src/main/java/eu/svjatoslav/sixth/e3d/examples/RainingNumbersDemo.java

   1 /*
   2  * Sixth 3D engine demos. Copyright ©2012-2018, 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 package eu.svjatoslav.sixth.e3d.examples;
  10
  11 import eu.svjatoslav.sixth.e3d.geometry.Point3D;
  12 import eu.svjatoslav.sixth.e3d.gui.ViewFrame;
  13 import eu.svjatoslav.sixth.e3d.gui.ViewPanel;
  14 import eu.svjatoslav.sixth.e3d.gui.ViewRenderListener;
  15 import eu.svjatoslav.sixth.e3d.math.Transform;
  16 import eu.svjatoslav.sixth.e3d.renderer.raster.Color;
  17 import eu.svjatoslav.sixth.e3d.renderer.raster.ShapeCollection;
  18 import eu.svjatoslav.sixth.e3d.renderer.raster.shapes.AbstractShape;
  19 import eu.svjatoslav.sixth.e3d.renderer.raster.shapes.composite.textcanvas.TextCanvas;
  20
  21 import java.util.Collection;
  22 import java.util.Random;
  23
  24 public class RainingNumbersDemo implements ViewRenderListener {
  25
  26     private static final int NUMBERS_COUNT = 1000;
  27     private final static int AREA = 600;
  28     private final static int AREA_HALF = AREA / 2;
  29
  30     public static void main(final String[] args) {
  31         new RainingNumbersDemo().run();
  32     }
  33
  34     @Override
  35     public boolean beforeRender(final ViewPanel viewPanel,
  36                                 final int millisecondsSinceLastFrame) {
  37
  38         final Collection<AbstractShape> shapes = viewPanel
  39                 .getRootShapeCollection().getShapes();
  40
  41         final double translateAmount = millisecondsSinceLastFrame / 50d;
  42
  43         shapes.stream().filter(shape -> shape instanceof TextCanvas).forEach(shape -> {
  44             final TextCanvas block = (TextCanvas) shape;
  45             final Point3D location = block.getLocation();
  46             location.translateY(translateAmount);
  47
  48             if (location.y > AREA_HALF)
  49                 location.y -= AREA;
  50         });
  51
  52         return true;
  53     }
  54
  55     private void run() {
  56         final ViewFrame viewFrame = new ViewFrame();
  57
  58         final ShapeCollection geometryCollection = viewFrame.getViewPanel()
  59                 .getRootShapeCollection();
  60
  61         Random random = new Random();
  62
  63         for (int i = 0; i < NUMBERS_COUNT; i++) {
  64             final Point3D location = new Point3D((Math.random() * AREA)
  65                     - AREA_HALF, (Math.random() * AREA) - AREA_HALF,
  66                     (Math.random() * AREA) - AREA_HALF);
  67
  68             final Color color = new Color(Math.random(), Math.random(),
  69                     Math.random(), Math.random());
  70
  71             final TextCanvas textCanvas = new TextCanvas(
  72                     new Transform(location), String.valueOf(random.nextInt(10)), color,
  73                     Color.TRANSPARENT);
  74
  75             geometryCollection.addShape(textCanvas);
  76         }
  77
  78         viewFrame.getViewPanel().addViewUpdateListener(this);
  79     }
  80 }