public Result Execute(
ExternalCommandData commandData,
ref string message,
ElementSet elements)
{
var app = commandData.Application;
var uidoc = app.ActiveUIDocument;
var doc = uidoc.Document;
// Ask the user to select a Face
Face face;
try
{
var pickedObject = uidoc.Selection.PickObject(ObjectType.Face, "Select a face");
var element = doc.GetElement(pickedObject);
face = element.GetGeometryObjectFromReference(pickedObject) as Face;
}
catch (OperationCanceledException)
{
return(Result.Cancelled);
}
using (var tx = new Transaction(doc))
{
tx.Start("Sort and Mark Face Curve Loops");
// Sort the loops on the selected face
var lists = SortCurveLoops(face);
// Create a label on each loop.
// Outer loops are counterclockwise.
// The label is at U=0.33, closer to the beginning of the
// edge, which gives an idea of the loop orientation.
for (var i = 0; i < lists.Count; i++)
{
for (var j = 0; j < lists[i].Count; j++)
{
var loop = lists[i][j];
Creator.CreateTextNote($"[{i}][{j}]", loop.First().Evaluate(0.33, true), doc);
}
}
tx.Commit();
}
return(Result.Succeeded);
}
