Hi All
i'm trying to implement one-point perspective viewing.. means that only the z-axis of
the object is intersecting the view plane. But i'm not sure how to go about it.
The object is located at the origin(0,0,0) and i need to position the view plane
(viewer) at a position where the the z-ax
Hey All,
My project is nearing the stage where I need to consider an easier form of
distribution than manually copying all files, installing Java 3D, etc...
Unfortunately, my application must load 3D data files, making the applet
option more difficult.
What is the preferred method of distributio
Hi, Haroldo,
I am sorry I can not find such samples. But I
think it is easy for you to program one using CosmosWorld Java
package.
Good luck
Chong Zhang
> Hi> > I wish that you send me samples of
java3d with vrml. Is it possible (have> virtual worlds construct in vrml
Hello Haraldo !
Here you can find a vrml-loader with examples:
http://www.vrml.org/WorkingGroups/vrml-java3d/
(right now, the server seems to be down)
And yes, it is possible to create vrml-models in Cosmoworlds and then import
them into java3d.
Sorry, do not know about the event identify th
>Sivaram,
>
>In order to run applet in ie/netscape, you need to converted html
>file using html converter and install JavaPlugin to netscape plugin
>directory.
Yes, it is correct for Windows platform, but for IRIX ?
I have been testing the Java3D aplication in a Octane with Netscape and
> > So far we are using different way to create stereo image - we are using
> > two Canvas3D with views for the left & right eye -
> > this is working, but it has one big problem - we can't sychronize
> > buffer swapping - as we would like to see synchronized buffers swapping.
> > Now when the sce
> Hi folks,
>
> Third, the compression calculation is awfully slow. On my 233 MHZ PII
> running under linux with jdk1.2.2-RC3 it takes approximately 3 minutes
> for 30 IndexedTriangleArrays (each ~2000 triangles I guess) with
> normals and per vertex colors. On a SGI octane with 300 MHZ R12000
> p
Hi,
We are considering using Java3D for visualization purposes. So fare
we have relied on using iris explorer for our visualization need
in our solutions. A common need is to visualize parameters on a surface
which when it hit the visualization is composed of triangles with parameter
values defin
Hi All,
I am trying to write a collision detection
routine. I have followed the examples in the "Ready-to-Run Java 3D" book
and also from mail archive from Tony Burrows. I have been unable to get it
to work. Whenever I try to use the collision detection routine it hangs
the process and
How can I get Daniel Selmans tree object program to allow me to see what
classes are in my VRML file?
Thanks,
Dean
- Original Message -
From: SUBSCRIBE JAVA3D-INTEREST Nazrul <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Sent: Wednesday, January 12, 2000 2:34 PM
Subject: Re: [JAVA3D] getti
Hello Mark,
thanks for your answer.
>> I want to build a server application, that sends a set of
>> IndexedTriangleArrays to an applet. To minimize the amount of data, I
>> tried to use a compressed geometry build by the
>> com.sun.j3d.utils.compression classes. But I faced a lot of problems
Thomas,
No, the trick is the way the video card supports OpenGL. It was posted
here that Java3D makes "standard" OpenGL calls.
One card that supports OpenGL in this way is E&S AccelGalaxy and
E&S Tornado(will see soon). We bought an AccelGalaxy
and it worked fine except that there were some probl
Hi,
I am loading a vrml file(only geometry)and visualising it. I used the
MouseRotate,MouseTranslate and MouseZoom classes from com.sun.j3d
package.
my probleme is that the visuel object disappears and appears again when
being rotated. the same is happening when I zoom the object.
I am suspecting
I've got a textured image of the earth in a scene. I've also drawn the
political boundaries on this map using a linestriparray. Problems arise
when I zoom on the sphere. If I don't set the front clip distance, I
start to get a black circle in the middle of the texture. However, I
can set the f
Hi - i've been having the same problem - been using a modified version of
the "jdk1.2/demo/java3d/ObjLoad" file - helps if you increase the value in
the setScale() function in the following section -
Transform3D t3d = new Transform3D();
t3d.setScale(2.7);
objScale.setTransform(t3d);
objRoo
Mohammed,
I guess it is probably a clipping plane issue rather than Bounds. Are your
models very large or very close to the viewer? Try increasing the distance
to the back clipping plane using View.setBackClipDistance. You may also have
to change the front clipping plane - keep the ratio between
I use NIMAMUSE (free at least to US citizens) to convert the DTED data to
ArcInfo Binary format. The result has the non-geometry information stripped
off, and it loads VERY quickly because it's binary. Read it in, compute
normals, stripify it, add texture coordinates if you like, and you're done
Jay,
These are the "strange rendering results" that I just told Mohammed about.
