org.opensourcephysics.sip.ch01
Class SHOModel

java.lang.Object
  org.opensourcephysics.display.Circle
      org.opensourcephysics.sip.ch01.SHOModel

All Implemented Interfaces:

Drawable, ODE

public class SHOModel
extends Circle
implements ODE

SHOModel defines a damped simple harmonic oscillator using a system of first order differential equations.

Field Summary

Fields inherited from class org.opensourcephysics.display.Circle

color, pixRadius, x, y

Constructor Summary

SHOModel()

Method Summary

void	getRate(double[] state, double[] rate) Calculates the rate array using the given state.
double[]	getState() Gets the state array.
void	move() Moves the particle.

Methods inherited from class org.opensourcephysics.display.Circle

draw, getLoader, getX, getY, setX, setXY, setY, toString

Methods inherited from class java.lang.Object

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

Constructor Detail

SHOModel

public SHOModel()

Method Detail

getState

public double[] getState()

Gets the state array.

Specified by:

getState in interface ODE

Returns:

an array containing {x, v, t}

getRate

public void getRate(double[] state,
                    double[] rate)

Calculates the rate array using the given state. Values in the rate array are overwritten.

Specified by:

getRate in interface ODE

Parameters:

state - the state

rate - the rate

move

public void move()

Moves the particle.