src/main/java/eu/svjatoslav/sixth/e3d/renderer/raster/shapes/AbstractCoordinateShape.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.shapes;
  11
  12 import eu.svjatoslav.sixth.e3d.geometry.Point3D;
  13 import eu.svjatoslav.sixth.e3d.gui.RenderingContext;
  14 import eu.svjatoslav.sixth.e3d.math.GeometryCoordinate;
  15 import eu.svjatoslav.sixth.e3d.math.TransformPipe;
  16 import eu.svjatoslav.sixth.e3d.renderer.raster.RenderAggregator;
  17
  18 import java.util.concurrent.atomic.AtomicInteger;
  19
  20 public abstract class AbstractCoordinateShape extends AbstractShape {
  21
  22     public static final AtomicInteger lastShapeId = new AtomicInteger();
  23     public final int shapeId;
  24     public final GeometryCoordinate[] coordinates;
  25     public double onScreenZ;
  26
  27     public AbstractCoordinateShape(final int pointsCount) {
  28         coordinates = new GeometryCoordinate[pointsCount];
  29         for (int i = 0; i < pointsCount; i++)
  30             coordinates[i] = new GeometryCoordinate();
  31
  32         shapeId = lastShapeId.getAndIncrement();
  33     }
  34
  35     public AbstractCoordinateShape(final Point3D... locationPoints) {
  36         coordinates = new GeometryCoordinate[locationPoints.length];
  37
  38         for (int i = 0; i < locationPoints.length; i++)
  39             coordinates[i] = new GeometryCoordinate(locationPoints[i]);
  40
  41         shapeId = lastShapeId.getAndIncrement();
  42     }
  43
  44     public double getZ() {
  45         return onScreenZ;
  46     }
  47
  48     public abstract void paint(RenderingContext renderBuffer);
  49
  50     @Override
  51     public void transform(final TransformPipe transforms,
  52                           final RenderAggregator aggregator,
  53                           final RenderingContext renderingContext) {
  54
  55         double accumulatedZ = 0;
  56         boolean paint = true;
  57
  58         for (final GeometryCoordinate geometryPoint : coordinates) {
  59             geometryPoint.transform(transforms, renderingContext);
  60
  61             accumulatedZ += geometryPoint.transformedCoordinate.z;
  62
  63             if (!geometryPoint.transformedCoordinate.isVisible())
  64                 paint = false;
  65         }
  66
  67         if (paint) {
  68             onScreenZ = accumulatedZ / coordinates.length;
  69             aggregator.queueShapeForRendering(this);
  70         }
  71     }
  72
  73 }