TerrainGenerator.html.md 1.3 KB
TerrainGenerator
Bakes a procedural mountain range into a single THREE.BufferGeometry and returns a THREE.Group ready to add to a scene.
The heightfield is a derivative-damped fractal sum ( Quilez's fake erosion ): each octave is suppressed where the running slope is already steep, concentrating detail into weathered ridgelines, and a low-frequency domain warp makes those ridges meander. A few passes of thermal ( talus ) erosion then relax any slope past the angle of repose, settling the fractal's needle-spikes into real crests.
The grid is triangulated with alternating quad diagonals ( a diamond pattern ), so a coarse mesh holds its silhouette without a one-way grain. The surface shades itself from altitude and slope in TSL — grass, forest, rock, scree and snow, with detail normals and aerial perspective — so no material or textures are needed.
The baked height grid is exposed through TerrainGenerator#sampleHeight so a scattered forest ( or anything else ) can sit exactly on the surface.
Code Example
const terrain = new TerrainGenerator( { seed: 1 } );
scene.add( terrain.build() );