org.opensourcephysics.sip.ch08.hd
Class HardDisks

java.lang.Object
  org.opensourcephysics.sip.ch08.hd.HardDisks

All Implemented Interfaces:

Drawable

public class HardDisks
extends java.lang.Object
implements Drawable

HardDisks evolves a two-dimensional system of hard disks.

Field Summary

double	bigTime
double[]	collisionTime
double	keSum
double	Lx
double	Ly
int	N
int	nextCollider
int	nextPartner
int	numberOfCollisions
int[]	partner
double	t
double	temperature
double	timeToCollision
double	virialSum
double[]	vx
double[]	vy
double[]	x
double[]	y

Constructor Summary

HardDisks()

Method Summary

void	checkCollision(int i, int j)
void	contact()
void	draw(DrawingPanel drawingPanel, java.awt.Graphics g) Draws the hard disks by painting circles at each hard disk location.
void	initialize(java.lang.String configuration)
void	minimumCollisionTime()
void	move()
void	newCollisionTimes()
double	pressure() Computes the pressure.
void	resetAverages()
void	setDefaultCollisionTimes()
void	setRandomPositions()
void	setRegularPositions()
void	setVelocities()
void	step()

Methods inherited from class java.lang.Object

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

Field Detail

x

public double[] x

y

public double[] y

vx

public double[] vx

vy

public double[] vy

collisionTime

public double[] collisionTime

partner

public int[] partner

N

public int N

Lx

public double Lx

Ly

public double Ly

keSum

public double keSum

virialSum

public double virialSum

nextCollider

public int nextCollider

nextPartner

public int nextPartner

timeToCollision

public double timeToCollision

t

public double t

bigTime

public double bigTime

temperature

public double temperature

numberOfCollisions

public int numberOfCollisions

Constructor Detail

HardDisks

public HardDisks()

Method Detail

initialize

public void initialize(java.lang.String configuration)

resetAverages

public void resetAverages()

setVelocities

public void setVelocities()

setRandomPositions

public void setRandomPositions()

setRegularPositions

public void setRegularPositions()

checkCollision

public void checkCollision(int i,
                           int j)

step

public void step()

minimumCollisionTime

public void minimumCollisionTime()

move

public void move()

contact

public void contact()

setDefaultCollisionTimes

public void setDefaultCollisionTimes()

newCollisionTimes

public void newCollisionTimes()

pressure

public double pressure()

Computes the pressure. Corrected 04/04/2006

Returns:

double

draw

public void draw(DrawingPanel drawingPanel,
                 java.awt.Graphics g)

Draws the hard disks by painting circles at each hard disk location.

Specified by:

draw in interface Drawable

Parameters:

drawingPanel - DrawingPanel

g - Graphics