Some wrong Control points

openNURBS
1

Hello,

i tried to read a 3DM File (from Rhino v.5.1.30129.1756, 29.01.2013), but one Row of the Control point matrix is wrong.

I used the OpenNURBS Toolkit (example_read) from version 20110202 and 20121024, but its the same problem.

But in Rhino 5 and the Step conversion the Control points are correct.

Here is a Screenshot from our System with the Step-File (red) and the 3DM-File (green).

332190dc755c2adbe69b49ffeed67670988d73bf033.jpg1256×734 156 KB

Best regards
Marcel

2

I also have this issue using Rhino3dm. I can send files if needed.

Any help will be appreciated.

3

Hi @Mike_Johnson,

Sure, free free to post the 3dm file. Also, please provide a code snippet that demonstrates how you are reading the file and how you are determining that the control points are ‘wrong’.

Thanks,

– Dale