Sketcher BSplineComb/it: Difference between revisions

From FreeCAD Documentation
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Mostra o nasconde la visualizzazione del pettine di curvatura di una curva B-spline (vedere: [https://en.wikipedia.org/wiki/B-spline B-spline])
Mostra o nasconde la visualizzazione del pettine di curvatura di una curva B-spline (vedere: [https://en.wikipedia.org/wiki/B-spline B-spline])


The curvature comb indicates the curvature of the 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.
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.

[[File:sketcher_BSplineCurvatureHide.png]]

versus


[[File:sketcher_BSplineCurvatureShow.png]]
[[File:sketcher_BSplineCurvatureShow.png]]
{{Caption|B-spline with a saddle point at its mid position - the curvature comb there is zero.}}


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# Selezionare una B-spline e applicare.
# Selezionare una B-spline e applicare.
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==Opzioni==

==Limitazioni==

==Script==


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Revision as of 12:41, 19 March 2021

Curvatura della B-spline

Posizione nel menu
Sketch → Sketcher B-spline tools → Mostra/Nascondi lo strumento curvatura per la B-spline
Ambiente
Sketcher
Avvio veloce
Nessuno
Introdotto nella versione
0.17

SeeAlso=Crea B-spline

Vedere anche
Nessuno

Descrizione

Mostra o nasconde la visualizzazione del pettine di curvatura di una curva B-spline (vedere: 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.

Utilizzo

  1. Selezionare una B-spline e applicare.