Cesium Utils - v0.3.8
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    Class SunlightExperimental

    Cesium 1.132.0

    Point sunlight analysis utility for shadow calculations.

    ⚠️ Warning: This is an experimental feature that uses Cesium's internal APIs. The API may change or break in future versions of Cesium or cesium-utils.

    const sunlight = new Sunlight(viewer);
    sunlight.analyze(point, JulianDate.now());
    Index

    Constructors

    constructor

    Properties

    _analyzing _debugEntityIds _pointEntityId? _sunDirectionWC _sunPositionWC _viewer

    Accessors

    isAnalyzing sunDirectionWC sunPositionWC

    Methods

    _analyzeSingleTime _analyzeTimeRange _createPointEntity _getExcludedObjects analyze clear getVirtualSunPosition

    Constructors

    Properties

    Private Experimental_analyzing

    _analyzing: boolean = false

    Private Experimental_debugEntityIds

    _debugEntityIds: string[] = []

    Private Optional Experimental_pointEntityId

    _pointEntityId?: string

    Private Experimental_sunDirectionWC

    _sunDirectionWC: Cartesian3

    Private Experimental_sunPositionWC

    _sunPositionWC: Cartesian3

    Private Experimental_viewer

    _viewer: Viewer

    Accessors

    • get isAnalyzing(): boolean
      Experimental

      Whether sunlight analysis is currently in progress.

      Returns boolean

    • get sunDirectionWC(): Cartesian3
      Experimental

      A normalized vector to the sun in 3D world coordinates at the current scene time.

      Returns Cartesian3

    • get sunPositionWC(): Cartesian3
      Experimental

      The sun position in 3D world coordinates at the current scene time.

      Returns Cartesian3

    Methods

    Private_analyzeSingleTime

    Private_analyzeTimeRange

    Private_createPointEntity

    • _createPointEntity(
          at: Cartesian3,
          show?: boolean,
          errorBoundary?: number,
      ): Entity
      Experimental

      Create a point entity for collision detection

      Parameters

      • at: Cartesian3

        where to create the entity

      • Optionalshow: boolean

        whether to show point entity

      • OptionalerrorBoundary: number

        size of the point entity for error tolerance

      Returns Entity

    Private_getExcludedObjects

    • _getExcludedObjects(objectsToExclude?: any[]): any[]
      Experimental

      Parameters

      • OptionalobjectsToExclude: any[]

      Returns any[]

    • Experimental

      Gets a virtual position of the sun to reduce calculation overhead.

      Parameters

      • from: Cartesian3

        target point to start from

      • radius: number = 1000

        virtual distance between target point and the sun. Defaults to 1000 (1km)

      Returns Cartesian3

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