Hi...
when jdk 1.3 and java3d is installed . There are examples in
jdk1.3/demo/java3d
They are good to start with
Anoop
- Original Message -
From: davide <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Sent: Wednesday, October 25, 2000 6:23 AM
Subject: [JAVA3D] examples
> can anybo
Ok, kudos to Uma and Kelvin for helping me work through this one!
Thank you, thank you.
Here is a short explanation of what we are doing and the results.
We implemented a "Particle System" (I prefer Manager, it's not really
a system) in Java3D.
Our first attempt was simple using TransformGroups,
can anybody tell me where to find some GOOD examples?
thankyou!
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hello friends,
I am starting with java3d...
is there a way to use 3d hardware vith java3d
I mean a 3dfx card
the docs say I can, but I don't see how!
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- Original Message -
From: "Joe Kiniry" <[EMAIL PROTECTED]>
> Hello folks,
>
> I have an application that has a large amount of computation (real-time
> physics + much more) before correct information is available to render a
> new frame. All of our subsystems are multi-resolution, that
Shawn:
I love you guys!
*raises beer to Shawn*
Now, I am a little confused, how can a particle
system be implemented in a single triangle strip array since triangles need to
be contiguous or are you using strips of one or two triangles each?
And are you transforming every vertex y
You can try different light sources of different colors at each end of the
cube, and play around with the material of each face of the cube.
The BlueLitTwistApp.java example code of the tutorial produces similar
look and feel. The tutorial link with example source:
http://java.sun.com/product
You don't need a ColorInterpolator to do that.
Simply setting the vertex colors in a GeomtryArray with the correct lighting
mode in ColoringAttribute(SHADE_GOURAUD) will give the results in your .jpg
"B. H." wrote:
> Hi,
>
> can anybody tell me how to use ColorInterpolator for producing a image
The only way to be sure that you get totally synchronized behaviors execution
in Java3D is to write your own behavior management (which it sounds like you
have) and to call it's update somewhere in a derived Canvas3D class, mostly
likely in pretender(). We had to do this BUT the main problem is t
Hi,
can anybody tell me how to use ColorInterpolator for producing a image that
looks like in the attachment?
It mustn´t look identical but resemble!
Thanks for any help.
Bernd
Box.jpg
Hi Rob,
Thanks, for the update. One question.
Will you guys serve up a signed intaller for Java3D runtime and will it
default to the correct directory for 1.3 ?
Thanks
Rich
-Original Message-
From: Rob Posadas [mailto:[EMAIL PROTECTED]]
Sent: Tuesday, October 24, 2000 12:19 PM
To: [E
Ok, I'm sure many people have had this problem.
Our first pass at a "particle system" had this but it was not important
for us to fix until now.
Our particle group is actually one single Shape3D using a TriangleStripArray.
It runs very fast :-) Much faster than individual Shape3D with each
thei
This is fixed in the 1.2.1 beta.
Sorry for the noise everyone... :-)
Shawn Kendall wrote:
Ok, I'm sure many people have had this problem.
Our first pass at a "particle system" had this but it was not important
for us to fix until now.
Our particle group is actually one single Shape3D using a Tria
Hi,
"Yazel, David J." wrote:
> Well creating a plane that is 2,000,000 meters on a side will cause some
> problems. First of all the resolution for coordinates starts to get shaky
> after 20k meters, so plain old rounding and truncation errors will cause you
> problems.
Yes, that's what I thou
Hello folks,
I have an application that has a large amount of computation (real-time
physics + much more) before correct information is available to render a
new frame. All of our subsystems are multi-resolution, that is to say, we
can tune their detail level such that per-step execution times a
Uma Sabada wrote:
> Shawn:
>
> Your usage is correct. When changing the validVertexCount it is
> not necessary to change the initialVertexIndex unless you want to
> change the starting index also. This bug is fixed in 1.2.1 beta:
>
> 4338910 - change in valid vertex cou
No one has ever come out and said they had developed a high performance,
flexible avatar system in Java3d. I know some people have worked on them,
but so far no code has been released which can do this. Has some been
written? I believe so, since there that robot war product (referenced
somewher
We are right in the middle of such a project. We have very basic skinning
using the GeometryUpdater interface. The internal version of our OpenFLT
loader now supports Java3D Morph nodes, which we use for facial animation and
hands etc. However, we do not have an animation playback system yet.
