Function raycastHeight

raycastHeight(
    sample: HeightFn,
    origin: Vector3,
    dir: Vector3,
    maxDistance?: number,
    step?: number,
): Vector3 | null
Intersects a ray with a height function by ray-marching then bisecting. Works for baked meshes and procedural terrain alike (used by TerrainPainter).
Parameters
- sample: HeightFn
- origin: Vector3
- dir: Vector3
  Normalised ray direction.
- maxDistance: number = 2000
- step: number = 0.5
  March step in metres; smaller catches thinner ridges.
Returns Vector3 | null
The hit point (a new Vector3), or null.
- Defined in terrain.ts:112