
\ No newline at end of file
diff --git a/public/simplex.js b/public/simplex.js
index ebd35de..cf7a671 100644
--- a/public/simplex.js
+++ b/public/simplex.js
@@ -1,473 +1,461 @@
-/*
- * A fast javascript implementation of simplex noise by Jonas Wagner
+(function () {
+  "use strict";
 
-Based on a speed-improved simplex noise algorithm for 2D, 3D and 4D in Java.
-Which is based on example code by Stefan Gustavson (stegu@itn.liu.se).
-With Optimisations by Peter Eastman (peastman@drizzle.stanford.edu).
-Better rank ordering method by Stefan Gustavson in 2012.
+  var F2 = 0.5 * (Math.sqrt(3.0) - 1.0);
+  var G2 = (3.0 - Math.sqrt(3.0)) / 6.0;
+  var F3 = 1.0 / 3.0;
+  var G3 = 1.0 / 6.0;
+  var F4 = (Math.sqrt(5.0) - 1.0) / 4.0;
+  var G4 = (5.0 - Math.sqrt(5.0)) / 20.0;
 
-
- Copyright (c) 2018 Jonas Wagner
-
- Permission is hereby granted, free of charge, to any person obtaining a copy
- of this software and associated documentation files (the "Software"), to deal
- in the Software without restriction, including without limitation the rights
- to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
- copies of the Software, and to permit persons to whom the Software is
- furnished to do so, subject to the following conditions:
-
- The above copyright notice and this permission notice shall be included in all
- copies or substantial portions of the Software.
-
- THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
- AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
- OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
- SOFTWARE.
- */
- (function() {
-    'use strict';
-  
-    var F2 = 0.5 * (Math.sqrt(3.0) - 1.0);
-    var G2 = (3.0 - Math.sqrt(3.0)) / 6.0;
-    var F3 = 1.0 / 3.0;
-    var G3 = 1.0 / 6.0;
-    var F4 = (Math.sqrt(5.0) - 1.0) / 4.0;
-    var G4 = (5.0 - Math.sqrt(5.0)) / 20.0;
-  
-    function SimplexNoise(randomOrSeed) {
-      var random;
-      if (typeof randomOrSeed == 'function') {
-        random = randomOrSeed;
-      }
-      else if (randomOrSeed) {
-        random = alea(randomOrSeed);
-      } else {
-        random = Math.random;
-      }
-      this.p = buildPermutationTable(random);
-      this.perm = new Uint8Array(512);
-      this.permMod12 = new Uint8Array(512);
-      for (var i = 0; i < 512; i++) {
-        this.perm[i] = this.p[i & 255];
-        this.permMod12[i] = this.perm[i] % 12;
-      }
-  
+  function SimplexNoise(randomOrSeed) {
+    var random;
+    if (typeof randomOrSeed == "function") {
+      random = randomOrSeed;
+    } else if (randomOrSeed) {
+      random = alea(randomOrSeed);
+    } else {
+      random = Math.random;
     }
-    SimplexNoise.prototype = {
-      grad3: new Float32Array([1, 1, 0,
-        -1, 1, 0,
-        1, -1, 0,
-  
-        -1, -1, 0,
-        1, 0, 1,
-        -1, 0, 1,
-  
-        1, 0, -1,
-        -1, 0, -1,
-        0, 1, 1,
-  
-        0, -1, 1,
-        0, 1, -1,
-        0, -1, -1]),
-      grad4: new Float32Array([0, 1, 1, 1, 0, 1, 1, -1, 0, 1, -1, 1, 0, 1, -1, -1,
-        0, -1, 1, 1, 0, -1, 1, -1, 0, -1, -1, 1, 0, -1, -1, -1,
-        1, 0, 1, 1, 1, 0, 1, -1, 1, 0, -1, 1, 1, 0, -1, -1,
-        -1, 0, 1, 1, -1, 0, 1, -1, -1, 0, -1, 1, -1, 0, -1, -1,
-        1, 1, 0, 1, 1, 1, 0, -1, 1, -1, 0, 1, 1, -1, 0, -1,
-        -1, 1, 0, 1, -1, 1, 0, -1, -1, -1, 0, 1, -1, -1, 0, -1,
-        1, 1, 1, 0, 1, 1, -1, 0, 1, -1, 1, 0, 1, -1, -1, 0,
-        -1, 1, 1, 0, -1, 1, -1, 0, -1, -1, 1, 0, -1, -1, -1, 0]),
-      noise2D: function(xin, yin) {
-        var permMod12 = this.permMod12;
-        var perm = this.perm;
-        var grad3 = this.grad3;
-        var n0 = 0; // Noise contributions from the three corners
-        var n1 = 0;
-        var n2 = 0;
-        // Skew the input space to determine which simplex cell we're in
-        var s = (xin + yin) * F2; // Hairy factor for 2D
-        var i = Math.floor(xin + s);
-        var j = Math.floor(yin + s);
-        var t = (i + j) * G2;
-        var X0 = i - t; // Unskew the cell origin back to (x,y) space
-        var Y0 = j - t;
-        var x0 = xin - X0; // The x,y distances from the cell origin
-        var y0 = yin - Y0;
-        // For the 2D case, the simplex shape is an equilateral triangle.
