Rhino patch in Grasshopper

Hi,

just took a look in the sdk looking for the Rhino command "patch".

And this is what I found:

Public Function RhinoCreateEdgeSrf(ByRef curves As array) As OnBrep

Since I haven't started to learn how to write VB-code yet, I just wonder if someone could tell me if RhinoCreateEdgeSrf does the same as "patch" - that is, creates a surface from the selected edges.

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Permalink Reply by Jacek Jaskólski on April 12, 2010 at 12:56pm

Yes.
All you need is some basic text replacement in the code - see attached definition.

Marc - Thanks for the great work! This is very, very helpful.

Attachments:

VB_patch_from_Points.ghx, 93 KB

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Permalink Reply by giac0mo on September 8, 2010 at 6:38pm

how can i remove the script line that automatically bake grasshopper surface into rhino?

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Permalink Reply by Daniele Profeta on July 3, 2012 at 5:47pm

Thanks Marc, this is exactly what I was looking for. Great job.

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Permalink Reply by Vicente Soler on July 3, 2012 at 7:02pm

Now a days there's a createpatch method in rhinocommon. No need to use the patch command in rhino (although i find it works a bit better).

A quick way to create a patch today is:
-Place a VB component into the canvas, set the x input as a list of geometrybase connect it to some geometry you want to create the patch from, connect a number to the y input indicating the number of spans (patch resolution) and paste the following code inside:

a = brep.CreatePatch(x.ToArray, y, y, doc.ModelAbsoluteTolerance)

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Permalink Reply by zj D. Wong on September 27, 2012 at 12:10am

Hi, I tried to input my curves but it just turns up as Null Values and doesn't work...

This seems to be only component that I can find that patches a surface in GH

I am using the newest Grasshopper 0.9 and Rhino 4 SR9

Is this a problem??

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Permalink Reply by arman hadilou on February 1, 2013 at 2:59pm

Thank you Marc, this works great, I was just wondering if you had a chance to test it with python. On the other note, I want to try it with 6 curves, it does not trim the patch surface and gives me an untrimmed surface, do you know how to fix that?

Thank you,

arman

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Permalink Reply by aiiiiiiiiii on August 2, 2010 at 3:35am

I tried to figure out a 07 version,but failed.can anyone help?

Thanks!

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Permalink Reply by aiiiiiiiiii on August 5, 2010 at 11:08pm

anyone help?the "bake" and "select" method drive me crazy....

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Permalink Reply by David Rutten on August 6, 2010 at 5:44am

Hi Blue,

can you be more specific? Which Bake and Select methods?

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

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Permalink Reply by aiiiiiiiiii on August 9, 2010 at 5:10am

...........................
I'm so glad that you replied my question.what I mean is just how to bake GH object to rhino and how to select the object just baked in GH to make it a GH object?

In GH 06,i can write something like this:

..........................................
Dim bakedList As New List(Of MRhinoCurveObject)
For Each Crv As OnCurve In CrvList
Dim newCrv As MRhinoCurveObject = doc.AddCurveObject(crv)
newCrv.Select()

bakedlist.Add(newCrv)
Next
.............................
Dim go As New MRhinoGetObject()
go.EnablePreSelect(True)
go.EnablePostSelect(False)
go.GetObjects(0, 0)
If go.ObjectCount <> 0 Then
Dim objref As MRhinoObjRef = go.Object(0)
Dim objBrep As onBrep = objref.Brep

A = objBrep
............................
but in the new sdk,i just find the right class and method to make it right...

Look forward your answer.

Thank you !!

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Permalink Reply by Daniel da Rocha on February 16, 2011 at 5:23am

How would you go to add other options for the -Patch command?

I wanted to add a parameter StartingSurface for the patch, but I can't manage to make it work... something with data types not being the correct ones...

app.RunScript("_-patch PointSpacing=1 Stiffness=.1 AdjustTangency=Yes AtumaticTrim=Yes StartingSurface=" & startingSrf & " uSpans=" & uSpans & " vSpans=" & vSpans & " _Enter")

I pass the starting srf as an input... as OnSurface...

Any insights??
Thanks
Daniel