Hi Darrin
> As far as the number of triangles never being enough well that goes along
> with how many colors are really needed to be displayed. Again, the human
> eye can only differentiate about 16 million or so if I recall correctly so
Far less already 24bit are more than the human eye can dis
I'm in need of a little help getting multicanvas/view setups working.
Hoping someone could give us a hand to get this working.
Basically I want to set up 3 canvas arranged in a wedge in front of the
user like this:
__
/ \
/\
/ o \
-+-
All,
I've attached the quick example I knocked up which uses the particle system
code I wrote for j3d.org. You can use it in commercial applications. I hope
we can get enough people behind this so that it's a resource for all of us!
:-) The code is designed to allow people to write their own
Part
Erik,
Sounds like the same issue Thomas Gick just posted. I don't have much
experience with the DirectX version of Java 3D, favoring OpenGL. Perhaps you
can send your example to SUN for further analysis?
http://developer.java.sun.com/developer/earlyAccess/java3D/java3d-bug-report
.html
Sincerel
Please
see the chapter on keyboard behaviors in my book. If you don't want to buy the
book you can download the source code and work from there (KeyNavigateTest
example).
Sincerely,
Daniel
Selman
Author - "Java 3D Programming"http://www.manning.com/selman
-Original Message-F
Chris,
This sounds very familiar. :-( We should get together on this. I checked in
my second pass on a generalized particle system into cvs.j3d.org at the
weekend. First pass was checked in several weeks ago.
The current code is pretty stable, comes with a simple example and I've
written Particl
hi. all
I make a small java3d program to use behavior
class.
This program interact with key event,
for example press 'A' key and left object rotation, press 'B'
key and right object translation
I used WakeupOnAWTEvent class to interact key event, but
WakeupOnAWTEven
Check out "IL-2 Sturmovik". It's widely regarded as the best current
Flight Simulator. As far as I know it's not using Java 3D but it IS
using Java and the performance is fantastic. Yes, they have some
occasional "stuttering" issues but it sure is a good case for Java being
more than powerful e
I am a taking a course using Metrowerks CodeWarrior
Learning Edition V2.0.
Is it possible to download the Java 3D API for
Windows for CodeWarrior?
Thanks,
I've changed my Java JDK from 1.3 to 1.4 and Java 3D from 1.2 to the
1.3beta. I'm running on Windows 2000, using DirectX.
Performance of the Canvas3D display for my animation is extremely slow, no
matter what I'm doing in my application (by about a factor of 10).
Occassionally, when I execute the
> >I just wanted to say that i've gotten a 1.2.1 particle system working
that uses
> a giant QuadArray and BY_REFERENCE members for quick insertion/removal.
> >
> >Particles are defined as quads with their own offset transforms (for
> scaling/rotation/position offset) and hook into a simple
> pos
Hi,
please help me. i become crazy.
Java3D code runs and runs not.
I wrote a little java 3d code ( Car Race) . this code i run on 3 different machines.
1) Pentium III 450 MHZ 384 MB RAM Win2000 Directx 8.1 Java 1.4 rc
java 3D 1.3 beta1 (DirectX) Elsa Gladiac 511 (64
It sounds like the following bug :
BugId : 4453839 - GeometryByReference Triangles not always rendered
This bug is fixed in the coming Java 3D 1.3beta2.
- Chien Yang
Java 3D Team.
> Date: Mon, 11 Mar 2002 13:49:10 -0700
> From: SUBSCRIBE JAVA3D-INTEREST Anonymous <[EMAIL PROTECTED]>
> Subj
Call me crazy, but I think there's more to 3D games (especially
first-person shooters) than just the life-like graphics. Once you conquer
life-like graphics (as far as the human eye can tell), I believe game
vendors will move to more complex physics engines or AI routines to make the
oppo
Ok agree there is enough triangles on the screen when the real-time
graphics on the PC look completely life-like (read: Lord of the Rings
graphics) and when enough CPU is still left to do human-like AI.
That will quite a while (if ever).
When that happens in a couple of decades or more, I will re
Hello,
I made an app with a ground who is created with individuals shapes (so my map is n * m
shape3D = triangleStripArray)
To improve performances, I used geometry by reference, (doesn't seem to be faster, is
it normal ?) and my BIG problem is the following :
some cells disappear in front, i
Darrin Smith wrote:
> Oh man I don't agree with that.
