Class Java2DExamples

java.lang.Object

net.jrodolfo.java_evolution.java02.java2d.Java2DExamples

public class Java2DExamples
extends Object

Demonstrates Java 2D rendering to an in-memory image.

Constructor Summary

Constructors

Constructor	Description
Java2DExamples()

Method Summary

Modifier and Type	Method	Description
BufferedImage	blankImage(int width, int height)	Creates a blank image that can be drawn without opening a GUI window.
BufferedImage	drawFilledRectangle()	Draws a filled rectangle into an in-memory image.
BufferedImage	drawOutlinedEllipse()	Draws an outlined ellipse using Java 2D shape and stroke APIs.
Color	pixelColor(BufferedImage image, int x, int y)	Reads the color written to a pixel.

Methods inherited from class Object

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

Constructor Details

Java2DExamples

public Java2DExamples()

Method Details

blankImage

public BufferedImage blankImage(int width,
 int height)

Creates a blank image that can be drawn without opening a GUI window.

Parameters:

width - image width

height - image height

Returns:

blank image

drawFilledRectangle

public BufferedImage drawFilledRectangle()

Draws a filled rectangle into an in-memory image.

Returns:

image with a red rectangle

drawOutlinedEllipse

public BufferedImage drawOutlinedEllipse()

Draws an outlined ellipse using Java 2D shape and stroke APIs.

Returns:

image with a blue ellipse outline

pixelColor

public Color pixelColor(BufferedImage image,
 int x,
 int y)

Reads the color written to a pixel.

Parameters:

image - image to inspect

x - x coordinate

y - y coordinate

Returns:

pixel color including alpha