-        // Determine which simplex we are in.
-        var i1, j1; // Offsets for second (middle) corner of simplex in (i,j) coords
-        if (x0 > y0) {
+    this.p = buildPermutationTable(random);
+    this.perm = new Uint8Array(512);
+    this.permMod12 = new Uint8Array(512);
+    for (var i = 0; i < 512; i++) {
+      this.perm[i] = this.p[i & 255];
+      this.permMod12[i] = this.perm[i] % 12;
+    }
+  }
+  SimplexNoise.prototype = {
+    grad3: new Float32Array([
+      1, 1, 0, -1, 1, 0, 1, -1, 0,
+
+      -1, -1, 0, 1, 0, 1, -1, 0, 1,
+
+      1, 0, -1, -1, 0, -1, 0, 1, 1,
+
+      0, -1, 1, 0, 1, -1, 0, -1, -1,
+    ]),
+    grad4: new Float32Array([
+      0, 1, 1, 1, 0, 1, 1, -1, 0, 1, -1, 1, 0, 1, -1, -1, 0, -1, 1, 1, 0, -1, 1,
+      -1, 0, -1, -1, 1, 0, -1, -1, -1, 1, 0, 1, 1, 1, 0, 1, -1, 1, 0, -1, 1, 1,
+      0, -1, -1, -1, 0, 1, 1, -1, 0, 1, -1, -1, 0, -1, 1, -1, 0, -1, -1, 1, 1,
+      0, 1, 1, 1, 0, -1, 1, -1, 0, 1, 1, -1, 0, -1, -1, 1, 0, 1, -1, 1, 0, -1,
+      -1, -1, 0, 1, -1, -1, 0, -1, 1, 1, 1, 0, 1, 1, -1, 0, 1, -1, 1, 0, 1, -1,
+      -1, 0, -1, 1, 1, 0, -1, 1, -1, 0, -1, -1, 1, 0, -1, -1, -1, 0,
+    ]),
+    noise2D: function (xin, yin) {
+      var permMod12 = this.permMod12;
+      var perm = this.perm;
+      var grad3 = this.grad3;
+      var n0 = 0;
+      var n1 = 0;
+      var n2 = 0;
+
+      var s = (xin + yin) * F2;
+      var i = Math.floor(xin + s);
+      var j = Math.floor(yin + s);
+      var t = (i + j) * G2;
+      var X0 = i - t;
+      var Y0 = j - t;
+      var x0 = xin - X0;
+      var y0 = yin - Y0;
+
+      var i1, j1;
+      if (x0 > y0) {
+        i1 = 1;
+        j1 = 0;
+      } else {
+        i1 = 0;
+        j1 = 1;
+      }
+
+      var x1 = x0 - i1 + G2;
+      var y1 = y0 - j1 + G2;
+      var x2 = x0 - 1.0 + 2.0 * G2;
+      var y2 = y0 - 1.0 + 2.0 * G2;
+
+      var ii = i & 255;
+      var jj = j & 255;
+
+      var t0 = 0.5 - x0 * x0 - y0 * y0;
+      if (t0 >= 0) {
+        var gi0 = permMod12[ii + perm[jj]] * 3;
+        t0 *= t0;
+        n0 = t0 * t0 * (grad3[gi0] * x0 + grad3[gi0 + 1] * y0);
+      }
+      var t1 = 0.5 - x1 * x1 - y1 * y1;
+      if (t1 >= 0) {
+        var gi1 = permMod12[ii + i1 + perm[jj + j1]] * 3;
+        t1 *= t1;
+        n1 = t1 * t1 * (grad3[gi1] * x1 + grad3[gi1 + 1] * y1);
+      }
+      var t2 = 0.5 - x2 * x2 - y2 * y2;
+      if (t2 >= 0) {
+        var gi2 = permMod12[ii + 1 + perm[jj + 1]] * 3;
+        t2 *= t2;
+        n2 = t2 * t2 * (grad3[gi2] * x2 + grad3[gi2 + 1] * y2);
+      }
+
+      return 70.0 * (n0 + n1 + n2);
+    },
+
+    noise3D: function (xin, yin, zin) {
+      var permMod12 = this.permMod12;
+      var perm = this.perm;
+      var grad3 = this.grad3;
+      var n0, n1, n2, n3;
+
+      var s = (xin + yin + zin) * F3;
+      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 = i - t;
+      var Y0 = j - t;
+      var Z0 = k - t;
+      var x0 = xin - X0;
+      var y0 = yin - Y0;
+      var z0 = zin - Z0;
+
+      var i1, j1, k1;
+      var i2, j2, k2;
+      if (x0 >= y0) {
+        if (y0 >= z0) {
           i1 = 1;
           j1 = 0;
-        } // lower triangle, XY order: (0,0)->(1,0)->(1,1)
-        else {
+          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;
-        } // upper triangle, YX order: (0,0)->(0,1)->(1,1)
-        // A step of (1,0) in (i,j) means a step of (1-c,-c) in (x,y), and
-        // a step of (0,1) in (i,j) means a step of (-c,1-c) in (x,y), where
-        // c = (3-sqrt(3))/6
-        var x1 = x0 - i1 + G2; // Offsets for middle corner in (x,y) unskewed coords
-        var y1 = y0 - j1 + G2;
