MemoryGray8Image.java :  » Graphic-Library » LaTeXDraw-2.0.8 » net » sourceforge » jiu » data » Java Open Source

/*
 * MemoryGray8Image
 *
 * Copyright (c) 2002 Marco Schmidt.
 * All rights reserved.
 */

package net.sourceforge.jiu.data;

import net.sourceforge.jiu.data.Gray8Image;
import net.sourceforge.jiu.data.MemoryByteChannelImage;
import net.sourceforge.jiu.data.PixelImage;

/**
 * An implementation of {@link Gray8Image} that keeps the complete image in memory.
 * This class inherits most of its functionality from its parent class
 * {@link MemoryByteChannelImage}, using one byte channel.
 *
 * @author Marco Schmidt
 */
public class MemoryGray8Image extends MemoryByteChannelImage implements Gray8Image
{
  /**
   * Creates a new MemoryGray8Image object with the specified resolution.
   * Simply gives <code>1</code> (for one channel) and the two resolution arguments
   * to the super constructor (of the parent class {@link MemoryByteChannelImage}).
   * @param width the horizontal resolution, must be non-zero and positive
   * @param height the vertical resolution, must be non-zero and positive
   */
  public MemoryGray8Image(int width, int height)
  {
    super(1, width, height);
  }

  public PixelImage createCompatibleImage(int width, int height)
  {
    return new MemoryGray8Image(width, height);
  }

  public Class getImageType()
  {
    return Gray8Image.class;
  }

  public boolean isBlack(int x, int y)
  {
    return getByteSample(x, y) == 0;
  }

  public boolean isWhite(int x, int y)
  {
    return getByteSample(x, y) == (byte)255;
  }

  public void putBlack(int x, int y)
  {
    putSample(x, y, 0);
  }

  public void putWhite(int x, int y)
  {
    putSample(x, y, 255);
  }
}