Toolbar Menu

Curve from Object


Curve From Objects >

Extract Isocurve

 History enabled

The ExtractIsocurve command creates curves that duplicate surface isoparametric curves at specified locations on the surface.


  1. Select a surface.
    The cursor is constrained to the surface, and isoparametric curves display at cursor.
    The draft angle of the surface displays at the status bar.
  2. Pick to create the curve(s).
    Use the Int object snap for snapping to isoparametric curves intersections.
Command-line options

Direction (Surfaces only)

Specify the u, v, or both directions.


Extracts all isocurves in u, v, or both directions depending on the Direction option.

Toggle (Surfaces only)

Toggles the direction between u and v.


Determines whether surface trims are ignored or taken into consideration. When the marker misses the untrimmed surface, the no-access cursor is shown.

No access cursor.



Toolbar Menu

Curve from Object

Curve Tools

Not on menus.

 History enabled

The MoveExtractedIsocurve command allows moving an isocurve extracted with the ExtractIsocurve command on the surface it was extracted from.

The MoveExtractedIsocurve command supports history, so if the surface changes, the moved isocurve will update.

See also

Extract object sub-elements




Rhinoceros 6 © 2010-2017 Robert McNeel & Associates. 19-Mar-2018