hatch in vb .net

I am trying to add hatch objects to closed curves in vb .net. I believe I need to provide a pattern_index value but dont know where to query that from. Can I provide a name instead?

Dim hatch As New OnHatch
hatch.Create(onplane.World_xy, "solid")

How do I assign it to curves? Is the following correct?

For Each curve As OnCurve In cevs
curve.Transform(hatch)

Thanks for all the help and attention!

Replies to This Discussion

Permalink Reply by David Rutten on November 17, 2009 at 11:19am

Hi Sameer,

looks like it's more involved then I remembered:

http://en.wiki.mcneel.com/default.aspx/McNeel/SdkHatchCurve

--
David Rutten
david@mcneel.com
Poprad, Slovakia

Permalink Reply by Sameer Kumar on November 17, 2009 at 1:13pm

And the examples are in C++ and C# :(

Thanks for pointing to it... I will keep trying.

Permalink Reply by Damien Alomar on November 22, 2009 at 6:19am

There is a C# to VB.NET convert that might be useful in these cases, and in the instances I've used it, the converted code is pretty good.

http://www.developerfusion.com/tools/convert/csharp-to-vb/

Permalink Reply by Daniel da Rocha on November 7, 2011 at 3:51am

any chance this might be easier using Python?

sth like:

import rhinoscriptsyntax as rs
a = rs.AddHatch(myCrv)

....

Permalink Reply by Steve Baer on November 7, 2011 at 12:35pm

The python version that Daniel posted has to be the easiest/shortest answer, but if you want to use VB.NET I updated the wiki sample to a RhinoCommon version.

http://wiki.mcneel.com/developer/rhinocommonsamples/hatchcurve

Until the next V5 beta or V4 version of Grasshopper, you will need to use a different version of the Hatch.Create function (which takes a list of curves instead of a single curve).

Thanks,

-Steve

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