/// <summary>
/// Implement this method as an external command for Revit.
/// </summary>
/// <param name="commandData">An object that is passed to the external application
/// which contains data related to the command,
/// such as the application object and active view.</param>
/// <param name="message">A message that can be set by the external application
/// which will be displayed if a failure or cancellation is returned by
/// the external command.</param>
/// <param name="elements">A set of elements to which the external application
/// can add elements that are to be highlighted in case of failure or cancellation.</param>
/// <returns>Return the status of the external command.
/// A result of Succeeded means that the API external method functioned as expected.
/// Cancelled can be used to signify that the user canceled the external operation
/// at some point. Failure should be returned if the application is unable to proceed with
/// the operation.</returns>
public virtual Result Execute(ExternalCommandData commandData, ref string message, ElementSet elements)
{
try
{
Document document = commandData.Application.ActiveUIDocument.Document;
TrianglesData trianglesData = TrianglesData.Load();
using (Transaction tran = new Transaction(document, "CreateTrianglesTopography"))
{
tran.Start();
// Creates a new topography surface element from facets and adds it to the document.
IList <PolymeshFacet> triangleFacets = new List <PolymeshFacet>();
foreach (List <int> facet in trianglesData.Facets)
{
triangleFacets.Add(new PolymeshFacet(facet[0], facet[1], facet[2]));
}
TopographySurface topoSurface = TopographySurface.Create(document, trianglesData.Points, triangleFacets);
Parameter name = topoSurface.get_Parameter(Autodesk.Revit.DB.BuiltInParameter.ROOM_NAME);
if (name != null)
{
name.Set("CreateTrianglesTopography");
}
tran.Commit();
}
return(Result.Succeeded);
}
catch (Exception ex)
{
message = ex.Message;
return(Result.Failed);
}
}
