Seth Hillbrand e0fc7b2b88 Some fixes for DXF import
In order to find elements, we need to have bbox correctly set.  ::min()
for doubles, just gives the smallest positive value.  So negative placed
graphics don't trigger the right bbox and they get nopped out of
existence.

Similarly, following the advice from @msteinbeck, we elevate the degree
of the spline before converting it to beziers in order to properly
represent in KiCad

Fixes https://gitlab.com/kicad/code/kicad/-/issues/11153
2024-08-21 16:24:13 -07:00
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