Simplification and remeshing of STL parts

Tools

Simplification (mesh reduction) of 3d models can be used to approximate or repair the geometry. It allows to make easy STL unwrappings (flattenings) for example by:

• fogleman/simplify
• AutoDesk MeshMixer
• meshlab
• GeometryCollective/fieldgen
• Blender
• songrun/SeamAwareDecimate

• Fast-Quadric-Mesh-Simplification

• 3dless.com (github.com/ipepe/3dless-com)

fogleman/simplify

go get -u github.com/fogleman/simplify/cmd/simplify
mv ~/go/bin/simplify /bin/
 
#run simplify
simplify ... #only works for binary

Python libraries

• numpy-stl
• trimesh
• pymesh

• open3d

• zmesh

• OpenMesh

trimesh library

Linux

sudo apt-get install -y python3-rtree
pip3 install trimesh[easy]

Windows

https://www.lfd.uci.edu/~gohlke/pythonlibs/#rtree
pip install Rtree-0.9.4-cp38-cp38-win_amd64.whl
pip install trimesh[easy]