Regression in handling splines? 3.23.0→3.24.2

[kaur]

Working on a DXF with splines, there is a bug in handling splines that appears in two possible workflows. When done in 3.25.2 or 3.24.2, the problem occurs, but when going back to 3.23.0, everything works correctly.

1. Open file, save as DXF R27, re-open, the splines are broken
2. Open file, select all, modify→explode, one spline disappears

[andrew]

There seems to be something odd about those splines indeed.

I couldn't quite figure out what so far.

Here's a workaround that seems to work though:
- Load a194673.dxf
- Select all
- Misc > Modify > Convert Splines to Bézier Segments

Note that this leaves behind some zero length splines you might want to clean up.

[kaur]

Thanks for the reply. Are you going to look into it further? Since it works in the older version, we would also like to have it working again in newer versions too.

[andrew]

The problem seems to be caused by one of the OpenDesign updates (from 4.3.2 to 20.x). Any fix would have to be a workaround for that OpenDesign bug. I'd recommend to rollback to the last working QCAD version as this is a complex problem and there are not many affected (it cannot occur with QCAD generated files).

[kaur]

Thanks for clearing this up. Going through the changelog I suspected it might be related to the ODA update so I know it's that and might not be fixed any time soon.

[andrew]

Meanwhile, I've actually found a workaround which is implemented for the next release.

[kaur]

Sounds great, thanks!