2010/2/21 Bryan Bishop <kanz...@gmail.com> > On Sun, Feb 21, 2010 at 1:59 PM, Thomas Paviot <tpav...@gmail.com> wrote: > > Hi Bryan, > > Hey Thomas. Thanks for the quick reply. > > > *Very* intersting thread, thank you for opening it. > > had to be done > > > The topic you're talking about is still an open issue in CAD and > > contributions from the open source community would certainly be a great > > thing. However, it's not only a technical problem (in terms of > > implementation), but rather a scientific one. As far as I know, a good > > starting point is the second edition of the AP203 STEP application > protocol, > > especially the ISO10303-55 (‘Procedural and hybrid representation’). > Being > > able to implement this part of the standard in a scripting langage would > > already be a huge step. > > Yes, absolutely. I do not have access to the ISO documentation on > STEP. Maybe you can send a few files my way to help me out? There is > one other resource that I am aware of- namely, the STEP export API in > the OpenCASCADE source code. From this, it is possible to extract the > valid entities that can be found in a STEP file in the EXPRESS > language. But then you have the issue of adopting OCC's peculiar > standard or peculiar implementation of STEP. Here's a skeleton of STEP > features that I figured out by looking at the OCC source: > > http://designfiles.org/~bryan/step_importer.py > > > I think this approach would certainly be the easiest way to get started: > the > > STEP data model has been widely discussed and validated. > > Right now what we need most are the ISO 10303 documents. Otherwise I > suspect nothing will happen. Whether or not this could be used to make > an API is also another issue- I suspect so, but maybe we should forge > ahead even if we can't get the ISO docs? > > - Bryan > http://heybryan.org/ >
Bryan, You'll have to buy the CD in order to have documentation. However, there's a webpage dedicated to AP203ed2 here: http://www.steptools.com/support/stdev_docs/express/ap203e2/index.html The EXPRESS data model file can be browsed at: http://www.steptools.com/support/stdev_docs/express/ap203e2/html/index.html I learnt most of the STEP standard by reading the EXPRESS files. Thomas
_______________________________________________ Pythonocc-users mailing list Pythonocc-users@gna.org https://mail.gna.org/listinfo/pythonocc-users
