In short, find intersections of Ellipse and circle... Good luck :) <bountysource-plugin> --- Want to back this issue? **[Post a bounty on it!](https://www.bountysource.com/issues/64373073-implent-collision-with-magneticparticle-and-ellipse?utm_campaign=plugin&utm_content=tracker%2F51484979&utm_medium=issues&utm_source=github)** We accept bounties via [Bountysource](https://www.bountysource.com/?utm_campaign=plugin&utm_content=tracker%2F51484979&utm_medium=issues&utm_source=github). </bountysource-plugin>