void rootEntities_CollectionChanged(object sender, TrackingCollectionChangedEventArgs e)
{
switch (e.Action)
{
case NotifyCollectionChangedAction.Add:
EntitySystem.Add((Entity)e.Item);
break;
case NotifyCollectionChangedAction.Remove:
EntitySystem.Remove((Entity)e.Item);
break;
default:
throw new NotSupportedException();
}
}
private void RefreshGizmos(GizmoAction currentGizmoAction)
{
var renderingSetup = RenderingSetup.Singleton;
// Delay gizmo change until current action is finished
if (currentActiveGizmoActionMode != ActiveGizmoActionMode &&
currentGizmoAction == GizmoAction.None)
{
if (currentActiveGizmoEntity != null)
{
editorEntitySystem.Entities.Remove(currentActiveGizmoEntity);
}
if (ActiveGizmoActionMode == GizmoAction.Translation)
{
currentActiveGizmoEntity = translationGizmo;
}
else if (ActiveGizmoActionMode == GizmoAction.Rotation)
{
currentActiveGizmoEntity = rotationGizmo;
}
else
{
currentActiveGizmoEntity = null;
}
currentActiveGizmoActionMode = ActiveGizmoActionMode;
}
if (currentActiveGizmoEntity == null)
{
return;
}
TransformationComponent[] selectedTransformations;
if (selectedEntities != null && (selectedTransformations = selectedEntities.Select(x => x.Entity.Transformation).Where(x => x != null && x.Value is TransformationTRS).ToArray()).Length > 0)
{
if (!editorEntitySystem.Entities.Contains(currentActiveGizmoEntity))
{
editorEntitySystem.Add(currentActiveGizmoEntity);
}
// TODO: Only act on "current" gizmo?
var gizmoTransformation = (TransformationTRS)currentActiveGizmoEntity.Transformation.Value;
var translationSum = Vector3.Zero;
// Make average of selected objects origin to position gizmo
foreach (var selectedTransformation in selectedTransformations)
{
// Compensate scaling
// TODO: Negative/zero scaling?
var parentMatrix = selectedTransformation.WorldMatrix;
translationSum += parentMatrix.TranslationVector;
}
gizmoTransformation.Translation = translationSum / selectedTransformations.Length;
// Make gizmo size constant (screen-space) -- only if not currently being used
// TODO: Currently FOV-dependent
if (currentGizmoAction == GizmoAction.None)
{
var view = renderingSetup.MainPlugin.ViewParameters.Get(TransformationKeys.View);
var worldView = view;
var position = Vector3.TransformCoordinate(gizmoTransformation.Translation, worldView);
gizmoTransformation.Scaling = new Vector3(position.Z * 0.01f);
}
}
else
{
if (editorEntitySystem.Entities.Contains(currentActiveGizmoEntity))
{
editorEntitySystem.Entities.Remove(currentActiveGizmoEntity);
}
}
}