public void Update()
{
Document doc = _drawing.Document as Document;
if (doc.Selections.Count == 0)
{
_gripPnts.Clear();
return;
}
Dictionary <ObjectId, List <GripPoint> > oldGripPnts = _gripPnts;
_gripPnts = new Dictionary <ObjectId, List <GripPoint> >();
foreach (Selection sel in doc.Selections)
{
if (sel.objectId == ObjectId.Null)
{
continue;
}
if (oldGripPnts.ContainsKey(sel.objectId))
{
_gripPnts[sel.objectId] = oldGripPnts[sel.objectId];
continue;
}
DBObject dbobj = doc.Database.GetObject(sel.objectId);
if (dbobj == null)
{
continue;
}
Entity entity = dbobj as Entity;
if (entity == null)
{
continue;
}
List <GripPoint> entGripPnts = entity.GetGripPoints();
if (entGripPnts != null && entGripPnts.Count > 0)
{
_gripPnts[sel.objectId] = entGripPnts;
}
}
_drawing.ResetGrips();
}
