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

   1 /*
   2  * Sixth 3D engine demos. Author: Svjatoslav Agejenko.
   3  * This project is released under Creative Commons Zero (CC0) license.
   4  *
   5 */
   6
   7 package eu.svjatoslav.sixth.e3d.examples;
   8
   9 import eu.svjatoslav.sixth.e3d.geometry.Point3D;
  10 import eu.svjatoslav.sixth.e3d.gui.ViewFrame;
  11 import eu.svjatoslav.sixth.e3d.gui.ViewPanel;
  12 import eu.svjatoslav.sixth.e3d.gui.ViewRenderListener;
  13 import eu.svjatoslav.sixth.e3d.math.Transform;
  14 import eu.svjatoslav.sixth.e3d.renderer.raster.Color;
  15 import eu.svjatoslav.sixth.e3d.renderer.raster.ShapeCollection;
  16 import eu.svjatoslav.sixth.e3d.renderer.raster.shapes.AbstractShape;
  17 import eu.svjatoslav.sixth.e3d.renderer.raster.shapes.composite.textcanvas.TextCanvas;
  18
  19 import java.util.Collection;
  20 import java.util.Random;
  21
  22 public class RainingNumbersDemo implements ViewRenderListener {
  23
  24     private static final int NUMBERS_COUNT = 1000;
  25     private final static int AREA = 600;
  26     private final static int AREA_HALF = AREA / 2;
  27
  28     public static void main(final String[] args) {
  29         new RainingNumbersDemo().run();
  30     }
  31
  32     @Override
  33     public boolean beforeRender(final ViewPanel viewPanel,
  34                                 final int millisecondsSinceLastFrame) {
  35
  36         final Collection<AbstractShape> shapes = viewPanel
  37                 .getRootShapeCollection().getShapes();
  38
  39         final double translateAmount = millisecondsSinceLastFrame / 50d;
  40
  41         shapes.stream().filter(shape -> shape instanceof TextCanvas).forEach(shape -> {
  42             final TextCanvas block = (TextCanvas) shape;
  43             final Point3D location = block.getLocation();
  44             location.translateY(translateAmount);
  45
  46             if (location.y > AREA_HALF)
  47                 location.y -= AREA;
  48         });
  49
  50         return true;
  51     }
  52
  53     private void run() {
  54         final ViewFrame viewFrame = new ViewFrame();
  55
  56         final ShapeCollection geometryCollection = viewFrame.getViewPanel()
  57                 .getRootShapeCollection();
  58
  59         Random random = new Random();
  60
  61         for (int i = 0; i < NUMBERS_COUNT; i++) {
  62             final Point3D location = new Point3D((Math.random() * AREA)
  63                     - AREA_HALF, (Math.random() * AREA) - AREA_HALF,
  64                     (Math.random() * AREA) - AREA_HALF);
  65
  66             final Color color = new Color(Math.random(), Math.random(),
  67                     Math.random(), Math.random());
  68
  69             final TextCanvas textCanvas = new TextCanvas(
  70                     new Transform(location), String.valueOf(random.nextInt(10)), color,
  71                     Color.TRANSPARENT);
  72
  73             geometryCollection.addShape(textCanvas);
  74         }
  75
  76         viewFrame.getViewPanel().addViewUpdateListener(this);
  77     }
  78 }