Sketcher: Ellisse da centro

Ellisse
Posizione nel menu
Sketch → Geometrie → Create ellipse by center
Ambiente
Sketcher, Part Design
Avvio veloce
Nessuno
Introdotto nella versione
-
Vedere anche
Ellipse by 3 Points, Cerchio, Arco di ellisse

Descrizione

Questo strumento disegna un ellisse selezionando tre punti: il centro, la fine del raggio maggiore, il raggio minore. Quando si avvia lo strumento, il puntatore del mouse si trasforma in una croce bianca con un'icona a forma di ellisse rossa. Le coordinate sono indicate in tempo reale.

The sequence of clicks is indicated by yellow arrows with numbers. C is the center, a - major diameter, b - minor diameter, F1, F2 are foci.

Usage

• Invoke the command by clicking a toolbar button, picking the menu item, or by using keyboard shortcut (needs to be assigned first in Interface Customization).
• First click in 3D view sets ellipse center. Second click sets the first radius and orientation of the ellipse. Third click sets the other radius (the distance from the line defined by first two clicks is the second radius).
• After the third click, the ellipse is created, together with a set of construction geometry aligned to it (major diameter, minor diameter, two foci). The construction geometry can be manually deleted if not needed, and recreated later. See Internal Alignment Constraint and Sketcher Show Hide Internal Geometry.
• Pressing ESC or clicking the right mouse button cancels the function.

Version

Introduced in FreeCAD v0.15.4309