-        var x2 = x0 - 1.0 + 2.0 * G2; // Offsets for last corner in (x,y) unskewed coords
-        var y2 = y0 - 1.0 + 2.0 * G2;
-        // Work out the hashed gradient indices of the three simplex corners
-        var ii = i & 255;
-        var jj = j & 255;
-        // Calculate the contribution from the three corners
-        var t0 = 0.5 - x0 * x0 - y0 * y0;
-        if (t0 >= 0) {
-          var gi0 = permMod12[ii + perm[jj]] * 3;
-          t0 *= t0;
-          n0 = t0 * t0 * (grad3[gi0] * x0 + grad3[gi0 + 1] * y0); // (x,y) of grad3 used for 2D gradient
+          k1 = 0;
+          i2 = 0;
+          j2 = 1;
+          k2 = 1;
+        } else {
+          i1 = 0;
+          j1 = 1;
+          k1 = 0;
+          i2 = 1;
+          j2 = 1;
+          k2 = 0;
         }
-        var t1 = 0.5 - x1 * x1 - y1 * y1;
-        if (t1 >= 0) {
-          var gi1 = permMod12[ii + i1 + perm[jj + j1]] * 3;
-          t1 *= t1;
-          n1 = t1 * t1 * (grad3[gi1] * x1 + grad3[gi1 + 1] * y1);
-        }
-        var t2 = 0.5 - x2 * x2 - y2 * y2;
-        if (t2 >= 0) {
-          var gi2 = permMod12[ii + 1 + perm[jj + 1]] * 3;
-          t2 *= t2;
-          n2 = t2 * t2 * (grad3[gi2] * x2 + grad3[gi2 + 1] * y2);
-        }
-        // Add contributions from each corner to get the final noise value.
-        // The result is scaled to return values in the interval [-1,1].
-        return 70.0 * (n0 + n1 + n2);
-      },
-      // 3D simplex noise
-      noise3D: function(xin, yin, zin) {
-        var permMod12 = this.permMod12;
-        var perm = this.perm;
-        var grad3 = this.grad3;
-        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; // Very nice and simple skew factor for 3D
-        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 = i - t; // Unskew the cell origin back to (x,y,z) space
-        var Y0 = j - t;
-        var Z0 = k - t;
-        var x0 = xin - X0; // The x,y,z distances from the cell origin
-        var y0 = yin - Y0;
-        var z0 = zin - Z0;
-        // 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;
-          } // X Y Z order
-          else if (x0 >= z0) {
-            i1 = 1;
-            j1 = 0;
-            k1 = 0;
-            i2 = 1;
-            j2 = 0;
-            k2 = 1;
-          } // X Z Y order
-          else {
-            i1 = 0;
-            j1 = 0;
-            k1 = 1;
-            i2 = 1;
-            j2 = 0;
-            k2 = 1;
-          } // Z X Y order
-        }
-        else { // x0<y0
-          if (y0 < z0) {
-            i1 = 0;
-            j1 = 0;
-            k1 = 1;
-            i2 = 0;
-            j2 = 1;
-            k2 = 1;
-          } // Z Y X order
-          else if (x0 < z0) {
-            i1 = 0;
-            j1 = 1;
-            k1 = 0;
-            i2 = 0;
-            j2 = 1;
-            k2 = 1;
-          } // Y Z X order
-          else {
-            i1 = 0;
-            j1 = 1;
-            k1 = 0;
-            i2 = 1;
-            j2 = 1;
-            k2 = 0;
-          } // Y X Z order
-        }
-        // 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 in (x,y,z) coords
-        var y1 = y0 - j1 + G3;
-        var z1 = z0 - k1 + G3;
-        var x2 = x0 - i2 + 2.0 * G3; // Offsets for third corner in (x,y,z) coords
-        var y2 = y0 - j2 + 2.0 * G3;
-        var z2 = z0 - k2 + 2.0 * G3;
-        var x3 = x0 - 1.0 + 3.0 * G3; // Offsets for last corner in (x,y,z) coords
-        var y3 = y0 - 1.0 + 3.0 * G3;
-        var z3 = z0 - 1.0 + 3.0 * G3;
-        // Work out the hashed gradient indices of the four simplex corners
-        var ii = i & 255;
-        var jj = j & 255;
-        var kk = k & 255;
