Knot osnap and edit point

Rhino Rhino for Windows
1

Hi Everyone,

I am trying to understand what is the knot osnap is for. I though that is was the edit point (not the control point). however knot osnap doesn’t always snap to the edit point and snap on the curve on a random place on the curve.
So are knot and edit point not the same? and if not how to display them?

Thanks in advance

Paul

2

Hi Paul - knots and edit points are not the same - currently the only way to see knot locations on a curve is with the InsertKnot and RemoveKnot commands. Some curves (single span) will only have knots at the ends.

-Pascal

3

this help?
https://docs.mcneel.com/rhino/6/help/en-us/popup_moreinformation/editpoint.htm

4

And this Help:
https://docs.mcneel.com/rhino/6/help/en-us/index.htm#popup_moreinformation/knot.htm?Highlight=knot

5

Oh ok, so what is the knot osnap usually used for if you can’t visualise them?(just out of curiosity)

6

Hi Paul - it is certainly less commonly used, but if you, for example, split a curve exactly on a knot, then the resulting curves will be simpler and cleaner than if you miss by just a little.

e.g. cyan = knot locations

image
image1087×427 14.3 KB

-Pascal

7

Ok i see, thanks for the explanation Pascal