Because your front clipping plane is so near you have lost resolution in the
Z buffer and Java 3D is not distinguishing properly between the back of your
sphere and the front. Modify the distance to the back plane so
Dean,
Presumably this is related to your previous post! ;-)
I have attached a modified version of SimpleVrml97Viewer (from the Java 3D
VRML source) that not only integrates J3dTree but retrieves the name of a
VRML object when you click on it with the mouse.
The file was modified originally by J
Dean,
Set
the collidable property on the Nodes you want Java 3D to check for collisions.
Set the scheduling bounds on the Collision Behavior large enough to include all
the Nodes. Add the collision behavior to the scenegraph. Set the Node.ENABLE_COLLISION_REPORTING
capability.
I
would
hi,
i have a little vecmath-question, i hope that nobody gets bored :-|
if have a point in the space where the viewer is located...
and i have another point in the space, to whom the viewer should look.
how do i do this ?
firstly i would make the difference between these point in a
Vectorf-Object.
Try canvas.stopRenderer() when the canvas in not visible, and canvas.startRenderer()
when the user selects a new Panel.
bye..
Dani.
Janet Song wrote:
> Hi all
>
> i have done many panels with Canvas 3D on it in a CardLayout, each panel showing
>different projections which i use a PopupMenu to
I have just a simple question.
I am looking fpr javax.vecmath.*
or
javax.media.j3d.*
or
javax.accessibility
or any other javax files.
Please tell me where to find them.
> but how do i get the right rotation-values for the transform3D Object ?
Transform3D has a lookAt() method that does this... Take a look at it and
tell if this is what you meant...
JImmy
===
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Guys,
Anybody know how to get the anchors (URL) specified on
the VRML model
Thanx
Sivaram
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I have not worked with these for a while but as i understand
this, you only need to store as many color as needed, each vertice using an
index to its color, I do not see any waste there...I repeat, i may be wrong : I
have not touch this area for a while:
The only waste I can seen till now is
I am looking fpr javax.vecmath.*
or
javax.media.j3d.*
or
javax.accessibility
or any other javax files.
Please tell me where to find them.
You need to install j3d !!! see http://java.sun.com/products/java-media/3D/
these jars will be copied under your X:\jdk\jre\lib\e
I'm not sure what you're looking for.
I have classes and source I've writen/translated. However they're on my
work computer, I'm copying this to my work e-mail so I'll remember to
forward what I have to you. The classes are specific to the applications
I'm working on, and not documented very well
Some
comments:
Sparsity:
Because colors are classes you can have multiple references to the same instance
of a color in your color vertex array.
Data
values
I think you
need to use the Pick series of classes (or extensions of them) to get values
from your model. I shall be doing this s
What I'm hoping for is that I'll be able to extend java3d in such a way so that
I could create a new 'primitive' - a sphere, mathematically correct. I want to
model a spherical mirror, and it would be completely obvious if it was just a
triangle mesh, no matter how dense. I wish I had the time to
Hi,
> model a spherical mirror, and it would be completely obvious if it was just a
> triangle mesh, no matter how dense. I wish I had the time to immerse myself in
All video cards only handle triangles, so if you've ever seen a rendered
sphere that looks perfect it was because it was dense eno
Terren,
No - in as much as Java 3D only ultimately renders triangles.
I don't follow your reasoning that "it would be completely obvious if it was
just a triangle mesh, no matter how dense", though. Theoretically the mesh
could be so dense that adjacent vertices ended up being mapped to the same
Dani
Thanks..:)
bye
-Original Message-
From: Daniel del Río [SMTP:[EMAIL PROTECTED]]
Sent: Tuesday, January 18, 2000 2:58 AM
To: [EMAIL PROTECTED]
Subject:Re: [JAVA3D] Very slow on multiple panels
Try canvas.stopRenderer() when the canvas in not visible, and canvas.star
I was wondering, you say the only way to make a perfect sphere is with a
lot of trianlges. You are correct as far as having a curve being
calculated. However there is some old game engines,.. and some new ones
that are not based off of calculations at of trianlges. They use shifting
colors that
> that are not based off of calculations at of trianlges. They use shifting
> colors that are predefined to give depth or apperance of an object. Of
> course to make this more dynamic you would do trianlge and normal blah
> blah blah calculations. Just reminding it can be done without it.
Yup,
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