3D Surface Analysis – Direction and Shape

I have high-resolution 3D scans of worked stone surfaces.

I need analysis of two things:

1. Tool direction (micro-scale)

determine dominant movement direction from surface traces
measure consistency
angle relative to main feature direction

2. Surface shape (macro-scale)

extract cross-sections
compare left vs right sides
check if sides have similar shape/curvature
compare shape across vs along the feature

OUTPUT

dominant direction + spread
angle relative to feature
cross-section comparisons
simple, clear visuals

IMPORTANT

use micro-scale only for direction
use macro-scale only for shape
keep it simple and physically correct

TOOLS

CloudCompare, Python, or similar