Hi All, Rhino creates extrusion objects when possible. Is grasshopper able to bake extrusion objects? I always get a polysurface from baking.

Grasshopper 1 was written before Extrusion objects existed and it was never modified to cater for them. If you extrude in GH you will get polysurfaces from the outset.

Hi David. Is this still the case for Rhino 6/Grasshopper? I would like to extrude urban plans to random heights, with keeping the model as small as possible… if not, do you have a suggestion how to do it any other way, maybe outside grasshopper? Thanks a lot in advance! Anika

It seems that it still not there. See this discussion [image] Native extrude and GSP extrude Grasshopper The difference is no split at tangents. It’s important to have splits at tangents to export clean geometry to other applications. [png] It could be easy to gener…

hi. thanks… could u combine the rhinocommon solution with some randomizing parameter for height?

I did a little example [image] The benefit in size is huge !! [image] The C# is super simple. I generate some closed polygon which are extruded randomly. One with a C#, but if you bake with Grasshopper Button it will become Brep/Polysurface (heavy 20Mo) If using Legacy extrude 15 Mo If using …

fantastic! …thank you a lot! somehow this randomizes the height to both sides though. (from my base curves in rhino… could it be some thing in the script? imho GH should really incorporate this at some point ( @DavidRutten )… it makes models a 10 times smaller…

Extrusions (along with Sub-D surfaces) will be included in Grasshopper 2.0 as native geometry types.

Hi Laurent… still having this problem with “Flipped” curves… even if i flip them manually in rhino / or using flip curve component in GH… could it be something in the script? [image]

I have noPC now. Could you post some examples curves ? And script if you changed things. There are also many other functions in rhinocommon.

haven’t change anything… but it seems to be irregular. does the script have to be different for windows? i even culled all curves that extrude into the opposite (negative) direction… and flipped them, then used the script on them again. Result: some still extrude into the wrong directio… samplecur…

Baking extrusion objects?

Grasshopper

brian (Brian Gillespie) August 15, 2023, 10:46pm 21

RH-42662 is fixed in the latest WIP

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Baking extrusion objects?

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