double GetLength(IList <Solid> solids)
{
Solid maxVolumeSolid =
solids.OrderByDescending(s => s.Volume).ElementAt(0);
double maxLength = 0;
FaceArray faceArray = maxVolumeSolid.Faces;
FaceArrayIterator itr = faceArray.ForwardIterator();
while (itr.MoveNext())
{
Face curFace = itr.Current as Face;
if (curFace is CylindricalFace)
{
EdgeArrayArray edgeArrArr = ((CylindricalFace)curFace).EdgeLoops;
foreach (EdgeArray edgeArr in edgeArrArr)
{
foreach (Edge edge in edgeArr)
{
if (edge.ApproximateLength > maxLength)
{
maxLength = edge.ApproximateLength;
}
}
}
return(maxLength);
}
else
{
EdgeArrayArray edgeArrArr = curFace.EdgeLoops;
foreach (EdgeArray edgeArr in edgeArrArr)
{
foreach (Edge edge in edgeArr)
{
if (edge.ApproximateLength > maxLength)
{
maxLength = edge.ApproximateLength;
}
}
}
}
}
return(maxLength);
}
public Result Execute(ExternalCommandData commandData, ref string message, ElementSet elements)
{
UIDocument uidoc = commandData.Application.ActiveUIDocument;
Document doc = uidoc.Document;
View view = doc.ActiveView;
ViewType vt = view.ViewType;
if (vt == ViewType.FloorPlan || vt == ViewType.Elevation)
{
Reference eRef =
uidoc.Selection.PickObject(ObjectType.Element, "Please pick a curve based element like wall.");
Element element = doc.GetElement(eRef);
if (eRef != null && element != null)
{
XYZ dirVec = new XYZ();
XYZ viewNormal = view.ViewDirection;
LocationCurve locCurve = element.Location as LocationCurve;
if (locCurve == null || locCurve.Curve == null)
{
TaskDialog.Show("Prompt", "Selected element isn’t curve based!");
// return Result.Cancelled;
}
XYZ dirCur = locCurve.Curve.GetEndPoint(0).Subtract(locCurve.Curve.GetEndPoint(1)).Normalize();
double d = dirCur.DotProduct(viewNormal);
if (d > -0.000000001 && d < 0.000000001)
{
dirVec = dirCur.CrossProduct(viewNormal);
XYZ p1 = locCurve.Curve.GetEndPoint(0);
XYZ p2 = locCurve.Curve.GetEndPoint(1);
XYZ dirLine = XYZ.Zero.Add(p1);
XYZ newVec = XYZ.Zero.Add(dirVec);
newVec = newVec.Normalize().Multiply(3);
dirLine = dirLine.Subtract(p2);
p1 = p1.Add(newVec);
p2 = p2.Add(newVec);
Line newLine = Line.CreateBound(p1, p2);
ReferenceArray arrRefs = new ReferenceArray();
Options options = new Options();
options.ComputeReferences = true;
options.DetailLevel = ViewDetailLevel.Fine;
GeometryElement gelement = element.get_Geometry(options);
foreach (var geoObject in gelement)
{
Solid solid = geoObject as Solid;
if (solid == null)
{
continue;
}
FaceArrayIterator fIt = solid.Faces.ForwardIterator();
while (fIt.MoveNext())
{
PlanarFace p = fIt.Current as PlanarFace;
if (p == null)
{
continue;
}
p2 = p.FaceNormal.CrossProduct(dirLine);
if (p2.IsZeroLength())
{
arrRefs.Append(p.Reference);
}
if (2 == arrRefs.Size)
{
break;
}
}
if (2 == arrRefs.Size)
{
break;
}
}
if (arrRefs.Size != 2)
{
TaskDialog.Show("Prompt", "Couldn’t find enough reference for creating dimension");
//return Result.Cancelled;
}
Transaction trans = new Transaction(doc, "create dimension");
trans.Start();
doc.Create.NewDimension(doc.ActiveView, newLine, arrRefs);
trans.Commit();
}
else
{
TaskDialog.Show("Prompt", "Selected element isn’t curve based!");
// return Result.Cancelled;
}
}
}
else
{
TaskDialog.Show("Prompt", "Only support Plan View or Elevation View");
}
return(Result.Succeeded);
}