I keep getting the following error:
"Exception in thread "main" java.awt.AWTError: BoxLayout can't be shared"
I've looked all over the doc but can't find any information about this.
What is it trying to tell me? What is the problem? How do I fix it?
All help is appreci
Personally at this point, I would much rather use the news group,
instead of filtering and storing all this mail.
Also, threads can run much "deeper" on a news groups and people don't
get a annoyed as they may on mailing lists...
Dan Petersen wrote:
> Not sure how to get all ISP's to carry the
How about setting up a mail to news gateway?
People could then choose which way they want to view the info.
and possibly more ISP's would carry the group if it had more traffic?
-Kyle
--
_
---ooO( )Ooo---
I think what your asking is "why does my object move when I rotate it?"
Well, again I assume that you have a Shape3D under a TransformGroup, and
you are rotating this transform. Rotations occur about the origin of
the transform, so if the transform has any non-zero translation
components, the ob
You could do some things with geometry using tangents, or you could just
use Java3D to do it for you.
I assume you want the object to be "sitting on" the sphere. Assuming
the object's "up" is positive Z, look at these thoughts:
Given a selected position on the sphere (longitude, latitude) of ra
Not sure how to get all ISP's to carry the group. Probably need to get their
sys admins to get the latest official list of groups (posted to news.groups,
I believe).
I don't know about a web accessible view. I can mention it to our web guys
but I don't think they will be to thrilled with the id
I got the "Real-Time Rendering" book for Christmas. It's not bad.
Helped me understand quaternions a little better too.
I also own the OpenGL redbook (programming guide). Good source for
seeing the specs on what those min/mag tex filters are really supposed
to do, has a good description of the
I have recently changed how my Canvas3D size is selected. Since we are
switching to changing "skins", we compute the location & size of the
canvas3D and set it using setBounds(). Works fine in a browser window,
but while running as an application (from Kawa) the Canvas is the right
size, but the
Alan,
I put a few "mini book reviews" on j3d.org, check those out. "Real Time
Rendering" is a very good book.
- John Wright
Starfire Research
Alan Workman wrote:
>
> Hello all,
>
> I know that the reference material for Java 3D is a little on the slack
> side as far as explaining 3D concepts a
The code for the Lightwave loader is included in the Java 3D
SDK in the file java3d-utils-src.jar.
-Paul
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> Date: Wed, 7 Mar 2001 17:43:00 -0
Hello all,
I know that the reference material for Java 3D is a little on the slack
side as far as explaining 3D concepts and how they relate to the Java 3D
API. I was
wondering from everyone's experience, what would be the best book to
get to learn 3D concepts so that I could compliment the exist
> MIME-Version: 1.0
> Date: Thu, 8 Mar 2001 17:21:32 +0100
> From: BRANDY Cyril <[EMAIL PROTECTED]>
> Subject: [JAVA3D] Normal generation
> To: [EMAIL PROTECTED]
>
> Hi !
>
> I read a mesh from a file representing a plane (17000 vertices)
>
> I put this geometry in a TriangleArray. I have to set
David,
I think this is relatively standard fare for flight simulators and
such. Usually the use two intersecting quads (or 4 triangles) with alpha
transparency mapped textures of the trees. From any angle (except from
above) it looks like a tree.
I believe their last quad (or 2 triangles) is s
Rats.
So what would be the path to make the news group accessible?
How about Sun setting up a web accessible view like many other support
news groups? ;-)
Dan Petersen wrote:
> A newsgroup was created:
> comp.lang.java.3d
>
> Although this was created through the (very painful) official usene
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You could do some things with geometry using tangents, or you could =
just
use Java3D to do it for you.
=A0
I assume you want the object to be "sitting on" th
From: "Shawn Kendall" <[EMAIL PROTECTED]>
Sent: Thursday, March 08, 2001 12:37 PM
> Is there a Java3D news group?
comp.lang.java.3d. Very light traffic.
Cheers,
Fred
===
To unsubscribe, send email to [EMAIL PROTECTED] an
A newsgroup was created:
comp.lang.java.3d
Although this was created through the (very painful) official usenet
process, some ISP's don't appear to carry it. As a result almost
nobody uses it ( 1 - 2 posts a week I would guess).
