Bug? Latest SR has changed Rhino.Geometry.Mesh.CreatePatch

Rhino Rhino for Windows
1

Hi guys, my tools that has worked for years are not working under the latest v7 SR.
It seems you changed something in Rhino.Geometry.Mesh.CreatePatch() causing it to think that a closed polyline is no longer the required closed polyline it requires.

2

OK, so I located the bug to be in Rhino.Geometry.Polyline. If I make it from a list of points where the first point = the last then I get an invalid curve for Patch. ( I have used this for years, it just stoped working in SR 32)

So instead of using:
OuterPolyLine = Rhino.Geometry.Polyline(OuterPts)

I now use this instead where I first make a PolylineCurve and then convert that to what patch needs:

    ######## WORKAROUND FOR SR 32 FIX
    OuterPolyLine = Rhino.Geometry.PolylineCurve(OuterPts)
    OuterPolyLine = OuterPolyLine.ToPolyline()
    ######## WORKAROUND FOR SR 32 FIX

Since I don’t know who to tag here I just tag you @dale :slight_smile: Hope that’s OK.

3

Hi Jorgen - I see our best minds are looking at this now - thanks for the report.

-Pascal

1 Like
4

It’s looking like this is the likely change in SR 32.

https://mcneel.myjetbrains.com/youtrack/issue/RH-75351/Polyline.IsClosed-should-call-ONPolylineIsClosed

So you tagged the right guy for the question!

1 Like
6

Hi @Holo,

Can you provide me a way of repeating?

Thanks,

– Dale