org.opensourcephysics.sip.ch19
Class ConstraintsApp

java.lang.Object
  org.opensourcephysics.controls.AbstractAnimation
      org.opensourcephysics.controls.AbstractSimulation
          org.opensourcephysics.sip.ch19.ConstraintsApp

All Implemented Interfaces:

java.lang.Runnable, Animation, Simulation, ODE

public class ConstraintsApp
extends AbstractSimulation
implements ODE

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

ConstraintsApp()

Method Summary

void	doStep() Does an animation step.
void	getRate(double[] state, double[] rate) Gets the rate of change using the argument's state variables.
double[]	getState() Gets the state variables.
void	initialize() Initializes the simulation.
static void	main(java.lang.String[] args)
void	reset() Resets the simulation to its default state.
void	startRunning() Performs an action before executing one or more animation steps.

Methods inherited from class org.opensourcephysics.controls.AbstractSimulation

enableStepsPerDisplay, getControl, getLoader, getStepCounter, getStepsPerDisplay, initializeAnimation, resetAnimation, run, setControl, setStepsPerDisplay, start, startAnimation, 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

ConstraintsApp

public ConstraintsApp()

Method Detail

getState

public double[] getState()

Description copied from interface: ODE

Gets the state variables. The getState method is invoked by an ODESolver to obtain the initial state of the system. The ODE solver advances the solution and then copies new values into the state array at the end of the solution step.

Specified by:

getState in interface ODE

Returns:

state the state

getRate

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

Description copied from interface: ODE

Gets the rate of change using the argument's state variables. This method may be invoked many times with different intermediate states as an ODESolver is carrying out the solution.

Specified by:

getRate in interface ODE

Parameters:

state - the state array

rate - the rate array

initialize

public void initialize()

Description copied from class: AbstractSimulation

Initializes the simulation. Override this method to initialize a concrete simulation.

Overrides:

initialize in class AbstractSimulation

doStep

public void doStep()

Description copied from class: AbstractAnimation

Does an animation step.

Specified by:

doStep in class AbstractAnimation

startRunning

public void startRunning()

Description copied from class: AbstractSimulation

Performs an action before executing one or more animation steps.

Overrides:

startRunning in class AbstractSimulation

reset

public void reset()

Description copied from class: AbstractSimulation

Resets the simulation to its default state. Override this method to set the simulation's parameters.

Overrides:

reset in class AbstractSimulation

main

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