Refactoring.
[sixth-3d-demos.git] / src / main / java / eu / svjatoslav / sixth / e3d / examples / SphereDemo.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.renderer.raster.Color;
15 import eu.svjatoslav.sixth.e3d.renderer.raster.ShapeCollection;
16 import eu.svjatoslav.sixth.e3d.renderer.raster.shapes.basic.line.LineAppearance;
17 import eu.svjatoslav.sixth.e3d.renderer.raster.shapes.basic.solidpolygon.SolidPolygon;
18 import eu.svjatoslav.sixth.e3d.renderer.raster.shapes.composite.wireframe.WireframeSphere;
19
20 public class SphereDemo {
21
22     private static final double WAVE_FREQUENCY = 50d;
23     private static final double WAVE_AMPLITUDE = 50d;
24     private static final Color SQUARE_PLATE_COLOR = new Color("88F7");
25
26     private static void makeSquarePlate(final ShapeCollection shapeCollection,
27                                         final double y, final double x, final double z) {
28         final Point3D p1 = new Point3D(x, y, z);
29         final Point3D p2 = new Point3D(x + 20, y, z);
30         final Point3D p3 = new Point3D(x, y, z + 20);
31         final Point3D p4 = new Point3D(x + 20, y, z + 20);
32         final SolidPolygon polygon1 = new SolidPolygon(p1, p2, p3, SQUARE_PLATE_COLOR);
33         final SolidPolygon polygon2 = new SolidPolygon(p4, p2, p3, SQUARE_PLATE_COLOR);
34         shapeCollection.addShape(polygon1);
35         shapeCollection.addShape(polygon2);
36     }
37
38     /**
39      * @param surfaceElevation surface total elevation
40      */
41     private static void makeWobblySurface(final ShapeCollection shapeCollection,
42                                           final double surfaceElevation) {
43         for (double x = -500; x < 500; x += 20)
44             for (double z = -500; z < 500; z += 20) {
45
46                 // use Pythagorean theorem to compute distance from the center
47                 final double distanceFromCenter = Math.sqrt((x * x) + (z * z));
48
49                 double plateElevation = Math.sin(distanceFromCenter / WAVE_FREQUENCY) * WAVE_AMPLITUDE;
50
51                 makeSquarePlate(shapeCollection, plateElevation + surfaceElevation, x,
52                         z);
53             }
54     }
55
56     public static void main(final String[] args) {
57
58         final ViewFrame viewFrame = new ViewFrame();
59         final ViewPanel viewPanel = viewFrame.getViewPanel();
60
61         final ShapeCollection geometryCollection = viewPanel
62                 .getRootShapeCollection();
63
64         final LineAppearance appearance = new LineAppearance(4, new Color(255,
65                 0, 0, 30));
66
67         // add sphere
68         geometryCollection.addShape(new WireframeSphere(new Point3D(0, 0, 0),
69                 100, appearance));
70
71         // create floor
72         makeWobblySurface(geometryCollection, 200);
73         makeWobblySurface(geometryCollection, -200);
74
75         viewPanel.getAvatar().setLocation(new Point3D(0, 0, -340));
76
77     }
78 }