package cz.cuni.amis.pogamut.ut2004.storyworld.perception;
   
   import javax.vecmath.Point3d;
   
   import cz.cuni.amis.pogamut.base3d.worldview.object.Location;
   
   
   public class SPLocation {
   	
  	private double x;
  	
  	private double y;
  	
  	private double z;
  	
  	private Object point3DMutex = new Object();
  	
  	private Point3d point3D = null;
  
  	private Object locationMutex = new Object();
  
  	private Location location = null;
  	
  	public SPLocation() {
  		this(0,0,0);
  	}
  
  	public SPLocation(double x, double y, double z) {
  		this.x = x;
  		this.y = y;
  		this.z = z;
  	}
  	
  	public SPLocation(Location location) {
  		this(location.x, location.y, location.z);
  	}
  	
  	/**
  	 * Used by XStream after deserialization.
  	 * @return
  	 */
  	private SPLocation readResolve() {
  		point3DMutex = new Object();
  		return this;
  	}
  	
  	public boolean equals(Object obj) {
  		if (obj == null) return false;
  		if (!(obj instanceof SPLocation)) return false;
  		SPLocation location = (SPLocation) obj;
  		return asPoint3d().epsilonEquals(location.asPoint3d(), 1);
  	}
  	
  	public Point3d asPoint3d() {
  		synchronized(point3DMutex) {
  			if (point3D != null) return point3D;
  			point3D = new Point3d(x, y, z);
  			return point3D;				
  		}
  	}
  	
  	public Location asLocation() {
  		synchronized(locationMutex ) {
  			if (location != null) return location;
  			location = new Location(x, y, z);
  			return location;				
  		}
  	}
  
  	
  	public double getX() {
  		return x;
  	}
  
  	public void setX(double x) {
  		this.x = x;
  	}
  
  	public double getY() {
  		return y;
  	}
  
  	public void setY(double y) {
  		this.y = y;
  	}
  
  	public double getZ() {
  		return z;		
  	}
  
  	public void setZ(double z) {
  		this.z = z;
  	}
  	
  	public double distance(SPLocation location) {
  		return asPoint3d().distance(location.asPoint3d());
  	}
  	
  	public String toString() {
 		return "SPLocation[" + x + ", " + y + ", " + z + "]";
 	}
 	
 }