@urban-toolkit/autk-core

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@urban-toolkit/autk-core / TriangulatorBuildings

Class: TriangulatorBuildings

Defined in: triangulator-buildings.ts:40

Builds extruded mesh geometry for OSM-style buildings.

Each feature contains original component geometries associated with properties.parts[].geometryIndex (legacy positional metadata is accepted). Parts inherit building attributes and override them individually. For every supported part geometry, the triangulator converts world coordinates into local XY space, resolves wall heights from part metadata, and emits mesh chunks with feature component counts. Roof geometry is delegated to triangulator-roofs.

Example

const [mesh, components] = TriangulatorBuildings.buildMesh(buildings, origin);

Constructors

Constructor

new TriangulatorBuildings(): TriangulatorBuildings

Returns

TriangulatorBuildings

Methods

buildMesh()

static buildMesh(geojson, origin, allowZeroHeightBuildings?): [LayerGeometry[], LayerComponent[]]

Defined in: triangulator-buildings.ts:54

Builds extruded building geometry for an OSM-style building collection.

Parameters

geojson

FeatureCollection

Source building feature collection.

origin

number[]

World-space origin used to convert coordinates into local XY space.

allowZeroHeightBuildings?

boolean = false

When true, parts with missing height tags get a random fallback height. Explicit zero or invalid height tags are never replaced by that fallback.

Returns

[LayerGeometry[], LayerComponent[]]

A tuple of mesh chunks and per-feature component metadata.

Throws

If building geometries or part indices are unsupported or ambiguous. Parts without height metadata are skipped (or given fallback height).

Example

const [meshes, comps] = TriangulatorBuildings.buildMesh(buildingsFC, origin);