Hi
Thanks for your answer. I had searched the archive, but wasnt sure if
I have the same problem. Especially because, since I have upgraded to
1.2.1 things are much better: the transparent area, which surrounds
the black text pixels is not causing problems anymore. This was the
case with the 1.2
Hi Corysia!
Thanks to your suggestions I set up the stars background and it is really
nice. As I do not have any needs of realistic star-ccordinates (it is all
for a science-fiction thing), I used a random object (java.utils.*) where I
get the coordinates by
Random rand = new Random();
rand.next
Christian Bartel wrote:
> How can I make those stars be far
> away and still visible? Under Direct3D it seems that stars just dissappear
> when a given distance is reached. Therefor I do only see a few of my 16000
> stars...
There is something called far clipping plane. You do not see objects
beh
Hi Christian
> Random rand = new Random();
> rand.nextfloat();
>
> I get values between 0 and 1, but no negatives... this results in a square
> area filled with stars in the first quadrant... Is that the expected
> behaviour? I thought the values should be both positiv and negativ...
Yes read the
Hello,
I 've been searching in various places for the archive of this list, with no
success.
Could someone remind us the URL of the archive ?
Thanks in advance... :-)
Olivier
| -Message d'origine-
| De: Allen McPherson [SMTP:[EMAIL PROTECTED]]
| Date: dimanche 24 juin 2001 21:05
| À:
Hi Artur!
> There is something called far clipping plane. You do not see objects
> behind this. I think that you should put everything into
> background node
> and stay with small coordinates.
How exactly "put in background node"? You mean, I should realize the
star-background via an image on ba
Hi!
> Yes read the Javadoc for Math.random and you will see that's
> the correct
> behaviour.
Actually I have a book (Go to Java 2) where is stated, that the function
should return values positiv and negativ. I guess that is a bug in that book
then...
> Yes again, you should set the back clippi
Hi Christian
> > the correct
> > behaviour.
>
> Actually I have a book (Go to Java 2) where is stated, that the function
> should return values positiv and negativ. I guess that is a bug in that book
> then...
Hmm I suppose so, drop the author a message I think he would be very glad
and this mist
Olivier BANASZAK wrote:
> I 've been searching in various places for the archive of this list, with no
> success.
> Could someone remind us the URL of the archive ?
Ye Olde Java3D FAQ says:
http://archives.java.sun.com/archives/java3d-interest.html
--
Justin Couch htt
Yes, rastering is what I'd rather do, but the speed hit is unacceptable.
- Original Message -
From: "Daniel Selman" <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Sent: Friday, June 22, 2001 1:07 PM
Subject: Re: [JAVA3D] Labelling objects
> Corysia,
>
> I think Raster is probably what you
Yes, that's basically what I'm doing. I'm not having a problem with placing
the text, really. The problem is updating the location of the text as the
objects move.
- Original Message -
From: "John Wright" <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Sent: Friday, June 22, 2001 1:25 PM
Su
I have a similar problem when installing on my laptop (win98se) over a
network drive. Typcally, just copying the executable to my local drive
solves the problem. Once in awhile, I'll have to run the install twice to
get it to run, even when it is local.
- Original Message -
From: "Mark
Yes, put it into the Background() object. Load up your geometry in one or
more PointArray objects, then add it to the tree as a Background object.
Here's a snippit of code. You also might be interested in how I changed the
brightness of the stars with color.
private BranchGroup createConten
BTW, I just bought a GeForce2 MX400 w/ 64 megs and S-video out for US$98,
including shipping. If you're willing to spend about $30 more than that,
buy a Pro. I don't suggest getting a MX200.
- Original Message -
From: "John Wright" <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Sent: Sunda
How to get the screen co-ordinates for the mouse inside
a behavior's processStimulus method that responds to
a MOUSE_CLICKED event ?
Thanks
Anand
Anand Pillai
DELMIA Solutions India.
680, 8th Main, JP NAGAR II Phase,
Bangalore 560 078.
Tel: +91-80- 658 9858/59 Fax: +91-80- 658 9855.
[EMAIL P
English
-
I want to add to my application a option to save the created scene to a file. This
file must have a standard format like 3ds, dxf or vrml.
Someone knows a utility that does it? The CyberVRML97 has a VRML97Saver but when I use
it the program always hungs.
I hope you can help
Does anybody know how to determine if the current
z-buffer is using 16 bits or 32 bits?
David,
Are you talking about 1,000,000 vertices visible at all times? Are you
going to do collision detection or not as you navigate? How texture
intensive will your scene be? How many lights would you be using?
Just as a guess you probably could approach that without CD (collision
detection)
Hi
J3Ds
When Running my
applications i get this exception about every second time i run while the other
50% are loading
and running
normally.. any ideas ?
Exception in thread
"main" java.lang.IndexOutOfBoundsException: Index: 0,
Size:0 at
java.util.ArrayList.RangeCheck(ArrayLi
Dave:
> 1. If we use a geometry updator and use the set() methods on non-ref
> geometry, but only update the normals and coords does the texcoords and
> colors still get sent to the card that frame?
Yes. All components (changed or not) will be sent down every frame. Typically,
there are several
I can second this... the installer does seem to fail every once in a
while (Win98SE - there are documented problems with WinME). It has
worked to simply run it again.
