Package jahuwaldt.j3d.image

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

    • Method Summary

      All Methods Instance Methods Concrete Methods 
      Modifier and Type Method 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