Object File Loader : Object VRML File « 3D « Java





Object File Loader

Object File Loader
/*
 * @(#)ConfigObjLoad.java 1.3 02/04/01 15:04:14
 * 
 * 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.awt.event.KeyAdapter;
import java.awt.event.KeyEvent;
import java.io.FileNotFoundException;
import java.net.MalformedURLException;
import java.net.URL;
import java.util.Map;

import javax.media.j3d.Alpha;
import javax.media.j3d.AmbientLight;
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.RotationInterpolator;
import javax.media.j3d.Sensor;
import javax.media.j3d.Transform3D;
import javax.media.j3d.TransformGroup;
import javax.vecmath.Color3f;
import javax.vecmath.Point3d;
import javax.vecmath.Vector3f;

import com.sun.j3d.loaders.IncorrectFormatException;
import com.sun.j3d.loaders.ParsingErrorException;
import com.sun.j3d.loaders.Scene;
import com.sun.j3d.loaders.objectfile.ObjectFile;
import com.sun.j3d.utils.behaviors.sensor.Mouse6DPointerBehavior;
import com.sun.j3d.utils.behaviors.vp.OrbitBehavior;
import com.sun.j3d.utils.universe.ConfiguredUniverse;
import com.sun.j3d.utils.universe.ViewingPlatform;

public class ConfigObjLoad {

  private boolean spin = false;

  private boolean noTriangulate = false;

  private boolean noStripify = false;

  private double creaseAngle = 60.0;

  private URL filename = null;

  private ConfiguredUniverse u;

  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) {
      System.err.println(e);
      System.exit(1);
    } catch (ParsingErrorException e) {
      System.err.println(e);
      System.exit(1);
    } catch (IncorrectFormatException e) {
      System.err.println(e);
      System.exit(1);
    }

    objTrans.addChild(s.getSceneGroup());

    BoundingSphere 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);

    // 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, 1.0f);
    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);

    return objRoot;
  }

  private void usage() {
    System.out
        .println("Usage: java ObjLoad [-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) {
      try {
        filename = new URL("file:galleon.obj");
      } catch (MalformedURLException e) {
        System.err.println(e);
        System.exit(1);
      }
    }

    // Get the config file URL from the j3d.configURL property or use the
    // default config file "j3d1x1-window" in the current directory.
    URL configURL = ConfiguredUniverse.getConfigURL("file:j3d1x1-window");

    // Create a simple scene and attach it to the virtual universe
    BranchGroup scene = createSceneGraph();
    u = new ConfiguredUniverse(configURL);

    // Get the ViewingPlatform.
    ViewingPlatform viewingPlatform = u.getViewingPlatform();

    // This will move the ViewPlatform back a bit so the objects in the
    // scene can be viewed. This will only have an effect if the config
    // file sets the window eyepoint policy to something other than
    // RELATIVE_TO_COEXISTENCE, which is the default eyepoint policy
    // applied by ConfiguredUniverse.
    // 
    // The default view attach policy for ConfiguredUniverse applications
    // is NOMINAL_SCREEN. This sets the view platform origin in the
    // physical world to the center of coexistence, which allows eye
    // positions expressed relative to coexistence to see the appropriate
    // field of view automatically.
    viewingPlatform.setNominalViewingTransform();

    // Add a ViewPlatformBehavior if not specified in the config file.
    if (!spin && viewingPlatform.getViewPlatformBehavior() == null) {
      OrbitBehavior orbit = new OrbitBehavior(u.getCanvas(),
          OrbitBehavior.REVERSE_ALL);
      BoundingSphere bounds = new BoundingSphere(new Point3d(0.0, 0.0,
          0.0), 100.0);

      orbit.setSchedulingBounds(bounds);
      viewingPlatform.setViewPlatformBehavior(orbit);
    }

    // See if there's a 6 degree of freedom mouse in the environment.
    // We look for one named "mouse6d".
    Map sensorMap = null;
    sensorMap = u.getNamedSensors();
    if (sensorMap != null) {
      Sensor mouse6d = (Sensor) sensorMap.get("mouse6d");
      if (mouse6d != null) {
        Mouse6DPointerBehavior behavior = new Mouse6DPointerBehavior(
            mouse6d, 1.0, true);

        BoundingSphere bounds = new BoundingSphere(new Point3d(0.0,
            0.0, 0.0), 100.0);
        behavior.setSchedulingBounds(bounds);

        scene.addChild(behavior);
        scene.addChild(behavior.getEcho());
      }
    }

    // Listen for a typed "q", "Q", or "Escape" key on each canvas to
    // allow a convenient exit from full screen configurations.
    Canvas3D[] canvases;
    canvases = u.getViewer().getCanvas3Ds();

    class QuitListener extends KeyAdapter {
      public void keyTyped(KeyEvent e) {
        char c = e.getKeyChar();
        if (c == 'q' || c == 'Q' || c == 27)
          System.exit(0);
      }
    }

    QuitListener quitListener = new QuitListener();
    for (int i = 0; i < canvases.length; i++)
      canvases[i].addKeyListener(quitListener);

    // Make the scenegraph live.
    u.addBranchGraph(scene);
  }

  public ConfigObjLoad(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);
          }
        }
      }
    }
    init();
  }

  public static void main(String[] args) {
    new ConfigObjLoad(args);
  }
}

           
       










ConfiguredUniverse.zip( 38 k)

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