kotlin-cesium-engine/cesium.engine/BufferPolyline

BufferPolyline

open external class BufferPolyline : BufferPrimitive(source)

View bound to the underlying buffer data of a BufferPolylineCollection.

BufferPolyline instances are flyweights: a single BufferPolyline instance can be temporarily bound to any conceptual "polyline" in a BufferPolylineCollection, allowing very large collections to be iterated and updated with a minimal memory footprint.

Represented as two (2) or more positions.

Constructors

BufferPolyline

constructor()

Types

Companion

external object Companion

Properties

featureId

external var featureId: Int

Feature ID associated with the primitive; not required to be unique.

show

external var show: Boolean

Whether primitive is shown.

vertexCount

external val vertexCount: Double

Count of positions (vertices) in this polyline, number of VEC3 elements.

Functions

getMaterial

external fun getMaterial(result: BufferPrimitiveMaterial): BufferPrimitiveMaterial

getPositions

external fun getPositions(result: TypedArray<*, *, *, *>? = definedExternally)

Returns an array view of this polyline's vertex positions. If 'result' argument is given, vertex positions are written to that array and returned. Otherwise, returns an ArrayView on collection memory — changes to this array will not trigger render updates, which requires .setPositions().

setMaterial

external fun setMaterial(material: BufferPrimitiveMaterial)

setPositions

external fun setPositions(positions: TypedArray<*, *, *, *>)

toJSON

open external override fun toJSON(): JsAny

Returns a JSON-serializable object representing the polyline. This encoding is not memory-efficient, and should generally be used for debugging and testing.

BufferPolyline

See also

Constructors

Types

Properties

Functions