Getting the Base and Survey point locations with respect to the Internal Origin

[Anonymous]

Looking at the code here, https://forums.autodesk.com/t5/revit-api-forum/get-survey-point-trough-api/td-p/7543173, I can get the location of the Base point with respect to the Survey point. But how do we get the locations of the Base and Survey points with respect to the Internal Origin?

[FAIR59 · Accepted solution]

The location poimt of the Survey - and Project Base Point, is the Min -value (or Max) of the boundingbox.

			StringBuilder sb = new StringBuilder();
			
			IEnumerable<BasePoint> points = new FilteredElementCollector(doc)
				.OfClass(typeof(BasePoint))
				.Cast<BasePoint>();
			foreach(BasePoint bp in points)
			{
				string name = bp.IsShared? "surveypoint": "project basepoint";
				BoundingBoxXYZ bb = bp.get_BoundingBox(null);
				XYZ pos = bb.Min;
				sb.AppendLine(string.Format("{0} :  {1}",name, pos));
			}
			TaskDialog.Show("debug",sb.ToString());