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Arc 3Points

Ellipse

Draft

Description

A Draft Circle can be turned into an arc by setting its DataFirst Angle and DataLast Angle properties to different values.

Usage

See also: Draft Tray, Draft Snap and Draft Constrain.

1. There are several ways to invoke the command:
   • Press the Circle button.
   • Draft: Select the Drafting → Circle option from the menu.
   • BIM: Select the 2D Drafting → Circle option from the menu.
   • Use the keyboard shortcut: C then I.
2. The Circle task panel opens. See Options for more information.
3. Pick the first point, the center of the circle, in the 3D View, or type coordinates and press the Enter Point button.
4. Pick the second point in the 3D View, or enter a Radius.

Options

The single character keyboard shortcuts available in the task panel can be changed. See Draft Preferences. The shortcuts mentioned here are the default shortcuts.

Notes

• A Draft Circle can be edited with the Draft Edit command.

Preferences

See also: Preferences Editor and Draft Preferences.

• If the Edit → Preferences → Draft → General → Create Part primitives if possible option is checked, the command will create a Part Circle instead of a Draft Circle.

Properties

See also: Property View.

A Draft Circle object is derived from a Part Part2DObject and inherits all its properties. It also has the following additional properties:

Data

Draft

• DataArea (Area): (read-only) specifies the area of the face of the circle. The value will be 0.0 if DataMake Face if false or the face cannot be created.
• DataFirst Angle (Angle): specifies the start angle of the circle, normally 0°.
• DataLast Angle (Angle): specifies the end angle of the circle, normally 0°.
• DataMake Face (Bool): specifies if the circle makes a face or not. If it is true a face is created, otherwise only the perimeter is considered part of the object. This property only works if the DataFirst Angle and DataLast Angle have the same value. Note that 0° and 360° are not considered the same.
• DataRadius (Length): specifies the radius of the circle.

View

Draft

• VyPattern (Enumeration): specifies the Draft Pattern with which to fill the face of the circle. This property only works if DataMake Face is true and if VyDisplay Mode is Flat Lines.
• VyPattern Size (Float): specifies the size of the Draft Pattern.

Scripting

To create a Draft Circle use the make_circle method (introduced in 0.19) of the Draft module. This method replaces the deprecated makeCircle method.

circle = make_circle(radius, placement=None, face=None, startangle=None, endangle=None, support=None)
circle = make_circle(Part.Edge, placement=None, face=None, startangle=None, endangle=None, support=None)

• Creates a circle object with given radius in millimeters.
  • radius can also be a Part.Edge, whose Curve attribute must be a Part.Circle.
• If placement is None the circle is created at the origin.
• If face is True, the circle will make a face, that is, it will appear filled.
• If startangle and endangle are given in degrees, and have different values, they are used and the object appears as a Draft Arc.

Example:

import FreeCAD as App
import Draft

doc = App.newDocument()

circle1 = Draft.make_circle(200)

zaxis = App.Vector(0, 0, 1)
p2 = App.Vector(1000, 1000, 0)
place2 = App.Placement(p2, App.Rotation(zaxis, 0))
circle2 = Draft.make_circle(500, placement=place2)

p3 = App.Vector(-1000, -1000, 0)
place3 = App.Placement(p3, App.Rotation(zaxis, 0))
circle3 = Draft.make_circle(750, placement=place3)

doc.recompute()

Arc 3Points

Ellipse

Draft