实验性
An enum describing the relativity of the CompoundBlockVolumeItem, relative to the parent CompoundVolume.
一个枚举类型，用于描述CompoundBlockVolumeItem 相对于父CompoundVolume的相对位置。
The locations within the associated BlockVolume are in absolute world space
关联的BlockVolume中的位置处于绝对世界空间中。
The locations within the associated BlockVolume are relative to the CompoundBlockVolume to which they were added
关联的BlockVolume中的位置是相对于它们被添加到的 CompoundBlockVolume。
An enum describing the relativity of the CompoundBlockVolumeItem, relative to the parent CompoundVolume.
一个枚举类型，用于描述CompoundBlockVolumeItem 相对于父CompoundVolume的相对位置。