ConfigurableJoint.angularXMotion 绕X轴旋转
var angularXMotion : ConfigurableJointMotion
Description描述
Allow rotation around the X axis to be Free, completely Locked, or Limited according to Low and High Angular XLimit
根据 Low和High Angular XLimit，允许沿着X轴旋转以Free、完全Locked或Limited方式。
