Draft OCA

Description
Draft OCA is a software module used by the Std Open,  Std Import and  Std Export commands to handle the OCA file format.

The OCA file format is community effort to create a free, simple and open CAD file format. OCA is largely based on the GCAD file format generated from gCAD3D. Both formats can be imported in FreeCAD, and the OCA files exported by FreeCAD can be opened in gCAD3D.

Importing
The following OCA objects can be imported:
 * Lines
 * Arcs and Circles
 * Closed areas

Exporting
The following FreeCAD objects can be exported:
 * Lines and wires (polylines)
 * Arcs and circles
 * Faces

Preferences
For more information see: Import Export Preferences.

Scripting
Draft API and FreeCAD Scripting Basics.

You can export elements to OCA by using the following function:

Example: