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Losing colour and orientation on export

Posted: Sun Jul 11, 2021 11:01 pm
by Lourens1190
G'day everyone,

I am VERY new to working with point clouds, so pardon my newbie questions.
Firstly, thanks to everyone (especially Daniel) for your hard work and contributions for an amazing product and forum!

As per the subject, I am losing colour and orientation on export.

I have converted my Point Cloud to a mesh and exported it to fbx. ascii and when imported in Navisworks, for some reason the colour result is not as expected.
Also, the (Z) orientation is not in the direction it should be.

What have I done wrong?

Thanks!
CC Capture.JPG
CC Capture.JPG (113.47 KiB) Viewed 1020 times
Navis Capture.JPG
Navis Capture.JPG (148.06 KiB) Viewed 1020 times

Re: Losing colour and orientation on export

Posted: Tue Jul 13, 2021 12:38 pm
by daniel
So one thing is that the colors should be exported as 'per-vertex colors'. Not all programs manage per-vertex colors. Otherwise there's another issue (but it's hard to tell).

And for the Z axis, it's maybe also a question of convention. CloudCompare reads the points as they are organized in the input file, and then outputs them in the same order (x, y, z). Therefore I would be surprised that CloudCompare changes the original data orientation.