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+/*
+ * $RCSfile$
+ *
+ * Copyright (c) 2005 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 com.sun.j3d.loaders.objectfile.ObjectFile;
+import com.sun.j3d.loaders.ParsingErrorException;
+import com.sun.j3d.loaders.IncorrectFormatException;
+import com.sun.j3d.loaders.Scene;
+import com.sun.j3d.utils.shader.StringIO;
+import java.applet.Applet;
+import java.awt.*;
+import java.awt.event.*;
+import com.sun.j3d.utils.applet.MainFrame;
+import com.sun.j3d.utils.universe.*;
+import javax.media.j3d.*;
+import javax.vecmath.*;
+import java.util.Enumeration;
+import java.io.*;
+import com.sun.j3d.utils.behaviors.vp.*;
+import java.net.URL;
+import java.net.MalformedURLException;
+
+public class ObjLoadCg extends Applet {
+
+ private boolean spin = false;
+ private boolean noTriangulate = false;
+ private boolean noStripify = false;
+ private double creaseAngle = 60.0;
+ private URL filename = null;
+ private SimpleUniverse u;
+ private BoundingSphere bounds;
+
+ public BranchGroup createSceneGraph() {
+ // Create the root of the branch graph
+ BranchGroup objRoot = new BranchGroup();
+
+ // Create a Transformgroup to scale all objects so they
+ // appear in the scene.
+ TransformGroup objScale = new TransformGroup();
+ Transform3D t3d = new Transform3D();
+ t3d.setScale(0.7);
+ objScale.setTransform(t3d);
+ objRoot.addChild(objScale);
+
+ // 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);
+ objScale.addChild(objTrans);
+
+ int flags = ObjectFile.RESIZE;
+ if (!noTriangulate) flags |= ObjectFile.TRIANGULATE;
+ if (!noStripify) flags |= ObjectFile.STRIPIFY;
+ ObjectFile f = new ObjectFile(flags,
+ (float)(creaseAngle * Math.PI / 180.0));
+ Scene s = null;
+ try {
+ s = f.load(filename);
+ }
+ catch (FileNotFoundException e) {
+ e.printStackTrace();
+ System.exit(1);
+ }
+ catch (ParsingErrorException e) {
+ e.printStackTrace();
+ System.exit(1);
+ }
+ catch (IncorrectFormatException e) {
+ e.printStackTrace();
+ System.exit(1);
+ }
+
+ // Set vertex and fragment shader program for all Shape3D nodes in scene
+ String vertexProgram = null;
+ String fragmentProgram = null;
+ try {
+ vertexProgram = StringIO.readFully("./simple_vp.cg");
+ fragmentProgram = StringIO.readFully("./simple_fp.cg");
+ }
+ catch (IOException e) {
+ e.printStackTrace();
+ System.exit(1);
+ }
+ CgVertexShader vertexShader = new CgVertexShader(vertexProgram);
+ CgFragmentShader fragmentShader = new CgFragmentShader(fragmentProgram);
+ CgShaderProgram shaderProgram = new CgShaderProgram();
+ shaderProgram.setVertexShader(vertexShader);
+ shaderProgram.setFragmentShader(fragmentShader);
+ setShaderProgram(s.getSceneGroup(), shaderProgram);
+
+ objTrans.addChild(s.getSceneGroup());
+
+ bounds = new BoundingSphere(new Point3d(0.0,0.0,0.0), 100.0);
+
+ if (spin) {
+ Transform3D yAxis = new Transform3D();
+ Alpha rotationAlpha = new Alpha(-1, Alpha.INCREASING_ENABLE,
+ 0, 0,
+ 4000, 0, 0,
+ 0, 0, 0);
+
+ RotationInterpolator rotator =
+ new RotationInterpolator(rotationAlpha, objTrans, yAxis,
+ 0.0f, (float) Math.PI*2.0f);
+ rotator.setSchedulingBounds(bounds);
+ objTrans.addChild(rotator);
+ }
+
+ // 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);
+
+ return objRoot;
+ }
+
+ private void usage()
+ {
+ System.out.println(
+ "Usage: java ObjLoadCg [-s] [-n] [-t] [-c degrees] <.obj file>");
+ System.out.println(" -s Spin (no user interaction)");
+ System.out.println(" -n No triangulation");
+ System.out.println(" -t No stripification");
+ System.out.println(
+ " -c Set crease angle for normal generation (default is 60 without");
+ System.out.println(
