Class Particle

java.lang.Object
  Particle

public class Particle
extends java.lang.Object

A Particle is a 2D colored dot that follows basic physics. It has a velocity and is affected by gravity. It is able to move itself and to draw itself.

Author:

Tim

Field Summary

static double

GRAVITY The acceleration (in pixels per frame) due to "Gravity"

Constructor Summary

Particle(double hue, double angle, double speed, double startX, double startY)
Creates a new Particle based on the given parameters.

Method Summary

void	drawSelf(java.awt.Graphics graphics) Draw this Particle onto the provided Graphics object
int	getTimesMoved() Return the number of times this Particle has been moved.
double	getXPosition() Return the X position of this Particle
double	getYPosition() Return the Y position of this Particle
void	takeOneStep() Move this Particle one frame's worth of movement

Methods inherited from class java.lang.Object

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

Field Detail

GRAVITY

public static final double GRAVITY

The acceleration (in pixels per frame) due to "Gravity"

See Also:

Constant Field Values

Constructor Detail

Particle

public Particle(double hue,
                double angle,
                double speed,
                double startX,
                double startY)

Creates a new Particle based on the given parameters. You can specify the color, position, and velocity. The angle should be in degrees from 0 to 360. The speed should be in pixels per frame. The coordinates should be in java coordinates, so (0,0) is the upper lefthand corner
If you give 0 for the color, you get green. .2 gives orange, .3 gives pink, .4 gives magenta, .5 gives violet, .6 gives blue, .8 gives cyan, and 1 returns to green.

Parameters:

hue - A number from 0 to 1 that specifies desired hue of the Particle

angle - The desired angle in degress

speed - The desired speed in pixels per frame

startX - The starting x coordinate

startY - The starting y coordinate

Method Detail

drawSelf

public void drawSelf(java.awt.Graphics graphics)

Draw this Particle onto the provided Graphics object

Parameters:

graphics - The Graphics object to draw onto.

takeOneStep

public void takeOneStep()

Move this Particle one frame's worth of movement

getXPosition

public double getXPosition()

Return the X position of this Particle

Returns:

The X position

getYPosition

public double getYPosition()

Return the Y position of this Particle

Returns:

The Y position

getTimesMoved

public int getTimesMoved()

Return the number of times this Particle has been moved.

Returns:

The number of times this particle has been moved