Sketcher BSplineComb

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Revision as of 01:25, 8 March 2021 by Uwestoehr (talk | contribs) (update)

Sketcher BSplineComb

Menu location
Sketch → Sketcher B-spline tools → Show/Hide B-spline curvature comb
Workbenches
Sketcher
Default shortcut
None
Introduced in version
0.17
See also
Sketcher Create B-spline

Description

Shows or hides the display of the Curvature Comb of a B-spline curve (see B-spline).

The curvature comb indicates the curvature (value of the second-order derivative) of the B-spline at every position. The higher the curvature at a position, the more is the the comb away from the curve. For positive curvatures ("turn to the right"), the comb is at the other side of the curve than for negative curvatures.

B-spline with a saddle point at its mid position - the curvature comb there is zero.

Usage

  1. Within a pre-exisiting sketch, find and choose a B-spline who's Curvature Comb needs to be hidden or made visible.
  2. To invoke the command the Sketcher BSplineComb do one of the following:
    • pressing the icon in the Sketcher toolbar
    • invoking from the Sketch → Sketcher B-spline tools → Show/Hide B-spline curvature comb in the Sketch dropdown menu.

Options

Limitations

Scripting