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 *
   6  */
   7
   8 package eu.svjatoslav.sixth.e3d.renderer.raster.shapes;
   9
  10 import eu.svjatoslav.sixth.e3d.geometry.Point3D;
  11 import eu.svjatoslav.sixth.e3d.gui.RenderingContext;
  12 import eu.svjatoslav.sixth.e3d.math.GeometryCoordinate;
  13 import eu.svjatoslav.sixth.e3d.math.TransformPipe;
  14 import eu.svjatoslav.sixth.e3d.renderer.raster.RenderAggregator;
  15
  16 import java.util.concurrent.atomic.AtomicInteger;
  17
  18 public abstract class AbstractCoordinateShape extends AbstractShape {
  19
  20     private static final AtomicInteger lastShapeId = new AtomicInteger();
  21     public final int shapeId;
  22     public final GeometryCoordinate[] coordinates;
  23     public double onScreenZ;
  24
  25     public AbstractCoordinateShape(final int pointsCount) {
  26         coordinates = new GeometryCoordinate[pointsCount];
  27         for (int i = 0; i < pointsCount; i++)
  28             coordinates[i] = new GeometryCoordinate();
  29
  30         shapeId = lastShapeId.getAndIncrement();
  31     }
  32
  33     public AbstractCoordinateShape(final Point3D... vertexes) {
  34         coordinates = new GeometryCoordinate[vertexes.length];
  35
  36         for (int i = 0; i < vertexes.length; i++)
  37             coordinates[i] = new GeometryCoordinate(vertexes[i]);
  38
  39         shapeId = lastShapeId.getAndIncrement();
  40     }
  41
  42     public double getZ() {
  43         return onScreenZ;
  44     }
  45
  46     public abstract void paint(RenderingContext renderBuffer);
  47
  48     @Override
  49     public void transform(final TransformPipe transforms,
  50                           final RenderAggregator aggregator,
  51                           final RenderingContext renderingContext) {
  52
  53         double accumulatedZ = 0;
  54         boolean paint = true;
  55
  56         for (final GeometryCoordinate geometryPoint : coordinates) {
  57             geometryPoint.transform(transforms, renderingContext);
  58
  59             accumulatedZ += geometryPoint.transformedCoordinate.z;
  60
  61             if (!geometryPoint.transformedCoordinate.isVisible())
  62                 paint = false;
  63         }
  64
  65         if (paint) {
  66             onScreenZ = accumulatedZ / coordinates.length;
  67             aggregator.queueShapeForRendering(this);
  68         }
  69     }
  70
  71 }