Apply drag on local axis

Question

I need to apply drag on the Y and X local axis of a rigidbody. Now I'm doing it this way:

rigidbody.velocity *= 0.985;

I know it applies drag on all axis, but if I do it this way:

rigidbody.velocity.x *= 0.985;

It will apply drag on the X axis in world coordinates. ¿How could I apply drag on local axis?

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Answer by Sisso · Apr 12, 2014 at 02:46 PM

There is many ways to convert from local to world coordinates (you can for it). One of the ways is multiply with object rotation like "transform.rotation * new Vector3(1, 0, 0)"

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DBC · Apr 13, 2014 at 01:22 PM 0

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I finally did it this way:

rigidbody.velocity -= transform.TransformDirection(Vector3(0,0,transform.InverseTransformDirection(rigidbody.velocity).z * 0.015));

Wouldn't it be easier if rigidbody.velocity were in local coords?

Sisso · Apr 14, 2014 at 11:28 PM 0

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Not really, is more commom to operate between objects. But it is more about have a pattern, by default everything is world coordinates.

Your code is not the same that?

 rigidbody.velocity -= transform.forward * 0.015;

Apply drag on local axis

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