ScriptReference/ObjectChangeEvents-changesPublished

[giscus[bot]]

ScriptReference/ObjectChangeEvents-changesPublished

https://docs.unity3d.com/ScriptReference/ObjectChangeEvents-changesPublished.html

[andreasIsCoding]

As per Dawdlebird's post, this event can be used to get a transform that has changed:

    void Initialize()
    {
        UnityEditor.ObjectChangeEvents.changesPublished += OnChangesPublished;    // detect scene object changes
    }
     
    void OnChangesPublished(ref ObjectChangeEventStream stream)
    {
        for (int i = 0; i < stream.length; ++i)
        {
            // component has changed
            if (stream.GetEventType(i) == ObjectChangeKind.ChangeGameObjectOrComponentProperties)
            {
                stream.GetChangeGameObjectOrComponentPropertiesEvent(i, out var data);
     
                if (EditorUtility.InstanceIDToObject(data.instanceId) is Transform transform)
                {
                    // do stuff with transform
                }
            }
        }
    }

Original post: https://forum.unity.com/threads/transform-position-change-callback.746360/#post-9609740
In my own testing, this code takes less than 1ms in editor to run when a transform is being changed dragged in scene.