Draft Arc

Description
The Draft Arc command creates a circular arc in the current working plane by entering four points, the center, a point that defines the radius, the first end point and the second end point, or by picking tangents, or any combination of those. It uses the Draft Linestyle set on the Draft Tray.



Usage

 * 1) There are several ways to invoke the command:
 * 2) * Press the button.
 * 3) * Select the option from the menu.
 * 4) * Use the keyboard shortcut: then.
 * 5) Click the first point in the 3D view, or type coordinates and press the  button.
 * 6) Click the second point in the 3D view, or enter a.
 * 7) Click the third point in the 3D view, or enter a.
 * 8) Click the fourth point in the 3D view, or enter an.

Options

 * The primary use of the arc command is by picking four points: the center, a point on the circumference, the start of the arc, and its end.
 * By pressing, you can select a tangent instead of picking point, to define the base circle of the arc. You can therefore construct several types of circles by selecting one, two or three tangents.
 * The direction of the arc depends on the movement you are doing with your mouse. If you start to move clockwise after the third point is entered, your arc will go clockwise. To go counter-clockwise, simply move your mouse back over the third point, until the arc starts drawing in the other direction.
 * To enter coordinates manually, simply enter the numbers, then press between each X, Y and Z component. You can press the  button when you have the desired values to insert the point.
 * Press or click the checkbox to toggle continue mode. If continue mode is on, the Arc command will restart after you finish the arc, allowing you to draw another one without pressing the command button again.
 * Hold while drawing to force snapping your point to the nearest snap location, independently of the distance.
 * Hold while drawing to constrain your point horizontally or vertically in relation to the center.
 * Press or the  button to abort the current command.

Properties
A Draft Arc is in fact a Draft Circle with a that is not the same as its. A Draft Arc therefore has the same properties as a Draft Circle.

Scripting
See also: Autogenerated API documentation and FreeCAD Scripting Basics.

To create a Draft Arc use the method of the Draft module:

Example: