Part Ellipse
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Part Ellipse |
Menu location |
---|
Part → Create primitives → Ellipse |
Workbenches |
Part, OpenSCAD |
Default shortcut |
None |
Introduced in version |
- |
See also |
Part Primitives |
Description
A Part Ellipse is a parametric shape that can be created with the Part Primitives command. In the coordinate system defined by its DataPlacement property, the ellipse lies on the XY plane with its center at the origin. Its mayor axis is parallel to the X axis.
A Part Ellipse is in fact a closed counterclockwise elliptical arc, it can be turned into an arc by changing its DataAngle1 and/or DataAngle2 properties.
Usage
See Part Primitives.
Example
A Part Ellipse object created with the scripting example below is shown here.
Properties
See also: Property editor.
A Part Ellipse object is derived from a Part Feature object and inherits all its properties. It also has the following additional properties:
Data
Base
- DataMajorRadius (
Length
): The major radius of the ellipse. This is the dimension in the x-direction. - DataMinorRadius (
Length
): The minor radius of the ellipse. This is the dimension in the y-direction. - DataAngle1 (
Angle
): The first angle of the ellipse. This is the angle for the start point of the curve. - DataAngle2 (
Angle
): The second angle of the ellipse. This is the angle for the end point of the curve.
Scripting
A Part Ellipse is created with the addObject()
method of the document.
ellipse = FreeCAD.ActiveDocument.addObject("Part::Ellipse", "myEllipse")
- Where
myEllipse
is the name for the object. The name must be unique for the entire document. - The function returns the newly created object.
The Label
is the user editable name for the object. It can be easily changed by
ellipse.label = "new ellipseName"
You can access and modify attributes of the ellipse
object. For example, you may wish to modify the two radii and angles of the ellipse.
ellipse.MajorRadius = 20
ellipse.MinorRadius = 10
ellipse.Angle1 = 45
ellipse.Angle2 = 135
The result will be a part of an ellipse.
You can change its placement and orientation with:
ellipse.Placement = FreeCAD.Placement(FreeCAD.Vector(1, 2, 3), FreeCAD.Rotation(30, 45, 10))
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