>
> The human eye can only discern, what is it 30 or 60 frames per second?
No, at least 120fps. Mostly noticable when performing rolling
maneauveres. Most current commerical/military flight sims are 60 and the
current + next generation are doi
Oh man I don't agree with that.
The human eye can only discern, what is it 30 or 60 frames per second?
As far as the number of triangles never being enough well that goes along
with how many colors are really needed to be displayed. Again, the human
eye can only differentiate about 16 million o
Thank you very much!
I didn't think of the way of traversing a BranchGroup. That makes a lot of
sense thinking of it now.
cheers!
Lan
At 11:47 AM 3/11/2002 -0500, you wrote:
>Hi Lan
>
>for( int i = theGroup.numChildren() - 1; i >= 0; --i ){
> theGroup.removeChild( i );
>}
>
>-Raffi
>
>-
the problem is the number of children is changing each time you remove a child, so you
can remove from the end of the list to the front or remove the first element until the
list is empty.
while (int i = theGroup.numChildren()-1; i >= 0; i--)
theGroup.removeChild(i);
or
while (theGroup.nu
>
> After all, just how many frames do you need to
> have per second anyway?
Wrong question. The question is "how many more triangles do you need on
screen?"
And the answer is that I want all those I can get while still getting a
a decent frame rate. You will never come to a point where top notc
Believe me I understand the point as the project I am on has a constraint
much lower that a 500Mhz processor ( a P166 with 64MB of RAM...now that is
sloow ).
My point was that moving forward, say a year from now and the difference in
performance will seem even less important.
Indeed, with ea
Of interest to 2D overlay artists...
The new Java 1.3 beta1 version has addressed the performance hit of drawing to the 2D
graphics context during the rendering loop. I was using a work-around solution -- a
David Yazel-inspired hovering JWindow overlay -- until the beta1 version was just
relea
Hi Darren,
Funnily enough, most e-mails I get concerning my report
says the exact opposite. Many complain that I
make performance appear too unimportant.
Here is an except from a mail I got about 3 hours ago:
(I will let the mailer be anonymous since he don't know I
use his text here - but I kn
FWIW,
I like many here coded in C++ for a number of years. I once thought that
performance was one of the most important characteristics. Back then, it
was given the hardware. Today, with Pentium 4 PC's over 2000Mhz and AMD
chips just as fast, does it still make sense to worry about the differ
Chris Forrester wrote:
> I just wanted to say that i've gotten a 1.2.1 particle system working that uses a
>giant QuadArray and BY_REFERENCE members for quick insertion/removal.
For performance comparison, have a look at the latest code that has been
added to the j3d.org code repository. Daniel
>Date: Mon, 11 Mar 2002 11:41:25 -0700
>From: Chris Forrester <[EMAIL PROTECTED]>
>Subject: [JAVA3D] Particle System
>To: [EMAIL PROTECTED]
>Delivered-to: [EMAIL PROTECTED]
>Delivered-to: [EMAIL PROTECTED]
>
>I just wanted to say that i've gotten a 1.2.1 particle system working that uses
a giant Q
I just wanted to say that i've gotten a 1.2.1 particle system working that uses a
giant QuadArray and BY_REFERENCE members for quick insertion/removal.
Particles are defined as quads with their own offset transforms (for
scaling/rotation/position offset) and hook into a simple position/directio
Hi Rob,
In that benchmark the timer is started after the scene is built and
stopped after the last frame is drawn. The graphs shown in the
report is when I timed how long it took to draw 3000 frames with
vertical sync switched off, using the same driver and same
screen mode / color depths.
So, i
Jacob,
In your paper "Evaluating Java for Game Devlopment"you compare the speed of
OpenGl and Java 3D by measuring the time it takes to create a virtual world
consisting of several thousand boxes. Please excuse my naivety, but is the
time in seconds simply a measure of how long it takes to get t
The Java 3D Frequently Asked Questions list for Monday March 11 2002
This is a posting of topics covered in the Java 3D FAQ. The answers
to these questions are kept at:
http://www.j3d.org/faq
Please consult this list and the web site before asking questions on the
mailing list.
