com.ajc.esim.core
Class PointCharge

java.lang.Object
  com.ajc.esim.core.Charge
      com.ajc.esim.core.PointCharge

All Implemented Interfaces:

java.io.Serializable, java.lang.Comparable

public class PointCharge
extends Charge

Defines an point charge. A point charge represents a point in space (no size) that has a given electrical charge. This class holds location and charge information, it also can paint itself.

See Also:

Serialized Form

Nested Class Summary

Nested classes/interfaces inherited from class com.ajc.esim.core.Charge

Charge.ChargeType

Field Summary

Fields inherited from class com.ajc.esim.core.Charge

isSel, myShape

Constructor Summary

PointCharge(double charg, double X, double Y)
Constructor, double precision

PointCharge(double charg, int X, int Y)
Constructor, integer percision

Method Summary

boolean	isInside(double x, double y) Checks to seen if a point is inside of the charge as it is drawn on the screen
void	paint(java.awt.Graphics g) Draws this on screen with Graphics g (cast to a Graphics 2D object internally).
void	reBuildShape() Creates Shape myShape(Defined in Charge).
java.lang.String	toString()

Methods inherited from class com.ajc.esim.core.Charge

checkClick, compareTo, drawOutline, getCharge, getChargeText, getHeight, getLength, getPaintX, getPaintY, getSize, getType, getX, getY, setCharge, setType, setX, setY, toStringShort

Methods inherited from class java.lang.Object

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

Constructor Detail

PointCharge

public PointCharge(double charg,
                   double X,
                   double Y)

Constructor, double precision

Parameters:

charg - charge in Coulombs

X - Horiz. Location of charge

Y - Vert. Location of charge

PointCharge

public PointCharge(double charg,
                   int X,
                   int Y)

Constructor, integer percision

Parameters:

charg - charge in Coulombs

X - Horiz. Location of charge

Y - Vert. Location of charge

Method Detail

isInside

public boolean isInside(double x,
                        double y)

Checks to seen if a point is inside of the charge as it is drawn on the screen

Specified by:

isInside in class Charge

Parameters:

x - X Location of point to check.

y - Y Location of point to check.

Returns:

boolean True if point (x,y) is covered by this when it is painted, otherwise false.

paint

public void paint(java.awt.Graphics g)

Draws this on screen with Graphics g (cast to a Graphics 2D object internally). Sets color based on charge sign. Draws this.myShape.

Specified by:

paint in class Charge

Parameters:

g - Graphics object used to paint.

See Also:

Charge.myShape

reBuildShape

public void reBuildShape()

Creates Shape myShape(Defined in Charge). The shape is defined as a Shape in Charge, it is set as a PointChargeShape in this method.

Specified by:

reBuildShape in class Charge

See Also:

sci.gui.PointChargeShape, Charge.myShape

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object

Returns:

String representing the data stored in this charge