- John Wright
Starfire Research
Corysia Taware wrote:
>
> I have a similar problem when installing on my laptop (win98se) over a
Hi Anand
Have a look into the code of the utility-package. There is the class
MouseTranslate, which gets the java.awt.event.MouseEvent from the
WakeupOnAWTEvent. You can use this as usual (e.g. getX()).
Is this an answer to your question?
Bye, Oliver
==
Hi Ashish,
The generalized algorithm Pg = Integral( r.m(dr))/Integral(dm)
where r is a distance vector and m (dr) is mass density.
For simple primitives like Sphere/Cone/Cylinder/Box it is the center of
the volume itself if you assume uniform distribution of mass , which your
de
A small correction.
For cone,
Pg = r0 + delta*unit(r0->r1)
delta = (h*sqr(R0)/2 + sqr(R1-R0)*cube(h)/4 +
2*(R1-R0)*R0*sqr(h) /3) / (sqr(R0) + sqr(R1-R0)*sqr(h)/3 + (R1-R0)*R0/h)
h = height of cone
R0 = Radius of smaller circle of cone
Ashish,
The generalized algorithm Pg = Integral( r.m(dr))/Integral(dm)
where r is a distance vector and m (dr) is mass density.
For simple primitives like Sphere/Cone/Cylinder/Box it is the center of
the volume itself if you assume uniform distribution of mass , which your
descr
Hi Borja,
Java3D Fly Through (available from the Java3D home page) includes a utility
for reading and writing scene graphs to a high performance binary file
format (j3f). Data stored in this format loads much quicker than data stored
in the less efficient text based formats (often by an order of
Hi Allan
> Does anybody know how to determine if the current z-buffer is using 16 bits or 32
>bits?
Hmm. you could try a readRaster with a DepthComponentInt and look at the
values. The farest away should be 2^N-1 Where N is the number of bytes for
Z-buffer. Or you could try a commandline switch
Hi
> BTW, I just bought a GeForce2 MX400 w/ 64 megs and S-video out for US$98,
Hmm isn't that the 64mb SDRAM Version? If yes I read it's actually slower
than the 32mb SDRAM Version.
> including shipping. If you're willing to spend about $30 more than that,
> buy a Pro. I don't suggest getting
I've been working with JMF 2.1.1 to add texture animation to our package
and it's relatively straightforward. However, I've noticed that the movie
formats supported by JMF are not as complete as I might hope for. In
particular there are a number of compressors that are not supported at the
curre
Hello Anand!
Thanks very much for your help. I really appreciate it
and because of this, I went a long way in the program.
But one problem is coming, once objects are on the
screen and you click with the mouse to draw line
between them, null pointer exception is thrown. I
tried to use PickCanvas
We implemented our skin so that we can change a static and it uses either
by-ref or setNNN methods. It was my hope that if we throttled down the
number of frames per second that we were actually making changes to the
skins then we could optimize the scene. But the sad fact is (as you say
below)
Hello David!
Thanks for your reply. If I use bounds( your code) to
calculate center of two primitives then there is one
problem.
Like if I take two SIMILAR shape3D objects and give
them different translation and rotation before finding
there centers using bounds, there centers are same.
Why its
Are you getting the bounds before or after the node is live? if you have
the bounds pre-transform, then try getting the localToVWorld transform fro
your shapes and use it to transform the center point of the bounds.
David Yazel
- Original Message -
From: Ashish Aggarwal <[EMAIL PROTECTED
Hi all,
if I apply a rotation to a transformGroup T and then
call
T.getLocalToVworld(aTranform3D).
aTransform3D.get(aMatrix)
Ifound the aMatrix is an identity matrix:
1 0 0 0
0 1 0 0
0 0 1 0
0 0 0 1
why the rotation does not change the local
coordinates?
what does the getLocalToVwo
getLocalToVworld, only grabs the transforms before a node, not the transforms
of a node. Like for example if you have a Shape3D be the child of T, then
calling getLocalToVworld from the Shape3D, will return the rotation of T.
Leyland Needham
==
Hi.
Thanks for the info. I was busy seaching graphics and game development sites
for articles on inverse kinematics hoping there was information on CCD. :-)
The best resource i came up with was Chris Welman's PhD thesis on Inverse
Kinematics. It discusses methods for implementing an ik system, b
John,
I appreciate your spending time thinking about the question. My answers
follow. Also, I've included a general description of the application I am
thinking about.
I am to visualise spatial points carrying information about some
measurements. The points form a surface - not a solid body. The
The sun's example: MouseRotate.java is difficult to
accurately control the pose of the object.
It is not because of the inaccurate movement of the
mouse , but actually the object is not following the
draging direction.
I explore the source code of the example, find it uses
rotX and rotY to rota
From: "Bob Dengle" <[EMAIL PROTECTED]>
Sent: Monday, June 25, 2001 7:45 PM
> Hi.
>
> Thanks for the info. I was busy seaching graphics and game
development sites
> for articles on inverse kinematics hoping there was
information on CCD. :-)
>
> The best resource i came up with was Chris Welman's
Title: Problem in Collision
Hi All,
I am facing one problem regarding collision. I had made one application in which I had made all objects pick able. So that user can pick a particular object and place that object at desired position. I want that when one object collides with anothe
hi there all,
just one simple question, has anyone of you used/come across with the
following classes: AppearanceRetained, TransformGroupRetained,
Shape3DRetained...etc.. -- all those ___Retained classes? I think Sun uses
them to know whether something has changed/added..
any info is apprec
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