2 * Sixth 3D engine demos. Author: Svjatoslav Agejenko.
3 * This project is released under Creative Commons Zero (CC0) license.
7 package eu.svjatoslav.sixth.e3d.examples;
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.humaninput.WorldNavigationUserInputTracker;
13 import eu.svjatoslav.sixth.e3d.math.Transform;
14 import eu.svjatoslav.sixth.e3d.renderer.octree.IntegerPoint;
15 import eu.svjatoslav.sixth.e3d.renderer.octree.OctreeVolume;
16 import eu.svjatoslav.sixth.e3d.renderer.octree.raytracer.Camera;
17 import eu.svjatoslav.sixth.e3d.renderer.octree.raytracer.LightSource;
18 import eu.svjatoslav.sixth.e3d.renderer.octree.raytracer.RayTracer;
19 import eu.svjatoslav.sixth.e3d.renderer.raster.Color;
20 import eu.svjatoslav.sixth.e3d.renderer.raster.ShapeCollection;
21 import eu.svjatoslav.sixth.e3d.renderer.raster.shapes.basic.GlowingPoint;
22 import eu.svjatoslav.sixth.e3d.renderer.raster.shapes.basic.line.LineAppearance;
23 import eu.svjatoslav.sixth.e3d.renderer.raster.shapes.composite.LightSourceMarker;
24 import eu.svjatoslav.sixth.e3d.renderer.raster.shapes.composite.solid.SolidPolygonRectangularBox;
25 import eu.svjatoslav.sixth.e3d.renderer.raster.shapes.composite.textcanvas.TextCanvas;
26 import eu.svjatoslav.sixth.e3d.renderer.raster.shapes.composite.wireframe.Grid3D;
28 import java.awt.event.KeyEvent;
29 import java.util.Vector;
31 public class OctreeDemo extends WorldNavigationUserInputTracker {
33 private static final double magnification = 5;
34 private final LineAppearance gridAppearance = new LineAppearance(40, new Color(255,
36 private final Vector<LightSource> lights = new Vector<>();
37 private OctreeVolume octreeVolume;
38 private ShapeCollection shapeCollection;
39 private ViewPanel viewPanel;
41 public static void main(final String[] args) {
42 new OctreeDemo().init();
45 private void addLight(final Point3D location, final Color color,
46 final float brightness) {
47 shapeCollection.addShape(new LightSourceMarker(new Point3D(location)
48 .scaleUp(magnification), color));
50 final LightSource lightSource = new LightSource(location, color,
53 lights.add(lightSource);
56 private void dotSpiral() {
57 for (double i = 0; i < 20; i = i + .1) {
62 final double x = Math.sin(i) * 20f * h;
63 final double y = Math.cos(i) * 20f * w;
64 final double c1 = (Math.cos(i * 3f) * 100) + 127;
65 final double c2 = (Math.cos(i * 5.3332f) * 100f) + 127;
66 final double c3 = (Math.cos(i * 1.342f) * 100f) + 127;
68 putPixel((int) x, (int) y, (int) (i * 4f), new Color((int) c1,
69 (int) c2, (int) c3, 255));
73 private void fractal(final int x, final int y, final int z, final int size,
75 final double c1 = (Math.cos(y / 7f) * 100f) + 127;
76 final double c2 = (Math.cos(x / 10f) * 100f) + 127;
77 final double c3 = (Math.cos(z / 12f) * 100f) + 127;
80 new IntegerPoint( x - size, y - size, z - size),
81 new IntegerPoint( x + size, y + size, z + size),
82 new Color((int) c1, (int) c2, (int) c3, 100));
85 fractal(x, y - (size * 3), z, size / 2, step + 1);
86 fractal(x + (size * 3), y, z, size / 2, step + 1);
87 fractal(x, y, z + (size * 3), size / 2, step + 1);
93 final ViewFrame viewFrame = new ViewFrame();
94 viewPanel = viewFrame.getViewPanel();
96 viewPanel.getAvatar().setLocation(new Point3D(0, -30, -300));
98 octreeVolume = new OctreeVolume();
100 shapeCollection = viewPanel.getRootShapeCollection();
102 shapeCollection.addShape(new Grid3D(
103 new Point3D(-10000, -10000, -10000), new Point3D(10000, 10000,
104 10000), 4000, gridAppearance));
107 addLight(new Point3D(20, -450, 240), new Color(255, 255, 255, 255), 100);
110 addLight(new Point3D(-150, -116, 141), new Color(255, 0, 0, 255), 10);
114 // arbitrary rectangles
115 putRect(new IntegerPoint(-10, -10, -10),
116 new IntegerPoint(10, 10, -20),
117 new Color(200, 255, 200, 100));
119 putRect(new IntegerPoint(-3, 0, -30),
120 new IntegerPoint( 12, 3, 300),
121 new Color(255, 200, 200, 100));
123 putRect(new IntegerPoint(-20, 20, -20),
124 new IntegerPoint(20, 80, 20),
125 new Color(255, 200, 255, 100));
129 fractal(-50, 20, 100, 32, 1);
131 final TextCanvas message = new TextCanvas(new Transform(new Point3D(
132 -10, 20, -180)), "Press \"r\" to raytrace current view",
133 Color.WHITE, Color.PURPLE);
134 shapeCollection.addShape(message);
136 viewPanel.getKeyboardFocusStack().pushFocusOwner(this);
137 viewPanel.repaintDuringNextViewUpdate();
141 public boolean keyPressed(final KeyEvent event, final ViewPanel viewPanel) {
143 if ('r' == event.getKeyChar()) {
147 return super.keyPressed(event, viewPanel);
150 private void putPixel(final int x, final int y, final int z,
152 shapeCollection.addShape(new GlowingPoint(new Point3D(x, y, z)
153 .scaleUp(magnification), 3 * magnification, color));
154 octreeVolume.putCell(x, y, z, color);
158 private void putRect(IntegerPoint p1, IntegerPoint p2, final Color color) {
161 .addShape(new SolidPolygonRectangularBox(
162 new Point3D(p1).scaleUp(magnification),
163 new Point3D(p2).scaleUp(magnification), color));
165 octreeVolume.fillRectangle(p1, p2, color);
168 private void raytrace() {
169 // create and add camera object to scene
170 final Camera camera = new Camera(viewPanel.getAvatar(), magnification);
171 shapeCollection.addShape(camera);
173 // initialize and start Raytracer in a separate thread
174 final RayTracer rayTracer = new RayTracer(camera.getTexture(),
175 octreeVolume, lights, camera, viewPanel);
176 final Thread thread = new Thread(rayTracer);
180 private void tiledFloor() {
182 final int size = step - 15;
183 Color color = new Color(255, 255, 255, 100);
184 for (int x = -200; x < 200; x += step)
185 for (int z = -200; z < 200; z += step)
187 new IntegerPoint(x, 100, z),
188 new IntegerPoint(x + size, 110, z + size),