I know this subject has been discussed a few times over in this list but I
haven't been able to find a suitable clear answer.
Is there a framework to work with 3D avatars or characters in Java3D?
I am aware of the H-Anim and MPEG4 specs but as far as I am concerned those
are file formats. What
Shawn:
In the current implementation, Copy-mode may also use VertexArray if the
geometry is editable (i.e. any of the write capability bits are turned set
for the geometry). By-ref mode always uses vertex array.
Vertex Array still levarages the hardware T&L. The difference between
using Displa
Please forward me an invitation
[EMAIL PROTECTED]
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[EMAIL PROTECTED] and i
Shawn:
Your usage is correct. When changing the validVertexCount it is
not necessary to change the initialVertexIndex unless you want to
change the starting index also. This bug is fixed in 1.2.1 beta:
4338910 - change in valid vertex count not reflected in rendering w
I'm sure you are all tired of hearing this, but it's still
tied up in the release process. We'll get it out as soon
as we can.
Rob Posadas
Manager, 3d Graphics Software
Sun Microsystems
[EMAIL PROTECTED]
(650) 786-7873
>
> It's so annoying me.
> It was supposed to be released last week, was
Hi Shawn,
This might be bug
4338910 - change in valid vertex count not reflected
in rendering when dlist is used
which is fixed in v1.2.1 beta1. Please try your program
in the upcoming release. If the problem exists
please send us a test program.
>
>I'm using a TriangleStr
Here is some requests for Java3D team.
In an effort to make the fastest possible particle system we need a
few questions answered.
1) What is the best Geometry mode to use when you need to have variable
length GeometryArrays? Should it be copy mode or by-ref mode?
As it was explained to me by K
I have no idea what the problem is. If others have the same problem, please
drop me email. I posted a message to the Java Web Start Forum asking others to
run the Java3D test. I had the exact same problem with a little Java2D test
(http://www.iasystservice.com:8080/test.jnlp. Move with arrow ke
Hi Boris,
I unterstand now what you mean.
to get the A matrix I can use the BoundingBoxcenter Ok , but when the user translate
the object again I would have to get the new Center and to calculate the new A matrix
again(I am using the MouseRotate, MouseTranslate and MouseZoom classes)I think it
wou
Hrm... Not sure. I installed JWS on another machine (1.0b) and it seemed to
work fine. What OS are you running?
I'm running win2k with IE 5.0 and Netscape 4.75. The machine running JWS
DOESN'T have Java3D installed. I also have JDK1.3 installed.
-Jamie
Mark Beckman wrote:
> Jamie,
> I trie
oops.. forgot to mention I am running Netscape 4.6
Could this be an issue???
In meantime, I will download newer version
-Mark
--- Jamie Warner <[EMAIL PROTECTED]> wrote:
> Hrm... Not sure. I installed JWS on another machine
> (1.0b) and it seemed to
> work fine. What OS are you running?
>
Jamie,
I am running Windows NT 4.0 Workstation. In the JWS
prefs I have JRE 1.3 selected. (I also have JDK 1.2.2
installed). I installed JWS 1.0b. Here is the
stacktrace from the "Exception" tab on the error
dialog:
JNLPException[category: Download Error : Exception:
null : LaunchDesc: null
Hi Chris,
instead of
com.sun.j3d.utils.behaviors.picking.Intersect
you will find the desired stuff under
com.sun.j3d.utils.picking.PickIntersection
Read the instructions under com.sun.j3d.utils.picking, especially under
com.sun.j3d.utils.picking.PickTool !!
This can be fiund under com.sun.j3d.u
It's so annoying me.
It was supposed to be released last week, wasn't it?
I want to know why it wasn't released last week and when it will be released.
Kelvin, I'm sure you know why & when.
Please Tell me
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Oops. I forgot to tell you that you have to have java web start
(http://www.javasoft.com/products/javawebstart) installed. It should handle
connecting the mime types to the browsers. (The JRE issue I don't know how to
solve and am looking into).
