Generates a two-dimensional noise field isolated to width and height (non-continuous noise).

May 23, 2015 · float fl = floor(p); float fc = fract(p); return mix(rand(fl), rand(fl + 1.0), fc); const vec2 d = vec2(0.0, 1.0); vec2 b = floor(n), f = smoothstep(vec2(0.0), vec2(1.0), fract(n)); return mix(mix(rand(b), rand(b + d.yx), f.x), mix(rand(b + d.xy), rand(b + d.yy), f.x), f.y); return fract(sin(dot(n, vec2(12.9898, 4.1414))) * 43758.5453);

var noise = require ("noise3d"); var perlin = noise. createPerlin ({interpolation: noise. interpolation. linear, permutation: noise. array. shuffle (noise. array. range (0, 255), Math. random)}); var brownian = noise. createBrownianMotion ({octaves: 4, persistence: 0.5, noise: perlin}); for (var x = 0; x < 512; x ++) {for (var y = 0; y < 512; y ...

May 2, 2020 · The really cool thing about SDFs is how easy it is to distort the surface by just addding some noise to the SDF. So lets slap some fractal brownian motion (fBM) noise ontop using the position to index into the noise function.

Dec 28, 2021 · A proof of concept to render 3D noise sliced into rows of a 2D texture. For effects like fog, clouds sand storms etc. Have a play with the codesandbox and change the settings!

May 27, 2024 · We need to compute how much light reaches the primary ray sample (along the secondary ray), how much of that light is scattered towards the observer, and how much of that light reaches the observer. Luckily, these functions are more or less well established.

I've built a javascript app that renders Perlin and Simplex noise to an HTML5 canvas, check it out here: http://lencinhaus.github.io/canvas-noise The app allows you to tweak every parameter involved in noise calculation and rendering and to save the resulting texture.

TypeScript implementation of OpenSimplex noise. For fractal noise results, which typically involves scaling frequencies and stacking octaves, see joshforisha/fractal-noise-js (Deno: fractal_noise, NPM: fractal-noise). The functions there can be used with this library's noise algorithm to obtain varied results like the following:

Generates a two-dimensional noise field formed around a three-dimensional cylinder, such that it is continuous across the x-boundaries. makeLine(length, noise1, options?): number[] length: number

Mar 27, 2021 · Very quickly the explanation is this.. for every pixel we fire a ray out into 3D space, when this ray hits an object (defined by our SDF function) we start to calculate colours, densities and lighting.