Hi, I just finished the reading of the COLLADA spec ( http://www.khronos.org/files/collada_spec_1_5.pdf). For your information, COLLADA (http://www.collada.org) is a "a royalty-free XML schema that enables digital asset exchange within the interactive 3D industry". It's scope is much wider than pythonOCC can actually do, however there are two interesting points: * the basic constructs for BRep (section 9 of the pdf document) and Meshes (section 5-89) are quite simple, * the XML description of each entity is something that could inspire us for the high level API.
Thomas
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