How to make velocity not in world space

[remote rune]

When I shake my hand left to right infront of me, my velocity will be changing a lot on one axis. But If I turn ninety degrees, it will change highly on a different axis. Is there a way to get just left to right hand velocity?

[modern marten]

If you want to get hand velocity RELATIVE to the hand, you rotate the hand velocity by the inverse of the hand rotation using Quaternion Inverse and Rotate Vector

you can also get hand velocity relative to you by rotating by the inverse of your rotation

• Get Rotation = relative to your head, excluding Y axis rotation
• Player Get Head Rotation = relative to your head
• Player Get Camera Rotation = relative to your camera
• Player Get Gaze Rotation = relative to your head but without being affected by view bobbing etc

[remote rune]

tysm man, it works

one more thing

how would I get a players left direciton

like if there was a vector in their ear

going out

[modern marten]

Rotate the vector (-1,0,0) (which is world left) by the things rotation

Btw, these methods work for anything

Want to get left vector of an object? Rotate (-1,0,0) by inverse of object rotation
Want to get the velocity of ThingA relative to ThingB? rotate ThingA's velocity by the inverse of ThingB

[iron apex]

I was thinking of vector cross

It is good ?