Shape.java

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/* This page is part of the Game of Life source code */

/**
 * Copyright 1996-2004 Edwin Martin <edwin@bitstorm.nl>
 * @author Edwin Martin
 */

package org.bitstorm.gameoflife;

import java.awt.Dimension;
import java.util.Enumeration;

/**
 * Shape contains data of one (predefined) shape.
 *
 * @author Edwin Martin
 */
public class Shape {
  private final String name;
  private final int[][] shape;
  
  /**
   * Constructa a Shape.
   * @param name name of shape
   * @param shape shape data
   */
  public Shape( String name, int[][] shape ) {
    this.name = name;
    this.shape = shape;
  }
  
  /**
   * Get dimension of shape.
   * @return dimension of the shape in cells
   */
  public Dimension getDimension() {
    int shapeWidth = 0;
    int shapeHeight = 0;
    for (int cell = 0; cell < shape.length; cell++) {
      if (shape[cell][0] > shapeWidth)
        shapeWidth = shape[cell][0];
      if (shape[cell][1] > shapeHeight)
        shapeHeight = shape[cell][1];
    }
    shapeWidth++;
    shapeHeight++;
    return new Dimension( shapeWidth, shapeHeight );
  }
  
  /**
   * Get name of shape.
   * @return name of shape
   */
  public String getName() {
    return name;
  }
  
  /**
   * Get shape data.
   * Hide the shape implementation. Returns a anonymous Enumerator object.
   * @return enumerated shape data
   */
  public Enumeration getCells() {
    return new Enumeration() {
      private int index=0;
      public boolean hasMoreElements() {
        return index < shape.length;
      }
      public Object nextElement() {
        return shape[index++];
      }
    };
  }
  
  /**
   * @see java.lang.Object#toString()
   */
  public String toString() {
    return name+" ("+shape.length+" cell"+(shape.length==1?"":"s")+")";
  }
}