Smooth

Toolbar	Menu
Geometry Fix Transform	Transform Smooth

Toolbar

Toolbar: Geometry Fix | Transform

Smooth

The Smooth command averages the positions of object points or vertices. This command is useful for removing unwanted detail, and for removing loops in objects.

When mesh vertices are selected, you may have to use the WeldVertices command before smoothing in order to prevent the mesh from pulling apart.

Input
Curves, surfaces and meshes Control points, edit points and mesh vertices

Steps

Select supported object types and press Enter.

The selected objects will appear to melt, losing detail due to the averaging of the positions of the object points.

To smooth part of a curve or surface

Make a supported object type points on.
Start the Smooth command.
Click the check boxes for the coordinate directions and adjust the Smooth factor.
The selected object points will move slightly to smooth the object.

To set one check box and clear the others

Right-click the check box you want to check.

Smooth Options

Smooth X / Y / Z

Smooths only in the specified x, y, or z direction.

Shortcuts

Right-click a checkbox once to set one direction option and clear all others.
Right-click a checkbox twice to set all direction options.

Fix Boundaries

Prevents naked edges or endpoints from being moved.

Meshes: Vertices along naked edges will not be modified.

Curves: End control points will not be modified.

Surfaces: The control points along the boundaries of the surface will not be modified. The edges and trims of trimmed surfaces will be modified if they do not coincide with the surface boundary.

Note

If all of the object points are selected, Rhino perceives this as the whole object being selected.
Fix Boundaries may cause undesirable seams or singularities in closed curves and surfaces.

World / CPlane / Object coordinates

Use world or construction plane or object u, v, and n coordinates to determine the direction of the smoothing.

Smooth factor per step

Sets an amount of smoothing.

0 to 1

Object points move toward the average.

Greater than 1

Object points move past the average.

Negative

Object point move away from the average (roughing).

Number of smooth steps

Specifies the number of steps to iterate the smoothing factor through.

Note

Many steps and small factor are preferable to setting the factor above 1.
Setting the factor to 1 means the original object point locations are ignored, the new locations then are the average of the neighboring points.

Smooth

Steps

To smooth part of a curve or surface

To set one check box and clear the others

Smooth X / Y / Z

Shortcuts

Fix Boundaries

Note

World / CPlane / Object coordinates

Smooth factor per step

0 to 1

Greater than 1

Negative

Number of smooth steps

Note

See also