-        // Calculate the contribution from the four corners
-        var t0 = 0.6 - x0 * x0 - y0 * y0 - z0 * z0;
-        if (t0 < 0) n0 = 0.0;
-        else {
-          var gi0 = permMod12[ii + perm[jj + perm[kk]]] * 3;
-          t0 *= t0;
-          n0 = t0 * t0 * (grad3[gi0] * x0 + grad3[gi0 + 1] * y0 + grad3[gi0 + 2] * z0);
-        }
-        var t1 = 0.6 - x1 * x1 - y1 * y1 - z1 * z1;
-        if (t1 < 0) n1 = 0.0;
-        else {
-          var gi1 = permMod12[ii + i1 + perm[jj + j1 + perm[kk + k1]]] * 3;
-          t1 *= t1;
-          n1 = t1 * t1 * (grad3[gi1] * x1 + grad3[gi1 + 1] * y1 + grad3[gi1 + 2] * z1);
-        }
-        var t2 = 0.6 - x2 * x2 - y2 * y2 - z2 * z2;
-        if (t2 < 0) n2 = 0.0;
-        else {
-          var gi2 = permMod12[ii + i2 + perm[jj + j2 + perm[kk + k2]]] * 3;
-          t2 *= t2;
-          n2 = t2 * t2 * (grad3[gi2] * x2 + grad3[gi2 + 1] * y2 + grad3[gi2 + 2] * z2);
-        }
-        var t3 = 0.6 - x3 * x3 - y3 * y3 - z3 * z3;
-        if (t3 < 0) n3 = 0.0;
-        else {
-          var gi3 = permMod12[ii + 1 + perm[jj + 1 + perm[kk + 1]]] * 3;
-          t3 *= t3;
-          n3 = t3 * t3 * (grad3[gi3] * x3 + grad3[gi3 + 1] * y3 + grad3[gi3 + 2] * z3);
-        }
-        // Add contributions from each corner to get the final noise value.
-        // The result is scaled to stay just inside [-1,1]
-        return 32.0 * (n0 + n1 + n2 + n3);
-      },
-      // 4D simplex noise, better simplex rank ordering method 2012-03-09
-      noise4D: function(x, y, z, w) {
-        var perm = this.perm;
-        var grad4 = this.grad4;
-  
-        var n0, n1, n2, n3, n4; // Noise contributions from the five corners
-        // Skew the (x,y,z,w) space to determine which cell of 24 simplices we're in
-        var s = (x + y + z + w) * F4; // Factor for 4D skewing
-        var i = Math.floor(x + s);
-        var j = Math.floor(y + s);
-        var k = Math.floor(z + s);
-        var l = Math.floor(w + s);
-        var t = (i + j + k + l) * G4; // Factor for 4D unskewing
-        var X0 = i - t; // Unskew the cell origin back to (x,y,z,w) space
-        var Y0 = j - t;
-        var Z0 = k - t;
-        var W0 = l - t;
-        var x0 = x - X0; // The x,y,z,w distances from the cell origin
-        var y0 = y - Y0;
-        var z0 = z - Z0;
-        var w0 = w - W0;
-        // For the 4D case, the simplex is a 4D shape I won't even try to describe.
-        // To find out which of the 24 possible simplices we're in, we need to
-        // determine the magnitude ordering of x0, y0, z0 and w0.
-        // Six pair-wise comparisons are performed between each possible pair
-        // of the four coordinates, and the results are used to rank the numbers.
-        var rankx = 0;
-        var ranky = 0;
-        var rankz = 0;
-        var rankw = 0;
-        if (x0 > y0) rankx++;
-        else ranky++;
-        if (x0 > z0) rankx++;
-        else rankz++;
-        if (x0 > w0) rankx++;
-        else rankw++;
-        if (y0 > z0) ranky++;
-        else rankz++;
-        if (y0 > w0) ranky++;
-        else rankw++;
-        if (z0 > w0) rankz++;
-        else rankw++;
-        var i1, j1, k1, l1; // The integer offsets for the second simplex corner
-        var i2, j2, k2, l2; // The integer offsets for the third simplex corner
-        var i3, j3, k3, l3; // The integer offsets for the fourth simplex corner
-        // simplex[c] is a 4-vector with the numbers 0, 1, 2 and 3 in some order.
-        // Many values of c will never occur, since e.g. x>y>z>w makes x<z, y<w and x<w
-        // impossible. Only the 24 indices which have non-zero entries make any sense.
