algovi_descr

 The Separating Axis Theorem (SAT) can be used to check for collisions between two polygons or
 between a circle and a polygon. The polygons have to be convex, which, roughly speaking, means that
any line drawn through the shape crosses it twice, and no more.
To help visualizing it in your head: if there is a separating axis, you can draw a line (perpendicular to that
separating axis) which does not touch the objects -> no collision.

In the animation there is a small coordinate system. A smaller range was needed because otherwise
normalized vectors wouldn't be drawn correctly.
The box on the right hand side keeps track of important values/calculations that are needed for the test.