The 3D Curve Offset Definition dialog box appears.
Select the reference Curve to be offset.
It must be tangency continuous and
must not be collinear to the offset direction.
Select the offset Pulling Direction.
A direction arrow appears in the 3D geometry and lets
you change the direction.
The
pulling direction corresponds to a draft direction. It does not
correspond to the direction of the 3D curve.
If you select a plane as the pulling direction, the latter is normal
to the plane.
Specify the Offset value by entering a value
or using the spinners.
Click Preview to see the offset curve.
Click OK.
The curve (identified as 3D curve offset.xxx) is
added to the specification tree.
Here is an example with a closed curve:
3D corner parameters enable to manage singularities:
Radius:
if the curvature radius of the input curve is smaller than the
offset value, 3D corner curves are created to fill the holes
Tension: for the 3D corner curves, if needed
3D Curve Offset with a radius of 20 mm and a tension of 1
3D Curve Offset with a radius of 5 mm and a tension of 1
3D Curve Offset with a tension of 2 and a radius of 20 mm:
3D Curve Offset with a tension of 0.3 and a radius
of 20 mm :