2 * Sixth 3D engine demos. Copyright ©2012-2018, Svjatoslav Agejenko, svjatoslav@svjatoslav.eu
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.
9 package eu.svjatoslav.sixth.e3d.examples;
11 import eu.svjatoslav.sixth.e3d.geometry.Point3D;
12 import eu.svjatoslav.sixth.e3d.math.Transform;
13 import eu.svjatoslav.sixth.e3d.gui.ViewContext;
14 import eu.svjatoslav.sixth.e3d.gui.ViewFrame;
15 import eu.svjatoslav.sixth.e3d.gui.humaninput.WorldNavigationTracker;
16 import eu.svjatoslav.sixth.e3d.renderer.octree.OctreeVolume;
17 import eu.svjatoslav.sixth.e3d.renderer.octree.raytracer.Camera;
18 import eu.svjatoslav.sixth.e3d.renderer.octree.raytracer.LightSource;
19 import eu.svjatoslav.sixth.e3d.renderer.octree.raytracer.RayTracer;
20 import eu.svjatoslav.sixth.e3d.renderer.raster.Color;
21 import eu.svjatoslav.sixth.e3d.renderer.raster.ShapeCollection;
22 import eu.svjatoslav.sixth.e3d.renderer.raster.shapes.basic.GlowingPoint;
23 import eu.svjatoslav.sixth.e3d.renderer.raster.shapes.basic.line.LineAppearance;
24 import eu.svjatoslav.sixth.e3d.renderer.raster.shapes.composite.LightSourceMarker;
25 import eu.svjatoslav.sixth.e3d.renderer.raster.shapes.composite.solid.SolidPolygonRectangularBox;
26 import eu.svjatoslav.sixth.e3d.renderer.raster.shapes.composite.textcanvas.TextCanvas;
27 import eu.svjatoslav.sixth.e3d.renderer.raster.shapes.composite.wireframe.Grid3D;
29 import java.awt.event.KeyEvent;
30 import java.util.Vector;
32 public class OctreeDemo extends WorldNavigationTracker {
34 private static final double magnification = 5;
35 private final LineAppearance gridAppearance = new LineAppearance(40, new Color(255,
37 private final Vector<LightSource> lights = new Vector<>();
38 private OctreeVolume octreeVolume;
39 private ShapeCollection shapeCollection;
40 private ViewContext context;
42 public static void main(final String[] args) {
43 new OctreeDemo().init();
46 private void addLight(final Point3D location, final Color color,
47 final float brightness) {
48 shapeCollection.addShape(new LightSourceMarker(new Point3D(location)
49 .scaleUp(magnification), color));
51 final LightSource lightSource = new LightSource(location, color,
54 lights.add(lightSource);
57 private void dotSpiral() {
58 for (double i = 0; i < 20; i = i + .1) {
63 final double x = Math.sin(i) * 20f * h;
64 final double y = Math.cos(i) * 20f * w;
65 final double c1 = (Math.cos(i * 3f) * 100) + 127;
66 final double c2 = (Math.cos(i * 5.3332f) * 100f) + 127;
67 final double c3 = (Math.cos(i * 1.342f) * 100f) + 127;
69 putPixel((int) x, (int) y, (int) (i * 4f), new Color((int) c1,
70 (int) c2, (int) c3, 255));
74 private void fractal(final int x, final int y, final int z, final int size,
76 final double c1 = (Math.cos(y / 7f) * 100f) + 127;
77 final double c2 = (Math.cos(x / 10f) * 100f) + 127;
78 final double c3 = (Math.cos(z / 12f) * 100f) + 127;
80 putRect(x - size, y - size, z - size, x + size, y + size, z + size,
81 new Color((int) c1, (int) c2, (int) c3, 100));
84 fractal(x, y - (size * 3), z, size / 2, step + 1);
85 fractal(x + (size * 3), y, z, size / 2, step + 1);
86 fractal(x, y, z + (size * 3), size / 2, step + 1);
92 final ViewFrame viewFrame = new ViewFrame();
93 context = viewFrame.getView().getContext();
95 context.getAvatar().setLocation(new Point3D(0, -30, -300));
97 octreeVolume = new OctreeVolume();
99 shapeCollection = context.getRootShapeCollection();
101 shapeCollection.addShape(new Grid3D(
102 new Point3D(-10000, -10000, -10000), new Point3D(10000, 10000,
103 10000), 4000, gridAppearance));
106 addLight(new Point3D(20, -450, 240), new Color(255, 255, 255, 255), 100);
109 addLight(new Point3D(-150, -116, 141), new Color(255, 0, 0, 255), 10);
113 // arbitrary rectangles
114 putRect(-10, -10, -10, 10, 10, -20, new Color(200, 255, 200, 100));
115 putRect(-3, 0, -30, 12, 3, 300, new Color(255, 200, 200, 100));
116 putRect(-20, 20, -20, 20, 80, 20, new Color(255, 200, 255, 100));
120 fractal(-50, 20, 100, 32, 1);
122 final TextCanvas message = new TextCanvas(new Transform(new Point3D(
123 -10, 20, -180)), "Press \"r\" to raytrace current wiew",
124 Color.WHITE, Color.PURPLE);
125 shapeCollection.addShape(message);
127 context.getKeyboardFocusTracker().setFocusOwner(this);
128 context.getView().repaintDuringNextViewUpdate();
132 public void keyPressed(final KeyEvent event, final ViewContext viewContext) {
134 if ('r' == event.getKeyChar()) {
138 super.keyPressed(event, viewContext);
141 private void putPixel(final int x, final int y, final int z,
143 shapeCollection.addShape(new GlowingPoint(new Point3D(x, y, z)
144 .scaleUp(magnification), 3 * magnification, color));
145 octreeVolume.putCell(x, y, z, color);
149 private void putRect(final int x1, final int y1, final int z1, final int x2,
150 final int y2, final int z2, final Color color) {
153 .addShape(new SolidPolygonRectangularBox(
154 new Point3D(x1, y1, z1).scaleUp(magnification),
155 new Point3D(x2, y2, z2).scaleUp(magnification), color));
157 octreeVolume.fillRect3D(x1, y1, z1, x2, y2, z2, color);
160 private void raytrace() {
161 // create and add camera object to scene
162 final Camera camera = new Camera(context.getAvatar(), magnification);
163 shapeCollection.addShape(camera);
165 // initialize and start Raytracer in a separate thread
166 final RayTracer rayTracer = new RayTracer(camera.getTexture(),
167 octreeVolume, lights, camera, context.getView());
168 final Thread thread = new Thread(rayTracer);
172 private void tiledFloor() {
174 final int size = step - 15;
175 for (int x = -200; x < 200; x += step)
176 for (int z = -200; z < 200; z += step)
177 putRect(x, 100, z, x + size, 110, z + size, new Color(255, 255,