App OriginGroupExtension
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Introduction
An App Origin object, or formally an App::OriginGroupExtension
, is a class supplying selectable elements that represent the three standard axes (X, Y, Z) and three standard planes (XY, XZ and YZ) to objects that are intended to arrange different types of geometry in space.
Std Part (App Part) objects and PartDesign Body objects are created with Origin objects by default.
If needed, Origin objects can be added to Assembly objects of the Assembly3 workbench, too.
Left: The tree view showing the three types of objects that use Origin objects. Right: Representation of the Origin elements in the 3D view.
The axes and planes are objects of type App::Line
and App::Plane
respectively. Each of these elements can be hidden and unhidden individually with the Space bar; this is useful to choose the correct reference when creating other objects e.g. Sketches.
Simplified diagram of the relationships between the core objects in the program. Two of them have an Origin object to control the placement of the objects grouped under it.
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