cap extruded surface constructed from plane curve

[Moha]

Hi all,

I would like to construct a solid starting from a plane curve or plane surface.
Is there a way to do this directly (that is : avoid constructing an extrusion from
the plane curve then trim a plane surface with the contour curve and join that
on both ends to the extruded surface to cap it).

I couldn't find in RhinoCommon a function to build a solid directly from a plane
surface or plane curve. Any help would be highly appreciated.

Thank you

[Steve Baer]

We don't have a simple one-line function for this in RhinoCommon yet, but I did add a wishlist item for it at
https://github.com/mcneel/rhinocommon/issues/114

If you are working with curves on the xy plane, the following may work for you

Python Code:

import rhinoscriptsyntax as rs
import scriptcontext
import Rhino
 
def MakeExtrusion():
    id = rs.GetObject("Select planar curve", rs.filter.curve)
    if not rs.IsCurve(id) or not rs.IsCurvePlanar(id): return
    curve = rs.coercecurve(id)
    if not curve: return
 
    extrusion = Rhino.Geometry.Extrusion()
    extrusion.SetOuterProfile(curve, True)
    a = Rhino.Geometry.Point3d.Origin
    b = a + Rhino.Geometry.Vector3d.ZAxis
    extrusion.SetPathAndUp(a,b,Rhino.Geometry.Vector3d.YAxis)
    scriptcontext.doc.Objects.AddExtrusion(extrusion)
    scriptcontext.doc.Views.Redraw()
 
 
if __name__=="__main__":
    MakeExtrusion()

Thanks,
-Steve

[Moha]

Thank you Steve for replying to my request. Your solution does what I was looking for.

[Mitch]

What about Brep.CapPlanarHoles...?

--Mitch