Java tutorial
/* * @(#)OrientedPtTest.java 1.10 02/10/21 13:47:48 * * Copyright (c) 1996-2002 Sun Microsystems, Inc. All Rights Reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions are met: * - Redistributions of source code must retain the above copyright notice, * this list of conditions and the following disclaimer. * - Redistribution in binary form must reproduce the above copyright notice, * this list of conditions and the following disclaimer in the documentation * and/or other materials provided with the distribution. * * Neither the name of Sun Microsystems, Inc. or the names of contributors may * be used to endorse or promote products derived from this software without * specific prior written permission. * * 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. * * You acknowledge that Software is not designed,licensed or intended for use in * the design, construction, operation or maintenance of any nuclear facility. */ import java.applet.Applet; import java.awt.BorderLayout; import java.awt.Font; 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.Font3D; import javax.media.j3d.FontExtrusion; import javax.media.j3d.Material; import javax.media.j3d.OrientedShape3D; import javax.media.j3d.Text3D; import javax.media.j3d.TextureAttributes; 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.Vector3d; import javax.vecmath.Vector3f; import com.sun.j3d.utils.applet.MainFrame; import com.sun.j3d.utils.behaviors.vp.OrbitBehavior; import com.sun.j3d.utils.geometry.ColorCube; import com.sun.j3d.utils.geometry.Cone; import com.sun.j3d.utils.geometry.Cylinder; import com.sun.j3d.utils.geometry.Sphere; import com.sun.j3d.utils.image.TextureLoader; import com.sun.j3d.utils.universe.SimpleUniverse; import com.sun.j3d.utils.universe.ViewingPlatform; public class OrientedPtTest extends Applet { // setup font stuff private String fontName = "TestFont"; private String textString = "OrientedShape3D"; float sl = textString.length(); // paths to texture image files private java.net.URL earthImage = null; private java.net.URL stoneImage = null; private SimpleUniverse u; public BranchGroup createSceneGraph() { // Create the root of the branch graph BranchGroup objRoot = new BranchGroup(); TransformGroup objScale = new TransformGroup(); Transform3D textMat = new Transform3D(); // Assuming uniform size chars, set scale to fit string in view textMat.setScale(1.2 / sl); objScale.setTransform(textMat); // Create the transform group node and initialize it to the // identity. Enable the TRANSFORM_WRITE capability so that // our behavior code can modify it at runtime. Add it to the // root of the subgraph. TransformGroup objTrans = new TransformGroup(); objTrans.setCapability(TransformGroup.ALLOW_TRANSFORM_WRITE); objTrans.setCapability(TransformGroup.ALLOW_TRANSFORM_READ); objRoot.addChild(objTrans); BoundingSphere bounds = new BoundingSphere(new Point3d(0.0, 0.0, 0.0), 100.0); Appearance apText = new Appearance(); Material m = new Material(); m.setLightingEnable(true); apText.setMaterial(m); Appearance apEarth = new Appearance(); Material mm = new Material(); mm.setLightingEnable(true); apEarth.setMaterial(mm); Appearance apStone = new Appearance(); apStone.setMaterial(mm); // create 3D text Font3D f3d = new Font3D(new Font(fontName, Font.PLAIN, 2), new FontExtrusion()); Point3f textPt = new Point3f(-sl / 2.0f, 3.0f, 0.0f); Text3D txt = new Text3D(f3d, textString, textPt); OrientedShape3D textShape = new OrientedShape3D(); textShape.setGeometry(txt); textShape.setAppearance(apText); textShape.setAlignmentMode(OrientedShape3D.ROTATE_ABOUT_POINT); // text is centered around 0, 3, 0. Make it rotate around 0,5,0 Point3f rotationPt = new Point3f(0.0f, 5.0f, 0.0f); textShape.setRotationPoint(rotationPt); objScale.addChild(textShape); // also add a small Sphere at the rotation point to // show that we are rotating around the right point Sphere sphere = new Sphere(0.2f); TransformGroup sphereGroup = new TransformGroup(); Transform3D sphereXform = new Transform3D(); sphereXform.set(new Vector3f(rotationPt)); sphereGroup.setTransform(sphereXform); sphereGroup.addChild(sphere); objScale.addChild(sphereGroup); // Create a simple shape leaf node, add it to the scene graph. Transform3D cubeMat = new Transform3D(); TransformGroup cubeTrans = new TransformGroup(cubeMat); cubeMat.set(new