ec.app.mona

Class Picture

java.lang.Object

ec.app.mona.Picture

All Implemented Interfaces:

java.io.Serializable, java.lang.Cloneable

public class Picture
extends java.lang.Object
implements java.lang.Cloneable, java.io.Serializable

Picture contains two images: an ORIGINAL image which is loaded from a file, and writable IMAGE, which you scribble on and try to make as similar to the ORIGINAL.

See Also:

Serialized Form

Field Summary

Fields

Modifier and Type	Field and Description
java.awt.Graphics	graphics
java.awt.image.BufferedImage	image
java.awt.image.BufferedImage	original

Constructor Summary

Constructors

Constructor and Description
Picture()

Method Summary

Modifier and Type	Method and Description
void	addPolygon(double[] vals, int offset, int numVertices) Adds a polygon with the given colors.
void	clear() Erases the image.
java.lang.Object	clone()
java.awt.image.BufferedImage	copyImage(java.awt.image.BufferedImage image)
void	display(java.lang.String title) For debugging only.
void	disposeGraphics()
double	error() Computes the sum squared error between the image and the original.
void	load(java.io.File file) Loads the original and creates a new blank image to scribble on, and a new graphics object.
void	save(java.io.File file) Saves the image (not the original) out to a PNG file so you can compare.

Methods inherited from class java.lang.Object

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

Field Detail

original

public java.awt.image.BufferedImage original

image

public java.awt.image.BufferedImage image

graphics

public java.awt.Graphics graphics

Constructor Detail

Picture

public Picture()

Method Detail

disposeGraphics

public void disposeGraphics()

addPolygon

public void addPolygon(double[] vals,
                       int offset,
                       int numVertices)

Adds a polygon with the given colors. ALL double values passed in must be 0.0 ... 1.0. The values are taken starting at vals[offset]. The first four values are colors and alpha. The remaining values are the x and y values of the polygon vertices. You must call graphics.dispose() after you're done with all your polygon-drawing.

clear

public void clear()

Erases the image.

error

public double error()

Computes the sum squared error between the image and the original. This is defined as the sum, for all pixels, and for all three colors in the pixel, of the squared difference between the images with regard to that color on that pixel. Error goes from 0 to 1.

load

public void load(java.io.File file)

Loads the original and creates a new blank image to scribble on, and a new graphics object.

display

public void display(java.lang.String title)

For debugging only.

save

public void save(java.io.File file)

Saves the image (not the original) out to a PNG file so you can compare.

clone

public java.lang.Object clone()

Overrides:

clone in class java.lang.Object

copyImage

public java.awt.image.BufferedImage copyImage(java.awt.image.BufferedImage image)