/*
 * The MIT License
 * Copyright © 2014-2019 Ilkka Seppälä
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 */

package com.iluwatar.doublebuffer;

import java.util.Arrays;

/**
 * FrameBuffer implementation class.
 */
public class FrameBuffer implements Buffer {

  public static final int WIDTH = 10;
  public static final int HEIGHT = 8;

  private final Pixel[] pixels = new Pixel[WIDTH * HEIGHT];

  public FrameBuffer() {
    clearAll();
  }

  @Override
  public void clear(int x, int y) {
    pixels[getIndex(x, y)] = Pixel.WHITE;
  }

  @Override
  public void draw(int x, int y) {
    pixels[getIndex(x, y)] = Pixel.BLACK;
  }

  @Override
  public void clearAll() {
    Arrays.fill(pixels, Pixel.WHITE);
  }

  @Override
  public Pixel[] getPixels() {
    return pixels;
  }

  private int getIndex(int x, int y) {
    return x + WIDTH * y;
  }
}
