//
// Checks the changes in the selected elements and updates the gizmos.
//
private void OnSelectionUpdated(object sender, [NotNull] EntitySelectionEventArgs e)
{
var previousSelection = new HashSet <Entity>(e.OldSelection);
foreach (var childEntity in e.OldSelection.SelectDeep(x => x.Transform.Children.Select(y => y.Entity)))
{
previousSelection.Add(childEntity);
}
var newSelection = new HashSet <Entity>(e.NewSelection);
foreach (var childEntity in e.NewSelection.SelectDeep(x => x.Transform.Children.Select(y => y.Entity)))
{
newSelection.Add(childEntity);
}
previousSelection.ExceptWith(newSelection);
// Update the selection on the gizmo entities
foreach (var previousEntity in previousSelection)
{
UpdateGizmoEntitiesSelection(previousEntity, isSelected: false);
}
foreach (var newEntity in newSelection)
{
UpdateGizmoEntitiesSelection(newEntity, isSelected: true);
}
}
private void SelectionUpdated(object sender, [NotNull] EntitySelectionEventArgs e)
{
var recursiveSelection = new HashSet <Entity>(e.NewSelection);
foreach (var childEntity in e.NewSelection.SelectDeep(x => x.Transform.Children.Select(y => y.Entity)))
{
recursiveSelection.Add(childEntity);
}
editor.Controller.InvokeAsync(() =>
{
// update the selection on the gizmo entities.
selectedEntities.Clear();
selectedEntities.AddRange(recursiveSelection);
});
}
private void UpdateModifiedEntitiesList(object sender, [NotNull] EntitySelectionEventArgs e)
{
EntityWithGizmo = e.NewSelection.LastOrDefault();
if (ActiveTransformationGizmo != null && EntityWithGizmo == null)
{
// Reset the transformation axes if the selection is cleared.
ActiveTransformationGizmo.ClearTransformationAxes();
}
var modifiedEntities = new List <Entity>();
modifiedEntities.AddRange(e.NewSelection);
// update the selected entities collections on transformation gizmo
foreach (var gizmo in transformationGizmos)
{
gizmo.AnchorEntity = EntityWithGizmo;
gizmo.ModifiedEntities = modifiedEntities;
}
}
private void UpdateModifiedEntitiesList(object sender, EntitySelectionEventArgs e)
{
selectedEntity = e.NewSelection.Count == 1 ? e.NewSelection.Single() : null;
}