Dan Petersen
Java 3D Team
Sun Microsystems
> User-Agent: Mozill
Is there a Java3D news group? I thought awhile back we went over this
and one got set-up. This mailing has really grown, and >30 posts day
starts to get into the news group area of Internet communications! :-)
--
___
Shawn Kendall
I know that this forum is on the "proggramming
aspect of java3d" but can anyone help on this.
I have a Sphere at(0.0.0)
and an object that I want to place on the Sphere.
Whereever I place it, I want it to always rotate the center point of that object
to (0,0,0). Can anyone help?
Zak
PS. T
From: "Michael P. McCutcheon" <[EMAIL PROTECTED]>
Sent: Thursday, March 08, 2001 10:33 AM
> Cool...I see...the WakeupOnElapsedFrame sounds most like what I was doing
> with VRML (i.e. after each frame, update all objects, etc.)
>
> So this processStimulus method is called by Java3D...does this m
Desiree,
Doesn't your right side fold back onto itself? (point 3 to 4 is the
reverse of 2 to 3) (I didn't look beyond your right side) Thus you
really didn't create boxes... which of course you don't see until you
rotate them.
As an experiment, if you still suspect a problem with normals, perhap
I tried sending this mail many times without anu success .. !
Hope this time will work
--
Hi All,
I am using GeometryInfo to draw volumes extruded from surfaces. This works very simply.
But when my surfaces contain holes I have a problem of showing them as a re
Hi !
I read a mesh from a file representing a plane (17000 vertices)
I put this geometry in a TriangleArray. I have to set the normals for each
face to have some shading, and i wonder if j3d is able to generate normals
for each face.
I try to compute the normals myself, but my vertices are not
oo
On Thu, 8 Mar 2001, Yazel, David J. wrote:
> I don't know enough of your app to understand what "looks wrong" to you.. In
> the second screenshot there are empty bands in the middle of the box.. is
> that what you are re
Hi All,
I am using GeometryInfo to draw volumes extruded from surfaces. This works very simply.
But when my surfaces contain holes I have a problem of showing them as a real holes.
My question is : is it possible to draw the hole in the surface using a GeometryInfo ?
Please note that I pa
I don't know enough of your app to understand what "looks wrong" to you.. In
the second screenshot there are empty bands in the middle of the box.. is
that what you are referring to? If that happened during a rotation I would
suspect the normals were wrong.
Dave Yazel
-Original Message
As Dave mentions yes, you will not "see" the move as it will move
instantaneously unless you use a behavior or thread so that the renderer
sees each update and not the result of all these updates. Using a
behavior is the easiest way to do this.
- John Wright
Starfire Research
"Yazel, David J."
On Thu, 8 Mar 2001, Yazel, David J. wrote:
> Could it be clipping? "corners of boxes disappearing" sure sounds like a
> clipping problem.
It could be I am not sure, I was just wondering about clipping how it
could create such an effect, like in the attached screenshot. Why can I
see the above b
Cool...I see...the WakeupOnElapsedFrame sounds most like what I was doing
with VRML (i.e. after each frame, update all objects, etc.)
So this processStimulus method is called by Java3D...does this mean that I
should make an object than extends javax.media.j3d.Behavior pass a
wakeupOnElapsedFrame
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I think what your asking is "why does my object move when I rotate it?"
=A0
Well, again I assume that you have a Shape3D under a TransformGroup, =
and
you are
Hi All,
I am using GeometryInfo to draw volumes extruded from surfaces. This works very simply.
But when my surfaces contain holes I have a problem of showing them as a real holes.
My question is : is it possible to draw the hole in the surface using a GeometryInfo ?
Please note that I pa
I am attaching a link to a product that renders trees in a very nice manner.
I just can't figure out how they do it. They say further on their website
that they use only 6 triangles per tree including shadows and fallen leaves.
And that it appears 3-d from all angles.
The only thing I can thin
Could it be clipping? "corners of boxes disappearing" sure sounds like a
clipping problem.
Regards,
Dave
-Original Message-
From: Desiree Hilbring [mailto:[EMAIL PROTECTED]]
Sent: Thursday, March 08, 2001 9:54 AM
To: [EMAIL PROTECTED]
Subject: Re: [JAVA3D] problem with rendering
> Hi
> Hi Desiree,
> I would suggest you to use TriangleStripArray. Rgds, |:0).
ok, i switched to TriangleStripArrays, but it does not help, the effect is
the
same. Any other ideas?