+ " smoothing group info, otherwise 180 within smoothing groups)");
+ System.exit(0);
+ } // End of usage
+
+
+
+ public void init() {
+ if (filename == null) {
+ // Applet
+ try {
+ URL path = getCodeBase();
+ filename = new URL(path.toString() + "./galleon.obj");
+ }
+ catch (MalformedURLException e) {
+ System.err.println(e);
+ System.exit(1);
+ }
+ }
+
+ setLayout(new BorderLayout());
+ GraphicsConfiguration config =
+ SimpleUniverse.getPreferredConfiguration();
+
+ Canvas3D c = new Canvas3D(config);
+ 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();
+
+ PlatformGeometry pg = new PlatformGeometry();
+
+ // Set up the ambient light
+ Color3f ambientColor = new Color3f(0.1f, 0.1f, 0.1f);
+ AmbientLight ambientLightNode = new AmbientLight(ambientColor);
+ ambientLightNode.setInfluencingBounds(bounds);
+ pg.addChild(ambientLightNode);
+
+ // Set up the directional lights
+ Color3f light1Color = new Color3f(1.0f, 0.2f, 0.4f);
+ 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);
+ pg.addChild(light1);
+
+ DirectionalLight light2
+ = new DirectionalLight(light2Color, light2Direction);
+ light2.setInfluencingBounds(bounds);
+ pg.addChild(light2);
+
+ viewingPlatform.setPlatformGeometry( pg );
+
+ // This will move the ViewPlatform back a bit so the
+ // objects in the scene can be viewed.
+ viewingPlatform.setNominalViewingTransform();
+
+ if (!spin) {
+ 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);
+ }
+
+ /*
+ // Limit the frame rate to 100 Hz
+ u.getViewer().getView().setMinimumFrameCycleTime(10);
+ */
+
+ u.addBranchGraph(scene);
+ }
+
+ // Set shader program for all nodes in specified branch graph
+ private void setShaderProgram(BranchGroup g, ShaderProgram shaderProgram) {
+ ShaderAppearance myApp = new ShaderAppearance();
+ Material mat = new Material();
+ Texture2D tex2d = new Texture2D();
+ myApp.setCapability(Appearance.ALLOW_TEXTURE_WRITE);
+ myApp.setShaderProgram(shaderProgram);
+ myApp.setMaterial(mat);
+ myApp.setTexture(tex2d);
+ setShaderProgram(g, myApp);
+ }
+
+ // Recursively set shader program for all children of specified group
+ private void setShaderProgram(Group g,
+ ShaderAppearance myApp) {
+
+ Enumeration e = g.getAllChildren();
+ while (e.hasMoreElements()) {
+ Node n = (Node)(e.nextElement());
+ if (n instanceof Group) {
+ setShaderProgram((Group)n, myApp);
+ }
+ else if (n instanceof Shape3D) {
+ Shape3D s = (Shape3D)n;
+ s.setAppearance(myApp);
+ }
+ }
+ }
+
+ // Caled if running as a program
+ public ObjLoadCg(String[] args) {
+ if (args.length != 0) {
+ for (int i = 0 ; i < args.length ; i++) {
+ if (args[i].startsWith("-")) {
+ if (args[i].equals("-s")) {
+ spin = true;
+ } else if (args[i].equals("-n")) {
+ noTriangulate = true;
+ } else if (args[i].equals("-t")) {
+ noStripify = true;
+ } else if (args[i].equals("-c")) {
+ if (i < args.length - 1) {
+ creaseAngle = (new Double(args[++i])).doubleValue();
+ } else usage();
+ } else {
+ usage();
+ }
+ } else {
+ try {
+ if ((args[i].indexOf("file:") == 0) ||
+ (args[i].indexOf("http") == 0)) {
+ filename = new URL(args[i]);
+ }
+ else if (args[i].charAt(0) != '/') {
+ filename = new URL("file:./" + args[i]);
+ }
+ else {
+ filename = new URL("file:" + args[i]);
+ }
+ }
+ catch (MalformedURLException e) {
+ System.err.println(e);
+ System.exit(1);
+ }
+ }
+ }
+ }
+ }
+
+
+
+ // Running as an applet
+ public ObjLoadCg() {
+ }
+
+ public void destroy() {
+ u.cleanup();
+ }
+
+
+
+ //
+ // The following allows ObjLoadCg to be run as an application
+ // as well as an applet
+ //
+ public static void main(String[] args) {
+ new MainFrame(new ObjLoadCg(args), 700, 700);
+ }
+}
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