Curves (3-D)

Sketch > Draw > Freehand...

The Curves menu contains functions enabling you to insert splines, NURBS, polylines created via vector equations or spirals into the active sketch or 3-D sketch.

Click below the Freehand icon to open the Curves menu:

	Cubic spline	Derives cubic splines.
	Cubic spline, tangential	Derives tangential cubic splines.
	Akima spline	DErives Akima splines.
	B-spline, NURBS	Derives B-splines and NURBS.
	Spirals*	Derives spirals.
	Curve from FFS	Applies parametric or boundary lines of a freeform surface as a curve.
	CONS from polyline	Derives surface curves.
	C-edge->NURBS	Converts elements of a 3-D sketch to a NURBS curve.
	Vector equation	Definition of 3-D polylines via vector equations. The support points are connected by lines.
	Circular vector equation	Definition of 3-D polylines via vector equations. The support points are connected by circular arcs.
	Smooth c-edge	Smoothes elements of a 3-D sketch.

* only for 3-D Sketch

If you use theHCM (Parametrics) functions, you can modify curve elements with the dragger. Select Sketch > HCM > Fix... > Spline property to specify the behaviour of the curve during dragging. The following options are possible:

Rigid

The curve can only be moved with the dragger.

Flexible

The curve can be changed dynamically with the cursor.

Scalable

The curve can be moved, rotated and scaled with the dragger.