avoidanceManager
avoidanceManager: AvoidanceManager
billboardCollection
billboardCollection: ScreenObjectPool<Billboard>
canvasCollection
canvasCollection: CustomCollection = ...
collectionMap
collectionMap: Record<"label" | "billboard" | "customObject", any>
customObjectCollection
customObjectCollection: CustomCollection = ...
czmViewer
labelCollection
labelCollection: ScreenObjectPool<Label>
layers
layers: Map<string, ScreenLayer> = ...
viewer
viewer: Viewer
静态_lastMemId
_lastMemId: number
集合映射,方便统一处理