I try to find any modeling command which extrudes a given profile along a curve.
The profile should stay perpendicular to the curve. Keeping it flat makes no sense.
Try Sweep1 with one section. The single section stays perpendicular to the rail. āTwistā of the section is determined by the choice of āFreeformā or āRoadlikeā and the axis direction for āRoadlikeā. You can also use a surface edge as the rail and have the section be oriented to the surface. Experiment.
If Sweep1 works for you check this thread as solved. If it does not then post a .3dm file with your input geometry and a description of the what you need.
While ExtrudeCrv āmake no senseā for you currently, it is useful in other situations.
Strangely it did not work at a customer who is on Rhino8 / Mac. On my computer it works.
I clear this up with the customer. By the way Rhino on Mac sucks like hell. But it was also a
mac book. When you are used to a 50ā display, itās hard to use.
It works like @davidcockey said. Sweep1 of a degree 3 curve along a degree 5 curve and then using CurvatureGraph shows the perpendicularity.
You askedā¦
ā¦and the above shows that such a command exists.
Iāve had the same requirement in the past and as far as I recall sweep command also didnāt orient the circle for me, so the result would be a round end at the start and ellipse at the other end of the curve (I donāt recall if it was sweep1 or another command and at the moment donāt have access to rhino to check it)
With sweep1 is there any other parameter needs to be set?
@sales4 in your 2 replies you seem totally ignored anything that was said beforeā¦