Translate Vector3 by Vector3

Question

I have a vector position and a vector that i need to translate the position by.

I know of transform.Translate(vector, relative);

How can I translate the vector in a similar fashion?

Answer 1

Best Answer

Answer by Owen-Reynolds · Jun 16, 2013 at 08:50 PM

Something like transform.Translate(0,0,1) takes the rotation into account. So, it's doing a lot of math to figure out where "+1 z" really goes.

But just your position vector doesn't have a facing. That means all math is global, which is easy: A=A+B; or A=A+Vector3.forward;

If you are faking a transform, with a quaternion Q and a vector position A, use: A=A+Q*B;. That will move by a version of B rotated by Q.

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andrew-lukasik · Aug 12, 2013 at 10:01 PM 0

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This works perfectly :) thank you!

fruktoed andrew-lukasik · May 04, 2019 at 07:12 AM 0

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But how about Space.Self and Space.World parameter in this equation?

Owen-Reynolds fruktoed · May 04, 2019 at 08:24 AM 1

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It depends. $$anonymous$$ost people use transform.forward and things like that, for local space.