Terrain Flythrough
Overview
This showcase generates an infinite 3D landscape entirely from math — no textures, no models, no assets downloaded. A flat grid mesh is displaced by layered noise to create mountains and valleys, colored by height, and lit with directional lights. The camera flies forward as you scroll, giving a drone-like flyover experience.
Technical Approach
Noise Heightmap
Five octaves of value noise (fractal Brownian motion) displace each vertex of a PlaneGeometry along the Y axis. Lower frequencies create broad hills; higher frequencies add crags and ridges. A center-weighted falloff carves a valley along the flight path.
Height-Based Vertex Coloring
Each vertex is colored based on its height: deep teal for valleys, mid-teal for slopes, bright cyan for ridges, and near-white for peaks. The colors are baked into a vertex color attribute — no textures needed. Combined with flatShading: true, this gives the classic low-poly aesthetic.
Infinite Terrain
Two terrain strips leapfrog ahead of the camera. As the camera crosses a strip boundary, the rear strip repositions in front. The noise function is deterministic, so the same coordinates always produce the same terrain — no popping or discontinuities.
Real-World Applications
Real Estate Development
Developers use terrain flythroughs to show future building sites in context — elevation, surrounding landscape, views from different floors — before a single shovel hits dirt.
Tourism & National Parks
Destination marketing organizations let visitors virtually fly over trails, coastlines, and mountain ranges. Interactive terrain replaces static drone footage with explorable 3D.
Environmental & Climate Visualization
Researchers visualize sea level rise, deforestation, and terrain change over time. Scroll-driven camera movement lets viewers experience the data spatially.
Gaming & Entertainment Previews
Game studios and metaverse platforms use terrain generation to preview open-world environments. Procedural generation means infinite unique landscapes for marketing.