Sketcher CreateArc

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Revision as of 14:21, 30 January 2024 by FBXL5 (talk | contribs) (Proposal for a rework of Sketcher command pages to match with other up to date pages)

Sketcher CreateArc

Menu location
Sketch → Sketcher geometries → Create arc by center
Workbenches
Sketcher
Default shortcut
G A
Introduced in version
-
See also
Sketcher Circle

Description

The Sketcher CreateArc tool draws an arc by picking three points: the center, the start point for the radius, and the end point for the angle.

When starting the tool, the mouse pointer changes to a white cross with a red arc icon:

Information about the pointer position such as coordinates, radius, and angles are shown in real time next to the pointer in blue or optionally in separate LineEdit widgets (introduced in version 0.22).

The center has been selected, dragging to set the radius‎ The center and start angle have been selected, dragging to set end angle‎

Arc with automatically applied constraints as defined by entering tool parameters in the LineEdit widgets
(leaving only the angle of the start point diregarded)

Usage

  1. There are several ways to invoke the command:
    • Press the Center and end points button.
    • Select the Sketcher → Sketcher geometries → Create arc by center option from the menu.
    • The keyboard shortcut: G then A.
  2. Define the positions of arc center, start point, and end point. See Point definition options below.
  3. The arc will be drawn and the command will finish.

Modes

If the Geometry creation "Continue Mode" preference is checked:

  • The command will restart after finishing.
  • Press Esc or right-click in an empty area of the 3D view to exit the command.

Point definition options

There are three options to define the position of the arc points:

  • Select an existing point to copy its position.
  • Click in an empty area of the 3D view to place a new point.
  • Enter tool parameters (introduced in version 0.22):
    1. The x and y coordinates to set the arc center.
    2. Values for the radius, and the angle from the sketch's x axis to set the start point.
    3. A value for the angle along the arc to set the end point.

The options can be mixed as you like.
Press Esc or right-click in an empty area of the 3D view to clear all points defined so far and start again; repeat to exit the command.

Notes

  • Tool parameters and their related LineEdit widgets are only available if the On-Views-Parameters preference is set to All or Only dimensional.
  • If tool parameters were entered the corresponding constraints are also applied to the arc accordingly (introduced in version 0.22).