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 package eu.svjatoslav.sixth.e3d.renderer.raster;
   6
   7 import eu.svjatoslav.sixth.e3d.gui.RenderingContext;
   8 import eu.svjatoslav.sixth.e3d.renderer.raster.shapes.AbstractCoordinateShape;
   9
  10 import java.io.Serializable;
  11 import java.util.ArrayList;
  12 import java.util.Comparator;
  13
  14 public class RenderAggregator {
  15
  16     private ArrayList<AbstractCoordinateShape> shapes = new ArrayList<>();
  17     private ShapesZIndexComparator comparator = new ShapesZIndexComparator();
  18
  19     public void paint(final RenderingContext renderBuffer) {
  20         shapes.sort(comparator);
  21         shapes.forEach(shape -> shape.paint(renderBuffer));
  22     }
  23
  24     public void queueShapeForRendering(final AbstractCoordinateShape shape) {
  25         shapes.add(shape);
  26     }
  27
  28     public void reset() {
  29         shapes.clear();
  30     }
  31
  32     static class ShapesZIndexComparator implements Comparator<AbstractCoordinateShape>, Serializable {
  33
  34         @Override
  35         public int compare(final AbstractCoordinateShape o1, final AbstractCoordinateShape o2) {
  36             if (o1.getZ() < o2.getZ())
  37                 return 1;
  38             else if (o1.getZ() > o2.getZ())
  39                 return -1;
  40
  41             return Integer.compare(o1.shapeId, o2.shapeId);
  42         }
  43     }
  44 }