A module for reducing neighboring tiles into a single shape (a polygon "hull")
"A module for use with Phaser for reducing neighboring tiles in a tilemap into a single shape - a polygon "hull". For example, the demo tilemap (left) is converted into a series of hulls (right, each hull is visualized in a random color). The hulls contain information about the edges - including midpoints, normals and line lengths. See src/example/js/states/start.js for example usage.
This was built to find hulls for casting dynamic shadows in a 2D lighting engine, but the hull calculation might be useful for simplifying things like collision detection."