Rotating from local axis.

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1

v4.2.2.stable.mono.official [15073afe3]

I’ve been looking for an answer for something more general rather than to something specific, but couldn’t find anything so I am asking here.

extends Node3D

var speed : Vector3 = Vector3(0, 50, 0)

func _process(delta):
	rotation_degrees += speed * delta

This is what I’ve come up with, I wanted to attach a video of how it behaves but apparently new users can’t attach files.

Just imagine a slanted ball where the slant angle rotates.

The behavior I want is where the slant angle stays in the same direction but the ball rotates in the new angle - local axis rotation, I believe is the right terminology.

Again, this is more of a general question, because I want to animate things but this specific behavior I’ve found hard to animate smoothly - manually keeping the angle in the same direction looks all wobbly.

I am not sure if this should be obvious or not so I apologize if it is.

Thanks in advance.

2

If I understand this correctly, you want to axes for your ball rotation.
For this, you could use another node for separating two rotation axes (/pivots).

so instead of having e.g. the following hierarchy

Parent
→ Ball

you would have

Parent
→ RotationAxis
→ → Ball

Now you can rotate the new axis and the ball would rotate around the axis. Hope this is what you are looking for?

3

Wow! That actually worked! It was really that simple!

Thank you so much - hopefully this will help others who had the same problem I had.

Have a hopefully nice day! Again, thank you so much!!

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