DXF export issue

Rhino Rhino for Windows
1

IMPORTANT

V6 (6.15.19133.20241, 13.05.2019)

In this Rhino file there are 2 circles:
2Circles.3dm (26.9 KB)

_What tells me the 2 circles are really circles.
_List tells me the same.

There is a very small deviation between center and start/end in Z.
The difference is 0.000000000000001.

When I export the file to DXF using the Standard scheme, 2 circles are found in the DXF.
2Circles_Exported.DXF (161.0 KB)

But the extrusion vector went crazy:

0
CIRCLE
5
6F
330
1F
100
AcDbEntity
8
Ebene 03
100
AcDbCircle
10
-17.49999994098075
20
45.50000056370445
30
15.0
40
2.499999999999993
> 210
> -7.105427357601007E-16
> 220
> -1.009741958682897E-30
230
-1.0

This leads to problems for DXF importers in some other programs.
210 and 220 should be just 0.
Or, as the circle is flat, the extrusion vector can be left out.

_Simplify didn’t change the situation.
Simplifying on export didn’t help either.

V5 acts different.

This file
2Circles_V5.3dm (22.8 KB)
exports correct.
The extrusion vector is not written at all for the flat circles.

This DXF
2Circles_Exported_V5.DXF (162.6 KB)
doesn’t make trouble on import into other programs.

2

Hi Charles - thanks,

https://mcneel.myjetbrains.com/youtrack/issue/RH-52698

-Pascal

3

@Charles, @pascal - It looks like the v6 dxf has exactly the same numbers as the Rhino versions of those circles.
Are you getting circles with fuzzy coordinates made somewhere in Rhino?

4

The circles come from a duplicated edge of an imported file.
Not sure where it came from, I only have the Rhino file.