I have an issue where importing STEP files into Rhino always skips all curves/lines, although other geometry imports just fine. When importing the files into other CAD software the curves are present.
The STEP files are always exported by the same software. Could also be that it’s export is a little wonky…
Hello - I see… the object is imported as a block - that it it was an assembly, I do not know if that comes into play in how the curves are presented. I’ll put this on the pile for the developer to look at.
Thanks for the example.
There are some entities I haven’t seen before associated with the curves. It should not be very difficult to process them. Thanks for the report. [Edit] See my recent comment about an error in the STEP file. That’s the real problem, and I’ve just submitted the code to fix it for V7.
There is a repeated error in the STEP file. The missing curves are TRIMMED_CURVE entities. Such entities have a field to say whether the curve should be trimmed by a parameter or by 3D point. Both of the curves say they are trimmed by parameter values, but the trimming entity is not a parameter, it is a 3D point. When I search for the trimming parameter, none is found. I should be able to fix this easily enough by looking for a 3D point when no parameter is found.
