this was really great- wanna thank you....
Peter.
Sivaram Ghorakavi wrote:
> Hi Peter,
>
> Here is a snippet of the code which I've done on VRML
> models.
>
> If u are using on any shapes that has setUserData()
> then getUserData() on the spahe assuming this is URL
> and use the applet context to load the link in new
> browser or in the instance of the browser.
>
> Add the instance of this PickURL class to the root
> and you are set...
>
> Best of Luck
> Sivaram.
>
> --- peter <[EMAIL PROTECTED]> wrote:
> > Hi,
> > could anybody help with this...I am trying to
> > associate
> > URL links with objects - say clicking on famous
> > ColorCube :)
> > to open new link. And one step further I'd like to
> > associate
> > one link for each face of the cube - if somebody's
> > done it
> > already I would appreciate a hint - small chunk of
> > code would
> > also be helpful....
> > thank you
> > Peter.
> >
> >
> ===========================================================================
> > To unsubscribe, send email to [EMAIL PROTECTED]
> > and include in the body
> > of the message "signoff JAVA3D-INTEREST". For
> > general help, send email to
> > [EMAIL PROTECTED] and include in the body of the
> > message "help".
> >
> __________________________________________________
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>
> ------------------------------------------------------------------------
> package cyberworld.helper;
>
> // Import needed Java classes.
> import java.applet.*;
> import java.net.URL;
> import java.util.*;
> import java.lang.reflect.*;
>
> // Import the Java 3D API.
> import javax.media.j3d.*;
>
> // Import the needed Java 3D utility classes.
> import com.sun.j3d.utils.behaviors.picking.*;
> import com.sun.j3d.utils.geometry.*;
>
> import com.sun.j3d.loaders.vrml97.impl.*;
>
> /**
> * PickURL is used to associate an object that has been picked on
> * a scene with a URL link.
> *
> */
> public class PickURL extends PickMouseBehavior
> {
> protected AppletContext appletContext;
> protected PickObject pickObject = null;
>
> protected String urlString = null;
> protected URL gotoURL = null;
>
> /**
> * Creates the PickURL object.
> *
> * @param canvas The drawing surface for this applet.
> * @param root The root of the scenegraph in which picking is
> * to occur.
> * @param bounds The schedule bounding region for this behavior.
> *
> */
> public PickURL( Canvas3D canvas,
> BranchGroup root,
> Bounds bounds,
> AppletContext context )
> {
> // Pass needed info to parent.
> super(canvas, root, bounds);
>
> pickObject = new PickObject( canvas, root );
>
> setCapability( ALLOW_PICKABLE_READ |
> ALLOW_PICKABLE_WRITE |
> ALLOW_BOUNDS_READ |
> ALLOW_BOUNDS_WRITE );
>
> // Pass URL information
> appletContext = context;
> }
>
> /**
> * Callback called when a pick event has been detected.
> * The specific Switch node child is determined and its URL.
> *
> * @param xPos Current mouse X position.
> * @param yPos Current mouse Y position.
> */
> public void updateScene(int xPos, int yPos)
> {
> Logger.log("PickURL coordinates: x = "+xPos+", y = "+yPos);
>
> // will set any urlString at this position
> mouseClicked( xPos, yPos );
> if ( urlString != null )
> {
> try{
> gotoURL = new URL( urlString );
> }
> catch( Exception e ){
> Logger.log( e );
> gotoURL = null;
> }
> }
> if ( gotoURL != null )
> {
> // Cause the browser to load the referenced URL
> // This applet only has a single URL passed, but could
> // support an entire list that is associated with
> // the Java 3D object picked.
> if (gotoURL != null)
> appletContext.showDocument(gotoURL,"_blank");
> }
> }
> private void mouseClicked(int xPos, int yPos)
> {
> javax.media.j3d.Node node = null;
> Object vs = null;
> Vector sv = (Vector)null;
>
> urlString = null;
> gotoURL = null;
>
> vs = null;
> sv = null;
> node = null;
> SceneGraphPath path =
>pickObject.pickClosest(xPos,yPos,PickObject.USE_BOUNDS);
> if ( path != null )
> {
> for ( int i = 0; i < path.nodeCount(); i++ )
> {
> // Logger.log("Object index = "+i);
> node = path.getNode(i);
> Object o = node.getUserData();
> // Logger.log("User Data = "+o);
> if( o instanceof Vector && !((Vector)o).isEmpty() )
> {
> // save the bottom most to preserve nesting
> // note, the userData should be a vector
> // of sensors for this group.
> sv = (Vector)o;
> // rare case
> }
> else if ( o instanceof SphereSensor )
> {
> sv = new Vector();
> sv.addElement(o);
> node.setUserData(sv);
> }
> }
> if ( sv != null )
> {
> Enumeration e = sv.elements();
> while( e.hasMoreElements() )
> {
> vs = (Object)e.nextElement();
> if (vs instanceof Anchor)
> {
> MFString mfURL =
>(MFString)(((Anchor)vs).getField("url"));
> if ( mfURL != null )
> {
> urlString = mfURL.get1Value(0);
> Logger.log("URL = "+urlString);
> }
> }
> }
> }
> }
>
> /*****
> path = pickObject.pickAllSorted( xPos, yPos );
> if ( path != null )
> {
> // Logger.log("SceneGraphPath.length = "+path.length);
> for ( int i = 0; i < path.length; i++ )
> {
> vs = null;
> sv = null;
> node = null;
>
> // Logger.log("Picked Object = "+path[i]);
> for ( int j = 0; j < path[i].nodeCount(); j++ )
> {
> // Logger.log("Object index = "+i);
> node = path[i].getNode(j);
> Object o = node.getUserData();
> // Logger.log("User Data = "+o);
> if( o instanceof Vector &&
>!((Vector)o).isEmpty() )
> {
> // save the bottom most to preserve
>nesting
> // note, the userData should be a
>vector
> // of sensors for this group.
> sv = (Vector)o;
> // rare case
> }
> else if ( o instanceof SphereSensor )
> {
> sv = new Vector();
> sv.addElement(o);
> node.setUserData(sv);
> }
> }
> }
>
> if ( sv != null )
> {
> Enumeration e = sv.elements();
> while( e.hasMoreElements() )
> {
> vs = (Object)e.nextElement();
> if (vs instanceof Anchor)
> {
> MFString mfURL =
>(MFString)(((Anchor)vs).getField("url"));
> if ( mfURL != null )
> {
> urlString = mfURL.get1Value(0);
> Logger.log("URL = "+urlString);
> }
> }
> }
> }
> }
> *****/
> }
> }
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