-        // We use a thresholding to set the coordinates in turn from the largest magnitude.
-        // Rank 3 denotes the largest coordinate.
-        i1 = rankx >= 3 ? 1 : 0;
-        j1 = ranky >= 3 ? 1 : 0;
-        k1 = rankz >= 3 ? 1 : 0;
-        l1 = rankw >= 3 ? 1 : 0;
-        // Rank 2 denotes the second largest coordinate.
-        i2 = rankx >= 2 ? 1 : 0;
-        j2 = ranky >= 2 ? 1 : 0;
-        k2 = rankz >= 2 ? 1 : 0;
-        l2 = rankw >= 2 ? 1 : 0;
-        // Rank 1 denotes the second smallest coordinate.
-        i3 = rankx >= 1 ? 1 : 0;
-        j3 = ranky >= 1 ? 1 : 0;
-        k3 = rankz >= 1 ? 1 : 0;
-        l3 = rankw >= 1 ? 1 : 0;
-        // The fifth corner has all coordinate offsets = 1, so no need to compute that.
-        var x1 = x0 - i1 + G4; // Offsets for second corner in (x,y,z,w) coords
-        var y1 = y0 - j1 + G4;
-        var z1 = z0 - k1 + G4;
-        var w1 = w0 - l1 + G4;
-        var x2 = x0 - i2 + 2.0 * G4; // Offsets for third corner in (x,y,z,w) coords
-        var y2 = y0 - j2 + 2.0 * G4;
-        var z2 = z0 - k2 + 2.0 * G4;
-        var w2 = w0 - l2 + 2.0 * G4;
-        var x3 = x0 - i3 + 3.0 * G4; // Offsets for fourth corner in (x,y,z,w) coords
-        var y3 = y0 - j3 + 3.0 * G4;
-        var z3 = z0 - k3 + 3.0 * G4;
-        var w3 = w0 - l3 + 3.0 * G4;
-        var x4 = x0 - 1.0 + 4.0 * G4; // Offsets for last corner in (x,y,z,w) coords
-        var y4 = y0 - 1.0 + 4.0 * G4;
-        var z4 = z0 - 1.0 + 4.0 * G4;
-        var w4 = w0 - 1.0 + 4.0 * G4;
-        // Work out the hashed gradient indices of the five simplex corners
-        var ii = i & 255;
-        var jj = j & 255;
-        var kk = k & 255;
-        var ll = l & 255;
-        // Calculate the contribution from the five corners
-        var t0 = 0.6 - x0 * x0 - y0 * y0 - z0 * z0 - w0 * w0;
-        if (t0 < 0) n0 = 0.0;
-        else {
-          var gi0 = (perm[ii + perm[jj + perm[kk + perm[ll]]]] % 32) * 4;
-          t0 *= t0;
-          n0 = t0 * t0 * (grad4[gi0] * x0 + grad4[gi0 + 1] * y0 + grad4[gi0 + 2] * z0 + grad4[gi0 + 3] * w0);
-        }
-        var t1 = 0.6 - x1 * x1 - y1 * y1 - z1 * z1 - w1 * w1;
-        if (t1 < 0) n1 = 0.0;
-        else {
-          var gi1 = (perm[ii + i1 + perm[jj + j1 + perm[kk + k1 + perm[ll + l1]]]] % 32) * 4;
-          t1 *= t1;
-          n1 = t1 * t1 * (grad4[gi1] * x1 + grad4[gi1 + 1] * y1 + grad4[gi1 + 2] * z1 + grad4[gi1 + 3] * w1);
-        }
-        var t2 = 0.6 - x2 * x2 - y2 * y2 - z2 * z2 - w2 * w2;
-        if (t2 < 0) n2 = 0.0;
-        else {
-          var gi2 = (perm[ii + i2 + perm[jj + j2 + perm[kk + k2 + perm[ll + l2]]]] % 32) * 4;
-          t2 *= t2;
-          n2 = t2 * t2 * (grad4[gi2] * x2 + grad4[gi2 + 1] * y2 + grad4[gi2 + 2] * z2 + grad4[gi2 + 3] * w2);
-        }
-        var t3 = 0.6 - x3 * x3 - y3 * y3 - z3 * z3 - w3 * w3;
-        if (t3 < 0) n3 = 0.0;
-        else {
-          var gi3 = (perm[ii + i3 + perm[jj + j3 + perm[kk + k3 + perm[ll + l3]]]] % 32) * 4;
-          t3 *= t3;
-          n3 = t3 * t3 * (grad4[gi3] * x3 + grad4[gi3 + 1] * y3 + grad4[gi3 + 2] * z3 + grad4[gi3 + 3] * w3);
-        }
-        var t4 = 0.6 - x4 * x4 - y4 * y4 - z4 * z4 - w4 * w4;
-        if (t4 < 0) n4 = 0.0;
-        else {
-          var gi4 = (perm[ii + 1 + perm[jj + 1 + perm[kk + 1 + perm[ll + 1]]]] % 32) * 4;
-          t4 *= t4;
