void SelectFromPoint(Vector2 mousePosition, bool isSelectionModification, bool removeSelection)
{
var ray = _camera.CreateCameraRay(mousePosition);
var currentState = _selectionManager.GetState();
if (currentState.Mode == GeometrySelectionMode.Face)
{
if (currentState.Mode == GeometrySelectionMode.Face)
{
var faceState = currentState as FaceSelectionState;
if (GeometryIntersection.IntersectFace(ray, faceState.RenderObject.Geometry, faceState.RenderObject.ModelMatrix, out var selectedFace) != null)
{
FaceSelectionCommand faceSelectionCommand = new FaceSelectionCommand(selectedFace.Value, isSelectionModification, removeSelection);
_commandManager.ExecuteCommand(faceSelectionCommand);
return;
}
}
}
// Pick object
var selectedObject = _sceneManger.SelectObject(ray);
if (selectedObject == null && isSelectionModification == false)
{
// Only clear selection if we are not in geometry mode and the selection count is not empty
if (currentState.Mode != GeometrySelectionMode.Object || currentState.SelectionCount() != 0)
{
var selectionCommand = new ObjectSelectionCommand(new List <ISelectable>(), false, false);
_commandManager.ExecuteCommand(selectionCommand);
}
}
else if (selectedObject != null)
{
var selectionCommand = new ObjectSelectionCommand(selectedObject, isSelectionModification, removeSelection);
_commandManager.ExecuteCommand(selectionCommand);
}
}
