The ariaDNE function automatically search for files with the suffix "_watertight" to use for ray tracing.
If such a file doesn't exists, it will use the given mesh for ray casting.
Watertight mesh versions can be generated by using the script below.
This script preprocesses 3D mesh files by making them watertight and performing cleanup operations.
Example of preprocessing and generating watertight versions of all files in a folder.
python preprocess.py data/