Curve Point

Command entry:Select a NURBS object.

Modify panel

Create Points rollout

Dependent Points group box

Curve Point button

Command entry:Select a NURBS object.

Modify panel

NURBS toolbox

(Create Curve Point)

This command creates a dependent point that lies on a curve or relative to it.

The point can be either on the curve or off the curve. If it is on the curve, the U Position is the only control of its location. The U Position specifies a location along the curve (based on the curve's local U axis). There are three ways to displace the point's location relative to the U position.

Procedures

To create a dependent curve point:

In the NURBS toolbox, turn on (Create Curve Point).
Click along a curve to position the point.
The curve and cursor position are highlighted during this operation.
At the Point sub-object level, adjust the point's position relative to the curve by adjusting the curve point parameters on the Curve Point rollout.
Right-click to end point creation.

Interface

While a curve point sub-object is selected, the Curve Point rollout appears.

U Position: Specifies the point's location on the curve or relative to the curve.
On Curve: When on, the point lies on the curve at the U Position.
Offset: Moves the point according to a relative (object space) X,Y,Z location.

This is relative to the U Position.
X Offset, Y Offset, and Z Offset: Specify the object space location of the offset curve point.
Normal: Moves the point along the direction of the curve's normal at the U Position.
Distance: Specifies the distance along the curve's normal. Negative values move the point opposite to the normal.
Tangent: Moves the point along the tangent at the U Position.
U Tangent: Specifies the distance from the curve along the tangent.

Offset, normal, and tangent displacement of a curve point

Trimming group box

Controls in this group box let you trim the parent curve.

Trim Curve: When on, trims the parent curve against the curve point's U position. When off (the default), the parent isn't trimmed.
Flip Trim: When on, trims in the opposite direction.
Replace Base Curve: (Only at modification time.) Lets you replace the parent curve. Click the button, then click the new curve on which to base the curve point.