Hello People,
I recieved a couple of requests for the class, but I deleted the
mails(!#) so I am posting it here instead.
It is very simple. The eye separation distances are not calculated,
but the values I chose work so I havent fixed them!
The only method at the moment is
getStereoLocale(Locale);
and returns the locale object of the ViewBranch.
You will need to add a root branch group to the locale to see
anything....
Two frames are created, leftview and rightview, in the centre of the
screen. The stereogram should be viewed with the 'Cross-eyed' method
rather than the 'Focus Behind' method.
To use the 'Focus Behind' method swap the frame canvasses around.
(IE, add leftcanvas to left frame, right canvas to right frame,
rather that left to right - right to left, you'll get it, the code is
simple)
I am aware that maybe I should have extended the VirtualUniverse
class, but my Java isnt that good yet...... (Java3D is what has
finally got me to learn Java), I know that I could probably combine
some of my code into single instructions, but I'm learning Java at
the same time as Java3D, with no books, just the API's and
tutorials!! so I have to keep things step by step :) (I create good
example / learning code though!!)
It creates the following view branch structure,
VirtualUniverse
|
Locale
|
BranchGroup--------:
| |
TransformGroup Transformgroup
| |
ViewPlatformleft ViewPlatformright
| |
leftview Rightview
| |
leftcanvas rightcanvas
I am wondering if there is a simpler way of acomplishing the above
branchgraph?
Anyway, look at the code, its very simple and should be easy to
improve however you like. It's just a basic framework really.
I have a demo that will actually put things in the frames for you to
look at, just mail me for it. (I wont delete it, I promise).. You too
can have (Holographic? real-3d) images floating out of your computer
screen :)
Matthew Warren.
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Get Your Private, Free Email at http://www.hotmail.com
import java.awt.*;
import java.awt.event.*;
import javax.media.j3d.*;
import javax.vecmath.*;
import com.sun.j3d.utils.geometry.*;
import com.sun.j3d.utils.universe.*;
public class StereoUniverse extends Object{
public Locale locale;
StereoUniverse()
{
Frame leftframe = new Frame("Leftframe");
Frame rightframe = new Frame("Rightframe");
//Setup Frames
leftframe.setSize(200,200);
rightframe.setSize(200,200);
leftframe.setBackground(Color.blue);
rightframe.setBackground(Color.blue);
leftframe.setLocation(312,284);
rightframe.setLocation(512,284);
leftframe.setVisible(true);
rightframe.setVisible(true);
//Create Canvases
Canvas3D leftcanvas = new Canvas3D(null);
leftcanvas.setBackground(Color.blue);
leftcanvas.setVisible(true);
Canvas3D rightcanvas = new Canvas3D(null);
rightcanvas.setBackground(Color.blue);
rightcanvas.setVisible(true);
//Add Canvases to frame
leftframe.add("Center",rightcanvas);
rightframe.add("Center",leftcanvas);
VirtualUniverse universe = new VirtualUniverse();
locale = new Locale(universe);
BranchGroup viewbranchgroup = new BranchGroup();
Transform3D moveleftviewplatform = new Transform3D();
Transform3D moverightviewplatform = new Transform3D();
Vector3f leftvector = new Vector3f(-0.2f,0.0f,3.0f);
Vector3f rightvector = new Vector3f(0.2f,0.0f,3.0f);
moveleftviewplatform.setTranslation(leftvector);
moverightviewplatform.setTranslation(rightvector);
TransformGroup leftviewtransgroup = new
TransformGroup(moveleftviewplatform);
TransformGroup rightviewtransgroup = new
TransformGroup(moverightviewplatform);
ViewPlatform leftviewplatform = new ViewPlatform();
ViewPlatform rightviewplatform = new ViewPlatform();
View leftview = new View();
View rightview = new View();
leftview.setPhysicalBody(new PhysicalBody());
rightview.setPhysicalBody(new PhysicalBody());
leftview.setPhysicalEnvironment(new PhysicalEnvironment());
rightview.setPhysicalEnvironment(new PhysicalEnvironment());
leftview.addCanvas3D(leftcanvas);
rightview.addCanvas3D(rightcanvas);
//now connect the whole lot together
viewbranchgroup.addChild(leftviewtransgroup);
viewbranchgroup.addChild(rightviewtransgroup);
leftviewtransgroup.addChild(leftviewplatform);
rightviewtransgroup.addChild(rightviewplatform);
leftview.attachViewPlatform(leftviewplatform);
rightview.attachViewPlatform(rightviewplatform);
//Compile the viewbranchgraph
viewbranchgroup.compile();
//Make viewbranchgroup live
locale.addBranchGraph(viewbranchgroup);
}
public Locale getStereoLocale()
{
return this.locale;
}
}
