Cad Viewer ignores the "invisible" attribute

[melihpeker-pointr]

Hi, while drawing some of the blocks of some of the DXF files via cad_viewer.py, I get problematic views. For example, a desk block can be seen via Autodesk Viewer as this:

However when I try to view the same DXF, same place, same blocks, same layers ON, I get a view like this on CAD Viewer:

Is there anyone encountered a similar problem? What could be the causing of the problem? This is not a single DXF issue, I got the similar problem on some of my DXF files.

Thanks!

[mozman]

Please, upload DXF file as zip-archive.

[melihpeker-pointr]

This file is not generated by AutoCAD, I create this file using the importer. I imported this block from the original file to an empty dxf file and saved it to show you. As I said before, although Autodesk Viewer views without any problem, when I read it with ezdxf, it becomes like this one.

[mozman]

OK, the ezdxf importer add-on is not very reliable, and you can not extract test data to verify unknown ezdxf issues by using ezdxf!

[melihpeker-pointr]

Of course, just wanted to show you how it looks like. As I said, I think there is a problem in reading part. I'm trying to figure out the problem.

[melihpeker-pointr]

@mozman I saved the desk block as a dxf file using AutoCAD 2022. Here, first picture is the view from AutoCAD, second is from the CAD Viewer. The block:
Desk.zip

[melihpeker-pointr]

BTW, when I try to edit the Desk drawing with BEDIT command in AutoCAD 2022, I see the following:

I think what we see here is the all attributes and hidden objects of the block and in ezdxf, we are drawing all attributes and hidden objects so the drawing looks like overlapping blocks, could that be the reason @mozman ?

[mozman]

@mbway The visibility status of the INSERT entity seems do be dependent from the invisible attribute. But this breaks some tests in 811 and I don't know why, because the "invisible" attribute is not used in the tests. Marked the failing tests by "xfail".

Current result:

Fixed version:

[mbway]

I'm afraid I don't have time to look into this right now, sorry

[mozman]

Is hopefully fixed!

[melihpeker-pointr]

Thanks for the quick fix! Also, I realised that when we explode the blocks, the exploded entities do not have the invisible attribute so while drawing exploded entities, all of the entities are drawn.

[mozman]

It is hard to say what the expected behavior should be, because I don't know if it is possible to explode invisible block references in CAD applications. I think it is also legit to explode the content of a block reference as it is.

You have two options for handling this:

1. to just examine the content, don't explode the block, use the virtual_entities() method instead, which returns the content without exploding the block reference
2. the explode()method returns an EntityQuery object, which contains references to all exploded entities and set the invisible attribute by yourself: for e in entity.explode(): e.dxf.invisible=entity.dxf.invisible

[mozman]

Collecting facts ...

In the marked area are the same INSERT entities as above but with the "invisible" attribute set to 1:

Fact 1: The "invisible" flag switches the INSERT off - independently from the LAYER state.