UseExtrusion (Polysurface) issue

[gabrielefx]

Hi,
the command useExtrusion doesn’t work extruding some primitives, neither surfaces created from planar curves. I always use polysurfaces with isocurves visible to easily pick them in wireframe mode.
Forcing the isocurve checkbox to “on” (show surface isocurve) has no effect on objects created with isocurves off.
In Rhino 7 useExtrusion works as it should.

[Helvetosaur]

Not sure if this is what you are seeing, but there is a new setting in the WIP to not show isocurves on planar surfaces…

[gabrielefx]

ok, but what’s the command?

[Helvetosaur]

@gabrielefx

ok, but what’s the command?

You can set it in Options>Advanced with
Rhino.Options.Display.ShowIsocurvesForFlatBrepFaces

Isocurves Gone

For some reason flat surfaces in WIP 8 won’t show isocurves here. Either deg 1 or higher, when perfectly flat no isocurves are visible. Changing their density makes no difference. Only borders can be seen. In all viewports and regardless of type of display used. Even when I open older file ( v7 ) flat surfaces are now without isocurves.

[gabrielefx]

Wow!
Thank you very much!