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Question by NinjaSquirrel · Jul 05, 2011 at 09:21 AM · angle

Does Unity have a built-in function for calculating the angle between two vectors

Is there a function I can use with unity or .NET or whatever that allows me to calculate the angle between two Vector2s?

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Answer by aldonaletto · Jul 05, 2011 at 09:30 AM

Vector3.Angle (from : Vector3, to : Vector3) : float
(read this)

EDITED: Shame on me! You're asking for a Vector2 operation, not Vector3!
But you're a lucky guy: there's a 2D version too:

Vector2.Angle (from:Vector2, to:Vector2): float;
(read this for 2D version)

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Answer by GuyTidhar · Jul 05, 2011 at 09:27 AM

You can do the following to calculate it:

 Mathf.Acos( Vector3.Dot(vector1.normalized, vector2.normalized) );
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