How to degree 90 rotation once.

Questions & Answers
1

I useed TweenRotation in NGUI.But I can’t control the direction.

2

TweenRotation has two public fields:

to typeof Vector3

from typeof Vector3

You should be able to set your rotation values in the from(current rotation as Vector3) and where you want to end up, whether that is in the plus or minus of an axis.