internal static void Place(GameObject go, GameObject parent, bool ignoreSceneViewPosition = true)
{
Transform defaultObjectTransform = SceneView.GetDefaultParentObjectIfSet();
if (parent != null)
{
// At this point, RecordStructureChange is already ongoing (from the CreatePrimitive call through the CreateAndPlacePrimitive method). We need to flush the stack to finalise the RecordStructureChange before the
// following SetTransformParent call takes place.
Undo.FlushTrackedObjects();
SetGameObjectParent(go, parent.transform);
}
else if (defaultObjectTransform != null)
{
// At this point, RecordStructureChange is already ongoing (from the CreatePrimitive call through the CreateAndPlacePrimitive method). We need to flush the stack to finalise the RecordStructureChange before the
// following SetTransformParent call takes place.
Undo.FlushTrackedObjects();
SetGameObjectParent(go, defaultObjectTransform);
}
else
{
// When creating a 3D object without a parent, this option puts it at the world origin instead of scene pivot.
if (placeObjectsAtWorldOrigin)
{
go.transform.position = Vector3.zero;
}
else if (ignoreSceneViewPosition)
{
SceneView.PlaceGameObjectInFrontOfSceneView(go);
}
StageUtility.PlaceGameObjectInCurrentStage(go); // may change parent
}
// Only at this point do we know the actual parent of the object and can modify its name accordingly.
GameObjectUtility.EnsureUniqueNameForSibling(go);
Undo.SetCurrentGroupName("Create " + go.name);
var sh = SceneHierarchyWindow.GetSceneHierarchyWindowToFocusForNewGameObjects();
if (sh != null)
{
sh.Focus();
}
Selection.activeGameObject = go;
}
internal static void CreateEmptyParent()
{
Transform[] selected = Selection.transforms;
GameObject defaultParentObject = SceneView.GetDefaultParentObjectIfSet()?.gameObject;
string defaultParentObjectSceneGUID = defaultParentObject?.scene.guid;
// Clear default parent object so we could always reparent and move the new parent to the scene we need
if (defaultParentObject != null)
{
SceneHierarchy.ClearDefaultParentObject(defaultParentObjectSceneGUID);
}
// If selected object is a prefab, get the its root object
if (selected.Length > 0)
{
for (int i = 0; i < selected.Length; i++)
{
if (PrefabUtility.GetPrefabAssetType(selected[i].gameObject) != PrefabAssetType.NotAPrefab)
{
selected[i] = PrefabUtility.GetOutermostPrefabInstanceRoot(selected[i].gameObject).transform;
}
}
}
// Selection.transform does not provide correct list order, so we have to do it manually
selected = selected.ToList().OrderBy(g => g.GetSiblingIndex()).ToArray();
GameObject go = ObjectFactory.CreateGameObject("GameObject");
if (Selection.activeGameObject == null && Selection.gameObjects != null)
{
Selection.activeGameObject = Selection.gameObjects[0];
}
if (Selection.activeGameObject != null)
{
go.transform.position = Selection.activeGameObject.transform.position;
}
GameObject parent = Selection.activeTransform != null ? Selection.activeTransform.gameObject : null;
Transform sibling = null;
if (parent != null)
{
sibling = parent.transform;
parent = parent.transform.parent != null ? parent.transform.parent.gameObject : null;
}
Place(go, parent, false);
var rectTransform = go.GetComponent <RectTransform>();
// If new parent is RectTransform, make sure its position and size matches child rect transforms
if (rectTransform != null && selected != null && selected.Length > 0)
{
CenterRectTransform(selected, rectTransform);
}
if (parent == null && sibling != null)
{
Undo.MoveGameObjectToScene(go, sibling.gameObject.scene, "Move To Scene");
}
if (parent == null && sibling == null)
{
go.transform.SetAsLastSibling();
}
else
{
go.transform.MoveAfterSibling(sibling, true);
}
// At this point, RecordStructureChange is already ongoing (from the CreateGameObject call).
// We need to flush the stack to finalise the RecordStructureChange before any of following SetTransformParent calls takes place.
Undo.FlushTrackedObjects();
// Put gameObjects under a created parent
if (selected.Length > 0)
{
foreach (var gameObject in selected)
{
if (gameObject != null)
{
Undo.SetTransformParent(gameObject.transform, go.transform, "Reparenting");
gameObject.transform.SetAsLastSibling();
}
}
SceneHierarchyWindow.lastInteractedHierarchyWindow.SetExpanded(go.GetInstanceID(), true);
}
// Set back default parent object if we have one
if (defaultParentObject != null)
{
SceneHierarchy.UpdateSessionStateInfoAndActiveParentObjectValuesForScene(defaultParentObjectSceneGUID, defaultParentObject.GetInstanceID());
}
}
