/*
 * $RCSfile$
 *
 * Copyright (c) 2007 Sun Microsystems, Inc. All rights reserved.
 *
 * Use is subject to license terms.
 *
 * $Revision$
 * $Date$
 * $State$
 */

package javax.vecmath;

import java.lang.Math;

/**
 * A 3 element point that is represented by double precision floating point 
 * x,y,z coordinates.
 *
 */
public class Point3d extends Tuple3d implements java.io.Serializable {

    // Compatible with 1.1
    static final long serialVersionUID = 5718062286069042927L;

    /**
     * Constructs and initializes a Point3d from the specified xyz coordinates.
     * @param x the x coordinate
     * @param y the y coordinate
     * @param z the z coordinate
     */
    public Point3d(double x, double y, double z)
    {
        super(x,y,z);
    }


    /**
     * Constructs and initializes a Point3d from the array of length 3.
     * @param p the array of length 3 containing xyz in order
     */
    public Point3d(double[] p)
    {
       super(p);
    }


    /**
     * Constructs and initializes a Point3d from the specified Point3d.
     * @param p1 the Point3d containing the initialization x y z data
     */
    public Point3d(Point3d p1)
    {
         super(p1);
    }


    /**
     * Constructs and initializes a Point3d from the specified Point3f.
     * @param p1 the Point3f containing the initialization x y z data
     */
    public Point3d(Point3f p1)
    {
       super(p1);
    }


    /** 
     * Constructs and initializes a Point3d from the specified Tuple3f. 
     * @param t1 the Tuple3f containing the initialization x y z data 
     */  
    public Point3d(Tuple3f t1)  
    { 
       super(t1); 
    }
 
 
    /** 
     * Constructs and initializes a Point3d from the specified Tuple3d.  
     * @param t1 the Tuple3d containing the initialization x y z data 
     */  
    public Point3d(Tuple3d t1)
    {
       super(t1);
    }


    /**
     * Constructs and initializes a Point3d to (0,0,0).
     */
    public Point3d()
    {
       super();
    }


  /**
   * Returns the square of the distance between this point and point p1.
   * @param p1 the other point 
   * @return the square of the distance
   */
  public final double distanceSquared(Point3d p1)
    {
      double dx, dy, dz;

      dx = this.x-p1.x;
      dy = this.y-p1.y;
      dz = this.z-p1.z;
      return (dx*dx+dy*dy+dz*dz);
    }


  /**
   * Returns the distance between this point and point p1.
   * @param p1 the other point
   * @return the distance 
   */
  public final double distance(Point3d p1)
    {
      double dx, dy, dz;

      dx = this.x-p1.x;
      dy = this.y-p1.y;
      dz = this.z-p1.z;
      return Math.sqrt(dx*dx+dy*dy+dz*dz);
    }


    /**
     * Computes the L-1 (Manhattan) distance between this point and
     * point p1.  The L-1 distance is equal to:
     *  abs(x1-x2) + abs(y1-y2) + abs(z1-z2).
     * @param p1 the other point
     * @return  the L-1 distance
     */
    public final double distanceL1(Point3d p1) {
	return Math.abs(this.x-p1.x) + Math.abs(this.y-p1.y) +
	    Math.abs(this.z-p1.z);
    }


    /**
     * Computes the L-infinite distance between this point and
     * point p1.  The L-infinite distance is equal to
     * MAX[abs(x1-x2), abs(y1-y2), abs(z1-z2)].
     * @param p1 the other point
     * @return  the L-infinite distance
     */
    public final double distanceLinf(Point3d p1) {
	double tmp;
	tmp = Math.max( Math.abs(this.x-p1.x), Math.abs(this.y-p1.y));

	return Math.max(tmp,Math.abs(this.z-p1.z));
    }


  /**
    *  Multiplies each of the x,y,z components of the Point4d parameter 
    *  by 1/w and places the projected values into this point. 
    *  @param  p1  the source Point4d, which is not modified 
    */   
   public final void project(Point4d p1)
   { 
     double oneOw;

     oneOw = 1/p1.w;
     x = p1.x*oneOw;
     y = p1.y*oneOw;
     z = p1.z*oneOw;

   } 


}