If the
Guaug,
The release of Java 3D 1.2.1_04 is to ensure the 1.2.1 version
be compatible with JDK1.4. Most reported bugs will be fixed in the
coming Java 3D 1.3beta2 release.
Java 3D(TM) 1.2.1_04
--
CHANGES
As the subject says, I'm getting refresh issues with the new J3D 1.2 path
under JDK 1.4. The canvas doesn't repaint itself under the following
conditions:
- a heavyweight popupmenu is display on top of if, then hidden (leaves gray
square), note that a heavyweight tooltip doesn't cause this proble
For now, if you need to use JDK1.4 you either choose Java 3D 1.2.1_04 or
Java 3D 1.3beta1.
- Chien Yang
Java 3D Team.
> Date: Mon, 11 Mar 2002 17:59:12 +0100
> From: Christian Zanardi <[EMAIL PROTECTED]>
> Subject: Re: [JAVA3D] crashes on window 2ooo machine
> To: [EMAIL PROTECTED]
> MIME-ver
Yes it does. Works perfectly. I am using it right now.
- Christian
-Message d'origine-
De : Discussion list for Java 3D API
[mailto:[EMAIL PROTECTED]]De la part de Lan Wu-Cavener
Envoye : lundi, 11. mars 2002 17:42
A : [EMAIL PROTECTED]
Objet : Re: [JAVA3D] crashes on window 2ooo machine
Hi Lan
for( int i = theGroup.numChildren() - 1; i >= 0; --i ){
theGroup.removeChild( i );
}
-Raffi
-Original Message-
From: Lan Wu-Cavener [mailto:[EMAIL PROTECTED]]
Sent: Monday, March 11, 2002 10:38 AM
To: [EMAIL PROTECTED]
Subject: [JAVA3D] dispose the children of a detached
Thanks for your response. I am glad to know it is a bug that has been fixed.
JDK1.4 will not work with j3d1.3beta, will it?
Lan
At 11:13 AM 3/11/2002 -0500, you wrote:
>I had the same problem for a year with my app on WinNT and Win2000.
>Using the java flag -Xint fixed the crashing but gave a
Hi, every one:
I have a problem with disposing the contents of a detached Branchgroup
without setting the BranchGroup to null.
I have a BranchGroup generated dynamically through the user interacting
with the program. I need to often to detach the BranchGroup and would like
to garbage collect its
Had the same problem. But as mentioned, JDK 1.4 fixed this kind of problem.
- Christian
-Message d'origine-
De : Discussion list for Java 3D API
[mailto:[EMAIL PROTECTED]]De la part de Roy Duffy
Envoye : lundi, 11. mars 2002 17:13
A : [EMAIL PROTECTED]
Objet : Re: [JAVA3D] crashes on win
I had the same problem for a year with my app on WinNT and Win2000.
Using the java flag -Xint fixed the crashing but gave a huge performance hit
because it disables HotSpot compiling.
When JDK1.4 came out, the crashing stopped all together.
-Roy
Lan Wu-Cavener wrote:
> Hi, every one:
>
> When
Hi, every one:
When I run my j3d program on Win2K machine, sometimes I got the error"The
instruction at ".." referenced memory at "xx". The memory could not
be "read". And the Canel button will prompt another dialog box saying "
java.exe has generated errors and will be closed by window.
I've been working with ways to implement a virtual mouse within the java environment.
By virtual mouse I mean a system overlying the mouse input that will capture movement,
append that movement to a virtual positioning system, and immediately reset the
position of the mouse back to the center of
Hi Rob,
Hope this is some help. I've been using this on
models from various different sources.
I simply traverse the scenegraph for the given root
node to retrieve all of its Appearance node components. Then I set the indiviual
appearance components for each Appearance to attributes which
Anyone have suggestion:
After, I load in an object from an OBJ file. How can I make it render as
points, wire frame, flat shaded, etc... basically a quick mod to ObjLoad
that comes with J3d.
Thanks for any help
Rob Brown
Eyetronics Inc
Developer
[EMAIL PROTECTED]
Joachim Diepstraten wrote:
> So what we are waiting for 1.3b2 and not for 1.2.1_04
:) Well... I want 1.3b2 so that I can load textures again.
--
Justin Couch http://www.vlc.com.au/~justin/
Java Architect & Bit Twiddler http://www.yumetech.com/
Author, Ja
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