Suppose I have a GOM scan of a physical cube which should measure 10x10x10. The GOM scan has created a point cloud from which the RMS values of the surfaces (and the vertices, and the corners) have been extracted, and a STEP has been completed using solidworks. The STEP has sides which are slightly different in length and the corners are no longer truly orthogonal.
When I import it into HFSS I no longer have a cube but a cuboid whose faces are not parallel or perpendicular and the dimensions are for example 9.9991184463x10.0002663476x9.999322745. It looks fine in Solidworks because the drawing dimenions have been snapped by the engineer to the nearest whole unit or 1/10 etc. but the raw data from which the STEP has been created still exists and forms part of the export from Solidworks, not the snapped or rounded version. The GOM processing software (GeoMagic) can't be set to round to the design values of 10x10x10 and hence I end up with something unmanageable.
(1) In HFSS How do I round up/down to the nearest 0.1 or 0.01 etc. so that the noise in the GOM is truncated or otherwise ignored?
(2) given that the faces of the imported STEP now aren't quite perpendicular and don't quite lie on a coordinate plane, it is very difficult in HFSS to draw additional surfaces on the imported STEP surfaces if they aren't plane, and it's also difficult to draw HFSS objects because they can't easily be "snapped" to the imported STEP to have parallel edges. Suppose the GOM is actually the surface of a complicated moulded plastic enclosure with radiused edges and ventilation grills and a mix of curved and flat faces; suppose it is a metal cube as described, against which I want to contact the surface of another, but drawn in HFSS ... the contact points between the GOM and the HFSS model might only be a corner rather than a complete face. In HFSS how do I marry these objects or heal the gaps which inevitably form?
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