Curves can be edited by changing their control-point structure.

Display curve and surface control points.

Display points on the curve evaluated at knot averages.

Turn on pseudo control points for polysurfaces.

Add control points to a curve or a row of control points to a surface.

Add edit points to a curve.

Add kinks to a curve.

Add knots to curves or surfaces.

Delete specified knots from a curve or surface.

Remove multiple knots from curves and surfaces.

Remove the kink from the start/end of a curve or surface.

Insert a kink at the start/end of a curve or surface.

Change the degree of the polynomial that defines the curve or surface by adding or subtracting control points between knot spans, while maintaining the knot structure.

Change a curve to polyline or arc segments.

Change the structure of a NURBS object to a Bézier object.

Change the seam (start/end) location on closed curves.

Remove large curvature variations in a curve while limiting the geometry changes to the specified tolerance.

Make a non-rational NURBS curve of a specified degree that matches the input curve to within the specified tolerance.

Insert a kink at the start/end of a curve or surface.

Remove the kink from the start/end of a curve or surface.

Make the object knot vectors uniform without changing the control point locations.

Make the surface knots uniform in u or v direction.

Reconstruct curves, surfaces, and extrusion objects to a specified degree and control point number.

Interactively modify selected curves by non-uniformly re-spacing the control points.

Remove multiple knots from curves and surfaces.

Recalculate an object's parameter space to match its 3-D geometry.

Replace each curve segment that has the geometry of a line or an arc with a true line or arc.

Average the positions of curve and surface control points and mesh vertices and evens out the spacing to remove unwanted detail and loops.

Edit the weight of a curve or surface control point.

These commands allow interactive curve editing.

Drag points on a curve to change its shape without changing the curve's length.

Separate or duplicate polycurve segments.

Edit a curve or surface with Bézier curve editing handles.

Add control points to a curve or a row of control points to a surface.

Add edit points to a curve.

Add kinks to a curve.

Add knots to curves or surfaces.

Flatten the curve segment between picked points.

Change a curve end to meet another curve or surface edge with a specified continuity.

Change a curve's direction to match another curve's direction.

Move curve or surface control points along the u, v, and normal directions of the object.

Interactively modify selected curves by non-uniformly re-spacing the control points.

Delete specified knots from a curve or surface.

Move objects to a specified location in the x, y, and/or z directions.

Move the surrounding curve area smoothly relative to the distance.

Shorten a curve to the new picked endpoints and select.

These commands gather information about the structure of a curve.

Report the maximum and minimum distances between two curves.

Place a point object at the end of a curve.

Change the seam (start/end) location on closed curves.

Place a point object at the start of a curve.

Evaluate the curvature of a curve or surface.

Evaluate curve or surface curvature with a graph.

Display and edit an object's normal direction.

Report the domain of a curve or surface.

Display points on the curve evaluated at knot averages.

Duplicate curve control or edit points, surface control points, and mesh vertices.

Report the geometric continuity between two curves.

Report the radius of a curve.

Rhinoceros 6 © 2010-2019 Robert McNeel & Associates. 16-Jul-2019