ballworld.model.paint

Class ImagePaintStrategy

java.lang.Object

ballworld.model.paint.APaintStrategy

ballworld.model.paint.ImagePaintStrategy

All Implemented Interfaces:

IPaintStrategy

Direct Known Subclasses:

PlanetImagePaintStrategy, SoccerImagePaintStrategy, UprightImagePaintStrategy

public class ImagePaintStrategy
extends APaintStrategy

Paint strategy that paints an image from a file, scaled to the host Ball's radius. Note that this class cannot be used by the BallWar system directly as it is missing a no-parameter constructor.

Field Summary

Fields

Modifier and Type	Field and Description
private double	fillFactor The percentage of the average of the width and height of the image that defines a unit radius for the image.
private java.awt.Image	image The image to paint
private java.awt.image.ImageObserver	imageObs ImageObserver needed for some image operations
protected java.awt.geom.AffineTransform	localAT A local affine transform used to transform the image into its unit size and location.
private double	scaleFactor Ratio of the unit radius circle to the effective radius size of the image.
protected java.awt.geom.AffineTransform	tempAT

Fields inherited from class ballworld.model.paint.APaintStrategy

at

Fields inherited from interface ballworld.model.IPaintStrategy

NullObject

Constructor Summary

Constructors

Constructor and Description
ImagePaintStrategy(java.awt.geom.AffineTransform at, java.lang.String filename, double fillFactor) Constructor that takes an external AffineTransform, the filename of the image to paint and a fill factor of the image.
ImagePaintStrategy(java.lang.String filename, double fillFactor) Constructor that takes the image filename and fill factor.

Method Summary

Methods

Modifier and Type	Method and Description
void	init(Ball host) Initializes the internal ImageObserver reference from the host Ball Also calculates the net scale factor for the image.
void	paintXfrm(java.awt.Graphics g, Ball host, java.awt.geom.AffineTransform at) Draws the image on the given Graphics context using the given affine transform in combination with the local affine transform.

Methods inherited from class ballworld.model.paint.APaintStrategy

paint, paintCfg

Methods inherited from class java.lang.Object

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

Field Detail

imageObs

private java.awt.image.ImageObserver imageObs

ImageObserver needed for some image operations

image

private java.awt.Image image

The image to paint

scaleFactor

private double scaleFactor

Ratio of the unit radius circle to the effective radius size of the image. This is the inverse of the fill factor times half the average of the width and height of the image.

fillFactor

private double fillFactor

The percentage of the average of the width and height of the image that defines a unit radius for the image. This is also the collision bounds of the image in terms of a percentage.

localAT

protected java.awt.geom.AffineTransform localAT

A local affine transform used to transform the image into its unit size and location.

tempAT

protected java.awt.geom.AffineTransform tempAT

Constructor Detail

ImagePaintStrategy

public ImagePaintStrategy(java.lang.String filename,
                  double fillFactor)

Constructor that takes the image filename and fill factor. An AffineTransform is instantiated for internal use. GIF, JPG, PNG and any other file that can be loaded by an ImageIcon object can be used, including animated GIF's as the above files are.

Parameters:

filename - The filename of the image file to use.

fillFactor - The ratio of the desired average radius of the image to the actual average of the image's width and height.

ImagePaintStrategy

public ImagePaintStrategy(java.awt.geom.AffineTransform at,
                  java.lang.String filename,
                  double fillFactor)

Constructor that takes an external AffineTransform, the filename of the image to paint and a fill factor of the image.

Parameters:

at - The AffineTransform to use internally.

filename - The filename of the image file to use.

fillFactor - The ratio of the desired average diameter of the image to the actual average of the image's width and height.

Method Detail

paintXfrm

public void paintXfrm(java.awt.Graphics g,
             Ball host,
             java.awt.geom.AffineTransform at)

Draws the image on the given Graphics context using the given affine transform in combination with the local affine transform.

Specified by:

paintXfrm in class APaintStrategy

Parameters:

g - The graphics context to paint on

host - The host Ball

at - The AffineTransform to use.

init

public void init(Ball host)

Initializes the internal ImageObserver reference from the host Ball Also calculates the net scale factor for the image.

Specified by:

init in interface IPaintStrategy

Overrides:

init in class APaintStrategy

Parameters:

host - The host Ball