import ncsa.j3d.loaders.*;
// 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 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.io.*;
import com.sun.j3d.utils.behaviors.mouse.*;

public class DXFLoad extends Applet {

    private boolean spin = false;
    private boolean noTriangulate = false;
    private boolean noStripify = false;
    private double creaseAngle = 60.0;
    private String filename = null;

    public BranchGroup createSceneGraph(String args[]) {
		// 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;





		ModelLoader f = new ModelLoader();
		//Loader_DXF f = new Loader_DXF();
		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);
		} else {
		  // Create the rotate behavior node
		  MouseRotate behavior = new MouseRotate();
		  behavior.setTransformGroup(objTrans);
		  objTrans.addChild(behavior);
		  behavior.setSchedulingBounds(bounds);

		  // Create the zoom behavior node
		  MouseZoom behavior2 = new MouseZoom();
		  behavior2.setTransformGroup(objTrans);
		  objTrans.addChild(behavior2);
		  behavior2.setSchedulingBounds(bounds);

		  // Create the translate behavior node
		  MouseTranslate behavior3 = new MouseTranslate();
		  behavior3.setTransformGroup(objTrans);
		  objTrans.addChild(behavior3);
		  behavior3.setSchedulingBounds(bounds);
		}

      // 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(4.0f, -7.0f, -12.0f);
      Color3f light2Color = new Color3f(0.3f, 0.3f, 0.4f);
      Vector3f light2Direction  = new Vector3f(-6.0f, -2.0f, -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 DXFLoad [-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 DXFLoad(String args[]) {
	if (args.length == 0) {
	  usage();
	} else {
	  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 {
		System.err.println("Argument '" + args[i] + "' ignored.");
	      }
	    } else {
	      filename = args[i];
	    }
	  }
	}

	if (filename == null) {
	  usage();
	}

	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(args);
	SimpleUniverse u = new SimpleUniverse(c);
        // This will move the ViewPlatform back a bit so the
        // objects in the scene can be viewed.
        u.getViewingPlatform().setNominalViewingTransform();
	u.addBranchGraph(scene);
}



//
// The following allows ObjLoad to be run as an application
// as well as an applet
//
public static void main(String[] args) {
	new MainFrame(new DXFLoad(args), 700, 700);
}


}