glsl-noise-template-string/dist/noiseFunctions/simplex2D.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.simplex2D = void 0;
var glslIdentityFunction_1 = require("../lib/glslIdentityFunction");
// Simplex 2D noise
//
exports.simplex2D = glslIdentityFunction_1.glsl(templateObject_1 || (templateObject_1 = __makeTemplateObject(["\n    vec3 permute_OYxvv17yOe(vec3 x) { return mod(((x*34.0)+1.0)*x, 289.0); }\n            \n    float simplex2D(vec2 v){\n        \n        const vec4 C = vec4(0.211324865405187, 0.366025403784439,\n                -0.577350269189626, 0.024390243902439);\n        vec2 i  = floor(v + dot(v, C.yy) );\n        vec2 x0 = v -   i + dot(i, C.xx);\n        vec2 i1;\n        i1 = (x0.x > x0.y) ? vec2(1.0, 0.0) : vec2(0.0, 1.0);\n        vec4 x12 = x0.xyxy + C.xxzz;\n        x12.xy -= i1;\n        i = mod(i, 289.0);\n        vec3 p = permute_OYxvv17yOe( permute_OYxvv17yOe( i.y + vec3(0.0, i1.y, 1.0 ))\n        + i.x + vec3(0.0, i1.x, 1.0 ));\n        vec3 m = max(0.5 - vec3(dot(x0,x0), dot(x12.xy,x12.xy),\n            dot(x12.zw,x12.zw)), 0.0);\n        m = m*m ;\n        m = m*m ;\n        vec3 x = 2.0 * fract(p * C.www) - 1.0;\n        vec3 h = abs(x) - 0.5;\n        vec3 ox = floor(x + 0.5);\n        vec3 a0 = x - ox;\n        m *= 1.79284291400159 - 0.85373472095314 * ( a0*a0 + h*h );\n        vec3 g;\n        g.x  = a0.x  * x0.x  + h.x  * x0.y;\n        g.yz = a0.yz * x12.xz + h.yz * x12.yw;\n        return 130.0 * dot(m, g);\n    }\n"], ["\n    vec3 permute_OYxvv17yOe(vec3 x) { return mod(((x*34.0)+1.0)*x, 289.0); }\n            \n    float simplex2D(vec2 v){\n        \n        const vec4 C = vec4(0.211324865405187, 0.366025403784439,\n                -0.577350269189626, 0.024390243902439);\n        vec2 i  = floor(v + dot(v, C.yy) );\n        vec2 x0 = v -   i + dot(i, C.xx);\n        vec2 i1;\n        i1 = (x0.x > x0.y) ? vec2(1.0, 0.0) : vec2(0.0, 1.0);\n        vec4 x12 = x0.xyxy + C.xxzz;\n        x12.xy -= i1;\n        i = mod(i, 289.0);\n        vec3 p = permute_OYxvv17yOe( permute_OYxvv17yOe( i.y + vec3(0.0, i1.y, 1.0 ))\n        + i.x + vec3(0.0, i1.x, 1.0 ));\n        vec3 m = max(0.5 - vec3(dot(x0,x0), dot(x12.xy,x12.xy),\n            dot(x12.zw,x12.zw)), 0.0);\n        m = m*m ;\n        m = m*m ;\n        vec3 x = 2.0 * fract(p * C.www) - 1.0;\n        vec3 h = abs(x) - 0.5;\n        vec3 ox = floor(x + 0.5);\n        vec3 a0 = x - ox;\n        m *= 1.79284291400159 - 0.85373472095314 * ( a0*a0 + h*h );\n        vec3 g;\n        g.x  = a0.x  * x0.x  + h.x  * x0.y;\n        g.yz = a0.yz * x12.xz + h.yz * x12.yw;\n        return 130.0 * dot(m, g);\n    }\n"])));
var templateObject_1;