A simple physics engine capable of simulating General Relativity.

• Kerr and Schwarzschild spacetimes with separate coordinate systems for near-pole regions increasing accuracy
• Propagation of point particles and entities with orientation
• Integration of the equation of motion with either Runge-Kutta 4 or Dormand-Prince integrators

Folder "tests" contains some examples:

• A sine wave integrated with RK4/DP
• Shapiro delay calculator - by propagating a photon near the sun and reading the round-trip time

Some documentation of the available classes is provided at http://fizyk20.github.io/gr-engine