AEC Virtual Entities

[melihpeker-pointr]

Hi! I'm trying to get the virtual entities in an AEC_SPACE entity. The original DXF file has an AEC_SPACE entity and I'm trying to get its virtual entities by using the recommendations that @mozman give in #495.

Here's the problem. When I exploded the AEC_SPACE entity on AutoCAD the hierarchy is as follows:

AEC_SPACE -> BLOCK REFERENCE -> HATCH -> POLYLINE

However, when I used the following method for getting virtual entities I get directly the POLYLINE:

proxy_entities = list(model_space.query("ACAD_PROXY_ENTITY"))
    for proxy_entity in proxy_entities:
        if proxy_entity.proxy_graphic:
            for entity in ProxyGraphic(proxy_entity.proxy_graphic, doc).virtual_entities():
                print('Virtual inside proxy is : ' + str(entity.dxftype()))
                model_space.add_entity(entity)
            proxy_entity.destroy()  # remove original proxy entity if not required anymore

Is there any way that I can get BLOCK or HATCH entities using ProxyGraphic(proxy_entity.proxy_graphic, doc).virtual_entities() function?

I need HATCH entities inside the ACAD_PROXY_ENTITY since I don't want to draw them using drawing add-on. Since I get directly the POLYLINE, the drawing Frontend does not understand that they are hatch entities so hatch_policy=HatchPolicy.IGNORE is not working.

Also not using the virtual_entities is not an option since I need that function for other proxy entities.

The corresponding DXF file is attached.
aec_space_test.zip

Thanks in advance.

[mozman]

The proxy-graphic is a simplified graphical representation of a DXF entity, so applications which do not know the entity can at least show something to the user. There is no documentation by Autodesk for the proxy-graphic. The OpenDesign Specification for DWG has a short documentation of the data structures used in proxy-graphic data and there are only line, arc, polyline, mesh, shell and text objects.

There are no real DXF entities stored in the proxy-graphic data, what you get as virtual entities by ezdxf is already the luxury version, there are no block references or hatches stored in the proxy-graphic data and the drawing add-on shows exact that content.

[melihpeker-pointr]

Ok, thank you for the clarification.