Package com.titan.math.solver

Class RungeKuttaSolver

java.lang.Object

com.titan.math.solver.RungeKuttaSolver

All Implemented Interfaces:

Solver

public class RungeKuttaSolver
extends Object
implements Solver

RungeKuttaSolver implements Solver:
implementation of the Runge-Kutta-Solver approximation method
k1 = h * f(wi, ti);
k2 = h * f(wi + k1, ti + h/2);
k3 = h * f(wi + k2, ti + h/2);
k4 = h * f(wi + k3, ti);
wi+1 = wi + 1/6 * (k1 + 2*k2 + 2*k3 + k4)

Constructor Summary

Constructors

Constructor	Description
RungeKuttaSolver()

Method Summary

Modifier and Type	Method	Description
Vector[]	solve(Function f, Vector positions, Vector velocities, Vector masses, double h, double t)	this method calculates the positions and velocities of all celestial objects after every iteration using the 4 stage Runge-Kutta method

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

RungeKuttaSolver

public RungeKuttaSolver()

Method Details

solve

public Vector[] solve(Function f,
 Vector positions,
 Vector velocities,
 Vector masses,
 double h,
 double t)

this method calculates the positions and velocities of all celestial objects after every iteration using the 4 stage Runge-Kutta method

Specified by:

solve in interface Solver

Parameters:

f - Function that is used to estimate the next step

positions - vector of all the positions

velocities - vector of all the velocities

masses - masses (used like this in the instances of this interface)

h - step-size

t - step we are currently on

Returns:

resulting Vector of the function