Thanks Desiree
>
> Desiree Hilbring schrieb:
>
> > Hi everybody,
> >
> > I created an object, consisting of sever
Well I don't think thats likely to work. Because it is in a AWT event and
not in a behavior for one thing. What I would expect to happen is you push
the button and it will do the 100 transforms in under one frame, thus the
next frame will jump the object to the end destination. I do the vast
ma
Hi All,
I am using GeometryInfo to draw volumes extruded from surfaces.
This works very simply.
But when my surfaces contain holes I have a problem of showing them
as a real holes.
My question is : is it possible to draw the hole in the surface
using a GeometryInfo ?
Please note that I pass all
Could you tell me i can do when:
if the object is rotated in x, y, z. it moves with
the object instead of stay fixed.
I'd like to know how rotate my obect when this
happened axles ( x , y ,z ) rotate together with my
object.
Hi Rick,
could you be more specific. do you want to start a new panel with a new canvas
inside? or
you just want to get rid of the canvas forever??
Cheers,
Karsten
Rick Livesey wrote:
> Hi Guys,
>
> Just a quickie. I've got a graphics panel that renders all my J3D objects,
> but what's the be
I don't want to give a completely bad impression of Matrox. We've used
their products for many years with excellent results (the G200 was a
good card for quite a while). Now however (for the past two years) they
have stumbled badly with the G400 which they won't admit is very
temperamental (this
Peter,
The problem with "planning to buy a book" is that there are virtually no
books on Java 3D currently published. Also since it is changing so
rapidly it's tough for hard copy documentation to keep up with Java 3D.
Sun seems to indicate that 1.3 will largely fix the problems with
transparen
Hello,
Using C++ modules from Java and vice versa is relatively easy using
JNI. The C++ code needs to be modified a little bit and a dll library
created. The exact procedure is given on Sun's JNI website:
http://java.sun.com/j2se/1.3/docs/guide/jni/index.html
I especially found their tutorial t
Michael,
That code looks like it should work. Assuming of course the
TransformGroup and it's object are in the scene with appropriate
capability bits set.
- John Wright
Starfire Research
"Michael P. McCutcheon" wrote:
>
> I am used to programming in VRML. With it, you would have a
> TimeSensor
Hi Guys,
Just a quickie. I've got a graphics panel that renders all my J3D objects,
but what's the best way to clear that screen AND de-allocate all the
memory used to represent it?
Cheers me dears
Rick
===
To unsubscribe,
you can write your own custominterpolator. write a class that extends
Interpolator with
wakeupOnElapsedFrame
or
wakeupOnElapsedTime
in the processStimulus you can then increment the position, etc. how you
want it. It will be called every x frames/milliseconds depending how you
initialized your w
Hello
You have to install the Java3D plugin (JRE and Java3D).
Installation process is in: http:\\www.j3d.org\installing.html
Hope this helps.
Hello,
I'm new to Java 3D, and I'm trying to do one applet that show a ColorCube.
It is a very simple thing to do. I've written the applet and I'm able
Hi Desiree,
I would suggest you to use TriangleStripArray. Rgds, |:0).
Desiree Hilbring schrieb:
> Hi everybody,
>
> I created an object, consisting of several smaller boxes, created by
> QuadArrays. The problem arises, when I try to rotate the box, then I get
> some really strange renderi
hey guys
do you know how i can call an exe files from within a java program ?
also, how difficult it is to wrap visuall c++ modules with jni to enable
bi-directional between the java / c++ modules ?
what is the process invloved ?
thanks
Ben Arbel
Xtivia Technologies
Web
http://www.xtivia.com
h
Hi Jonathan,
Look there...
http://www.j3d.org/tutorials/raw_j3d/chapter5/
http://www.j3d.org/tutorials/raw_j3d/
Rgds, |:0).
Jonathan Albert C Vallar schrieb:
> Thanks for your help!
>
> Can I ask if there is a possibility that I can get the parent of the viewplatform
>and modify the rotati
Hi everybody,
I created an object, consisting of several smaller boxes, created by
QuadArrays. The problem arises, when I try to rotate the box, then I get
some really strange rendering results. The edges of the objects are cut of
or
some, not all, of the smaller boxes are not displayed.
I searc
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