src/main/java/eu/svjatoslav/sixth/e3d/examples/RandomPolygonsDemo.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.renderer.raster.Color;
  12 import eu.svjatoslav.sixth.e3d.renderer.raster.ShapeCollection;
  13 import eu.svjatoslav.sixth.e3d.renderer.raster.shapes.basic.line.LineAppearance;
  14 import eu.svjatoslav.sixth.e3d.renderer.raster.shapes.basic.solidpolygon.SolidPolygon;
  15 import eu.svjatoslav.sixth.e3d.renderer.raster.shapes.composite.wireframe.Grid3D;
  16
  17 public class RandomPolygonsDemo {
  18
  19     private static final double POLYGON_AVERAGE_SIZE = 130;
  20     private static final int POLYGON_COUNT = 1000;
  21
  22     private static void addRandomPolygon(final ShapeCollection geometryCollection) {
  23         final Point3D polygonLocation = getRandomPoint(1000);
  24
  25         final Point3D point1 = new Point3D(polygonLocation);
  26         point1.add(getRandomPoint(POLYGON_AVERAGE_SIZE));
  27
  28         final Point3D point2 = new Point3D(polygonLocation);
  29         point2.add(getRandomPoint(POLYGON_AVERAGE_SIZE));
  30
  31         final Point3D point3 = new Point3D(polygonLocation);
  32         point3.add(getRandomPoint(POLYGON_AVERAGE_SIZE));
  33
  34         final Color color = new Color(
  35                 getColorChannelBrightness(),
  36                 getColorChannelBrightness(),
  37                 getColorChannelBrightness(),
  38                 1);
  39
  40         final SolidPolygon polygon = new SolidPolygon(point1, point2, point3,
  41                 color);
  42         geometryCollection.addShape(polygon);
  43     }
  44
  45     /* I don't want very dark polygons, so ensure there is at least some
  46      * brightness present. */
  47     private static double getColorChannelBrightness() {
  48         return Math.random() * 0.7 + 0.3f;
  49     }
  50
  51     private static Point3D getRandomPoint(final double amplitude) {
  52         return new Point3D((Math.random() * amplitude * 2d) - amplitude,
  53                 (Math.random() * amplitude * 2d) - amplitude, (Math.random()
  54                 * amplitude * 2d)
  55                 - amplitude);
  56     }
  57
  58     public static void main(final String[] args) {
  59
  60         final ViewFrame viewFrame = new ViewFrame();
  61
  62         final ShapeCollection shapeCollection = viewFrame.getViewPanel()
  63                 .getRootShapeCollection();
  64
  65         // add grid
  66         final LineAppearance appearance = new LineAppearance(5, new Color(100,
  67                 100, 255, 60));
  68
  69         shapeCollection.addShape(new Grid3D(new Point3D(1000, -1000, -1000),
  70                 new Point3D(-1000, 1000, 1000), 300, appearance));
  71
  72         // add random polygons
  73         for (int i = 0; i < POLYGON_COUNT; i++)
  74             addRandomPolygon(shapeCollection);
  75
  76     }
  77 }