gov/nasa/worldwind/geom/Intersection.java

   1 /*
   2 Copyright (C) 2001, 2006 United States Government
   3 as represented by the Administrator of the
   4 National Aeronautics and Space Administration.
   5 All Rights Reserved.
   6 */
   7 package gov.nasa.worldwind.geom;
   8
   9 import gov.nasa.worldwind.util.Logging;
  10
  11 /**
  12  * @author Tom Gaskins
  13  * @version $Id: Intersection.java 2471 2007-07-31 21:50:57Z tgaskins $
  14  */
  15 public final class Intersection // Instances are immutable
  16 {
  17
  18     private final Vec4 intersectionPoint;
  19     private final boolean isTangent;
  20
  21     /**
  22      * @param intersectionPoint
  23      * @param isTangent
  24      * @throws IllegalArgumentException if <code>intersectionpoint</code> is null
  25      */
  26     public Intersection(Vec4 intersectionPoint, boolean isTangent)
  27     {
  28         if (intersectionPoint == null)
  29         {
  30             String message = Logging.getMessage("nullValue.IntersectionPointIsNull");
  31             Logging.logger().severe(message);
  32             throw new IllegalArgumentException(message);
  33         }
  34         this.intersectionPoint = intersectionPoint;
  35         this.isTangent = isTangent;
  36     }
  37
  38     public final Vec4 getIntersectionPoint()
  39     {
  40         return intersectionPoint;
  41     }
  42
  43     public final boolean isTangent()
  44     {
  45         return isTangent;
  46     }
  47
  48     @Override
  49     public boolean equals(Object o)
  50     {
  51         if (this == o)
  52             return true;
  53         if (o == null || getClass() != o.getClass())
  54             return false;
  55
  56         final gov.nasa.worldwind.geom.Intersection that = (gov.nasa.worldwind.geom.Intersection) o;
  57
  58         if (isTangent != that.isTangent)
  59             return false;
  60         //noinspection RedundantIfStatement
  61         if (!intersectionPoint.equals(that.intersectionPoint))
  62             return false;
  63
  64         return true;
  65     }
  66
  67     @Override
  68     public int hashCode()
  69     {
  70         int result;
  71         result = intersectionPoint.hashCode();
  72         result = 29 * result + (isTangent ? 1 : 0);
  73         return result;
  74     }
  75
  76     @Override
  77     public String toString()
  78     {
  79         String pt = "Intersection Point: " + this.intersectionPoint;
  80         String tang = this.isTangent ? " is a tangent." : " not a tangent";
  81         return pt + tang;
  82     }
  83 }