View from inside a spacetime with six black holes at octahedral vertices, each horizon distinctly colored
Renders the interior view of a Majumdar-Papapetrou spacetime containing six extremally charged black holes arranged at the vertices of a regular octahedron. Null geodesics are integrated on the GPU using an RK4 scheme with adaptive step sizing based on the conformal potential gradient. Rays that cross an event horizon are colored by which black hole captured them, while escaping rays sample the environment map.
Controls: Click and drag to orbit, scroll to zoom.
