src/main/java/eu/svjatoslav/sixth/e3d/renderer/raster/slicer/BorderLine.java

   1 /*
   2  * Sixth 3D engine. Copyright ©2012-2020, Svjatoslav Agejenko, svjatoslav@svjatoslav.eu
   3  *
   4  * This program is free software; you can redistribute it and/or
   5  * modify it under the terms of version 3 of the GNU Lesser General Public License
   6  * or later as published by the Free Software Foundation.
   7  *
   8  */
   9
  10 package eu.svjatoslav.sixth.e3d.renderer.raster.slicer;
  11
  12 import eu.svjatoslav.sixth.e3d.geometry.Point2D;
  13 import eu.svjatoslav.sixth.e3d.geometry.Point3D;
  14
  15 import java.util.Comparator;
  16
  17 public class BorderLine implements Comparator<BorderLine> {
  18
  19     public final int count;
  20     final PolygonCoordinate c1;
  21     final PolygonCoordinate c2;
  22
  23     public BorderLine(final PolygonCoordinate c1, final PolygonCoordinate c2,
  24                       final int count) {
  25         this.c1 = c1;
  26         this.c2 = c2;
  27         this.count = count;
  28     }
  29
  30     @Override
  31     public int compare(final BorderLine o1, final BorderLine o2) {
  32         return Double.compare(o1.getLength(), o2.getLength());
  33     }
  34
  35     public double getLength() {
  36         return c1.space.getDistanceTo(c2.space);
  37     }
  38
  39     public PolygonCoordinate getMiddlePoint() {
  40         return new PolygonCoordinate(new Point3D().computeMiddlePoint(c1.space,
  41                 c2.space), new Point2D().getMiddle(c1.texture,
  42                 c2.texture));
  43     }
  44 }