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

   1 /*
   2  * Sixth 3D engine demos. Copyright ©2012-2016, 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.geometry.Transform;
  13 import eu.svjatoslav.sixth.e3d.gui.ViewContext;
  14 import eu.svjatoslav.sixth.e3d.gui.ViewFrame;
  15 import eu.svjatoslav.sixth.e3d.gui.ViewUpdateListener;
  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.io.IOException;
  22 import java.util.Collection;
  23 import java.util.Random;
  24
  25 public class RainingNumbersDemo implements ViewUpdateListener {
  26
  27     private static final int NUMBERS_COUNT = 1000;
  28     private final static int AREA = 600;
  29     private final static int AREA_HALF = AREA / 2;
  30
  31     public static void main(final String[] args) throws IOException {
  32         new RainingNumbersDemo().run();
  33     }
  34
  35     @Override
  36     public boolean beforeViewUpdate(final ViewContext viewContext,
  37                                     final int millisecondsSinceLastFrame) {
  38
  39         final Collection<AbstractShape> shapes = viewContext
  40                 .getRootShapeCollection().getShapes();
  41
  42         final double translateAmount = millisecondsSinceLastFrame / 50d;
  43
  44         shapes.stream().filter(shape -> shape instanceof TextCanvas).forEach(shape -> {
  45             final TextCanvas block = (TextCanvas) shape;
  46             final Point3D location = block.getLocation();
  47             location.translateY(translateAmount);
  48
  49             if (location.y > AREA_HALF)
  50                 location.y -= AREA;
  51         });
  52
  53         return true;
  54     }
  55
  56     private void run() throws IOException {
  57         final ViewFrame viewFrame = new ViewFrame();
  58
  59         final ShapeCollection geometryCollection = viewFrame.getView()
  60                 .getContext().getRootShapeCollection();
  61
  62         Random random = new Random();
  63
  64         for (int i = 0; i < NUMBERS_COUNT; i++) {
  65             final Point3D location = new Point3D((Math.random() * AREA)
  66                     - AREA_HALF, (Math.random() * AREA) - AREA_HALF,
  67                     (Math.random() * AREA) - AREA_HALF);
  68
  69             final Color color = new Color(Math.random(), Math.random(),
  70                     Math.random(), Math.random());
  71
  72             final TextCanvas textCanvas = new TextCanvas(
  73                     new Transform(location), String.valueOf(random.nextInt(10)), color,
  74                     Color.TRANSPARENT);
  75
  76             geometryCollection.addShape(textCanvas);
  77         }
  78
  79         viewFrame.getView().addViewUpdateListener(this);
  80     }
  81 }