Vector2f.java

package com.jme.math;
/*
 * Copyright (c) 2003-2008 jMonkeyEngine
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are
 * met:
 *
 * * Redistributions of source code must retain the above copyright
 *   notice, this list of conditions and the following disclaimer.
 *
 * * Redistributions in binary form must reproduce the above copyright
 *   notice, this list of conditions and the following disclaimer in the
 *   documentation and/or other materials provided with the distribution.
 *
 * * Neither the name of 'jMonkeyEngine' nor the names of its contributors 
 *   may be used to endorse or promote products derived from this software 
 *   without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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 */

import java.io.Externalizable;
import java.io.IOException;
import java.io.ObjectInput;
import java.io.ObjectOutput;

/**
 * <code>Vector2f</code> defines a Vector for a two float value vector.
 * 
 * @author Mark Powell
 * @author Joshua Slack
 */
public class Vector2f<region R> implements Externalizable {
    private static final long serialVersionUID = 1L;
    /**
     * the x value of the vector.
     */
    public float x in R;
    /**
     * the y value of the vector.
     */
    public float y in R;

    /**
     * Creates a Vector2f with x and y set to 0. Equivalent to Vector2f(0,0).
     */
    public Vector2f() /*writes R*/ {
        x = y = 0;
    }
    
    /**
     * Used with serialization. Not to be called manually.
     * 
     * @param in
     *            ObjectInput
     * @throws IOException
     * @throws ClassNotFoundException
     * @see java.io.Externalizable
     */
    public void readExternal(ObjectInput in) throws IOException,
            ClassNotFoundException {
        x = in.readFloat();
        y = in.readFloat();
    }

    /**
     * Used with serialization. Not to be called manually.
     * 
     * @param out
     *            ObjectOutput
     * @throws IOException
     * @see java.io.Externalizable
     */
    public void writeExternal(ObjectOutput out) throws IOException {
        out.writeFloat(x);
        out.writeFloat(y);
    }
}