CloudCompare forum

OK, that means CC is bad choice for any volume calculation.
2.5D volume or mesh volume is misleading and must be avoided for any real application.

OK it clear to me the difference between convex and concave
so how to tell CC to use concave not convex to calculate area and volume?
because it is more accurate to use concave
The goal is stockpile volume calculation

I think forum can only attach one image per post

here I attacked example

hulls is generated by CC prior to any 2.5D volume calculation or even mesh
but as you can compare with hull by QGIS
CC hull is larger and can make area and volume +20% ore more (stockpile calculation)

I am trying to find area and volume of simple XYZ points
I got wrong area because convex hull code make larger perimeter with out any way to correct the hull manually (segment tool does not help)
I can get nice hull with QGIS very easily
but I want same hull result in CC for correct are and volume ...