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

   1 /*
   2  * Sixth - System for data storage, computation, exploration and interaction.
   3  * Copyright ©2012-2016, Svjatoslav Agejenko, svjatoslav@svjatoslav.eu
   4  *
   5  * This program is free software; you can redistribute it and/or
   6  * modify it under the terms of version 3 of the GNU Lesser General Public License
   7  * or later as published by the Free Software Foundation.
   8  */
   9
  10 package eu.svjatoslav.sixth.e3d.examples;
  11
  12 import eu.svjatoslav.sixth.e3d.geometry.Point3D;
  13 import eu.svjatoslav.sixth.e3d.geometry.Transform;
  14 import eu.svjatoslav.sixth.e3d.gui.ViewContext;
  15 import eu.svjatoslav.sixth.e3d.gui.ViewFrame;
  16 import eu.svjatoslav.sixth.e3d.gui.ViewUpdateListener;
  17 import eu.svjatoslav.sixth.e3d.renderer.raster.Color;
  18 import eu.svjatoslav.sixth.e3d.renderer.raster.ShapeCollection;
  19 import eu.svjatoslav.sixth.e3d.renderer.raster.shapes.AbstractShape;
  20 import eu.svjatoslav.sixth.e3d.renderer.raster.shapes.composite.textcanvas.TextCanvas;
  21
  22 import java.io.IOException;
  23 import java.util.Collection;
  24 import java.util.Random;
  25
  26 public class RainingNumbersDemo implements ViewUpdateListener {
  27
  28     private static final int NUMBERS_COUNT = 1000;
  29     private final static int AREA = 600;
  30     private final static int AREA_HALF = AREA / 2;
  31
  32     public static void main(final String[] args) throws IOException {
  33         new RainingNumbersDemo().run();
  34     }
  35
  36     @Override
  37     public boolean beforeViewUpdate(final ViewContext viewContext,
  38                                     final int millisecondsSinceLastFrame) {
  39
  40         final Collection<AbstractShape> shapes = viewContext
  41                 .getRootShapeCollection().getShapes();
  42
  43         final double translateAmount = millisecondsSinceLastFrame / 50d;
  44
  45         shapes.stream().filter(shape -> shape instanceof TextCanvas).forEach(shape -> {
  46             final TextCanvas block = (TextCanvas) shape;
  47             final Point3D location = block.getLocation();
  48             location.translateY(translateAmount);
  49
  50             if (location.y > AREA_HALF)
  51                 location.y -= AREA;
  52         });
  53
  54         return true;
  55     }
  56
  57     private void run() throws IOException {
  58         final ViewFrame viewFrame = new ViewFrame();
  59
  60         final ShapeCollection geometryCollection = viewFrame.getView()
  61                 .getContext().getRootShapeCollection();
  62
  63         Random random = new Random();
  64
  65         for (int i = 0; i < NUMBERS_COUNT; i++) {
  66             final Point3D location = new Point3D((Math.random() * AREA)
  67                     - AREA_HALF, (Math.random() * AREA) - AREA_HALF,
  68                     (Math.random() * AREA) - AREA_HALF);
  69
  70             final Color color = new Color(Math.random(), Math.random(),
  71                     Math.random(), Math.random());
  72
  73             final TextCanvas textCanvas = new TextCanvas(
  74                     new Transform(location), String.valueOf(random.nextInt(10)), color,
  75                     Color.TRANSPARENT);
  76
  77             geometryCollection.addShape(textCanvas);
  78         }
  79
  80         viewFrame.getView().addViewUpdateListener(this);
  81     }
  82 }