-          n4 = t4 * t4 * (grad4[gi4] * x4 + grad4[gi4 + 1] * y4 + grad4[gi4 + 2] * z4 + grad4[gi4 + 3] * w4);
-        }
-        // Sum up and scale the result to cover the range [-1,1]
-        return 27.0 * (n0 + n1 + n2 + n3 + n4);
       }
+
+      var x1 = x0 - i1 + G3;
+      var y1 = y0 - j1 + G3;
+      var z1 = z0 - k1 + G3;
+      var x2 = x0 - i2 + 2.0 * G3;
+      var y2 = y0 - j2 + 2.0 * G3;
+      var z2 = z0 - k2 + 2.0 * G3;
+      var x3 = x0 - 1.0 + 3.0 * G3;
+      var y3 = y0 - 1.0 + 3.0 * G3;
+      var z3 = z0 - 1.0 + 3.0 * G3;
+
+      var ii = i & 255;
+      var jj = j & 255;
+      var kk = k & 255;
+
+      var t0 = 0.6 - x0 * x0 - y0 * y0 - z0 * z0;
+      if (t0 < 0) n0 = 0.0;
+      else {
+        var gi0 = permMod12[ii + perm[jj + perm[kk]]] * 3;
+        t0 *= t0;
+        n0 =
+          t0 *
+          t0 *
+          (grad3[gi0] * x0 + grad3[gi0 + 1] * y0 + grad3[gi0 + 2] * z0);
+      }
+      var t1 = 0.6 - x1 * x1 - y1 * y1 - z1 * z1;
+      if (t1 < 0) n1 = 0.0;
+      else {
+        var gi1 = permMod12[ii + i1 + perm[jj + j1 + perm[kk + k1]]] * 3;
+        t1 *= t1;
+        n1 =
+          t1 *
+          t1 *
+          (grad3[gi1] * x1 + grad3[gi1 + 1] * y1 + grad3[gi1 + 2] * z1);
+      }
+      var t2 = 0.6 - x2 * x2 - y2 * y2 - z2 * z2;
+      if (t2 < 0) n2 = 0.0;
+      else {
+        var gi2 = permMod12[ii + i2 + perm[jj + j2 + perm[kk + k2]]] * 3;
+        t2 *= t2;
+        n2 =
+          t2 *
+          t2 *
+          (grad3[gi2] * x2 + grad3[gi2 + 1] * y2 + grad3[gi2 + 2] * z2);
+      }
+      var t3 = 0.6 - x3 * x3 - y3 * y3 - z3 * z3;
+      if (t3 < 0) n3 = 0.0;
+      else {
+        var gi3 = permMod12[ii + 1 + perm[jj + 1 + perm[kk + 1]]] * 3;
+        t3 *= t3;
+        n3 =
+          t3 *
+          t3 *
+          (grad3[gi3] * x3 + grad3[gi3 + 1] * y3 + grad3[gi3 + 2] * z3);
+      }
+
+      return 32.0 * (n0 + n1 + n2 + n3);
+    },
+
+    noise4D: function (x, y, z, w) {
+      var perm = this.perm;
+      var grad4 = this.grad4;
+
+      var n0, n1, n2, n3, n4;
+
+      var s = (x + y + z + w) * F4;
+      var i = Math.floor(x + s);
+      var j = Math.floor(y + s);
+      var k = Math.floor(z + s);
+      var l = Math.floor(w + s);
+      var t = (i + j + k + l) * G4;
+      var X0 = i - t;
+      var Y0 = j - t;
+      var Z0 = k - t;
+      var W0 = l - t;
+      var x0 = x - X0;
+      var y0 = y - Y0;
+      var z0 = z - Z0;
+      var w0 = w - W0;
+
+      var rankx = 0;
+      var ranky = 0;
+      var rankz = 0;
+      var rankw = 0;
+      if (x0 > y0) rankx++;
+      else ranky++;
+      if (x0 > z0) rankx++;
+      else rankz++;
+      if (x0 > w0) rankx++;
+      else rankw++;
+      if (y0 > z0) ranky++;
+      else rankz++;
+      if (y0 > w0) ranky++;
+      else rankw++;
+      if (z0 > w0) rankz++;
+      else rankw++;
+      var i1, j1, k1, l1;
+      var i2, j2, k2, l2;
+      var i3, j3, k3, l3;
+
+      i1 = rankx >= 3 ? 1 : 0;
+      j1 = ranky >= 3 ? 1 : 0;
+      k1 = rankz >= 3 ? 1 : 0;
+      l1 = rankw >= 3 ? 1 : 0;
+
+      i2 = rankx >= 2 ? 1 : 0;
+      j2 = ranky >= 2 ? 1 : 0;
+      k2 = rankz >= 2 ? 1 : 0;
+      l2 = rankw >= 2 ? 1 : 0;
+
+      i3 = rankx >= 1 ? 1 : 0;
+      j3 = ranky >= 1 ? 1 : 0;
+      k3 = rankz >= 1 ? 1 : 0;
+      l3 = rankw >= 1 ? 1 : 0;
+
+      var x1 = x0 - i1 + G4;
