void UpdateActorSelection()
{
Camera camera = editMain.GetCamera();
Vector2 dragMinViewport = camera.ScreenToViewportPoint(Vector2.Min(startScreenCorner, endScreenCorner));
Vector2 dragMaxViewport = camera.ScreenToViewportPoint(Vector2.Max(startScreenCorner, endScreenCorner));
Rect dragViewportRect = new Rect(dragMinViewport, dragMaxViewport - dragMinViewport);
Vector3[] dragFarWorldCorners = new Vector3[4];
camera.CalculateFrustumCorners(dragViewportRect, MAX_DIST, Camera.MonoOrStereoscopicEye.Mono, dragFarWorldCorners);
float dragBoxWidth = Mathf.Abs(dragFarWorldCorners[1].x - dragFarWorldCorners[2].x);
float dragBoxHeigh = Mathf.Abs(dragFarWorldCorners[1].y - dragFarWorldCorners[0].y);
Ray centerRay = camera.ScreenPointToRay(Vector2.Lerp(startScreenCorner, endScreenCorner, .5f));
Vector3 dragBoxCenter = centerRay.GetPoint(MAX_DIST / 2f);
Vector3 halfExtents = new Vector3(dragBoxWidth / 2f, dragBoxHeigh / 2f, MAX_DIST / 2f);
Quaternion rotation = Quaternion.LookRotation(centerRay.direction, dragFarWorldCorners[1] - dragFarWorldCorners[0]);
Collider[] colliders = Physics.OverlapBox(dragBoxCenter, halfExtents, rotation, userMain.GetLayerMask(), QueryTriggerInteraction.Collide);
HashSet <VoosActor> actorsToAdd = new HashSet <VoosActor>();
foreach (Collider collider in colliders)
{
VoosActor maybeActor = collider.GetComponentInParent <VoosActor>();
if (maybeActor != null)
{
Vector3 viewportPosition = camera.WorldToViewportPoint(maybeActor.GetWorldRenderBoundsCenter());
if (viewportPosition.z > 0 && dragViewportRect.Contains(viewportPosition))
{
actorsToAdd.Add(maybeActor);
}
}
}
// it feels like there should be a better way of finding these add/remove lists?
HashSet <VoosActor> actorsToRemove = new HashSet <VoosActor>(selectedActors);
actorsToRemove.ExceptWith(actorsToAdd);
actorsToAdd.ExceptWith(selectedActors);
foreach (VoosActor actor in actorsToRemove)
{
//editMain.RemoveTargetActor(actor);
selectedActors.Remove(actor);
selectedFeedback[actor].RequestDestroy();
selectedFeedback.Remove(actor);
}
foreach (VoosActor actor in actorsToAdd)
{
//editMain.AddTargetActor(actor);
selectedActors.Add(actor);
SelectionFeedback feedback = Instantiate(editMain.targetFeedbackPrefab);
feedback.scaleMod = 1.1f;
feedback.SetActor(actor);
selectedFeedback[actor] = feedback;
}
}
