Wwise SDK 2018.1.11

Portal's position and orientation in the 3D world. Position vector is the center of the opening. OrientationFront vector must be unit-length and point along the normal of the portal, and must be orthogonal to Up. It defines the local positive-Z dimension (depth/transition axis) of the portal, used by Extent. OrientationTop vector must be unit-length and point along the top of the portal (tangent to the wall), must be orthogonal to Front. It defines the local positive-Y direction (height) of the portal, used by Extent.

在文件 AkSpatialAudio.h 第 367 行定义.