A port of Lode Vandevenne's C++ raycaster example to JavaScript/HTML5.

This is a port of inkandswitch/interactive-shape-recognition, an implementation of "A Simple Approach to Recognise Geometric Shapes Interactively" by Joaquim A. Jorge and Manuel J. Fonseca.

Calculate the area of a simple 2D polygon given its vertices. This is a port of the math-utils/area-polygon library written in JavaScript.