John Lewin f312a1ae20 Handle null mesh scenarios ... - Issue MatterHackers/MCCentral#2806 NullReferenceException in BackToFrontXY due to empty mesh		2018-02-09 13:55:28 -08:00
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agg-sharp@8016bf08c8	Fixed a bug with putting trace data on a mesh with no faces	2018-02-09 12:06:46 -08:00
MatterSlice@ab9ae85941	Handle null mesh scenarios	2018-02-09 13:55:28 -08:00