public Result Execute(
ExternalCommandData commandData,
ref string message,
ElementSet elements)
{
UIApplication uiapp = commandData.Application;
UIDocument uidoc = uiapp.ActiveUIDocument;
Application app = uiapp.Application;
Document doc = uidoc.Document;
Selection sel = uidoc.Selection;
ICollection <ElementId> ids = sel.GetElementIds();
int n = ids.Count;
Element e = null;
if (1 < n)
{
message = _prompt;
return(Result.Failed);
}
else if (1 == n)
{
e = doc.GetElement(ids.First());
}
else
{
try
{
Reference r = sel.PickObject(
ObjectType.Element, _prompt);
e = doc.GetElement(r.ElementId);
}
catch (OperationCanceledException)
{
return(Result.Cancelled);
}
}
TriangleCollector triangulator
= new TriangleCollector();
triangulator.DrawElement(e);
const string json_format_str = "\"{0}\" : \"{1}\"";
const string json_format_arr = "\"{0}\" : [{1}]";
List <string> lines = new List <string>(n);
lines.Add(string.Format(json_format_str,
"element_uid", e.UniqueId));
lines.Add(string.Format(json_format_arr,
"coords", triangulator.VertexCoordinates));
lines.Add(string.Format(json_format_arr,
"instance_triangles", triangulator.InstanceTriangleIndices));
if (triangulator.HasSymbol)
{
Debug.Assert(e is FamilyInstance,
"expected only family instance to have symbol geometry");
lines.Add(string.Format(json_format_str, "symbol_uid",
(e as FamilyInstance).Symbol.UniqueId));
lines.Add(string.Format(json_format_arr,
"symbol_rotation", triangulator.SymbolRotation));
lines.Add(string.Format(json_format_arr,
"symbol_translation", triangulator.SymbolTranslation));
lines.Add(string.Format(json_format_arr,
"symbol_triangle_indices", triangulator.SymbolTriangleIndices));
}
using (StreamWriter s = new StreamWriter(_filepath))
{
string a = "{\r\n"
+ string.Join(",\r\n", lines)
+ "\r\n}";
s.Write(a);
s.Close();
}
return(Result.Succeeded);
}
public Result Execute(
ExternalCommandData commandData,
ref string message,
ElementSet elements)
{
UIApplication uiapp = commandData.Application;
UIDocument uidoc = uiapp.ActiveUIDocument;
Application app = uiapp.Application;
Document doc = uidoc.Document;
Selection sel = uidoc.Selection;
ICollection <ElementId> ids = sel.GetElementIds();
int n = ids.Count;
Element e = null;
if (1 < n)
{
message = _prompt;
return(Result.Failed);
}
else if (1 == n)
{
e = doc.GetElement(ids.First());
}
else
{
try
{
Reference r = sel.PickObject(
ObjectType.Element, _prompt);
e = doc.GetElement(r.ElementId);
}
catch (OperationCanceledException)
{
return(Result.Cancelled);
}
}
TriangleCollector triangulator
= new TriangleCollector(e);
// Export instance geometry solid, mesh,
// face and triangle coordinates
List <string> lines = new List <string>();
const string json_format_str = "\"{0}\" : \"{1}\"";
lines.Add(string.Format(json_format_str,
"element_uid", e.UniqueId));
lines.Add(triangulator.InstanceMeshesJson);
lines.Add(triangulator.InstanceSolidsJson);
lines.Add(string.Format(json_format_str,
"has_symbol", triangulator.HasSymbol
? "true" : "false"));
lines.Add(string.Format(json_format_str,
"symbol_is_nested", triangulator.IsNested
? "true" : "false"));
Util.WriteJsonFile(_fn_instance_geo, lines);
if (triangulator.HasSymbol && !triangulator.IsNested)
{
Debug.Assert(e is FamilyInstance,
"expected only family instance to have symbol geometry");
// Export instance symbol relationship
lines.Clear();
lines.Add(string.Format(json_format_str,
"element_uid", e.UniqueId));
lines.Add(string.Format(json_format_str,
"symbol_uid",
(e as FamilyInstance).Symbol.UniqueId));
const string json_format_arr = "\"{0}\" : {1}";
lines.Add(string.Format(json_format_arr,
"symbol_rotation",
triangulator.SymbolRotation));
lines.Add(string.Format(json_format_arr,
"symbol_translation",
triangulator.SymbolTranslation));
Util.WriteJsonFile(_fn_instance_xform, lines);
// Export symbol geometry
lines.Clear();
lines.Add(string.Format(json_format_str,
"symbol_uid",
(e as FamilyInstance).Symbol.UniqueId));
lines.Add(triangulator.SymbolMeshesJson);
lines.Add(triangulator.SymbolSolidsJson);
Util.WriteJsonFile(_fn_symbol_geo, lines);
}
return(Result.Succeeded);
}
