org.opensourcephysics.sip.ch06
Class PoincareApp

java.lang.Object
  org.opensourcephysics.controls.AbstractAnimation
      org.opensourcephysics.controls.AbstractSimulation
          org.opensourcephysics.sip.ch06.PoincareApp

All Implemented Interfaces:

java.lang.Runnable, Animation, Simulation

public class PoincareApp
extends AbstractSimulation

PoincareApp plots a phase diagram and a Poincare map for the damped, driven pendulum.

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

PoincareApp()
Constructs a PoincareApp.

Method Summary

void	clear() Clears the plots.
void	doStep() Does a step by advancing the time by PI.
void	initialize() Initializes the animation and clears the plots.
static void	main(java.lang.String[] args) Starts the Java application.
void	reset() Resets all parameters to their defaults.

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

PoincareApp

public PoincareApp()

Constructs a PoincareApp.

Method Detail

reset

public void reset()

Resets all parameters to their defaults.

Overrides:

reset in class AbstractSimulation

doStep

public void doStep()

Does a step by advancing the time by PI. Multiple data points are added to the phase space plot in a single step in order to produce a smooth curve. Because the angular frequency of the external force equals two, a single data point is added to the Poincare map at the end of the step.

Specified by:

doStep in class AbstractAnimation

initialize

public void initialize()

Initializes the animation and clears the plots.

Overrides:

initialize in class AbstractSimulation

clear

public void clear()

Clears the plots.

main

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

Starts the Java application.

Parameters:

args - command line parameters