[SOLVED] How to set Local angular velocity?

I found lot's of info hot to retrieve it:

Code (CSharp):

1.      Vector3 localAngularVelocity = target.transform.InverseTransformDirection(target.rigidbody.angularVelocity);
2.  
3. //localAngularVelocity.x is the target's Pitch,
4.  
5. //localAngularVelocity.y is the target's Yaw,
6.  
7. //localAngularVelocity.z is the target's Roll,
8.  
9. //assuming the target's forward is aligned with its z axis.

But what I really want is to set local Pitch, Yaw, Roll and convert it to variables for

Code (CSharp):

1. gameObject.GetComponent<Rigidbody>().angularVelocity = ...

to compliment the rolling direction. Any ideas?

 

You can set it, but they do advise that it "can result in unrealistic behavior" in the docs:

https://docs.unity3d.com/ScriptReference/Rigidbody-angularVelocity.html

If you want to spin something at 1 rad / second down the Z axis, set the angularVelocity to Vector3.forward.

The direction of the vector is the axis of the rotation, and the magnitude is the speed of rotation.

Put this on a cube in your scene and watch the cube:

Code (csharp):

1. using UnityEngine;
2.  
3. public class SpinMeWithAngularVelocity : MonoBehaviour
4. {
5.     void Start()
6.     {
7.         var rb = gameObject.AddComponent<Rigidbody>();
8.         rb.useGravity = false;        // don't fall
9.         rb.angularVelocity = Vector3.forward * 1.0f;    // spin around +Z at 1rad/sec
10.         rb.angularDrag = 0.0f;        // don't slow
11.     }
12. }

 

Your example doesn't really answer or solve my question. It still rolling in world space. And the link is totally different topic (about physical materials).

 

From where I stand it appears I linked you to angularVelocity. That doesn't have anything to do with physical materials but rather with ... wait for it ... the angularVelocity property on a Rigidbody.

Good luck sir!

 

https://docs.unity3d.com/ScriptReference/Rigidbody.AddRelativeTorque.html

 

Is there something like this to get a "relative" angular velocity?

 

rb.angularVelocity = Vector3.forward * 1.0f; // spin around +Z at 1rad/sec
I think this line of code should be changed to:
rb.angularVelocity = gameObject.transform.forward * 1.0f; // spin around +Z at 1rad/sec

 

var localAV = Quaternion.Inverse(transform.rotation) * GetComponent<Rigidbody>().angularVelocity;

 

//get Vector to local Space (even though angular velocity is no Vector3, but 3 values for x,y,z angular velocity)
Vector3 localAngularVelocity = target.transform.InverseTransformDirection(target.rigidbody.angularVelocity);
localAngularVelocity.z += 1; //local forward
target.rigidbody.angularVelocity = target.transform.TransformDirection(localAngularVelocity); //transform it back

what you actually should do to make it work better with Unity Physics, in case it fits you needs:

Vector3 myAddedVelocity;
target.rb.AddRelativeTorque(velocity * Vector3.forward, ForceMode.velocity); // instant change in velocity around local axis
//should be same as:
target.rb.AddTorque(velocity * target.transform.forward, ForceMode.velocity);