JSPM

A module to check if a polygon self-intersects using a sweepline algorithm

This library may not be fast, but it is robust. Robust in the fact that it will find all of the self-intersections in a polygon - minus of course shared endpoints.

Euclidean geometry classes and tools for JavaScript

test whether a ray intersects with a sphere

Intersection plugin for svg.js

Fast 2d geometry math: Vector2, Rectangle, Circle, Matrix2x3 (2D transformation), Circle, BoundingBox, Line2, Segment2, Intersections, Distances, Transitions (animation/tween), Random numbers, Noise

Yet another set of libraries

Standalone library to get all intersections between 2 SVG paths

It Calculates “Outersections” of ranges.

basic geometry helpers