Hi, hi want to move a line vertikal on one side. All the controllpoints should bei linked to the curve and move with the line. [image] When I move the curve the controllpoints of the (not connected) curve are not moving. [image] Is there a way to tell the controllpoint to “stay on the curve”? …

You’ll probably need to move those manually. Pity that creating those lines with RecordHistory doesn’t keep their endpoints constrained to that line.

if you must do it like that for some design process reason then there is something. if you have a bunch of those roof like sctructures that you want to experiment with in Rhino then follow this: make (in this case) 3 surfaces (edgeSrf orwhatnot but any also more complex trimmed surfaces will to) th…

No idea if a “DIY constraint” is practical for such cases, but if you MatchCrv the lines G0 to points on another line with the Pick Point option (Record History on before matching), they will follow as the reference line is transformed. [Skärmbild 2026-03-03 14.02.23]

that would be interesting, but pick point is unfortunately not accurate. you can zoom in like crazy to maybe be within tolerance but you will never exactly and reliably hit the intersection.

maybe its a (forever) bug and was actually meant to work with snaps, it at least looks like it should work though, all it needs would be focus or the usual tracking on the pointer, cant be that hard to add. idk maybe @stevebaer has an idea?

Link point to curve

Rhino Rhino for Windows

Lagom March 3, 2026, 2:23pm 6

Too bad no Osnap works when Pick Point is selected. That would be ever so useful for various use cases.

Match PickPoint is Not Precise, Needs Revisions

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Link point to curve

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