Android Open Source - maze-android Wall

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License

The source code is released under:

GNU General Public License

Java Source Code

/*
 *  Maze-Android//from  www .  j  a v a2s .c  om
 *  Copyright 2009, 2010, 2011, 2012 Marco Mandrioli
 *
 *  This file is part of Maze-Android.
 *
 *  Maze-Android is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation; either version 3 of the License, or
 *  (at your option) any later version.
 *
 *  Maze-Android is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with Maze-Android.  If not, see <http://www.gnu.org/licenses/>.
 *
 */


package it.zavo.maze.maze;

import it.zavo.maze.graphics.shape.Rectangle;

/**
 * Represents a wall of the maze.
 * 
 * @author Marco Mandrioli
 * 
 * @see it.zavo.maze.shape.Rectangle
 */
public class Wall extends Rectangle {
  private float[] center;
  private float[] halfSize;

  /**
   * Constructs a wall of the default color at the given coordinates.
   * 
   * @param scale
   *            the size of the maze containing the ball.
   * @param left
   *            x coordinate of the left side.
   * @param right
   *            x coordinate of the right side.
   * @param top
   *            y coordinate of the top side.
   * @param bottom
   *            y coordinate of the bottom side.
   */
  public Wall(float scale, float left, float right, float top, float bottom) {
    // size is mapped to (-1, 1), so everything is multiplied by 2
    super(((left * 2) / scale) - 1, ((right * 2) / scale) - 1,
        ((top * 2) / scale) - 1, ((bottom * 2) / scale) - 1, 0.0f,
        0.0f, 0.0f, 1.0f);

    // gets values from the vertices to calculate the half width and height
    halfSize = new float[] { (vertices[6] - vertices[0]) / 2,
        (vertices[7] - vertices[1]) / 2 };

    // gets values from the vertices to calculate the center
    center = new float[] { vertices[0] + halfSize[0],
        vertices[1] + halfSize[1] };
  }

  /**
   * Gets the center coordinates of this wall.
   * 
   * @return an array of two floats (x, y).
   */
  public float[] getCenter() {
    return center.clone();
  }

  /**
   * Gets the half widht and half height of this wall.
   * 
   * @return an array of two floats (half width, half height).
   */
  public float[] getHalfSize() {
    return halfSize.clone();
  }
}

Java Source Code List

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