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Procedural Terrain Generator — fBm Noise, Interactive 3D
Generate procedural terrain using fractional Brownian motion (fBm) — layered noise octaves at increasing frequency and decreasing amplitude, the same technique behind terrain generation in games and simulations — and explore the result as an interactive 3D topography grid rather than a flat heightmap image.
How to use Procedural Terrain Generator
- Adjust noise parameters — octaves, persistence, lacunarity.
- Watch the terrain regenerate in real time.
- Explore the result in the interactive 3D view.
- Export or screenshot the terrain you land on.
Frequently asked questions
- What is fractional Brownian motion in this context?
- Layering multiple octaves of noise at increasing frequency and decreasing amplitude, so large-scale features (mountains, valleys) and small-scale detail (roughness) both emerge from the same underlying noise function.
- What do octaves, persistence and lacunarity control?
- Octaves set how many noise layers are combined; persistence controls how much each successive octave contributes; lacunarity controls how much its frequency increases — together they shape how rough or smooth the terrain looks.
- Is this the same technique games use for terrain?
- Yes — fBm/Perlin-style noise layering is a standard procedural terrain technique used across game development for exactly this reason: realistic-looking results from a small, tunable parameter set.
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