Java tutorial
/* * SpotLightApp.java 1.0 99/04/12 * * Copyright (c) 1999 Sun Microsystems, Inc. All Rights Reserved. * * Sun grants you ("Licensee") a non-exclusive, royalty free, license to use, * modify and redistribute this software in source and binary code form, * provided that i) this copyright notice and license appear on all copies of * the software; and ii) Licensee does not utilize the software in a manner * which is disparaging to Sun. * * This software is provided "AS IS," without a warranty of any kind. ALL * EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND WARRANTIES, INCLUDING ANY * IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE OR * NON-INFRINGEMENT, ARE HEREBY EXCLUDED. SUN AND ITS LICENSORS SHALL NOT BE * LIABLE FOR ANY DAMAGES SUFFERED BY LICENSEE AS A RESULT OF USING, MODIFYING * OR DISTRIBUTING THE SOFTWARE OR ITS DERIVATIVES. IN NO EVENT WILL SUN OR ITS * LICENSORS BE LIABLE FOR ANY LOST REVENUE, PROFIT OR DATA, OR FOR DIRECT, * INDIRECT, SPECIAL, CONSEQUENTIAL, INCIDENTAL OR PUNITIVE DAMAGES, HOWEVER * CAUSED AND REGARDLESS OF THE THEORY OF LIABILITY, ARISING OUT OF THE USE OF * OR INABILITY TO USE SOFTWARE, EVEN IF SUN HAS BEEN ADVISED OF THE * POSSIBILITY OF SUCH DAMAGES. * * This software is not designed or intended for use in on-line control of * aircraft, air traffic, aircraft navigation or aircraft communications; or in * the design, construction, operation or maintenance of any nuclear * facility. Licensee represents and warrants that it will not use or * redistribute the Software for such purposes. */ /* * This application (or a version of it) generated one or more * of the images in Chapter 6 of Getting Started with the Java 3D API. * The Java 3D Turtorial. * * See http://www.sun.com/desktop/java3d/collateral for more information. * */ import java.applet.Applet; import java.awt.BorderLayout; import javax.media.j3d.AmbientLight; import javax.media.j3d.Appearance; import javax.media.j3d.Background; import javax.media.j3d.BoundingSphere; import javax.media.j3d.Bounds; import javax.media.j3d.BranchGroup; import javax.media.j3d.Canvas3D; import javax.media.j3d.IndexedQuadArray; import javax.media.j3d.Material; import javax.media.j3d.QuadArray; import javax.media.j3d.Shape3D; import javax.media.j3d.SpotLight; import javax.media.j3d.Transform3D; import javax.media.j3d.TransformGroup; import javax.vecmath.Color3f; import javax.vecmath.Point3d; import javax.vecmath.Point3f; import javax.vecmath.Vector3f; import com.sun.j3d.utils.applet.MainFrame; import com.sun.j3d.utils.universe.SimpleUniverse; /** * SpotLightApp creates */ public class SpotLightApp extends Applet { Appearance createMatAppear(Color3f dColor, Color3f sColor, float shine) { Appearance appear = new Appearance(); Material material = new Material(); material.setDiffuseColor(dColor); material.setSpecularColor(sColor); material.setShininess(shine); appear.setMaterial(material); return appear; } SpotLight newSpotLight(Bounds bounds, Point3f pos, float spread, float concentration) { SpotLight sl = new SpotLight(); sl.setInfluencingBounds(bounds); sl.setPosition(pos); sl.setSpreadAngle(spread); sl.setConcentration(concentration); return sl; } public SpotLightApp() { BoundingSphere bound1 = new BoundingSphere(new Point3d(0.0, 0.9, 0.0), 0.5); BoundingSphere bound2 = new BoundingSphere(new Point3d(0.0, 0.0, 0.0), 0.5); BoundingSphere bound3 = new BoundingSphere(new Point3d(0.0, -0.9, 0.0), 0.5); Vector3f direction = new Vector3f(0.0f, 0.0f, -1.0f); Color3f white = new Color3f(1.0f, 1.0f, 1.0f); Color3f red = new Color3f(1.0f, 0.0f, 0.0f); Color3f green = new Color3f(0.0f, 1.0f, 0.0f); Color3f blue = new Color3f(0.0f, 0.0f, 1.0f); BranchGroup scene = new BranchGroup(); final int X = 101, Y = 102; final float dx = 0.01f, dy = -0.01f; final float epx = dx / 2.0f, epy = dy / 2.0f; final float top = 0.5f, left = -0.5f; final float right = left + dx * (X - 1); final float bottom = top + dy * (Y - 1); IndexedQuadArray qa = new IndexedQuadArray(X * Y, QuadArray.COORDINATES | QuadArray.NORMALS, (X - 1) * (Y - 1) * 4); float x, y; int i = 0; System.out.print("set " + X * Y + " coordiantes..... "); for (y = top; y >= bottom - epx; y += dy) for (x = left; x <= right + epx; x += dx) qa.setCoordinate(i++, new Point3f(x, y, 0.0f)); System.out.println(i + " coordiantes done"); int row, col; i = 0; Vector3f n = new Vector3f(0.0f, 0.0f, 1.0f); System.out.print("set " + (X - 1) * (Y - 1) * 4 + " coordinate indices..... "); for (row = 0; row < (Y - 1); row++) { for (col = 0; col < (X - 1); col++) { qa.setNormal(row * X + col, n); qa.setCoordinateIndex(i++, row * X + col); qa.setCoordinateIndex(i++, (row + 1) * X + col); qa.setCoordinateIndex(i++, (row + 1) * X + col + 1); qa.setCoordinateIndex(i++, row * X + col + 1); } qa.setNormal(row * X + col + 1, n); } System.out.println(i + " coordinate indices done"); for (col = 0; col < (X - 1); col++) { qa.setNormal(X * (Y - 1) + 1 + col, n); } System.out.println("coordinate normals done"); Appearance qAppear = createMatAppear(blue, white, 5.0f); Shape3D plane = new Shape3D(qa, qAppear); Transform3D translate = new Transform3D(); translate.set(new Vector3f(-0.5f, 0.5f, 0.0f)); TransformGroup tg1 = new TransformGroup(translate); scene.addChild(tg1); Shape3D plane1 = new Shape3D(qa, qAppear); plane1.setBounds(bound1); tg1.addChild(plane1); translate.set(new Vector3f(0.5f, 0.5f, 0.0f)); TransformGroup tg2 = new TransformGroup(translate); scene.addChild(tg2); Shape3D plane2 = new Shape3D(qa, qAppear); plane2.setBounds(bound1); tg2.addChild(plane2); translate.set(new Vector3f(-0.5f, -0.5f, 0.0f)); TransformGroup tg3 = new TransformGroup(translate); scene.addChild(tg3); Shape3D plane3 = new Shape3D(qa, qAppear); plane3.setBounds(bound3); tg3.addChild(plane3); translate.set(new Vector3f(0.5f, -0.5f, 0.0f)); TransformGroup tg4 = new TransformGroup(translate); scene.addChild(tg4); Shape3D plane4 = new Shape3D(qa, qAppear); plane4.setBounds(bound3); tg4.addChild(plane4); AmbientLight lightA = new AmbientLight(); lightA.setInfluencingBounds(new BoundingSphere()); scene.addChild(lightA); scene.addChild(newSpotLight(bound1, new Point3f(-0.7f, 0.7f, 0.5f), 0.1f, 5.0f)); scene.addChild(newSpotLight(bound1, new Point3f(0.0f, 0.7f, 0.5f), 0.1f, 50.0f)); scene.addChild(newSpotLight(bound1, new Point3f(0.7f, 0.7f, 0.5f), 0.1f, 100.0f)); scene.addChild(newSpotLight(bound2, new Point3f(-0.7f, 0.0f, 0.5f), 0.3f, 5.0f)); scene.addChild(newSpotLight(bound2, new Point3f(0.0f, 0.0f, 0.5f), 0.3f, 50.0f)); scene.addChild(newSpotLight(bound2, new Point3f(0.7f, 0.0f, 0.5f), 0.3f, 100.0f)); scene.addChild(newSpotLight(bound3, new Point3f(-0.7f, -0.7f, 0.5f), 0.5f, 5.0f)); scene.addChild(newSpotLight(bound3, new Point3f(0.0f, -0.7f, 0.5f), 0.5f, 50.0f)); scene.addChild(newSpotLight(bound3, new Point3f(0.7f, -0.7f, 0.5f), 0.5f, 100.0f)); Background background = new Background(); background.setApplicationBounds(new BoundingSphere()); background.setColor(1.0f, 1.0f, 1.0f); scene.addChild(background); scene.compile(); setLayout(new BorderLayout()); Canvas3D c = new Canvas3D(null); add("Center", c); SimpleUniverse u = new SimpleUniverse(c); // This will move the ViewPlatform back a bit so the // objects in the scene can be viewed. u.getViewingPlatform().setNominalViewingTransform(); u.addBranchGraph(scene); } public static void main(String argv[]) { System.out.println("SpotLightApp"); System.out.println("illustrates the differences between spot light paramters"); System.out.println("depending on your system.... this may take a few minutes"); new MainFrame(new SpotLightApp(), 256, 256); } }