Java tutorial
/* * LightScopeApp.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 demonstrates the use of scoping for controlling * the influence of lights. * * This applicaion is not necessarilly a demonstration of good * program design or coding. * * 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.BranchGroup; import javax.media.j3d.Canvas3D; import javax.media.j3d.DirectionalLight; import javax.media.j3d.GeometryArray; import javax.media.j3d.Material; import javax.media.j3d.PointLight; import javax.media.j3d.PolygonAttributes; import javax.media.j3d.QuadArray; import javax.media.j3d.Shape3D; import javax.media.j3d.Transform3D; import javax.media.j3d.TransformGroup; import javax.media.j3d.TriangleStripArray; import javax.vecmath.Color3f; import javax.vecmath.Point3f; import javax.vecmath.Vector3f; import com.sun.j3d.utils.applet.MainFrame; import com.sun.j3d.utils.geometry.Box; import com.sun.j3d.utils.universe.SimpleUniverse; /** * LightScopeApp creates a scene that is paritally light by a light using the * scoping feature. */ public class LightScopeApp extends Applet { Appearance createMaterialAppearance(Color3f color) { Appearance appear = new Appearance(); Material material = new Material(); material.setDiffuseColor(color); material.setShininess(50.0f); appear.setMaterial(material); return appear; } Shape3D createXZPlane(Point3f p0, Point3f p1, Point3f p2, Point3f p3) { Shape3D plane = new Shape3D(); QuadArray planeGeom = new QuadArray(4, QuadArray.COORDINATES | QuadArray.NORMALS); planeGeom.setCoordinate(0, p0); planeGeom.setCoordinate(1, p1); planeGeom.setCoordinate(2, p2); planeGeom.setCoordinate(3, p3); Vector3f norm = new Vector3f(0.0f, 1.0f, 0.0f); planeGeom.setNormal(0, norm); planeGeom.setNormal(1, norm); planeGeom.setNormal(2, norm); planeGeom.setNormal(3, norm); plane.setGeometry(planeGeom); return plane; } Shape3D createLampShape() { Shape3D lamp = new Shape3D(); int stripCounts[] = { 10, 10 }; TriangleStripArray lampGeom = new TriangleStripArray(20, GeometryArray.COORDINATES | GeometryArray.NORMALS, stripCounts); lampGeom.setCoordinate(0, new Point3f(-0.01f, 0.9f, 0.01f)); lampGeom.setCoordinate(1, new Point3f(-0.01f, 0.0f, 0.01f)); lampGeom.setCoordinate(2, new Point3f(0.01f, 0.9f, 0.01f)); lampGeom.setCoordinate(3, new Point3f(0.01f, 0.0f, 0.01f)); lampGeom.setCoordinate(4, new Point3f(0.01f, 0.9f, -0.01f)); lampGeom.setCoordinate(5, new Point3f(0.01f, 0.0f, -0.01f)); lampGeom.setCoordinate(6, new Point3f(-0.01f, 0.9f, -0.01f)); lampGeom.setCoordinate(7, new Point3f(-0.01f, 0.0f, -0.01f)); lampGeom.setCoordinate(8, new Point3f(-0.01f, 0.9f, 0.01f)); lampGeom.setCoordinate(9, new Point3f(-0.01f, 0.0f, 0.01f)); lampGeom.setCoordinate(10, new Point3f(-0.1f, 0.9f, 0.1f)); lampGeom.setCoordinate(11, new Point3f(-0.2f, 0.5f, 0.2f)); lampGeom.setCoordinate(12, new Point3f(0.1f, 0.9f, 0.1f)); lampGeom.setCoordinate(13, new Point3f(0.2f, 0.5f, 0.2f)); lampGeom.setCoordinate(14, new Point3f(0.1f, 0.9f, -0.1f)); lampGeom.setCoordinate(15, new Point3f(0.2f, 0.5f, -0.2f)); lampGeom.setCoordinate(16, new Point3f(-0.1f, 0.9f, -0.1f)); lampGeom.setCoordinate(17, new Point3f(-0.2f, 0.5f, -0.2f)); lampGeom.setCoordinate(18, new Point3f(-0.1f, 0.9f, 0.1f)); lampGeom.setCoordinate(19, new Point3f(-0.2f, 0.5f, 0.2f)); Vector3f norm = new Vector3f(-0.7f, 0.0f, 0.7f); lampGeom.setNormal(0, norm); lampGeom.setNormal(1, norm); norm.set(0.7f, 0.0f, 0.7f); lampGeom.setNormal(2, norm); lampGeom.setNormal(3, norm); norm.set(0.7f, 0.0f, -0.7f); lampGeom.setNormal(4, norm); lampGeom.setNormal(5, norm); norm.set(-0.7f, 0.0f, -0.7f); lampGeom.setNormal(6, norm); lampGeom.setNormal(7, norm); norm.set(-0.7f, 0.0f, 0.7f); lampGeom.setNormal(8, norm); lampGeom.setNormal(9, norm); norm.set(-0.7f, 0.0f, 0.7f); lampGeom.setNormal(10, norm); lampGeom.setNormal(11, norm); norm.set(0.7f, 0.0f, 0.7f); lampGeom.setNormal(12, norm); lampGeom.setNormal(13, norm); norm.set(0.7f, 0.0f, -0.7f); lampGeom.setNormal(14, norm); lampGeom.setNormal(15, norm); norm.set(-0.7f, 