This chapter describes:
Displays the name of the mesh on which the curve is created.
The parameters become active once the mesh has been selected.
It is the tolerance used to smoothed the scan formed by the points picked and the intermediate points, i.e. the maximum allowed distance between the resulting curve and the points of the scan.
Maximum order of the curves created, i.e. the number of control points of those curves.
Maximum number of spans between two cutting points.
|The Curve on Mesh command tries to create curves with the
with the least possible number of segments of the least possible order. I.e.:
You can check the segmentation and the order of the curves with the icon.
By default, you are in running point mode,
i.e. the curve is updated in real time and the projection of the cursor on
the mesh indicates the next pick.
Select the Hide curve preview check box to exit the running
point mode. The last picked end point is colored in red, and there is no
indication of the next pick.
analyzes the curvature of the resulting curves.
displays the maximum deviation.
displays the order and the
number of segments.
Creating Split Points and Internal Points
Types of Points
Split points are the points
you pick to create the curve.
Intermediate points are construction points, computed automatically between two split points. They lie on the mesh. They form a scan with the split points. This scan is smoothed to create the curve. They are not visible.
Internal points are not
split points and have the same behavior as intermediate points, i.e. they
are intermediate points that are not computed by the command but picked by
Types of Constraints
The symbol under the cursor indicates the current type of constraint.
Use the contextual menu to select a type of constraint
Press Ctrl+Shift to visualize all the constraints
of the current curve.
Closing the Curve
Move the cursor close to the start point.
Creating a Dominant Curve Section
A dominant curve section is a section of the curve between two split points which enforces a tangent continuity at those points.
Pick a point and drag the cursor. The symbol turns to
that indicates you are in dominant creation mode.
Online edition lets you edit the curve while you are creating it (move a point, remove a point, modify continuity constraints...). Hold down Ctrl to work in online edition mode:
Management of Holes
When there are holes in the support mesh, the curve is interpolated on
the hole area as shown below: