Use Euler angles for Quaternion variable in the Inspector

Questions & Answers
1

I have a Quaternion variable that I declared as public so I could edit it through the inspector. But since I don’t know how quaternions work, I would like to us Euler angles. Is there a way to have the editor show the values in Euler rather than quaternion?

2

I would recommend creating a custom PropertyAttribute and PropertyDrawer.

For example, given a PropertyAttribute like this:

using UnityEngine;

public class EulerAnglesAttribute : PropertyAttribute {}

You could create a PropertyDrawer like this:

using UnityEditor;
using UnityEngine;

[CustomPropertyDrawer(typeof(EulerAnglesAttribute))]
public class EulerAnglesDrawer : PropertyDrawer {
	public override float GetPropertyHeight(SerializedProperty property, GUIContent label) {
		return EditorGUIUtility.singleLineHeight * (EditorGUIUtility.wideMode ? 1f : 2f);
	}

	public override void OnGUI(Rect position, SerializedProperty property, GUIContent label) {
		Vector3 euler = property.quaternionValue.eulerAngles;
		EditorGUI.BeginProperty(position, label, property);
		EditorGUI.BeginChangeCheck();
			euler = EditorGUI.Vector3Field(position, label, euler);
		if (EditorGUI.EndChangeCheck())
		property.quaternionValue = Quaternion.Euler(euler);
		EditorGUI.EndProperty();
	}
}

You would then decorate your field like this:

using UnityEngine;

public class MyComponent : MonoBehaviour {
    [SerializeField, EulerAngles]
    Quaternion m_Orientation;
}