/// <summary>
/// Calculates and returns the object selection boxes for the specified object selection.
/// </summary>
/// <remarks>
/// The method returns only those selection boxes whose model space box is set to
/// a valid 'Bounds' instance.
/// </remarks>
public override List <ObjectSelectionBox> CalculateForObjectSelection(HashSet <GameObject> selectedObjects)
{
var objectSelectionBoxes = new List <ObjectSelectionBox>(selectedObjects.Count);
// We will need to calculate the selection boxes for the hierarchies to which the objects belong,
// so we will first retrieve all root objects.
var objectRoots = GameObjectExtensions.GetRootObjectsFromObjectCollection(selectedObjects);
// Loop through all root objects
foreach (GameObject rootObject in objectRoots)
{
// Retrieve the hierarchy's model space AABB and if it is valid, create a new
// object selection box and add it to the output list.
Box hierarchyModelSpaceBox = rootObject.GetHierarchyModelSpaceBox();
if (hierarchyModelSpaceBox.IsValid())
{
objectSelectionBoxes.Add(new ObjectSelectionBox(hierarchyModelSpaceBox, rootObject.transform.localToWorldMatrix));
}
}
return(objectSelectionBoxes);
}
/// <summary>
/// Handles the game objects entered selection shape event. The method returns true if the
/// object selection has changed after the event was handled and false otherwise.
/// </summary>
public override bool Handle(List <GameObject> gameObjects)
{
EditorObjectSelection editorObjectSelection = EditorObjectSelection.Instance;
// We will need to select the entire hierarchy of all objects which were
// passed as parameter. We will start by identifying the roots/top parents
// of all those objects and store them in a hash set to easily avoid duplicates.
var objectRoots = GameObjectExtensions.GetRootObjectsFromObjectCollection(gameObjects);
// Now, we need to construct the final object list which will be used to perform the
// necessary actions (i.e. select or deselect). We do this by adding the hierarchies
// of all root objects that we identified earlier to the same object list.
var finalObjectsList = new List <GameObject>();
foreach (GameObject rootObject in objectRoots)
{
finalObjectsList.AddRange(rootObject.GetAllChildrenIncludingSelf());
}
// If multi-object deselection is enabled, we will deselect the game objects which were intersetced by the selection shape
if (editorObjectSelection.MultiDeselect)
{
return(editorObjectSelection.DeselectGameObjectCollection(finalObjectsList));
}
else
// If append is enabled, we will append the objects to the selection
if (editorObjectSelection.AppendOrDeselectOnClick)
{
return(editorObjectSelection.SelectGameObjectCollection(finalObjectsList));
}
// If non of the above, we will clear the selection and make sure that only the specified collection of objects is selected
else
{
return(editorObjectSelection.ClearAndSelectGameObjectCollection(finalObjectsList));
}
}
