pylmesh

pylmesh is a lightweight python library for importing and exporting surface mesh files in multiple formats. The library is designed in C++ with python bindings to feature high performance and loading large scale meshes.

Supported Formats

• OBJ (Wavefront) - Import/Export
• STL (ASCII) - Import/Export
• PLY (ASCII) - Import/Export
• OFF (Object File Format) - Import/Export
• GLTF - Import/Export
• GLB - Import/Export (with Draco compression)

Usage

Python

import pylmesh

# Load mesh
mesh = pylmesh.load_mesh("model.obj")
print(f"Vertices: {mesh.vertex_count()}")
print(f"Faces: {mesh.face_count()}")

# Compute surface area
area = mesh.surface_area()
print(f"Surface area: {area}")

# Save mesh
pylmesh.save_mesh("output.stl", mesh)

C++

#include <pylmesh/loader.h>
#include <pylmesh/exporter.h>

pylmesh::Mesh mesh;
if (pylmesh::MeshLoaderFactory::loadMesh("model.obj", mesh)) {
    // Use mesh data
    pylmesh::MeshExporterFactory::saveMesh("output.stl", mesh);
}

Installation

System Requirements

macOS:

brew install libomp

Linux (Ubuntu/Debian):

sudo apt-get install libomp-dev

Linux (Fedora/RHEL):

sudo dnf install libomp-devel

Python Package

Core functionality only (no dependencies):

pip install pylmesh

With optional features:

# Add development tools
pip install pylmesh[dev]

From source:

pip install .

C++ Library

mkdir build && cd build
cmake ..
make

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