只要对象没有旋转的父对象，就可以像这样围绕世界轴旋转对象:

As long as the object does not have a rotated parent, you can rotate the object around a world axis like so:

object.rotateOnWorldAxis( axis, angle );

axis必须规范化(具有单位长度)； angle以弧度为单位.

axis must be normalized (have unit length); angle is in radians.

three.js r.92

three.js r.92