Before you begin: Create a 3D shape containing several points.
From the section of the
action bar, click
Spline.
Select two or more points where the spline is to be
created.
An updated spline is visualized each time a point is selected. You can edit the spline
by first selecting a point and then doing either of the following:
Click to add a line at the end of the list in the table.
Click to insert a line before the selected line in the table.
Click to insert a line after the selected line in the table.
Click
to remove all the lines.
Select Geometry on support and then select a support (a
plane or a surface), if you want the spline to be projected onto a support
surface.
It is better when the tangent directions belong to the support, that is
when a projection is possible. In this case, select a surface or plane. Spline created on a planar support grid
Optional:
Select the Close Spline check box to create a closed
curve, provided the geometric configuration allows it.
Spline with Close Spline option is cleared Spline with Close Spline option is selected
To specify tangency conditions onto any point of the spline, select the point
and click Tangent Direction in the table.
There are two ways of imposing tangency and
curvature constraints:
Explicit: select a line or plane to which the
tangent on the spline is parallel at the selected point.
From curve: select a curve to which the spline is
tangent at the selected point.
Spline with a tangency constraint on endpoint (tension = 2) Spline with reversed tangent
To set a curvature constraint at any point of the spline, once a tangency
constraint is set, indicate a curvature direction and enter a radius
value.
The curvature direction is projected onto a plane
normal to the tangent direction.
Note:
If you use the
Create linecontext menu, and want to select the same point as a
point already used to define the tangent direction, you may have to select
it from the tree, or use the preselection
navigator.
Spline with tangency constraint Spline with tangency constraint and curvature constraint (radius =
50mm) Spline with tangency constraint and curvature constraint (radius =
2mm)
Click OK to create the spline.
The spline (identified as Spline.xxx) is
added to the tree.
Important:
You cannot create a spline of which points have a distance lower
than the resolution.
.
to add a line at the end of the list in the table.
to insert a line before the selected line in the table.
to insert a line after the selected line in the table.
to remove all the lines.
