nbody.hpp File Reference

Gravitational N-body simulation using num::ode_verlet / num::ode_rk4. More...

#include "ode/ode.hpp"
#include <vector>
#include <utility>
#include <cstdint>
#include <cmath>
#include <string>

Go to the source code of this file.

Classes
struct	nbody::Body
struct	nbody::NBodySim

Namespaces
namespace	nbody

Enumerations
enum class	nbody::Scenario { nbody::Figure8 , nbody::SolarSystem , nbody::BinaryPlus , nbody::Galaxy }

Functions
const char *	nbody::scenario_name (Scenario s)

Detailed Description

Gravitational N-body simulation using num::ode_verlet / num::ode_rk4.

NBodySim wraps the ODE module to provide a per-frame step() interface. Each call to step(dt) runs exactly one time step of the chosen integrator:

Verlet (symplectic, default) – ode_verlet: O(h²), bounded energy error RK4 (non-symplectic) – ode_rk4: O(h⁴), secular energy drift

This lets the visualisation directly compare the two on the same scenario.

Definition in file nbody.hpp.