pythonOCC presentation at the 11th NASA-ESA Workshop on Product Data Exchange (http://step.nasa.gov/pde2009/). Abstract : The combination of open-source software and open standards are known to be considered as a key success factor of further technology development. The interest around the STEP standard is growing these last years, since the release of Application Protocols that allow to foresee new software solutions able to ensure a consistent product data description covering the whole lifecycle. This presentation focuses on the features of a free 3D modeling/data exchange library in the context of a research work dealing with the STEP AP239 standard for PDM/ERP interoperability. The goal is to merge these two approaches and describe the product from design to manufacturing, with a granularity that allow to keep the control over product configuration.

1. From design to manufacturing : a product definition based on a pythonOCC TM /STEP framework. 11th NASA-ESA Workshop on Product Data Exchange Kent Space Center, 29 April – 1 May 2009 Thomas Paviot*, Jelle Feringa*, Stephen Waterbury** *pythonOCC project: [email_address] ; [email_address] **NASA/GSFC: [email_address]

5. STEP and semantic web – SOA architecture SOA ERP (Sage, SAP R3, OpenERP etc.) SOA PDM (PTC Windchill, DS MatrixOne etc.) STEP AP239 (PLCS) data model PLMServices 2.0-based SOA public ring CAD modeling tool Knowledge data base RDF/OWL Thomas Paviot Ph.D. research (PLM09 conf. – July 2009, Bath University – G.B.) Reasoning results/ SPARQL queries knowledge populating (manufacturing info) Detailed in the next part of the presentation

10. Level 1 : a simple but fully automated binding generation system Process input OpenCascade 6.3.0 headers (14197 files) XML files pygccxml processing Py++ processing Set of *.i files Set of *.cpp and *.py files Process output : Python bindings (*.py and *.pyd/*.so libraries) Build process (g++/msvc) SWIG processing

18. Demo 5 : multiprocessing results Pump part slicing display Multiprocess performance results (MacOSX 10.5/8 processors machines/ pythonOCC svn rev. 302/ STEP geometry)

20. Demo 6 : 1 shape server, 3 concurrent clients

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