glsl-noise-template-string/dist/noiseFunctions/simplex3D.js

Use popular noise functions within glsl written in JS/TS Template-Strings

"use strict";
var __makeTemplateObject = (this && this.__makeTemplateObject) || function (cooked, raw) {
    if (Object.defineProperty) { Object.defineProperty(cooked, "raw", { value: raw }); } else { cooked.raw = raw; }
    return cooked;
};
Object.defineProperty(exports, "__esModule", { value: true });
exports.simplex3D = void 0;
var glslIdentityFunction_1 = require("../lib/glslIdentityFunction");
// Simplex 3D Noise
// by Ian McEwan, Ashima Arts
//
exports.simplex3D = glslIdentityFunction_1.glsl(templateObject_1 || (templateObject_1 = __makeTemplateObject(["\n    vec4 permute_wZKLQskNaF(vec4 x){return mod(((x*34.0)+1.0)*x, 289.0);}\n    vec4 taylorInvSqrt_WVt3ZeoHUN(vec4 r){return 1.79284291400159 - 0.85373472095314 * r;}  \n        \n    float simplex3D(vec3 v){ \n        const vec2  C = vec2(1.0/6.0, 1.0/3.0) ;\n        const vec4  D = vec4(0.0, 0.5, 1.0, 2.0);\n\n        // First corner\n        vec3 i  = floor(v + dot(v, C.yyy) );\n        vec3 x0 =   v - i + dot(i, C.xxx) ;\n\n        // Other corners\n        vec3 g = step(x0.yzx, x0.xyz);\n        vec3 l = 1.0 - g;\n        vec3 i1 = min( g.xyz, l.zxy );\n        vec3 i2 = max( g.xyz, l.zxy );\n\n        //  x0 = x0 - 0. + 0.0 * C \n        vec3 x1 = x0 - i1 + 1.0 * C.xxx;\n        vec3 x2 = x0 - i2 + 2.0 * C.xxx;\n        vec3 x3 = x0 - 1. + 3.0 * C.xxx;\n\n        // Permutations\n        i = mod(i, 289.0 ); \n        vec4 p = permute_wZKLQskNaF( permute_wZKLQskNaF( permute_wZKLQskNaF( \n                    i.z + vec4(0.0, i1.z, i2.z, 1.0 ))\n                + i.y + vec4(0.0, i1.y, i2.y, 1.0 )) \n                + i.x + vec4(0.0, i1.x, i2.x, 1.0 ));\n\n        // Gradients\n        // ( N*N points uniformly over a square, mapped onto an octahedron.)\n        float n_ = 1.0/7.0; // N=7\n        vec3  ns = n_ * D.wyz - D.xzx;\n\n        vec4 j = p - 49.0 * floor(p * ns.z *ns.z);  //  mod(p,N*N)\n\n        vec4 x_ = floor(j * ns.z);\n        vec4 y_ = floor(j - 7.0 * x_ );    // mod(j,N)\n\n        vec4 x = x_ *ns.x + ns.yyyy;\n        vec4 y = y_ *ns.x + ns.yyyy;\n        vec4 h = 1.0 - abs(x) - abs(y);\n\n        vec4 b0 = vec4( x.xy, y.xy );\n        vec4 b1 = vec4( x.zw, y.zw );\n\n        vec4 s0 = floor(b0)*2.0 + 1.0;\n        vec4 s1 = floor(b1)*2.0 + 1.0;\n        vec4 sh = -step(h, vec4(0.0));\n\n        vec4 a0 = b0.xzyw + s0.xzyw*sh.xxyy ;\n        vec4 a1 = b1.xzyw + s1.xzyw*sh.zzww ;\n\n        vec3 p0 = vec3(a0.xy,h.x);\n        vec3 p1 = vec3(a0.zw,h.y);\n        vec3 p2 = vec3(a1.xy,h.z);\n        vec3 p3 = vec3(a1.zw,h.w);\n\n        //Normalise gradients\n        vec4 norm = taylorInvSqrt_WVt3ZeoHUN(vec4(dot(p0,p0), dot(p1,p1), dot(p2, p2), dot(p3,p3)));\n        p0 *= norm.x;\n        p1 *= norm.y;\n        p2 *= norm.z;\n        p3 *= norm.w;\n\n        // Mix final noise value\n        vec4 m = max(0.6 - vec4(dot(x0,x0), dot(x1,x1), dot(x2,x2), dot(x3,x3)), 0.0);\n        m = m * m;\n        return 42.0 * dot( m*m, vec4( dot(p0,x0), dot(p1,x1), \n                                        dot(p2,x2), dot(p3,x3) ) );\n    }\n"], ["\n    vec4 permute_wZKLQskNaF(vec4 x){return mod(((x*34.0)+1.0)*x, 289.0);}\n    vec4 taylorInvSqrt_WVt3ZeoHUN(vec4 r){return 1.79284291400159 - 0.85373472095314 * r;}  \n        \n    float simplex3D(vec3 v){ \n        const vec2  C = vec2(1.0/6.0, 1.0/3.0) ;\n        const vec4  D = vec4(0.0, 0.5, 1.0, 2.0);\n\n        // First corner\n        vec3 i  = floor(v + dot(v, C.yyy) );\n        vec3 x0 =   v - i + dot(i, C.xxx) ;\n\n        // Other corners\n        vec3 g = step(x0.yzx, x0.xyz);\n        vec3 l = 1.0 - g;\n        vec3 i1 = min( g.xyz, l.zxy );\n        vec3 i2 = max( g.xyz, l.zxy );\n\n        //  x0 = x0 - 0. + 0.0 * C \n        vec3 x1 = x0 - i1 + 1.0 * C.xxx;\n        vec3 x2 = x0 - i2 + 2.0 * C.xxx;\n        vec3 x3 = x0 - 1. + 3.0 * C.xxx;\n\n        // Permutations\n        i = mod(i, 289.0 ); \n        vec4 p = permute_wZKLQskNaF( permute_wZKLQskNaF( permute_wZKLQskNaF( \n                    i.z + vec4(0.0, i1.z, i2.z, 1.0 ))\n                + i.y + vec4(0.0, i1.y, i2.y, 1.0 )) \n                + i.x + vec4(0.0, i1.x, i2.x, 1.0 ));\n\n        // Gradients\n        // ( N*N points uniformly over a square, mapped onto an octahedron.)\n        float n_ = 1.0/7.0; // N=7\n        vec3  ns = n_ * D.wyz - D.xzx;\n\n        vec4 j = p - 49.0 * floor(p * ns.z *ns.z);  //  mod(p,N*N)\n\n        vec4 x_ = floor(j * ns.z);\n        vec4 y_ = floor(j - 7.0 * x_ );    // mod(j,N)\n\n        vec4 x = x_ *ns.x + ns.yyyy;\n        vec4 y = y_ *ns.x + ns.yyyy;\n        vec4 h = 1.0 - abs(x) - abs(y);\n\n        vec4 b0 = vec4( x.xy, y.xy );\n        vec4 b1 = vec4( x.zw, y.zw );\n\n        vec4 s0 = floor(b0)*2.0 + 1.0;\n        vec4 s1 = floor(b1)*2.0 + 1.0;\n        vec4 sh = -step(h, vec4(0.0));\n\n        vec4 a0 = b0.xzyw + s0.xzyw*sh.xxyy ;\n        vec4 a1 = b1.xzyw + s1.xzyw*sh.zzww ;\n\n        vec3 p0 = vec3(a0.xy,h.x);\n        vec3 p1 = vec3(a0.zw,h.y);\n        vec3 p2 = vec3(a1.xy,h.z);\n        vec3 p3 = vec3(a1.zw,h.w);\n\n        //Normalise gradients\n        vec4 norm = taylorInvSqrt_WVt3ZeoHUN(vec4(dot(p0,p0), dot(p1,p1), dot(p2, p2), dot(p3,p3)));\n        p0 *= norm.x;\n        p1 *= norm.y;\n        p2 *= norm.z;\n        p3 *= norm.w;\n\n        // Mix final noise value\n        vec4 m = max(0.6 - vec4(dot(x0,x0), dot(x1,x1), dot(x2,x2), dot(x3,x3)), 0.0);\n        m = m * m;\n        return 42.0 * dot( m*m, vec4( dot(p0,x0), dot(p1,x1), \n                                        dot(p2,x2), dot(p3,x3) ) );\n    }\n"])));
var templateObject_1;