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 to] on July 1, 2009 at 10:09am

hi lars

sorry it is not the same, it is similar to the command _EdgeSrf
it creates a untrimmed surface from 2,3,4 edges

best to]

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Permalink Reply by Luis Fraguada on July 1, 2009 at 10:35am

yes, as to] said...

In rhinoscript as well we have to run a rhino.command("_patch") because it is not an SDK function, but a function based on several SDK commands. This would be a good candidate for a vb component calling the rhino command.

luis

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Permalink Reply by Lars Renklint on July 1, 2009 at 1:21pm

That was unfortunate, it is so good at creating "soap-film surfaces".

A vb component calling a rhino command... that would require that you first bake the geometry and then use the rhino command from the vb component..?

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Permalink Reply by Luis Fraguada on July 1, 2009 at 1:35pm

Yes, this would be the case, though, you can also automate the baking and rhino command processes from the vb component...

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Permalink Reply by Vittorio Menna on July 23, 2009 at 7:22am

hi lars,
i need the same... did u find a way to do it?

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Permalink Reply by Lars Renklint on July 24, 2009 at 1:08pm

For my definition I don't need to automatically bake geometry. I manually bake my curves, use the Rhino Patch command and then reference that back into GH. Would have been nice to be able to use Patch though..

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Permalink Reply by Vittorio Menna on July 24, 2009 at 5:39pm

yes... but like u say it would have been nice to do everything in grasshopper...

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Permalink Reply by Philipp on August 2, 2010 at 3:59am

I tried to do this with rail revolve command - it was not bad

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Permalink Reply by Marc Hoppermann on August 6, 2009 at 9:50am

Hey Lars...
I've run into the same problem today and wrote a vb component that creates a patch with help of the app.RunScript
the vb component then returns the created patch that you can go on with in GH...

VB_patch.ghx
-bakes input Curves and runs the Patch command
-finds the last created object and returns it from the component.
- It also gives the object a name that I can find back later
- in the next run it will first delete the objects with that name that are already there to prevent pushing new patches into rhino every time...

VB_patch_2.ghx
is a bit simplified without deleting the ones already created

Attachments:

VB_patch.ghx, 46 KB
VB_patch2.ghx, 39 KB

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Permalink Reply by Lars Renklint on August 6, 2009 at 3:10pm

Wow, I'll rebuild my def and give it a try. Thanks for sharing!

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Permalink Reply by Dimitry A. Demin on August 20, 2009 at 2:33am

Hi Marc,
coll work!
In rhino it is possible to add also points and surface edges.
How it is possible to put geometry into inputList(CrvList now) and then fork this into components, like points, curves, etc.
Best!
Dimitry