0.0f, -0.7f); lampGeom.setNormal(16, norm); lampGeom.setNormal(17, norm); norm.set(-0.7f, 0.0f, 0.7f); lampGeom.setNormal(18, norm); lampGeom.setNormal(19, norm); lamp.setGeometry(lampGeom); return lamp; } BranchGroup createScene() { BranchGroup scene = new BranchGroup(); TransformGroup tableTG = new TransformGroup(); TransformGroup lampTG = new TransformGroup(); TransformGroup litBoxTG = new TransformGroup(); TransformGroup unLitBoxTG = new TransformGroup(); scene.addChild(tableTG); tableTG.addChild(lampTG); tableTG.addChild(litBoxTG); tableTG.addChild(unLitBoxTG); Color3f white = new Color3f(1.0f, 1.0f, 1.0f); Color3f red = new Color3f(1.0f, 0.0f, 0.0f); Color3f blue = new Color3f(0.0f, 1.0f, 0.0f); Color3f green = new Color3f(0.0f, 0.0f, 1.0f); Color3f black = new Color3f(0.0f, 0.0f, 0.0f); Vector3f transVector = new Vector3f(); Transform3D transTransform = new Transform3D(); transVector.set(0.0f, -0.4f, 0.5f); transTransform.setTranslation(transVector); tableTG.setTransform(transTransform); transVector.set(-0.4f, 0.001f, 0.1f); transTransform.setTranslation(transVector); lampTG.setTransform(transTransform); transVector.set(-0.2f, 0.1f, 0.2f); transTransform.setTranslation(transVector); litBoxTG.setTransform(transTransform); transVector.set(0.3f, 0.1f, -0.4f); transTransform.setTranslation(transVector); unLitBoxTG.setTransform(transTransform); Shape3D tablePlane = createXZPlane(new Point3f(-1.0f, 0.0f, -1.0f), new Point3f(-1.0f, 0.0f, 1.0f), new Point3f(1.0f, 0.0f, 1.0f), new Point3f(1.0f, 0.0f, -1.0f)); tablePlane.setAppearance(createMaterialAppearance(white)); tableTG.addChild(tablePlane); litBoxTG.addChild(new Box(0.1f, 0.1f, 0.1f, Box.GENERATE_NORMALS, createMaterialAppearance(red))); Shape3D shadowPlane = createXZPlane(new Point3f(0.1f, -0.095f, -0.1f), new Point3f(0.1f, -0.095f, 0.1f), new Point3f(0.2f, -0.095f, 0.15f), new Point3f(0.2f, -0.095f, -0.15f)); shadowPlane.setAppearance(createMaterialAppearance(black)); litBoxTG.addChild(shadowPlane); Appearance redGlowMat = createMaterialAppearance(red); // redGlowMat.getMaterial().setEmissiveColor(0.5f, 0.5f, 0.5f); unLitBoxTG.addChild(new Box(0.1f, 0.1f, 0.1f, Box.GENERATE_NORMALS, redGlowMat)); Shape3D lamp = createLampShape(); Appearance lampAppearance = createMaterialAppearance(blue); PolygonAttributes polyAttrib = new PolygonAttributes(); polyAttrib.setCullFace(PolygonAttributes.CULL_NONE); polyAttrib.setBackFaceNormalFlip(true); lampAppearance.setPolygonAttributes(polyAttrib); lamp.setAppearance(lampAppearance); lampTG.addChild(lamp); PointLight lampLight = new PointLight(); lampLight.setPosition(0.1f, 0.5f, -0.1f); lampLight.setInfluencingBounds(new BoundingSphere()); lampTG.addChild(lampLight); Shape3D litPlane = createXZPlane(new Point3f(-0.4f, 0.0f, -0.4f), new Point3f(-0.4f, 0.0f, 0.4f), new Point3f(0.4f, 0.0f, 0.4f), new Point3f(0.4f, 0.0f, -0.4f)); litPlane.setAppearance(createMaterialAppearance(white)); lampTG.addChild(litPlane); lampLight.addScope(lampTG); lampLight.addScope(litBoxTG); AmbientLight lightA = new AmbientLight(); lightA.setInfluencingBounds(new BoundingSphere()); scene.addChild(lightA); DirectionalLight lightD1 = new DirectionalLight(); lightD1.setInfluencingBounds(new BoundingSphere()); lightD1.setColor(new Color3f(0.4f, 0.4f, 0.4f)); Vector3f lightDir = new Vector3f(-1.0f, -1.0f, -1.0f); lightDir.normalize(); lightD1.setDirection(lightDir); scene.addChild(lightD1); DirectionalLight lightD2 = new DirectionalLight(); lightD2.setInfluencingBounds(new BoundingSphere()); lightD2.setColor(new Color3f(0.2f, 0.2f, 0.2f)); lightDir.set(1.0f, -1.0f, -1.0f); lightDir.normalize(); lightD2.setDirection(lightDir); scene.addChild(lightD2); Background bg = new Background(); bg.setColor(1.0f, 1.0f, 1.0f); bg.setApplicationBounds(new BoundingSphere()); scene.addChild(bg); return scene; } public LightScopeApp() { setLayout(new BorderLayout()); Canvas3D c = new Canvas3D(null); add("Center", c); BranchGroup scene = createScene(); scene.compile(); 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[]) { new MainFrame(new LightScopeApp(), 256, 256); } }