jahuwaldt.j3d.image

Class PNGImageObserver

java.lang.Object

jahuwaldt.j3d.image.PNGImageObserver

All Implemented Interfaces:

CapturedImageObserver

public class PNGImageObserver
extends java.lang.Object
implements CapturedImageObserver

An image observer that turns the image into a PNG image.

If the filename already exists, it will automatically overwrite the existing image. If the filename contains non-existent intermediate directories, these will be automatically created.

Modified by: Joseph A.Huwaldt

Version:

February 17, 2014

Author:

Joseph A. Huwaldt Date: April 16, 2009

Constructor Summary

Constructors

Constructor and Description
PNGImageObserver() Construct a default observer with no filename set and it has not yet captured an image.

Method Summary

Modifier and Type	Method and Description
void	canvasImageCaptured(java.awt.image.BufferedImage img) Notification that an image has been captured from the canvas and is ready for processing.
boolean	captureNextFrame() Returns a flag indicating if the next frame should be captured or not.
void	setCaptureNextFrame() Tell the observer to capture the next frame it is told about.
void	setFilename(java.lang.String name) Set the filename that this will write to.

Methods inherited from class java.lang.Object

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

Constructor Detail

PNGImageObserver

public PNGImageObserver()

Construct a default observer with no filename set and it has not yet captured an image.

Method Detail

setCaptureNextFrame

public void setCaptureNextFrame()

Tell the observer to capture the next frame it is told about.

captureNextFrame

public boolean captureNextFrame()

Returns a flag indicating if the next frame should be captured or not.

Specified by:

captureNextFrame in interface CapturedImageObserver

Returns:

true if the observer should be passed an image for the next frame and false if it should not.

setFilename

public void setFilename(java.lang.String name)
                 throws java.lang.IllegalStateException

Set the filename that this will write to. If the filename is null, this will remove the previously set name. It can only be set if the image has not yet been captured.

Parameters:

name - The name of the file to write to.

Throws:

java.lang.IllegalStateException

canvasImageCaptured

public void canvasImageCaptured(java.awt.image.BufferedImage img)

Notification that an image has been captured from the canvas and is ready for processing. If the filename has not been set then this will throw an exception.

Specified by:

canvasImageCaptured in interface CapturedImageObserver

Parameters:

img - The image that was captured

Throws:

java.lang.IllegalStateException - The filename has not been set