Curve Planarize

Default Projection Plane

• Best – Calculate the plane that best fits the existing curve (the plane that forces the least modification to the curve).

• Axis – Flatten the curve onto an axis plane (XY, YZ, or XZ).

• User Defined Plane – Flatten the curve onto an existing construction plane.

• View – Calculate the plane from the view vector (perpendicular to the active window) and the vector joining the end CVs of the row.

The following option appears when the Default Projection Plane is Best.

Lock Ends

Do not move the endpoints while flattening. Locking ends allows you to maintain existing intersections.

The following options appear when the Default Projection Plane is Axis.

Principal Plane

Choose a plane (XY, YZ, or XZ) to flatten the curve onto.

Keep Originals

Keep the old curve(s) after flattening.

Use the Curve Planarize tool to flatten a curve onto its average plane, an axis, or an existing reference plane.

Set up the Curve Planarize tool

• In the Curve Edit tool palette, select the Curve Planarize tool , then select the icon.
  • To flatten curves onto their average planes, set Default Projection Plane to Best.
  • To flatten curves onto an axis plane, set Default Projection Plane to Axis and then choose the plane.
  • To flatten curves onto an existing reference plane, set Default Projection Plane to User Defined Plane.

The User Defined Plane option requires a reference plane object.

Flatten a basic curve onto a plane

1. Shift-select the Curve Planarize tool icon.
2. Click the curves you want to flatten.
3. Click Go.
4. If you set the Default Projection Plane option to User Defined Plane, click the reference plane you want to flatten the curves onto.