Merge pull request #876 from jdegenstein/tagged_step

exporters3d.py -> add "build123d" to exported step files, change step "Name" to build123d label

src/build123d/exporters3d.py

@@ -36,6 +36,7 @@
 
 import OCP.TopAbs as ta
 from anytree import PreOrderIter
+from OCP.APIHeaderSection import APIHeaderSection_MakeHeader
 from OCP.BRepMesh import BRepMesh_IncrementalMesh
 from OCP.BRepTools import BRepTools
 from OCP.IFSelect import IFSelect_ReturnStatus
@@ -46,7 +47,7 @@
 from OCP.STEPCAFControl import STEPCAFControl_Controller, STEPCAFControl_Writer
 from OCP.STEPControl import STEPControl_Controller, STEPControl_StepModelType
 from OCP.StlAPI import StlAPI_Writer
-from OCP.TCollection import TCollection_AsciiString, TCollection_ExtendedString
+from OCP.TCollection import TCollection_AsciiString, TCollection_ExtendedString, TCollection_HAsciiString
 from OCP.TColStd import TColStd_IndexedDataMapOfStringString
 from OCP.TDataStd import TDataStd_Name
 from OCP.TDF import TDF_Label
@@ -298,16 +299,14 @@ def export_step(
     writer.SetLayerMode(True)
     writer.SetNameMode(True)
 
-    #
-    # APIHeaderSection doesn't seem to be supported by OCP - TBD
-    #
-
-    # APIHeaderSection_MakeHeader makeHeader(writer.Writer().Model())
-    # makeHeader.SetName(TCollection_HAsciiString(path))
-    # makeHeader.SetAuthorValue (1, TCollection_HAsciiString("Volker"));
-    # makeHeader.SetOrganizationValue (1, TCollection_HAsciiString("myCompanyName"));
-    # makeHeader.SetOriginatingSystem(TCollection_HAsciiString("myApplicationName"));
-    # makeHeader.SetDescriptionValue(1, TCollection_HAsciiString("myApplication Model"));
+    header = APIHeaderSection_MakeHeader(writer.Writer().Model())
+    if to_export.label:
+        header.SetName(TCollection_HAsciiString(to_export.label))
+    # consider using e.g. the non *Value versions instead
+    # header.SetAuthorValue(1, TCollection_HAsciiString("Volker"));
+    # header.SetOrganizationValue(1, TCollection_HAsciiString("myCompanyName"));
+    header.SetOriginatingSystem(TCollection_HAsciiString("build123d"))
+    # header.SetDescriptionValue(1, TCollection_HAsciiString("myApplication Model"));
 
     STEPCAFControl_Controller.Init_s()
     STEPControl_Controller.Init_s()