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

   1 /*
   2  * Sixth 3D engine. Author: Svjatoslav Agejenko.
   3  * This project is released under Creative Commons Zero (CC0) license.
   4  *
   5 *
   6  */
   7
   8 package eu.svjatoslav.sixth.e3d.renderer.raster;
   9
  10 import eu.svjatoslav.sixth.e3d.gui.RenderingContext;
  11 import eu.svjatoslav.sixth.e3d.renderer.raster.shapes.AbstractCoordinateShape;
  12
  13 import java.io.Serializable;
  14 import java.util.ArrayList;
  15 import java.util.Comparator;
  16
  17 public class RenderAggregator {
  18
  19     private ArrayList<AbstractCoordinateShape> shapes = new ArrayList<>();
  20     private ShapesZIndexComparator comparator = new ShapesZIndexComparator();
  21
  22     public void paint(final RenderingContext renderBuffer) {
  23         shapes.sort(comparator);
  24         shapes.forEach(shape -> shape.paint(renderBuffer));
  25     }
  26
  27     public void queueShapeForRendering(final AbstractCoordinateShape shape) {
  28         shapes.add(shape);
  29     }
  30
  31     public void reset() {
  32         shapes.clear();
  33     }
  34
  35     static class ShapesZIndexComparator implements Comparator<AbstractCoordinateShape>, Serializable {
  36
  37         @Override
  38         public int compare(final AbstractCoordinateShape o1, final AbstractCoordinateShape o2) {
  39             if (o1.getZ() < o2.getZ())
  40                 return 1;
  41             else if (o1.getZ() > o2.getZ())
  42                 return -1;
  43
  44             return Integer.compare(o1.shapeId, o2.shapeId);
  45         }
  46     }
  47 }