Transform.up doesnt give me it´s local up position

Question

When I write this:

Debug.DrawLine(firstPos.position, -firstPos.up * 5, Color.red, 1);

It doesn´t go to the actual up position from the game object. It goes to the origin´s up position.

How do I get the actual up position?

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Answer by TreyH · Mar 05, 2019 at 08:00 PM

Lines require start and end points, not points and directions:

 Debug.DrawLine(firstPos.position, firstPos.position + firstPos.up * 5, Color.red, 1);

From Owen's comment, you already have the Debug.DrawRay syntax there, so you can alternatively just replace DrawLine with DrawRay:

 Debug.DrawRay(firstPos.position, -firstPos.up * 5, Color.red, 1);

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Owen-Reynolds · Mar 05, 2019 at 08:31 PM 1

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But note that raycasts work like what the OP wrote: a start position and a direction. Debug.DrawLine is just weird. You're almost always using it to test a raycast, or a velocity, but it works backwards from them.

TreyH Owen-Reynolds · Mar 05, 2019 at 08:34 PM 0

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updated, ty

A-7r3Dy · Mar 05, 2019 at 08:58 PM 1

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thank you guys!

Transform.up doesnt give me it´s local up position

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