Wed, 10/26/2011 - 18:10
Hi,
I have the following problem when exporting an XDE document to STEP-AP via STEPCAFControl_Writer in OCC 6.3:
When there are nested assemblies, (e.g. assembly1 is father of assembly2), the child-assemblies are exported only if they have a sibling (which is in my tests a simple shape).
So, when the structure in the XDE document is this:
assembly1
|
+-- assembly2
|
+-- shape1
+-- shape2
the assembly2 and the shapes are not exported to STEP.
But when the structure is this:
assembly1
|
+-- assembly2
| |
| +-- shape1
| +-- shape2
|
+-- shape3
then everything is fine.
Is this a common problem or just mine? Does someone have a suggestion?
Thanks for taking a look!
Wed, 10/26/2011 - 18:13
Oops - bad formatting.
I try again. The non-working structure is this:
assembly1
|
+-- assembly2
----- shape1
----- shape2
The working structure is this
assembly1
|
+-- assembly2
|----- shape1
|----- shape2
|
+-- shape3
Tue, 11/01/2011 - 14:33
Hi,
to make it easier to take a look, here is a code snippet which produces an XDE document-structure that can't be exported:
gp_Trsf t0;
TopLoc_Location location0(t0);
Handle_XCAFDoc_ShapeTool shapeTool = XCAFDoc_DocumentTool::ShapeTool(xdeDoc->Main());
// Create 3 assemblies and connect them hierarchically
TDF_Label assemblyLabel1 = shapeTool->NewShape();
TDataStd_Name::Set(assemblyLabel1, "assembly1");
TDF_Label assemblyLabel2 = shapeTool->NewShape();
TDataStd_Name::Set(assemblyLabel2, "assembly2");
TDF_Label assemblyLabel3 = shapeTool->NewShape();
TDataStd_Name::Set(assemblyLabel3, "assembly3");
TDF_Label componentAssembly2 = shapeTool->AddComponent(assemblyLabel1, assemblyLabel2, location0);
TDataStd_Name::Set(componentAssembly2, "componentAssembly2");
TDF_Label componentAssembly3 = shapeTool->AddComponent(assemblyLabel2, assemblyLabel3, location0);
TDataStd_Name::Set(componentAssembly3, "componentAssembly3");
When dumping the XDE document, everything looks fine. When exporting to STEP, no exception is thrown but the result is a broken structure.
Does someone see a mistake? Any suggestions?
Thank you.
Tue, 11/01/2011 - 15:11
Hi mz,
maybe this thread will help:
http://www.opencascade.org/org/forum/thread_18813/
I guess the sample code produces correct structures.
Pawel
Tue, 12/14/2021 - 13:03
can you upload again URL?
that URL is not working now