fast-noise-lite-ts/dist/noise/value-cubic.js

A fast and lightweight noise generation library for JavaScript

import { prime } from "../constants";
import { lerpCubic, valueCoordinateR2, valueCoordinateR3 } from "../utilities";
export function valueCubicR2(options, x, y) {
    const seed = options.seed;
    let x1 = Math.floor(x);
    let y1 = Math.floor(y);
    let xs = x - x1;
    let ys = y - y1;
    x1 = Math.imul(x1, prime.x);
    y1 = Math.imul(y1, prime.y);
    let x0 = x1 - prime.x;
    let y0 = y1 - prime.y;
    let x2 = x1 + prime.x;
    let y2 = y1 + prime.y;
    let x3 = x1 + (prime.x << 1);
    let y3 = y1 + (prime.y << 1);
    return (lerpCubic(lerpCubic(valueCoordinateR2(seed, x0, y0), valueCoordinateR2(seed, x1, y0), valueCoordinateR2(seed, x2, y0), valueCoordinateR2(seed, x3, y0), xs), lerpCubic(valueCoordinateR2(seed, x0, y1), valueCoordinateR2(seed, x1, y1), valueCoordinateR2(seed, x2, y1), valueCoordinateR2(seed, x3, y1), xs), lerpCubic(valueCoordinateR2(seed, x0, y2), valueCoordinateR2(seed, x1, y2), valueCoordinateR2(seed, x2, y2), valueCoordinateR2(seed, x3, y2), xs), lerpCubic(valueCoordinateR2(seed, x0, y3), valueCoordinateR2(seed, x1, y3), valueCoordinateR2(seed, x2, y3), valueCoordinateR2(seed, x3, y3), xs), ys) *
        (1 / (1.5 * 1.5)));
}
export function valueCubicR3(options, x, y, z) {
    const seed = options.seed;
    let x1 = Math.floor(x);
    let y1 = Math.floor(y);
    let z1 = Math.floor(z);
    let xs = x - x1;
    let ys = y - y1;
    let zs = z - z1;
    x1 = Math.imul(x1, prime.x);
    y1 = Math.imul(y1, prime.y);
    z1 = Math.imul(z1, prime.z);
    let x0 = x1 - prime.x;
    let y0 = y1 - prime.y;
    let z0 = z1 - prime.z;
    let x2 = x1 + prime.x;
    let y2 = y1 + prime.y;
    let z2 = z1 + prime.z;
    let x3 = x1 + (prime.x << 1);
    let y3 = y1 + (prime.y << 1);
    let z3 = z1 + (prime.z << 1);
    return (lerpCubic(lerpCubic(lerpCubic(valueCoordinateR3(seed, x0, y0, z0), valueCoordinateR3(seed, x1, y0, z0), valueCoordinateR3(seed, x2, y0, z0), valueCoordinateR3(seed, x3, y0, z0), xs), lerpCubic(valueCoordinateR3(seed, x0, y1, z0), valueCoordinateR3(seed, x1, y1, z0), valueCoordinateR3(seed, x2, y1, z0), valueCoordinateR3(seed, x3, y1, z0), xs), lerpCubic(valueCoordinateR3(seed, x0, y2, z0), valueCoordinateR3(seed, x1, y2, z0), valueCoordinateR3(seed, x2, y2, z0), valueCoordinateR3(seed, x3, y2, z0), xs), lerpCubic(valueCoordinateR3(seed, x0, y3, z0), valueCoordinateR3(seed, x1, y3, z0), valueCoordinateR3(seed, x2, y3, z0), valueCoordinateR3(seed, x3, y3, z0), xs), ys), lerpCubic(lerpCubic(valueCoordinateR3(seed, x0, y0, z1), valueCoordinateR3(seed, x1, y0, z1), valueCoordinateR3(seed, x2, y0, z1), valueCoordinateR3(seed, x3, y0, z1), xs), lerpCubic(valueCoordinateR3(seed, x0, y1, z1), valueCoordinateR3(seed, x1, y1, z1), valueCoordinateR3(seed, x2, y1, z1), valueCoordinateR3(seed, x3, y1, z1), xs), lerpCubic(valueCoordinateR3(seed, x0, y2, z1), valueCoordinateR3(seed, x1, y2, z1), valueCoordinateR3(seed, x2, y2, z1), valueCoordinateR3(seed, x3, y2, z1), xs), lerpCubic(valueCoordinateR3(seed, x0, y3, z1), valueCoordinateR3(seed, x1, y3, z1), valueCoordinateR3(seed, x2, y3, z1), valueCoordinateR3(seed, x3, y3, z1), xs), ys), lerpCubic(lerpCubic(valueCoordinateR3(seed, x0, y0, z2), valueCoordinateR3(seed, x1, y0, z2), valueCoordinateR3(seed, x2, y0, z2), valueCoordinateR3(seed, x3, y0, z2), xs), lerpCubic(valueCoordinateR3(seed, x0, y1, z2), valueCoordinateR3(seed, x1, y1, z2), valueCoordinateR3(seed, x2, y1, z2), valueCoordinateR3(seed, x3, y1, z2), xs), lerpCubic(valueCoordinateR3(seed, x0, y2, z2), valueCoordinateR3(seed, x1, y2, z2), valueCoordinateR3(seed, x2, y2, z2), valueCoordinateR3(seed, x3, y2, z2), xs), lerpCubic(valueCoordinateR3(seed, x0, y3, z2), valueCoordinateR3(seed, x1, y3, z2), valueCoordinateR3(seed, x2, y3, z2), valueCoordinateR3(seed, x3, y3, z2), xs), ys), lerpCubic(lerpCubic(valueCoordinateR3(seed, x0, y0, z3), valueCoordinateR3(seed, x1, y0, z3), valueCoordinateR3(seed, x2, y0, z3), valueCoordinateR3(seed, x3, y0, z3), xs), lerpCubic(valueCoordinateR3(seed, x0, y1, z3), valueCoordinateR3(seed, x1, y1, z3), valueCoordinateR3(seed, x2, y1, z3), valueCoordinateR3(seed, x3, y1, z3), xs), lerpCubic(valueCoordinateR3(seed, x0, y2, z3), valueCoordinateR3(seed, x1, y2, z3), valueCoordinateR3(seed, x2, y2, z3), valueCoordinateR3(seed, x3, y2, z3), xs), lerpCubic(valueCoordinateR3(seed, x0, y3, z3), valueCoordinateR3(seed, x1, y3, z3), valueCoordinateR3(seed, x2, y3, z3), valueCoordinateR3(seed, x3, y3, z3), xs), ys), zs) *
        (1 / (1.5 * 1.5 * 1.5)));
}