Source for gnu.java.awt.java2d.PolyEdgeComparator

   1: /* PolyEdgeComparator.java -- Sorts PolyEdges by their current intersection
   2:                               points
   3:    Copyright (C) 2006 Free Software Foundation, Inc.
   4: 
   5: This file is part of GNU Classpath.
   6: 
   7: GNU Classpath is free software; you can redistribute it and/or modify
   8: it under the terms of the GNU General Public License as published by
   9: the Free Software Foundation; either version 2, or (at your option)
  10: any later version.
  11: 
  12: GNU Classpath is distributed in the hope that it will be useful, but
  13: WITHOUT ANY WARRANTY; without even the implied warranty of
  14: MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15: General Public License for more details.
  16: 
  17: You should have received a copy of the GNU General Public License
  18: along with GNU Classpath; see the file COPYING.  If not, write to the
  19: Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
  20: 02110-1301 USA.
  21: 
  22: Linking this library statically or dynamically with other modules is
  23: making a combined work based on this library.  Thus, the terms and
  24: conditions of the GNU General Public License cover the whole
  25: combination.
  26: 
  27: As a special exception, the copyright holders of this library give you
  28: permission to link this library with independent modules to produce an
  29: executable, regardless of the license terms of these independent
  30: modules, and to copy and distribute the resulting executable under
  31: terms of your choice, provided that you also meet, for each linked
  32: independent module, the terms and conditions of the license of that
  33: module.  An independent module is a module which is not derived from
  34: or based on this library.  If you modify this library, you may extend
  35: this exception to your version of the library, but you are not
  36: obligated to do so.  If you do not wish to do so, delete this
  37: exception statement from your version. */
  38: 
  39: 
  40: package gnu.java.awt.java2d;
  41: 
  42: import java.util.Comparator;
  43: 
  44: /**
  45:  * Sorts {@link PolyEdge}s by their current intersection points.
  46:  *
  47:  * @author Roman Kennke (kennke@aicas.com)
  48:  */
  49: public class PolyEdgeComparator
  50:     implements Comparator
  51: {
  52: 
  53:   /**
  54:    * The current scanline.
  55:    */
  56:   int y;
  57: 
  58:   public int compare(Object o1, Object o2)
  59:   {
  60:     PolyEdge edge1 = (PolyEdge) o1;
  61:     PolyEdge edge2 = (PolyEdge) o2;
  62:     int comp = 0;
  63:     if (edge1.xIntersection < edge2.xIntersection)
  64:       comp = -1;
  65:     else if (edge1.xIntersection > edge2.xIntersection)
  66:       comp = 1;
  67:     return comp;
  68:   }
  69: 
  70: }