Draft OCA

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Draft OCA

Menu location
File → Export → Open CAD format (*.oca)
Workbenches
Draft
Default shortcut
Ctrl+E
Introduced in version
-
See also
Draft SVG, Draft DXF


Description

This function imports OCA/GCAD files. 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.

Opening

The following OCA objects get imported at the moment:

  • Lines
  • Arcs and Circles
  • Closed areas

Importing

Works the same way as opening but places the objects in the active document instead of creating a new one.

Exporting

Objects that can be exported at the moment:

  • Lines and wires (polylines)
  • Arcs and circles
  • Faces

Preferences

The following parameters can be specified in the Draft Preferences tab (menu Edit -> Preferences -> Draft):

  • Import closed areas or not

Scripting

See also: Draft API and FreeCAD Scripting Basics.

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

importOCA.export(exportList, filename)

Example:

import FreeCAD, Draft, importOCA

p1 = FreeCAD.Vector(0, 0, 0)
p2 = FreeCAD.Vector(1000, 1000, 0)
p3 = FreeCAD.Vector(2200, 1500, 0)
p4 = FreeCAD.Vector(2500, -100, 0)

obj1 = Draft.makeWire([p1, p2, p3, p4])
obj2 = Draft.makeWire([p1, -2.3*p2, -0.8*p3, -1.8*p4])

objects = [obj1, obj2]

importOCA.export(objects, "/home/user/Pictures/myfile.oca")