Feature Request UI Toolkit Quaternion field does not exist

Its quite weird that UI Toolkit does not have a Quaternion field and instead uses a Vector4 field.
Since there is no direct cast from Vector4 to Quaternion this requires special handling, instead of using generic functions for all data fields.
For such a commonly used type there must be an appropriate UI field option.

 

I am struggling about this.

 

I mean if you want euler angles you can just use a Vector3 field. It would be pretty straight forward to make a custom visual element that handles this in a reusable manner.

 

@spiney199 Yep. That was what i did at first thought and made it.
@Kekito
So basically, inside the component which is the Quaternion will be in, just create a Vector3 "hint" value for Quaternion.
Use #if UNITY_EDITOR #endif to make it only work for visualization if you want to but not necessary of course.
With Registercallback<ChangeEvent<TheValueType>> or TrackProperty, you will be able to track the property value changes. Even tho, you can get UXML Element from C# with VisualElement.Q("ID");
After that, inside the callback of registercallback, you will save the vector3 with property.ApplyModifiedProperties(); and set the rotation value by converting the Vector3 to Quaternion by Quaternion.Euler(The new value);

 

I had the same need, hope my code can be usefull for next ones

Code (CSharp):

1.  
2. // related code in CreatePropertyGUI
3. // rotation is a Quaternion SerializedProperty
4. bool isQuaternionLocked = false;
5. Vector3Field rotationField = new();
6. if (rotation.quaternionValue != null) rotationField.value = rotation.quaternionValue.eulerAngles;
7. rotationField.TrackPropertyValue(rotation, (newProp) => // Track Quaternion to Vector3
8. {
9.    if (isQuaternionLocked) return;
10.    isQuaternionLocked = true;
11.    rotationField.value = newProp.quaternionValue.eulerAngles;
12.    isQuaternionLocked = false;
13. });
14. rotationField.RegisterValueChangedCallback((@event) => // Track Vector3 to Quaternion
15. {
16.    if (isQuaternionLocked) return;
17.    isQuaternionLocked = true;
18.    rotation.quaternionValue = Quaternion.Euler(@event.newValue);
19.    rotation.serializedObject.ApplyModifiedProperties();
20.    isQuaternionLocked = false;
21. });
22.