+      var y1 = y0 - j1 + G4;
+      var z1 = z0 - k1 + G4;
+      var w1 = w0 - l1 + G4;
+      var x2 = x0 - i2 + 2.0 * G4;
+      var y2 = y0 - j2 + 2.0 * G4;
+      var z2 = z0 - k2 + 2.0 * G4;
+      var w2 = w0 - l2 + 2.0 * G4;
+      var x3 = x0 - i3 + 3.0 * G4;
+      var y3 = y0 - j3 + 3.0 * G4;
+      var z3 = z0 - k3 + 3.0 * G4;
+      var w3 = w0 - l3 + 3.0 * G4;
+      var x4 = x0 - 1.0 + 4.0 * G4;
+      var y4 = y0 - 1.0 + 4.0 * G4;
+      var z4 = z0 - 1.0 + 4.0 * G4;
+      var w4 = w0 - 1.0 + 4.0 * G4;
+
+      var ii = i & 255;
+      var jj = j & 255;
+      var kk = k & 255;
+      var ll = l & 255;
+
+      var t0 = 0.6 - x0 * x0 - y0 * y0 - z0 * z0 - w0 * w0;
+      if (t0 < 0) n0 = 0.0;
+      else {
+        var gi0 = (perm[ii + perm[jj + perm[kk + perm[ll]]]] % 32) * 4;
+        t0 *= t0;
+        n0 =
+          t0 *
+          t0 *
+          (grad4[gi0] * x0 +
+            grad4[gi0 + 1] * y0 +
+            grad4[gi0 + 2] * z0 +
+            grad4[gi0 + 3] * w0);
+      }
+      var t1 = 0.6 - x1 * x1 - y1 * y1 - z1 * z1 - w1 * w1;
+      if (t1 < 0) n1 = 0.0;
+      else {
+        var gi1 =
+          (perm[ii + i1 + perm[jj + j1 + perm[kk + k1 + perm[ll + l1]]]] % 32) *
+          4;
+        t1 *= t1;
+        n1 =
+          t1 *
+          t1 *
+          (grad4[gi1] * x1 +
+            grad4[gi1 + 1] * y1 +
+            grad4[gi1 + 2] * z1 +
+            grad4[gi1 + 3] * w1);
+      }
+      var t2 = 0.6 - x2 * x2 - y2 * y2 - z2 * z2 - w2 * w2;
+      if (t2 < 0) n2 = 0.0;
+      else {
+        var gi2 =
+          (perm[ii + i2 + perm[jj + j2 + perm[kk + k2 + perm[ll + l2]]]] % 32) *
+          4;
+        t2 *= t2;
+        n2 =
+          t2 *
+          t2 *
+          (grad4[gi2] * x2 +
+            grad4[gi2 + 1] * y2 +
+            grad4[gi2 + 2] * z2 +
+            grad4[gi2 + 3] * w2);
+      }
+      var t3 = 0.6 - x3 * x3 - y3 * y3 - z3 * z3 - w3 * w3;
+      if (t3 < 0) n3 = 0.0;
+      else {
+        var gi3 =
+          (perm[ii + i3 + perm[jj + j3 + perm[kk + k3 + perm[ll + l3]]]] % 32) *
+          4;
+        t3 *= t3;
+        n3 =
+          t3 *
+          t3 *
+          (grad4[gi3] * x3 +
+            grad4[gi3 + 1] * y3 +
+            grad4[gi3 + 2] * z3 +
+            grad4[gi3 + 3] * w3);
+      }
+      var t4 = 0.6 - x4 * x4 - y4 * y4 - z4 * z4 - w4 * w4;
+      if (t4 < 0) n4 = 0.0;
+      else {
+        var gi4 =
+          (perm[ii + 1 + perm[jj + 1 + perm[kk + 1 + perm[ll + 1]]]] % 32) * 4;
+        t4 *= t4;
+        n4 =
+          t4 *
+          t4 *
+          (grad4[gi4] * x4 +
+            grad4[gi4 + 1] * y4 +
+            grad4[gi4 + 2] * z4 +
+            grad4[gi4 + 3] * w4);
+      }
+
+      return 27.0 * (n0 + n1 + n2 + n3 + n4);
+    },
+  };
+
+  function buildPermutationTable(random) {
+    var i;
+    var p = new Uint8Array(256);
+    for (i = 0; i < 256; i++) {
+      p[i] = i;
+    }
+    for (i = 0; i < 255; i++) {
+      var r = i + ~~(random() * (256 - i));
+      var aux = p[i];
+      p[i] = p[r];
+      p[r] = aux;
+    }
+    return p;
+  }
+  SimplexNoise._buildPermutationTable = buildPermutationTable;
+
+  function alea() {
+    var s0 = 0;
+    var s1 = 0;
+    var s2 = 0;
+    var c = 1;
+
+    var mash = masher();
+    s0 = mash(" ");
+    s1 = mash(" ");
+    s2 = mash(" ");
+
+    for (var i = 0; i < arguments.length; i++) {
