Split surface using curve Legacy script

Replies to This Discussion

Permalink Reply by Andrew Heumann on November 2, 2010 at 9:04pm

as of version 8 (and I think earlier?), it already is.... intersect: physical: surface split

Permalink Reply by Arthur Mamou-Mani on November 3, 2010 at 4:01am

Thanks Andrew you are right...
Sorry about that.

Just by curiousity, would you know why the script does not work on the new VB component?

cheers

Permalink Reply by Suryansh Chandra on November 3, 2010 at 5:52am

Thats because there's no RhUtil class in the RhinoCommon SDK. It used to be a part of the old SDK (legacy). The code that you would need to use with the new SDK is:

Private Sub RunScript(ByVal B As Brep, ByVal C As List(Of Curve), ByRef A As Object)
Dim bf As BrepFace = B.Faces.Item(0)
A = bf.Split(C, 0.01)
End Sub

You can't pass the entire brep in one go. You're better off making a For loop to iterate through each face of the brep, doing the split and adding the result of the split to a list.

Permalink Reply by Bastian Wibranek on November 6, 2010 at 7:57am

Hi Suryamsh,

can you maybe upload the definition, because I am having the same problem and I dont know how to fix it.

Thanks

Permalink Reply by Suryansh Chandra on November 11, 2010 at 8:34am

Private Sub RunScript(ByVal B As Brep, ByVal C As List(Of Curve), ByRef A As Object)
Dim pieces as New List(Of Brep)
For i as int32 = 0 To B.Faces.Count - 1
Dim bf As BrepFace = B.Faces.Item(i)
pieces.AddRange(bf.Split(C, 0.01))
Next
A = pieces
End Sub

Permalink Reply by Arthur Mamou-Mani on November 11, 2010 at 10:57am

Hi Suryansh,
Thanks a lot for your answer.
If there is no Rhutil class, how do you know which method to use to split surface or expressions such as B.Faces.Count ?
Still a bit confused about the new RhinoCommon...
cheers,
Arthur

Permalink Reply by David Rutten on November 11, 2010 at 1:03pm

We tried to put methods inside the classes on which these methods operate. Sometimes we break this rule though (like with all intersection functions).

If you're looking to do something that involves meshes and polylines, you should have a look inside the Mesh class and then the polyline class to see if the method is available there. If that fails, you may have to search the documentation.

--
David Rutten
david@mcneel.com
Seattle, WA

Permalink Reply by Suryansh Chandra on November 15, 2010 at 8:13am

Over time, I have become reasonably familiar with my way around the classes methods in the new SDK, but every now and then, I come across a new class, or a bunch of new functions and I do a face palm thinking "I have always been wanting this.. and I never found this". But even now, just as in my early days of getting familiar with the SDK, most of the discoveries happened by spending ages digging through the intellisense of the classes that I was dealing with.

The process of learning scripting is akin to learning any new software, just a little bit harder. Even when you start using GH/Rhino, you start with very little idea of what exists where, what commands/components are available, and even after several years of using a platform, you still keep making discoveries -- especially if the platform also keeps evolving fairly rapidly.

Unfortunately, there's no singular objective answer to 'finding the right function'. It only comes with intensive wandering about within the SDK and functions, and a lot of googling about. Needless to say, this forum also goes a long way in helping you get along.