Transform a Vector's components to be local to another Vector

Unity Engine
1

Hi,

Vector math question. I have two vectors, a velocity vector v and a forward vector f. I want to know what the velocity vectors components are local to the forward vector…like so…

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Basically, I want to know how much of the velocity vector’s magnitude runs parallel to the forward vector and how much runs perpendicular, or a Z and X component, respectively.

I’m aware that I could just instantiate a transform, make it’s rotation follow the forward axis and use TransformDirection but this has been bugging me for awhile, since it doesn’t seem too complex.

Thanks for any help,

Erik

2

Vector3.Project and fetch the magnitude.

3

Exactly what I was looking for, cheers!