Class SceneNodeIndex

constructor

• new SceneNodeIndex(root: SceneNode): SceneNodeIndex

  Parameters

  • root: SceneNode

  Returns SceneNodeIndex

Readonlyroot

size

• get size(): number

  Number of distinct indexed paths.

  Returns number

get

• get(path: string): IndexedSceneNode | undefined

  The indexed node at path, or undefined.

  Parameters

  • path: string

  Returns IndexedSceneNode | undefined

node

• node(path: string): SceneNode | null

  The node at path, or null.

  Parameters

  • path: string

  Returns SceneNode | null

worldNdTransform

• worldNdTransform(path: string): NdTransformMap

  World nD transform at path (identity for an unknown path).

  Parameters

  • path: string

  Returns NdTransformMap

ancestors

• ancestors(path: string): readonly SceneNode[] | undefined

  Root → node chain for path (see IndexedSceneNode.ancestors), or undefined for a path the graph does not hold.

  Parameters

  • path: string

  Returns readonly SceneNode[] | undefined

ancestorChain

• ancestorChain(path: string): readonly SceneNode[]

  collectAncestorNodes(root, path), answered from the index: O(1) for an indexed path. A path the graph does not hold, and the composer's empty "nothing requested" path, fall back to the descent so the answer is identical in every case.

  Parameters

  • path: string

  Returns readonly SceneNode[]

hasNdTransform

• hasNdTransform(path: string): boolean

  Whether the world nD transform at path is not the identity.

  Parameters

  • path: string

  Returns boolean