src/main/java/eu/svjatoslav/sixth/e3d/renderer/raster/RenderAggregator.java

   1 /*
   2  * Sixth 3D engine. Copyright ©2012-2019, 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;
  11
  12 import eu.svjatoslav.sixth.e3d.gui.RenderingContext;
  13 import eu.svjatoslav.sixth.e3d.renderer.raster.shapes.AbstractCoordinateShape;
  14
  15 import java.io.Serializable;
  16 import java.util.ArrayList;
  17 import java.util.Comparator;
  18
  19 public class RenderAggregator {
  20
  21     private ArrayList<AbstractCoordinateShape> shapes = new ArrayList<>();
  22     private ShapesZIndexComparator comparator = new ShapesZIndexComparator();
  23
  24     public void paint(final RenderingContext renderBuffer) {
  25         shapes.sort(comparator);
  26         shapes.forEach(shape -> shape.paint(renderBuffer));
  27     }
  28
  29     public void queueShapeForRendering(final AbstractCoordinateShape shape) {
  30         shapes.add(shape);
  31     }
  32
  33     public void reset() {
  34         shapes.clear();
  35     }
  36
  37     static class ShapesZIndexComparator implements Comparator<AbstractCoordinateShape>, Serializable {
  38
  39         @Override
  40         public int compare(final AbstractCoordinateShape o1, final AbstractCoordinateShape o2) {
  41             if (o1.getZ() < o2.getZ())
  42                 return 1;
  43             else if (o1.getZ() > o2.getZ())
  44                 return -1;
  45
  46             return Integer.compare(o1.shapeId, o2.shapeId);
  47         }
  48     }
  49 }