Geomview For Windows?
[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
[Update REQ 6846]: global OOGL Grammar
> we 've found a decription of OOGL file format in geomview manual. > Thank's to it, we 've written a > partial parser for OOGL objects. But we have'nt found any global > description for the whole file format > (i.e. what does "hdefine" mean ? - for example). > At the moment we use the grammar explain in section "embedded objects > and external objects references ") Ah, I see the problem. The OOGL file format is a *subset* of the Geomview Command Language (GCL). GCL is documented in a different part of the manual: http://www.geom.umn.edu/software/geomview/geomview_9.html#SEC62 'hdefine' is a gcl command, actually one of the more confusing ones. You use it to bind a "handle" to an OOGL object. Then the value of that handle can be changed later to another OOGL object, for fine-grained control over your scene. There's some examples of how to use handles in http://www.geom.umn.edu/software/geomview/geomview_8.html#SEC52 You can also look at the source for some of the external modules distributed with Geomview that use handles. I think trigrp uses them a lot. Let us know if you have further questions. Tamara --- Tamara Munzner munzner at cs.stanford.edu http://www-graphics.stanford.edu/~munzner
Home | Overview | FAQ | Documentation | Support | Download | Mailing List
Windows? | Development | Bug Reporting | Contributing | Contact Us | Sponsors
site hosted by