+      s0 -= mash(arguments[i]);
+      if (s0 < 0) {
+        s0 += 1;
+      }
+      s1 -= mash(arguments[i]);
+      if (s1 < 0) {
+        s1 += 1;
+      }
+      s2 -= mash(arguments[i]);
+      if (s2 < 0) {
+        s2 += 1;
+      }
+    }
+    mash = null;
+    return function () {
+      var t = 2091639 * s0 + c * 2.3283064365386963e-10;
+      s0 = s1;
+      s1 = s2;
+      return (s2 = t - (c = t | 0));
     };
-  
-    function buildPermutationTable(random) {
-      var i;
-      var p = new Uint8Array(256);
-      for (i = 0; i < 256; i++) {
-        p[i] = i;
+  }
+  function masher() {
+    var n = 0xefc8249d;
+    return function (data) {
+      data = data.toString();
+      for (var i = 0; i < data.length; i++) {
+        n += data.charCodeAt(i);
+        var h = 0.02519603282416938 * n;
+        n = h >>> 0;
+        h -= n;
+        h *= n;
+        n = h >>> 0;
+        h -= n;
+        n += h * 0x100000000;
       }
-      for (i = 0; i < 255; i++) {
-        var r = i + ~~(random() * (256 - i));
-        var aux = p[i];
-        p[i] = p[r];
-        p[r] = aux;
-      }
-      return p;
-    }
-    SimplexNoise._buildPermutationTable = buildPermutationTable;
-  
-    function alea() {
-      // Johannes Baagøe <baagoe@baagoe.com>, 2010
-      var s0 = 0;
-      var s1 = 0;
-      var s2 = 0;
-      var c = 1;
-  
-      var mash = masher();
-      s0 = mash(' ');
-      s1 = mash(' ');
-      s2 = mash(' ');
-  
-      for (var i = 0; i < arguments.length; i++) {
-        s0 -= mash(arguments[i]);
-        if (s0 < 0) {
-          s0 += 1;
-        }
-        s1 -= mash(arguments[i]);
-        if (s1 < 0) {
-          s1 += 1;
-        }
-        s2 -= mash(arguments[i]);
-        if (s2 < 0) {
-          s2 += 1;
-        }
-      }
-      mash = null;
-      return function() {
-        var t = 2091639 * s0 + c * 2.3283064365386963e-10; // 2^-32
-        s0 = s1;
-        s1 = s2;
-        return s2 = t - (c = t | 0);
-      };
-    }
-    function masher() {
-      var n = 0xefc8249d;
-      return function(data) {
-        data = data.toString();
-        for (var i = 0; i < data.length; i++) {
-          n += data.charCodeAt(i);
-          var h = 0.02519603282416938 * n;
-          n = h >>> 0;
-          h -= n;
-          h *= n;
-          n = h >>> 0;
-          h -= n;
-          n += h * 0x100000000; // 2^32
-        }
-        return (n >>> 0) * 2.3283064365386963e-10; // 2^-32
-      };
-    }
-  
-    // amd
-    if (typeof define !== 'undefined' && define.amd) define(function() {return SimplexNoise;});
-    // common js
-    if (typeof exports !== 'undefined') exports.SimplexNoise = SimplexNoise;
-    // browser
-    else if (typeof window !== 'undefined') window.SimplexNoise = SimplexNoise;
-    // nodejs
-    if (typeof module !== 'undefined') {
-      module.exports = SimplexNoise;
-    }
-  
-  })();
\ No newline at end of file
+      return (n >>> 0) * 2.3283064365386963e-10;
+    };
+  }
+
+  if (typeof define !== "undefined" && define.amd)
+    define(function () {
+      return SimplexNoise;
+    });
+
+  if (typeof exports !== "undefined") exports.SimplexNoise = SimplexNoise;
+  else if (typeof window !== "undefined") window.SimplexNoise = SimplexNoise;
+
+  if (typeof module !== "undefined") {
+    module.exports = SimplexNoise;
+  }
+})();