mikedh/trimesh

Health v2 · maintenance only

Adoption not part of the score

3681 stars · 673 forks observed · 2026-09-21

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-29, confidence not recorded

Trimesh is a pure Python library for loading, manipulating, and analyzing triangular meshes with an emphasis on watertight surfaces. It provides a well-tested Trimesh object in the style of Shapely's Polygon, supporting many 3D formats like STL, PLY, OBJ, and GLTF with only numpy as a hard dependency.

Use cases

• load and analyze STL or OBJ mesh files in Python
• check if a 3D mesh is watertight and repair it
• compute mesh volume, surface area, and curvature
• convert between 3D file formats like GLTF, PLY, and 3MF
• perform ray-mesh intersection queries
• voxelize a triangular mesh
• manipulate and transform 3D geometry for robotics or 3D printing

When to choose

• you need a lightweight, easy-to-install Python library for 3D mesh processing
• you want watertight mesh analysis like volume, collision, and ray queries
• you need to load/export many 3D formats with minimal dependencies
• you want Shapely-like ergonomics for 3D geometry

When to avoid

• you need a full interactive 3D modeling or CAD application
• you require guaranteed API stability across versions without pinning
• you need heavy GPU-accelerated mesh processing at scale

Facets

library · maturity stable

image-processing graphics parser math data-visualization computer-vision graphics simulation robotics python cross-platform windows triangular-meshes 3d-geometry stl gltf obj watertight-meshes ray-tracing voxels numpy 3d-models linux macos

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