Package cnuphys.rk4

Interface IDerivative

All Known Implementing Classes:
DefaultDerivative, SectorDerivative, SectorSwimZDerivative, SwimZDerivative
public interface IDerivative
This interface is where the specificity of the problem enters. Any integrator such as RungeKutta will solve 1st order ODEs of the form dy/dt = f(t). The vector y is often a six-D vector [x, y, z, dx/dy, dy/dt, dz/dt]. The specificity of the problem is implemented by filling the dydt vector.
Author:
heddle

  • Method Summary

    Modifier and Type
    Method
    Description
    void
    derivative(double t, double[] y, double[] dydt)
    Compute the derivatives given the value of the independent variable and the values of the function.

  • Method Details

    • derivative

      void derivative(double t, double[] y, double[] dydt)
      Compute the derivatives given the value of the independent variable and the values of the function. Think of the Differential Equation as being dydt = f[y,t].
      Parameters:
      t - the value of the independent variable (usually t) (input).
      y - the values of the state vector (usually [x,y,z,vx,vy,vz]) at t (input).
      dydt - will be filled with the values of the derivatives at t (output).