Posted by PCB.Wiz on Jun 20, 2016; 11:39pm
URL: https://forum.librecad.org/DXF-read-gives-only-points-no-lines-2-1-0-tp5713964p5713983.html

Here are 2 more test cases.
( tested in kiCAD which I think uses this same DXF engine, they do not import the same)

QCAD_R27_2013_1mm.zip

The LWPOLYLINE R27 imports ok and the POLYLINE form, R9, drops the circle and arcs.

Can you confirm both these can import into LibreCAD ok, with Arc/Circles as in your image ?
(oops, almost as in your image, I see I dragged an ARC on RHS of the square in QCAD)

ravas wrote

Everything is drawn, but it looks like:

To me, that is good :)
ARC and circle preserve is the most important.
Line width is nice to preserve too, as sometimes that has information, but less important.

DoubleCAD opens QCAD_R9_2013_1mm.dxf with re al-line width display, but has issues with R27-maybe too new ?
A9CAD opens R9, with no width (ie same as your image), but fails R27, no surprise as A9CAD is 2005 dated.

Addit: Just checking on Width,
 Straight lines W=1mm, and Circles W=0.5mm, but not drawn as circles, - seem to be as two diameters, with a bulge of 1, for two half-circles.
Manually editing those widths to 1.0 and 0.5 then renders ok.
 
eg X ends of  5.719 - 6.219, when bulged give a centre of 5.969