Noise

Overview

Procedural noise generation with Perlin and Voronoi noise in 2D and 3D.

Why Use This?

Noise functions are essential for procedural terrain, texture generation, particle effects, cloud rendering, and organic-looking randomness.

Functions

Perlin Noise

Classic gradient noise that produces smooth, continuous values.

Function	Description
lm2_perlin2_f32(x, y)	2D Perlin noise
lm2_perlin3_f32(x, y, z)	3D Perlin noise

Returns: Value in [-1, 1].

Voronoi Noise

Cell-based noise returning the Euclidean distance to the nearest feature point.

Function	Description
lm2_voronoi2_f32(x, y)	2D Voronoi noise
lm2_voronoi3_f32(x, y, z)	3D Voronoi noise

Returns: Euclidean distance to nearest feature point.

All functions also available in _f64 variants.

Example

// Generate a terrain heightmap
for (int y = 0; y < height; y++) {
    for (int x = 0; x < width; x++) {
        float h = lm2_perlin2_f32(x * 0.01f, y * 0.01f);
        heightmap[y * width + x] = h;
    }
}