Vector3d(0.9, 0.0, -1.0)); cubeTrans.setTransform(cubeMat); cubeTrans.addChild(new ColorCube(0.3)); objTrans.addChild(cubeTrans); TextureLoader stoneTex = new TextureLoader(stoneImage, new String("RGB"), this); if (stoneTex != null) apStone.setTexture(stoneTex.getTexture()); TextureAttributes texAttr = new TextureAttributes(); texAttr.setTextureMode(TextureAttributes.REPLACE); apStone.setTextureAttributes(texAttr); Transform3D coneMat = new Transform3D(); TransformGroup coneTrans = new TransformGroup(coneMat); coneMat.set(new Vector3d(0.0, 0.0, 0.0)); coneTrans.setTransform(coneMat); coneTrans.addChild(new Cone(.2f, 0.8f, Cone.GENERATE_NORMALS | Cone.GENERATE_TEXTURE_COORDS, apStone)); objTrans.addChild(coneTrans); TextureLoader earthTex = new TextureLoader(earthImage, new String("RGB"), this); if (earthTex != null) apEarth.setTexture(earthTex.getTexture()); apEarth.setTextureAttributes(texAttr); Transform3D cylinderMat = new Transform3D(); TransformGroup cylinderTrans = new TransformGroup(cylinderMat); cylinderMat.set(new Vector3d(-0.9, 0.5, -1.0)); cylinderTrans.setTransform(cylinderMat); cylinderTrans.addChild( new Cylinder(.35f, 2.0f, Cylinder.GENERATE_NORMALS | Cylinder.GENERATE_TEXTURE_COORDS, apEarth)); objTrans.addChild(cylinderTrans); objTrans.addChild(objScale); // Set up the background Color3f bgColor = new Color3f(0.05f, 0.05f, 0.5f); Background bgNode = new Background(bgColor); bgNode.setApplicationBounds(bounds); objRoot.addChild(bgNode); // Set up the ambient light Color3f ambientColor = new Color3f(0.1f, 0.1f, 0.1f); AmbientLight ambientLightNode = new AmbientLight(ambientColor); ambientLightNode.setInfluencingBounds(bounds); objRoot.addChild(ambientLightNode); // Set up the directional lights Color3f light1Color = new Color3f(1.0f, 1.0f, 0.9f); Vector3f light1Direction = new Vector3f(1.0f, 1.0f, 1.0f); Color3f light2Color = new Color3f(1.0f, 1.0f, 0.9f); Vector3f light2Direction = new Vector3f(-1.0f, -1.0f, -1.0f); DirectionalLight light1 = new DirectionalLight(light1Color, light1Direction); light1.setInfluencingBounds(bounds); objRoot.addChild(light1); DirectionalLight light2 = new DirectionalLight(light2Color, light2Direction); light2.setInfluencingBounds(bounds); objRoot.addChild(light2); apText.setMaterial(mm); // Have Java 3D perform optimizations on this scene graph. objRoot.compile(); return objRoot; } public OrientedPtTest() { } public OrientedPtTest(java.net.URL earthURL, java.net.URL stoneURL) { earthImage = earthURL; stoneImage = stoneURL; } public void init() { // the paths to the image files for an applet if (earthImage == null) { try { earthImage = new java.net.URL(getCodeBase().toString() + "/earth.jpg"); } catch (java.net.MalformedURLException ex) { System.out.println(ex.getMessage()); System.exit(1); } } if (stoneImage == null) { try { stoneImage = new java.net.URL(getCodeBase().toString() + "/stone.jpg"); } catch (java.net.MalformedURLException ex) { System.out.println(ex.getMessage()); System.exit(1); } } setLayout(new BorderLayout()); Canvas3D c = new Canvas3D(SimpleUniverse.getPreferredConfiguration()); add("Center", c); // Create a simple scene and attach it to the virtual universe BranchGroup scene = createSceneGraph(); u = new SimpleUniverse(c); // add mouse behaviors to the ViewingPlatform ViewingPlatform viewingPlatform = u.getViewingPlatform(); // This will move the ViewPlatform back a bit so the // objects in the scene can be viewed. u.getViewingPlatform().setNominalViewingTransform(); // add orbit behavior to the viewing platform OrbitBehavior orbit = new OrbitBehavior(c, OrbitBehavior.REVERSE_ALL); BoundingSphere bounds = new BoundingSphere(new Point3d(0.0, 0.0, 0.0), 100.0); orbit.setSchedulingBounds(bounds); viewingPlatform.setViewPlatformBehavior(orbit); u.addBranchGraph(scene); } public void destroy() { u.cleanup(); } // // The following allows OrientedPtTest to be run as an application // as well as an applet // public static void main(String[] args) { java.net.URL earthURL = null; java.net.URL stoneURL = null; try { // the paths to the image files for an application earthURL = new java.net.URL("file:earth.jpg"); stoneURL = new java.net.URL("file:stone.jpg"); } catch (java.net.MalformedURLException ex) { System.out.println(ex.getMessage()); System.exit(1); } new MainFrame(new OrientedPtTest(earthURL, stoneURL), 400, 400); } }