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Diffstat (limited to 'src/Lightwave/Viewer.java')
| -rw-r--r-- | src/Lightwave/Viewer.java | 207 |
1 files changed, 207 insertions, 0 deletions
diff --git a/src/Lightwave/Viewer.java b/src/Lightwave/Viewer.java new file mode 100644 index 0000000..30ad58d --- /dev/null +++ b/src/Lightwave/Viewer.java @@ -0,0 +1,207 @@ +/* + * $RCSfile$ + * + * Copyright (c) 2004 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: + * + * - Redistribution 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 MICROSYSTEMS, INC. ("SUN") AND ITS LICENSORS SHALL + * NOT BE LIABLE FOR ANY DAMAGES SUFFERED BY LICENSEE AS A RESULT OF + * USING, MODIFYING OR DISTRIBUTING THIS 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 THIS SOFTWARE, EVEN IF SUN HAS BEEN ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGES. + * + * You acknowledge that this software is not designed, licensed or + * intended for use in the design, construction, operation or + * maintenance of any nuclear facility. + * + * $Revision$ + * $Date$ + * $State$ + */ + +import java.applet.Applet; +import java.awt.*; + +import javax.media.j3d.BranchGroup; +import javax.media.j3d.Canvas3D; +import javax.media.j3d.Transform3D; +import javax.media.j3d.TransformGroup; +import javax.media.j3d.View; +import javax.vecmath.Matrix4d; + +import com.sun.j3d.loaders.lw3d.Lw3dLoader; +import com.sun.j3d.loaders.Loader; +import com.sun.j3d.loaders.Scene; +import com.sun.j3d.utils.applet.MainFrame; +import com.sun.j3d.utils.universe.SimpleUniverse; + + +/** + * This class loads in a Lightwave3D file and displays it in an applet + * window. The application is fairly basic; a more complete version + * of a Lightwave 3D loader might incorporate features such as + * settable clip plane distances and animated views (these are both + * possible with the current Lightwave 3D loader, they just need to + * be implemented in the application). + */ +public class Viewer extends Applet { + + private java.net.URL filename; + private SimpleUniverse u; + + public Viewer(java.net.URL url) { + filename = url; + } + + public Viewer() {} + + public void init() { + if (filename == null) { + // the path to the file for an applet + try { + java.net.URL path = getCodeBase(); + filename = new java.net.URL(path.toString() + + "./ballcone.lws"); + } + catch (java.net.MalformedURLException ex) { + System.err.println(ex.getMessage()); + ex.printStackTrace(); + System.exit(1); + } + } + + // Construct the Lw3d loader and load the file + Loader lw3dLoader = new Lw3dLoader(Loader.LOAD_ALL); + Scene loaderScene = null; + try { + loaderScene = lw3dLoader.load(filename); + } + catch (Exception e) { + e.printStackTrace(); + System.exit(1); + } + + // Construct the applet canvas + setLayout(new BorderLayout()); + GraphicsConfiguration config = + SimpleUniverse.getPreferredConfiguration(); + + Canvas3D c = new Canvas3D(config); + add("Center", c); + + // Create a basic universe setup and the root of our scene + u = new SimpleUniverse(c); + BranchGroup sceneRoot = new BranchGroup(); + + // Change the back clip distance; the default is small for + // some lw3d worlds + View theView = u.getViewer().getView(); + theView.setBackClipDistance(50000f); + + // Now add the scene graph defined in the lw3d file + if (loaderScene.getSceneGroup() != null) { + // Instead of using the default view location (which may be + // completely bogus for the particular file you're loading), + // let's use the initial view from the file. We can get + // this by getting the view groups from the scene (there's + // only one for Lightwave 3D), then using the inverse of the + // transform on that view as the transform for the entire scene. + + // First, get the view groups (shouldn't be null unless there + // was something wrong in the load + TransformGroup viewGroups[] = loaderScene.getViewGroups(); + + // Get the Transform3D from the view and invert it + Transform3D t = new Transform3D(); + viewGroups[0].getTransform(t); + Matrix4d m = new Matrix4d(); + t.get(m); + m.invert(); + t.set(m); + + // Now we've got the transform we want. Create an + // appropriate TransformGroup and parent the scene to it. + // Then insert the new group into the main BranchGroup. + TransformGroup sceneTransform = new TransformGroup(t); + sceneTransform.addChild(loaderScene.getSceneGroup()); + sceneRoot.addChild(sceneTransform); + } + + // Make the scene graph live by inserting the root into the universe + u.addBranchGraph(sceneRoot); + } + + + public void destroy() { + u.cleanup(); + } + + /** + * The main method of the application takes one argument in the + * args array; the filname that you want to load. Note that the + * file must be reachable from the directory in which you're running + * this application. + */ + public static void main(String args[]) { + java.net.URL url = null; + java.net.URL pathUrl = null; + if (args.length > 0) { + try { + if ((args[0].indexOf("file:") == 0) || + (args[0].indexOf("http") == 0)) { + url = new java.net.URL(args[0]); + } + else if (args[0].charAt(0) != '/') { + url = new java.net.URL("file:./" + args[0]); + } + else { + url = new java.net.URL("file:" + args[0]); + } + } + catch (java.net.MalformedURLException ex) { + System.err.println(ex.getMessage()); + ex.printStackTrace(); + System.exit(1); + } + } + else { + // the path to the image for an application + try { + url = new java.net.URL("file:./ballcone.lws"); + } + catch (java.net.MalformedURLException ex) { + System.err.println(ex.getMessage()); + ex.printStackTrace(); + System.exit(1); + } + } + new MainFrame(new Viewer(url), 500, 500); + } +} + + + + |