Network surface error (python)

Hi,

I'm learning Python (stil beginning) and I tried to creat a network surface but I have the following error :

Runtime error (ArgumentTypeException): expected IEnumerable[Curve], got Guid

My code is simple :

srf = rh.Geometry.NurbsSurface.CreateNetworkSurface(Ucurves, 0, 0, Vcurves, 0, 0, 0.1, 0.1, 0.1, 0)

Curves are grouped in two "curve" components.

Regards,

Shimegi

Replies to This Discussion

Permalink Reply by Sébastien Mennetret on August 12, 2012 at 7:37am

No one is able to help me there ?

Permalink Reply by Anders Holden Deleuran on August 12, 2012 at 8:25am

You could use the Rhinoscriptsyntax function called "coercecurve" to get the curve object from a GUID.

Permalink Reply by Sébastien Mennetret on August 12, 2012 at 8:39am

Thank a lot, I'll give a try.

Permalink Reply by Sébastien Mennetret on August 13, 2012 at 1:09am

Hi, it doesn't work, it return the type of the curve. (ArcCurve), I'm still searching how to obtain this "IEnumerable[curve]" :)

Permalink Reply by Anders Holden Deleuran on August 13, 2012 at 2:20am

Guess I didn't read your runtime error properly, apologies. As far as I can tell the "IEnumerable[curve]" is a .NET iterator of the type Curve. I.e. a container/list of curves which supports iteration. That said, I would expect the Python function to be able to input a regular Python list. Guess it could be a bug/not updated yet!

Permalink Reply by Sébastien Mennetret on August 13, 2012 at 3:45am

In fact, I think the matter come from the curves input. I made some tries and all I obtain in input is something like : 9982e6e5-0501-41a2-90e3-47cefb52f8e1

I have six curves of different types in one GH curve component. I eaded somewhere that connecting GH curves to a script component will automatically convert them into a rhino.geometry.curve but I'm still having only the GUID and I don't understand how to extract a rhino compliant geometry.

When I create a list from inputs I obtain a list of System.Guid. I successfully (I think ! It didn't return errors) created IEnumerated with :

curvelist = list.GetEnumerator(inputcurves)

but I still have an error like :

Unable to cast object of type 'System.Guid' to type 'Rhino.Geometry.Curve'

Learning is a long way to go ...

Permalink Reply by Sébastien Mennetret on August 13, 2012 at 3:58am

Haaaaaaa !!!!!!!! I got it. Thank to your first answer, I just have to use "coercecurve" on my list.

That's it :) I'll make some make up on my code and post a example for people which could have the same interrogations :)

Thanks a lot !

Permalink Reply by Anders Holden Deleuran on August 13, 2012 at 8:06am

Cool, glad it worked out in the end. By the way, if you set "Type Hint" to "Curve" on the Python component input you don't have to coerce the curves. The component will automatically make the input of type "NurbsCurve". Good luck with the project :)

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