/// <summary>
/// Gets all the solids from an element (digs into them too!). see: https://forums.autodesk.com/t5/revit-api-forum/getting-beam-column-and-wall-geometry/td-p/8138893
/// </summary>
/// <param name="elem"></param>
/// <param name="opt"></param>
/// <param name="useOriginGeom4FamilyInstance"></param>
/// <returns></returns>
public static List <Solid> GetElementSolids(Element elem, Options opt = null, bool useOriginGeom4FamilyInstance = false)
{
if (null == elem)
{
return(null);
}
if (null == opt)
{
opt = new Options();
}
List <Solid> solids = new List <Solid>();
GeometryElement gElem = null;
try
{
if (useOriginGeom4FamilyInstance && elem is Autodesk.Revit.DB.FamilyInstance)
{
// we transform the geometry to instance coordinate to reflect actual geometry
Autodesk.Revit.DB.FamilyInstance fInst = elem as Autodesk.Revit.DB.FamilyInstance;
gElem = fInst.GetOriginalGeometry(opt);
Transform trf = fInst.GetTransform();
if (!trf.IsIdentity)
{
gElem = gElem.GetTransformed(trf);
}
}
else
{
gElem = elem.get_Geometry(opt);
}
if (null == gElem)
{
return(null);
}
IEnumerator <GeometryObject> gIter = gElem.GetEnumerator();
gIter.Reset();
while (gIter.MoveNext())
{
solids.AddRange(GetSolids(gIter.Current));
}
}
catch (Exception ex)
{
// In Revit, sometime get the geometry will failed.
string error = ex.Message;
}
return(solids);
}