Faster COPC export: Feedback on new COPC export performace

[andyroo]

Thanks for adding COPC export! I love that I can do this natively in metashape now and preserve normals and confidence values in COPC format LAZ files. BUT wow it's slow.

I posted some feedback in the original feature request thread (probably the wrong place) but the TLDR is:

exporting COPC is about 40x slower than outputting normal laz files, which makes exporting large dense clouds.... problematic. (minutes turn into hours, and hours into days).

QGIS automatically converts LAZ to COPC on import about 60x faster than I can export them from Metashape, but  (bug) they drop all the extra bytes data, and RapidLasso's copcindex64 is even slower than Metashape's native export and mangles the CRS (maybe fixed).

[Alexey Pasumansky]

Hello andyroo,

In the next version update (2.1.2) COPC export speed will be improved, approximately by 7 times, compared to version 2.1.1.