/***************************************************************************** * Web3d.org Copyright (c) 2001 * Java Source * * This source is licensed under the GNU LGPL v2.1 * Please read http://www.gnu.org/copyleft/lgpl.html for more information * * This software comes with the standard NO WARRANTY disclaimer for any * purpose. Use it at your own risk. If there's a problem you get to fix it. * ****************************************************************************/ // Standard imports import java.io.*; import java.awt.*; import java.awt.event.*; import javax.media.j3d.*; import javax.vecmath.*; import javax.swing.*; import java.net.URL; import java.net.MalformedURLException; // Application specific imports import com.sun.j3d.utils.universe.*; import com.sun.j3d.utils.behaviors.mouse.MouseRotate; import com.sun.j3d.utils.behaviors.mouse.MouseZoom; import com.sun.j3d.utils.behaviors.mouse.MouseTranslate; import com.sun.j3d.loaders.Scene; import org.ietf.uri.ContentHandlerFactory; import org.ietf.uri.FileNameMap; import org.ietf.uri.URI; import org.web3d.j3d.loaders.VRML97Loader; import org.web3d.net.content.VRMLContentHandlerFactory; import org.web3d.net.content.VRMLFileNameMap; import org.web3d.util.UtilCanvas3D; /** * An example of how to use the Java3D loader interface with the Xj3D codebase. * * @author Alan Hudson * @version $Revision: 1.1 $ */ public class LoaderDemo extends JFrame { /** The J3D universe to hold everything */ private SimpleUniverse universe; /** A canvas that can display timing information */ private UtilCanvas3D canvas; /** The whole scenegraph's root */ private BranchGroup sceneRoot; /** A transform for examine navigation style */ private TransformGroup examineGroup; /* A group to hold the loaded scene */ private BranchGroup sceneGroup; /* A transform for the viewer position */ private TransformGroup vpTransGroup; // User interface variables /** A label for the URL field */ private Label urlLabel; /** * Create a new loader * * @param initLocation The world to load */ public LoaderDemo() { super("VRML97 Loader demo"); Container content_pane = getContentPane(); content_pane.setLayout(new BorderLayout()); GraphicsConfigTemplate3D template = new GraphicsConfigTemplate3D(); template.setDoubleBuffer(template.REQUIRED); GraphicsEnvironment env = GraphicsEnvironment.getLocalGraphicsEnvironment(); GraphicsDevice dev = env.getDefaultScreenDevice(); GraphicsConfiguration gfxConfig = dev.getBestConfiguration(template); Canvas3D canvas = new UtilCanvas3D(gfxConfig, false); content_pane.add("Center",canvas); urlLabel = new Label("File:"); content_pane.add("North",urlLabel); universe = new SimpleUniverse(canvas); universe.setJ3DThreadPriority(Thread.NORM_PRIORITY); ViewingPlatform viewingPlatform = universe.getViewingPlatform(); vpTransGroup = viewingPlatform.getViewPlatformTransform(); Viewer viewer = universe.getViewer(); View view = viewer.getView(); // TODO: Decide a real value for this. Can't be infinite because // front/back ratio decides z precision view.setBackClipDistance(1000); setupNavigation(); setSize(800, 600); setLocation(0, 40); setVisible(true); } //---------------------------------------------------------- // Methods local to loader //---------------------------------------------------------- /** * Setup the navigation system. We use a simple examine behavior */ private void setupNavigation() { sceneRoot = new BranchGroup(); sceneRoot.setCapability(TransformGroup.ALLOW_CHILDREN_EXTEND); examineGroup = new TransformGroup(); examineGroup.setCapability(TransformGroup.ALLOW_CHILDREN_EXTEND); examineGroup.setCapability(TransformGroup.ALLOW_CHILDREN_READ); examineGroup.setCapability(TransformGroup.ALLOW_CHILDREN_WRITE); examineGroup.setCapability(TransformGroup.ALLOW_TRANSFORM_READ); examineGroup.setCapability(TransformGroup.ALLOW_TRANSFORM_WRITE); examineGroup.setCapability(TransformGroup.ALLOW_LOCAL_TO_VWORLD_READ); sceneRoot.addChild(examineGroup); BoundingSphere behaviorBounds = new BoundingSphere(new Point3d(), Double.MAX_VALUE); MouseRotate mr = new MouseRotate(); mr.setTransformGroup(examineGroup); mr.setSchedulingBounds(behaviorBounds); sceneRoot.addChild(mr); MouseTranslate mt = new MouseTranslate(); mt.setTransformGroup(examineGroup); mt.setSchedulingBounds(behaviorBounds); sceneRoot.addChild(mt); MouseZoom mz = new MouseZoom(); mz.setTransformGroup(examineGroup); mz.setSchedulingBounds(behaviorBounds); sceneRoot.addChild(mz); universe.addBranchGraph(sceneRoot); } /** * Load the given file into the scene. * * @param filename The name of the file or the URL to load */ private void loadFile(String file) { VRML97Loader loader = new VRML97Loader(VRML97Loader.LOAD_ALL); // if the file is a directory, ignore it File f = new File(file); if(f.exists() && !f.isFile()) { System.out.println("Can't load directories specified"); System.exit(1); } URL url = null; Scene scene = null; try { url = new URL(file); } catch (MalformedURLException badUrl) { // if the location is not a URL, this is what you get } try { if(url != null) scene = loader.load(url); else scene = loader.load(file); } catch(Exception e) { System.out.println("Exception loading URL:" + e); e.printStackTrace(); System.exit(0); } urlLabel.setText("File " + file); if (scene != null) { // get the scene group sceneGroup = scene.getSceneGroup(); sceneGroup.setCapability(BranchGroup.ALLOW_DETACH); sceneGroup.setCapability(BranchGroup.ALLOW_BOUNDS_READ); sceneGroup.compile(); TransformGroup[] vps = scene.getViewGroups(); // add the scene group to the scene examineGroup.addChild(sceneGroup); // now that the scene group is "live" we can inquire the bounds setViewpoint(); setupLighting(scene); } } /** * Setup the scene's view */ private void setViewpoint() { Transform3D viewTrans = new Transform3D(); Transform3D eyeTrans = new Transform3D(); // put the View at the standard VRML default position 0,0,10 Vector3f pos = new Vector3f(0,0,10); eyeTrans.set(pos); viewTrans.mul(eyeTrans); // set the view transform vpTransGroup.setTransform(viewTrans); } /** * Setup the worlds lighting. If none is provided in the VRML file then * we create a simple headlight * * @param scene The scene to source the lights from */ private void setupLighting(Scene scene) { Light lights[] = scene.getLightNodes(); if (lights == null) { System.out.println("Null lights"); BranchGroup lightBG = new BranchGroup(); BoundingSphere lightBounds = new BoundingSphere(new Point3d(), Double.MAX_VALUE); DirectionalLight headLight = new DirectionalLight(new Color3f(1.0f,1.0f,1.0f), new Vector3f(0,0,-1)); headLight.setCapability(Light.ALLOW_STATE_WRITE); headLight.setInfluencingBounds(lightBounds); lightBG.addChild(headLight); sceneRoot.addChild(lightBG); } } /** * A main body for running as an application * * @param args The arugment array */ public static void main(String[] args) { LoaderDemo demo = new LoaderDemo(); demo.loadFile("C:\\test.wrl"); } }