Hello Rhino Experts,
I started to use Rhino 8 on Mac. (Rh7 on PC before). I am having problem to make simple Surface blend (see picture). It doesn’t deliver smooth transitions even within ‘Curvature’ or G3 level. I have to add several interior shapes to resolve that issue.
At rhino 7 It always worked automatically without any extra steps.
Is this a new ‘feature’ at Rhino 8, my mistake, or just a Bug?
Please help!
Hello- it’s pretty hard to know what exactly you are reporting here. Please post a file with the inputs to the blend and the results you do not like.
-Pascal
Hello Pascal,
Thanks for your reply. Attached is the RH8 file.
The Input is visible on the picture above. I am trying to get G2 Curvature (or G3) blend between two surfaces. The connection is not smooth as expected.
Thanks for your help.
SurfaceBlend_R8.3dm (307.1 KB)
Hello- make sure you use ‘Interior shapes’ in the blend.
That said, redoing it from a joined object and BlendEdge is also OK.
-Pascal
Thank You @pascal .
I arrived to similar problem with Sweep 2 Rail function, that worked perfectly on my PC with RH7. I built ‘hundreds’ similar surfaces with previous Rhino without any issues.
Please see attached pictures and attached file.
Rhino8 on MAC is unable to recognize Curvature or Tangent connection on Surface B. Also, the finished surface is not smooth and showing visible edge, not smooth connection.
Can you please advise?
Many Thanks
SurfaceSweep2Rail_R8.3dm (127.1 KB)
Hi Ondrej - in this case the shape curves have only 3 control points - there is no way for the sweep to hold curvature continuity on one rail and also meet the other rail. If you Rebuild to four or more points, curvature will become available - this is not different from V7.
-Pascal
Thank You for your reply @pascal .
As I mentioned, I built extreme amount of surfaces in top quality for mass market products with Rh7 and Rh8 with identical logic.
There was no problem at all. Maybe RH8 is less 'forgiving" ? Even I try now “Tangency” on that Surface B, it doesn’t change anything, It behaves like a simple curve, not surface.
Can you please open it for me with Rh7 and test? To see the difference?
Thank you a lot.
Hi Ondrej - here is what I get with and without asking for tangency
Is that what you exepct?
With Rebuild and Curvature requested
-Pascal
Hi Pascal,
In my case, things do not change.
It always looks like on your 2nd picture, regardless of my input. Position, Tangency, curvature, all same. It almost feels like a Bug? Did you create your testing on Mac version?
Thanks
Hi Ondrej - I get the same results on Mac.
Can you please run SyatemInfo in Rhino and copy/paste the results here?
-Pascal
@pascal Thanks,
See below:
Rhino 8 SR8 2024-6-18 (Rhino 8, 8.8.24170.13002, Git hash:master @ c3cc7c123163b65d85b517aff795627d5b12166b)
License type: Commercial, build 2024-06-18
License details: Cloud Zoo
Apple macOS Version 14.5 (Build 23F79) (Physical RAM: 36GB)
Mac Model Identifier: Mac15,11
Language: en
.NET 7.0.0
Metal GPU Family Apple 7
Metal GPU Family Common 3
Metal GPU Family Mac 2
Graphics processors
Apple M3 Max
Color LCD (1496 x 967 @ 120.00Hz)
USB devices
None
Bluetooth devices
None
Third party kernel extensions
None
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@pascal, I also tried to build another object with the same apoprach. This time the profile curve was built with ADJUST BLEND CURVE with CURVATURE continuity. The surface was built with SWEEP 2 RAIL with CURVATURE surface continuity. The result is not smooth again, even with adjusting REBUILT CROSS SECTION. Also surface is nor reacting as soon as I am changing Continuity values. It looks like a bug to me. Can you please review attached file and pictures?
EDIT: I restarted rhino, and now SWEEP 2 RAIL works properelly. So this must be a Bug for sure. However, I had this issue several times during this month.
Please let me know what to do. Should I reinstall rhino?
Ondrej
SurfaceSweep2_B.3dm (1.0 MB)
