org.opensourcephysics.sip.ch05
Class Planet2App

java.lang.Object
  org.opensourcephysics.controls.AbstractAnimation
      org.opensourcephysics.controls.AbstractSimulation
          org.opensourcephysics.sip.ch05.Planet2App

All Implemented Interfaces:

java.lang.Runnable, Animation, Simulation

public class Planet2App
extends AbstractSimulation

Planet2App models and displays two interacting planets in the presence of a central inverse square law force. This application demonstrates:

1. how to use the ODE interface.
2. how to use the ODESolver interface.
3. how to use the Animation control to run and single-step a differential equation.

Students should test other ODESolvers in the Numerics package.

Field Summary

Fields inherited from class org.opensourcephysics.controls.AbstractSimulation

control, showStepsPerDisplay, stepCounter, stepsPerDisplay

Fields inherited from class org.opensourcephysics.controls.AbstractAnimation

animationThread, decimalFormat, delayTime, mainFrame

Constructor Summary

Planet2App()
Constructs the PlanetApp.

Method Summary

void	doStep() Steps the time.
void	initialize() Initializes the animation using the values in the control.
static void	main(java.lang.String[] args) Start Java application.
void	reset() Resets animation to a predefined state.

Methods inherited from class org.opensourcephysics.controls.AbstractSimulation

enableStepsPerDisplay, getControl, getLoader, getStepCounter, getStepsPerDisplay, initializeAnimation, resetAnimation, run, setControl, setStepsPerDisplay, start, startAnimation, startRunning, startSimulation, stepAnimation, stop, stopAnimation, stopRunning, stopSimulation

Methods inherited from class org.opensourcephysics.controls.AbstractAnimation

addChildFrame, clearChildFrames, getChildFrames, getDelayTime, getMainFrame, getOSPApp, isRunning, setDelayTime

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.opensourcephysics.controls.Simulation

isRunning

Constructor Detail

Planet2App

public Planet2App()

Constructs the PlanetApp.

Method Detail

doStep

public void doStep()

Steps the time.

Specified by:

doStep in class AbstractAnimation

initialize

public void initialize()

Initializes the animation using the values in the control.

Overrides:

initialize in class AbstractSimulation

reset

public void reset()

Resets animation to a predefined state.

Overrides:

reset in class AbstractSimulation

main

public static void main(java.lang.String[] args)

Start Java application.

Parameters:

args - command line parameters