| BaseMaterial | The base terrain material resource (if available) |
| BaseTextureId | The base (primary) material index at this position |
| BlendFactor | Blend factor between base and overlay (0-1, where 0 = full base, 1 = full overlay) |
| IsHole | Whether this position is marked as a hole |
| OverlayMaterial | The overlay terrain material resource (if available) |
| OverlayTextureId | The overlay (secondary) material index at this position |
| GetDominantMaterial | Gets the dominant material at this position based on blend factor |
| GetDominantMaterialIndex | Gets the dominant material index at this position based on blend factor |