-Jamie
John Wright wrote:
> Jamie,
>
> I tried
Hi,
maybe I can help by describing what my scenegraph looks like:
The ViewBranch looks like this:
LOCALE
|
BG
|
TG - only translation to Point of Interest
|
TG - Z-Rotation
|
TG - Y-Rotation
|
TG - X-Rotation
|
TG - only translation along z-axis (zoom)
|
ViewPl
Jamie,
I tried to run your app as well. Netscape complained
about the lack of plugin... I downloaded and
installed Java Web Start. Now when I access the page,
JWS starts and the progress bar flashes for a while
then I get the following message:
*
Hi ,
once you have the boundingbox and the radius try the following
// SceneGroupBounds is your BoundingBox
Point3d center = new Point3d();
SceneGroupBounds.getCenter(center);
double radius = SceneGroupBounds.getRadius();
Vector3d temp = new Vector3d(center);
Transform3D viewTrans = new Tr
The way I do this is to check before they move if there was going to be a
collision, then stop the move if there would be. I do this by sorting my
objects into a resolution grid, then running through all the shapes checking
for intersections on the bounding box representing the moving object.
Da
don't use the applet tag. try the object tag in ie and the embed tag in
netscape ... this sample html code works on my site fine
http://java.sun.com/products/plugin/1.3/jinstall-13-win32.cab#Vers
ion=1,3,0,0">
http://java.sun
Class Intersect not needed anymore, no replacement - and how do I test
for intersections now..?
Can anyone help me, please ?
Thanks a lot,
Chris
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Hi Mohammed!
I do not think that what you are sying is possible,
but the way I suggested you need to calculte the matrix
T*A*R*A^(-1)*T^(-1)
first and then multiply the transform attached to your object by this
matrix as a single operation. In that way you perform only one
multiplication
by th
Hello,
I am viewing a Shape3D object in my applet when I resize the Netscape
Window I get this Message and the object is not displayed.
HEIGHT = 800 > alt="Your browser understands the tag but isn't
running the applet, for some reason." Your browser is completely
ignoring the
tag! -->
Hi ,
I'am having kind of the same problem as you:
I want to make the scene (consisting of transformgroups, behaviors and
shape3ds) fit into the canvas3d. Therefore I have to change the
viewTransformation (translate and rotate it). I'am able to get the center
and the radius of my scene (with a sp
Hi Boris,
my point is that I don't want to translate the object to the origine because my
objects kann have 500.000 triangles or more( and that will cost me too much
time). Until now I have translated my objects to the origine and it works fine(
and that is done with the A Matrix you suggest I sh
-- =_NextPart_001_01C03DAD.3C890C68
Content-Type: text/plain;
charset="iso-8859-1"
Content-Transfer-Encoding: quoted-printable
Some people use Collision detection and then constrain the motion.=A0 I
believe there are some problems getting this to work, such as the fact
that when the c
We have a Compaq Armada... don't know which model.
-Lee
-Original Message-
From: raja [mailto:[EMAIL PROTECTED]]
Sent: Monday, October 23, 2000 9:33 PM
To: [EMAIL PROTECTED]
Subject: Re: [JAVA3D]
did you try Toshiba tecra 8100 series or IBM T20 series?
-Original Message-
From:
Hi!
You need to perform the following transformation:
T*A*R*A^(-1)*T^(-1)*M
where
M is your object
T is the object's transform that holds all bthe transformations performed
on the object till now.
A this matrix brings the center of the object to (0,0,0) if the object was
not originally crea
Hello,
can someone please tell me how to calculare the Rotation Matrix. the
rotation should rotate a Shape3D object whose boundingbox center is not
at (0.0,0.0,0.0) but I still want to have the same effect as if the
obejct is at (0.0,0.0,0.0).I too translate the view so that the camera
is on the
I'm using a TriangleStripArray for the entire set of particles in our particle
system. Every four verts make up a two triangle quad that is the
particles geometry. Everything is working great except for one thing.
When we have less than the "max" number of particles "live" in the
scene, I would
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