GeomPP — Python Bindings

Python bindings for geompp — a C++ 2D/3D geometry library.

Changelog — full release notes for every version.

Install

pip install geompp

Pre-built wheels are available for:

Platform Python versions
Linux x86_64 3.8 · 3.9 · 3.10 · 3.11 · 3.12 · 3.13 · 3.14
Windows x64 3.8 · 3.9 · 3.10 · 3.11 · 3.12 · 3.13 · 3.14

If your platform or Python version is not in the table above, pip will compile from source — you will need CMake ≥ 3.15 and a C++20-capable compiler.

Classes

2D 3D
Point2D Point3D
Vector2D Vector3D
Line2D Line3D
Ray2D Ray3D
LineSegment2D LineSegment3D
Polyline2D Polyline3D
Triangle2D Triangle3D
Polygon2D Polygon3D
BBox2D BBox3D
BBall2D BBall3D
BRect2D
BPrism3D
GeometryCollection2D GeometryCollection3D
Plane
View2D

Free functions

Function Description
are_collinear(p1, p2, p3) Three points on the same line
are_coplanar(points) List of Point3D on the same plane
closest_world_plane_to(points) XY / YZ / ZX plane nearest to the point cloud
are_ccw(points[, ref_plane]) Counter-clockwise winding (2D or 3D)
are_cw(points[, ref_plane]) Clockwise winding (2D or 3D)
remove_collinear(points) Drop collinear intermediate points
remove_duplicates(points) Drop duplicate points
average(points) Arithmetic mean
linear_combination(points, weights) Weighted sum
has_intersections(segments) Shamos–Hoey: True if any two segments in list[LineSegment2D] cross
find_intersections(segments) Bentley–Ottmann: returns list[Point2D] — every crossing point, sorted left-to-right
convex_hull(points) Andrew's monotone chain: convex hull of a list[Point2D], returned in CCW order
convex_hull(points, normal=None) Convex hull of a coplanar list[Point3D]; optional Vector3D normal (auto-detected if omitted)
principal_axes(points) PCA on a list[Point3D]: returns CoordinateFrame (.x primary, .y secondary, .z best-fit normal)
principal_normal(points) Best-fit plane normal of a list[Point3D] (PCA eigenvector with smallest eigenvalue)
principal_direction(points) Dominant direction of a list[Point3D] (PCA eigenvector with largest eigenvalue)
tangents_to(polygon, point_or_polygon) PolygonTangents2D/PolygonTangents3D (.left/.right) — tangent segments to a point, or common outer tangents to another polygon

How to use it

You can look at the test suite to see detailed usage.

A quick list of code examples per topic is provided here.

👉 View Full Code Examples on Github

Project links

Key dates

PyPI data
Data sourced directly from PyPI's database.
  • Released:
Newer release available (0.17.3)

1 maintainer

PyPI data
Data sourced directly from PyPI's database.
Avatar for AngeloM from gravatar.com AngeloM

License

MIT License (MIT)

Requires

Python >=3.8

Provides Extra

dev

Tags

geometry 2d 3d spatial math computational-geometry polygon polyline point-cloud convex-hull bounding-box cpp c++ cad gis

Classifiers

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