src/main/java/eu/svjatoslav/sixth/e3d/renderer/raster/shapes/AbstractCoordinateShape.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.shapes;
   6
   7 import eu.svjatoslav.sixth.e3d.gui.RenderingContext;
   8 import eu.svjatoslav.sixth.e3d.math.TransformsStack;
   9 import eu.svjatoslav.sixth.e3d.math.Vertex;
  10 import eu.svjatoslav.sixth.e3d.renderer.raster.RenderAggregator;
  11
  12 import java.util.concurrent.atomic.AtomicInteger;
  13
  14 public abstract class AbstractCoordinateShape extends AbstractShape {
  15
  16     private static final AtomicInteger lastShapeId = new AtomicInteger();
  17     public final int shapeId;
  18     public final Vertex[] coordinates;
  19     public double onScreenZ;
  20
  21     public AbstractCoordinateShape(final int pointsCount) {
  22         coordinates = new Vertex[pointsCount];
  23         for (int i = 0; i < pointsCount; i++)
  24             coordinates[i] = new Vertex();
  25
  26         shapeId = lastShapeId.getAndIncrement();
  27     }
  28
  29     public AbstractCoordinateShape(final Vertex... vertexes) {
  30         coordinates = vertexes;
  31
  32         shapeId = lastShapeId.getAndIncrement();
  33     }
  34
  35     public double getZ() {
  36         return onScreenZ;
  37     }
  38
  39     public abstract void paint(RenderingContext renderBuffer);
  40
  41     @Override
  42     public void transform(final TransformsStack transforms,
  43                           final RenderAggregator aggregator,
  44                           final RenderingContext renderingContext) {
  45
  46         double accumulatedZ = 0;
  47         boolean paint = true;
  48
  49         for (final Vertex geometryPoint : coordinates) {
  50             geometryPoint.calculateLocationRelativeToViewer(transforms, renderingContext);
  51
  52             accumulatedZ += geometryPoint.transformedCoordinate.z;
  53
  54             if (!geometryPoint.transformedCoordinate.isVisible())
  55                 paint = false;
  56         }
  57
  58         if (paint) {
  59             onScreenZ = accumulatedZ / coordinates.length;
  60             aggregator.queueShapeForRendering(this);
  61         }
  62     }
  63
  64 }