Adds a locator that shows the curvature or radius comb of a curve.
Curvature – The quill lengths indicate the curvature at that point on the curve (default).
Radius – The quill lengths indicate the radius at that point on the curve.
Unit Normal – The quill length is constant, so the quills only indicate the direction of the normal at that point on the curve.
Display the curvature quills, for surface curves, in the direction of the surface normals.
This option has no effect on free curves.
If this option is checked, the scale of the curvature comb is automatically calculated to be proportional to the size of the object.
When this option is unchecked, a Scale Value slider appears, allowing you to set the scale of the comb at the time of creation.
The scale applied to the comb quills.
The initial sampling
density per curve. Change this value after creating the comb by
dragging the 
.
Comb – Show the comb quills only.
Outline – Show the comb outline (the line connecting the endpoints of the comb quills) only.
Comb + Outline – Shows both the comb quills and the comb outline.
The comb and outline are drawn in different colors.
Show torsion quills on the curve
Show the inflection points on the curve with small blue arrows.
To speed up display, the arrows are only close approximations. To see the true inflection point, look for the point where the comb outline crosses the curve.
Display regions of the curvature locator using different colors based on the radius value and the Min. Radius Limit and Max. Radius Limit values.
Indicates the points of maximum and minimum radius of curvature.
Regions of the curvature locator between the Min. Radius Limit and the Max. Radius Limit are drawn in with green quills. Regions of the curvature locator less than the Min. Radius Limit or greater than the Max. Radius Limit are drawn in with rose quills.
These options are only available when Show Radius Limit is on.
Limits the length of quills by the Cutoff Value.
Limit quills to this length.
This option is necessary because some plot values, such as the radius of a straight line, are infinite, or very large.
These options are also found in the Information Window when a Curve Curvature locator is selected. The Information Window has the following additional controls:
