I think you have misunderstood me. I do not "want quaternions" (I am
quite familiar with them in any case). What I want is code that does
for fixed-axis rotations what MouseRotate does for rotations around a
single point. (I think I can write such code myself, but I would
prefer to use somethin
> Amit Jindal wrote:
> collision detection. The site is not clear to me. They asked about CVS
> and CVSRoot and I am not able to understand how this works to download
> the code. If anybody can help me then please help..
CVS is a piece of software for doing code version maintenance. CVS
stands f
So you want quaternions: where you specify a vector (axis) [X Y Z] and an angle W to
rotate about the axis.
I don't have this code (I'm sure a few on this list do) but you can look at:
http://www.cs.berkeley.edu/~laura/cs184/quat/quaternion.html
http://skal.planet-d.net/demo/matrixfaq.htm#Q45
Thi
I mean that once a given axis in space is fixed by the user, then all
subsequent mouse-dragging motions are mapped to rotations of the
target TransformGroup around that fixed *axis*.
For example, in the special case in which the fixed axis is the
y-axis, then all mouse-dragging motions would map
Title: Code repository of j3d.org
Hi all,
How do I access he code from code repository on j3d.org for collision detection. The site is not clear to me. They asked about CVS and CVSRoot and I am not able to understand how this works to download the code. If anybody can help me then ple
Arbitrary axis or arbitrary point in space *and* a specified axis?
Chris
Kynn Jones wrote:
> I need to map mouse-dragging motions to rotations around an arbitrary
> axis (not necessarily through the origin). Does anybody know where I
> can find code (preferably some extension of MouseRotate or
On Tue, 26 Jun 2001, Kynn Jones wrote:
> I found PickMouseBehavior after searching the archives. I don't have
> a directory to go to for it. Is there any source for Canvas2D on
It ought to be in the demos that came with java3d. I am running on Linux
and I got it in the Blackdown distribution.
I need to map mouse-dragging motions to rotations around an arbitrary
axis (not necessarily through the origin). Does anybody know where I
can find code (preferably some extension of MouseRotate or
MouseBehavior) to do this?
Thanks,
KJ
==
Justin,
Netscape will run Java 2 applets just fine (with or without Java3D -
this has nothing to do with Java 3D). The bug comes in when trying to
used Javascript to call an applet method. Sun's response to me (in
addition to the bugs filed in the bug database) was that this is a bug
in Netscap
John,
Thank you for the information. I have an impression I could go for GeForce
2. Will let you know what the benchmarks are if my family approves the
expense :).
>> If the points form a 2D plane then why not use 2D graphics?
The points form an almost arbitrarily curved surface. However, there
The Cosm team is publishing two technologies which we have/are developing as
part of our online world development. Both are available now from Source
Forge.
ARMI:
Fast, compact, asynchronous Java messaging system. Replacement for Java RMI.
Pronounced the same as "army".
http://sourceforge.net/pr
John Wright wrote:
> We ran into this too. As Sun says: "it's a bug in Netscape" (and
> apparently the only plan to fix it is to wait for some future version of
> Netscape 6). Basically Netscape is incompatible with HTML pages
> converted with the HTMLConverter (ie Netscape doesn't work properly
Gaoming,
We ran into this too. As Sun says: "it's a bug in Netscape" (and
apparently the only plan to fix it is to wait for some future version of
Netscape 6). Basically Netscape is incompatible with HTML pages
converted with the HTMLConverter (ie Netscape doesn't work properly with
Java 1.2.x o
Nicolás Tapia wrote:
> I need to known your opinion about the productivity tools to build JAVA3D
> applications.
This is a little confusing about what you are asking for - tools to
build 3D content, or tools to build a general application, which happens
to use Java3D?
AFAIK, there are no tools
Oops :-(
>From: Bob Dengle <[EMAIL PROTECTED]>
>Reply-To: Discussion list for Java 3D API <[EMAIL PROTECTED]>
>To: [EMAIL PROTECTED]
>Subject: Re: [JAVA3D] Changing the color of a Shape3D
>Date: Tue, 26 Jun 2001 16:21:22 -0700
>
>Without knowing the exact code you use to get the appearance attri
Without knowing the exact code you use to get the appearance attributes, i
would suggest that you try setting Material.ALLOW_COMPONENT_READ and
Material.ALLOW_COMPONENT_WRITE .
-B.D.
>From: Kynn Jones <[EMAIL PROTECTED]>
>Reply-To: Discussion list for Java 3D API <[EMAIL PROTECTED]>
>To: [EMAIL
> From: Kynn Jones <[EMAIL PROTECTED]>
>
> Found the answer (in the Archive, as it turns out). Changing
>
>Box box = new Box(0.2f, 0.2f, 0.2f, app);
>box.setCapability(Primitive.ENABLE_APPEARANCE_MODIFY);
>
> to
>
>Box box = new Box(0.2f, 0.2f, 0.2f,
> Primitive.E
Hello!,
I need to known your opinion about the productivity tools to build JAVA3D
applications.
what are you using now?
and what are you think about it?.
Nicolás Tapia
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Found the answer (in the Archive, as it turns out). Changing
Box box = new Box(0.2f, 0.2f, 0.2f, app);
box.setCapability(Primitive.ENABLE_APPEARANCE_MODIFY);
to
Box box = new Box(0.2f, 0.2f, 0.2f,
Primitive.ENABLE_APPEARANCE_MODIFY,
app);
got
Hi, All:
I used the following function from PrintCanvas3D to convert my Canvas3D to a BufferedImage:
BufferedImage doRender(int width, int height) {
bImage = new BufferedImage(width, height, BufferedImage.TYPE_INT_ARGB); ImageComponent2D buffer = new ImageComponent2D(ImageComponent.F
Surely it cannot be so insanely difficult to do something this simple.
I am trying to write code to change the color of a Shape3D object.
The Shape3D object is created using this method:
private Box makeBox(Color3f color) {
Appearance app = new Appearance();
app.setCapability(Appearance
On Tue, 26 Jun 2001 15:13:47 -0500, Will Holcomb <[EMAIL PROTECTED]> wrote:
>Canvas2D is a class in the FourByFour example. (The same place as
>PickMouseBehavior.) It ought to be in the saem directory.
I found PickMouseBehavior after searching the archives. I don't have
a directory to go to for
Hi Michael,
Which version of Java3D (OGL/D3D), graphics card,
window version are you using ?
Please give us a test case to investigate.
Thanks.
- Kelvin
---
Java 3D Team
Sun Microsystems Inc.
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>MIME-Version: 1.0
- Original Message - From: Michael Carter Sent: Tuesday, June 26, 2001 3:22 PM To: [EMAIL PROTECTED] Subject: [JAVA3D] [Java3d] native code error in JVM I am running animation of a mechanical man. I am using an Alpha object. Every so often the JVM crashes with the error message be
I am running animation of a mechanical man. I am using an Alpha object. Every so often the JVM crashes with the error message below. Can anyone help me stop this. Michael Carter, PUC student An unexpected exception has been detected in na
Canvas2D is a class in the FourByFour example. (The same place as
PickMouseBehavior.) It ought to be in the saem directory.
Will
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Hello Anand!
Thanks very much for your continuing help and because
of it I have understood lot of things. But there is a
problem with the program. Shape3D myShape is null and
hence the if loop which states that:
if( myShape != null ) is not executed.
I am getting the message "scenegraph pa
Richard:
You may get local and global coordinates:
example: a behavior that reply to MouseEvent.MOUSE_PRESED:
Point3d p = pickCanvas.getStartPosition ();
PickIntersection pi =
pickResult[0].getClosestIntersection(p);
Point3d Pt = pi.getPointCoordinates(); // local
Point3d
Hi, all!
Not like the MouseRotate, the OrbitBehavior rotates
the view platform while rotating the object. that
means the object is actually not being moved to its
background.
the Behavior is either associated with the
viewplatform, or with the object, which means the
rotation or movement can onl
Hi
Thanks for the tip on getLocaltoVworld() :-).
I was thinking about the general technique behind CCD and I thought of
something. If you have a chain of bones pointing towards an effector, why
can't you use simple trigonometry to rotate the chain?
For example, take a chain with 1 DOF and 1 bon
Hi
> have puttogether a CAD/CAE platform within a
> remarkably short time by simply using the
> platform-independent Java and Java3D APIs. There are
I agree.
> effectively. If you use Java3D with some understanding
> of core geometry issues needed for CAD/CAE area, there
> is a lot to gain from
On Tue, 26 Jun 2001, Anders wrote:
> I'm going to create a small 2D/3D CAD tool using Java3D. One thing that
> a user should be able to do with the tool is to draw 2D geometries
> (rectangle, ellipse, etc.) using the mouse. My idea is that the user
> should be able to rotate the 3D scene to an ar
We feel Java3D is GOOD for geometry modeling. Our
company is also in the CAD/CAM/CAE area, creating an
entirely web-centric, pure Java CAD/CAE platform. We
have puttogether a CAD/CAE platform within a
remarkably short time by simply using the
platform-independent Java and Java3D APIs. There are
bu
The documentation for PickMouseBehavior refers to the class
PickDragBehavior as an example of how to extend PickMouseBehavior. I
managed to find (after searching the archives!) code for
PickDragBehavior, but this code has some problems.
The first one is that in this code PickDragBehavior extend
it is not suitable for geometric modelling???
We have just tried to build an interactive application of
geometrical modeling with java3D but there are BUG
on very simple things like (interactive creation of a Plan, or one sphere using
file menus from an empty or charged 3D scene.)
We are sure th
I can't understand what you are saying. Could you try rewriting that a
different way?
David Yazel
-Original Message-
From: osam [mailto:[EMAIL PROTECTED]]
Sent: Tuesday, June 26, 2001 12:41 PM
To: [EMAIL PROTECTED]
Subject: [JAVA3D] Java 3D is Bad for geometry modelling!
We just d
We just described a bug about creation of geometric models.
All existing software are created (90%) with C++ (CATIA, PRO/E, RHINO.)
We have tryed java3D, Hence it is not suitable for geometric modelling???
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OK that will be good if it comes in a few days.
What a shame we can not progress without fixing that BUG.
Thanks.
Uma Sabada a écrit :
> This problem :
>
> 4467858 - GeometryArrayRetained getDlistTimeStamp() throws
> ArrayIndexOutOfBoundsException
>
> is fixed in the soon to be released _02 pa
This problem :
4467858 - GeometryArrayRetained getDlistTimeStamp() throws
ArrayIndexOutOfBoundsException
is fixed in the soon to be released _02 patch.
-Uma
Java3D Team
> Delivered-To: [EMAIL PROTECTED]
> X-Accept-Language: fr
> MIME-Version: 1.0
> Content-Transfer-Encoding: 7bit
> Date: Tue
Hi Anand:
This is an example, it was sent last days for same question .
Carlos.
Anand Pillai escribió:
> 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 Solu
I think I have found a bug in the j3d library, probably in
getPixelLocationInImagePlate. It appears that converting from pixel
coordinates to image plate coordinates to virtual world coordinates
produces dimensions that are 2x too big.
The code below (two files) illustrates this bug. Run the pr
Hi can't help much but I also get this error in my code, but this is my
first J3D program so I think I could do it cleaner and avoid it. I have
a few views in a tabbed swing panel and a menu which allows me to add
additional tabs with new views.
I can start the program with 1-8 tabs ok but if I a
Hi Ashish,
I found out your problem. When you pick the object with
SceneGraphPath closest = obj.pickClosest(0, 0), you are casting a ray
in the point (0,0) in window space. In your geometry that ray wont intersect
with any geometry at all.
What you need to do is get the co-ordinates in
Hello , all
We have a strong problem in our java3D application. Indeed whe have a GUI with 4
views. When we loaded a scene contained in a file and then we try to create an
quadarray through a toolbar the following message appears
java.lang.ArrayIndexOutOfBoundsException at
javax.media.j3d.Geometr
David,
Without textures and without polygons to fill this sounds like a
reasonable load on the graphics card. And if they are static points
Java 3D should be able to optimize fully.
If the points form a 2D plane then why not use 2D graphics?
I've not tried to render a large number of static po
Hi!
Besides the Java3D Tutorial by Sun I have not found
any good tutorial or manual of Java3D. I am not very good searching in the
Internet so I would appreciate if any of you could give me a link or book
title.
I need to learn: light, animation, textures,
triangulation of polygon surfa
Hi,
I'd like to know if the Java3D v1.1.1 Runtime is still available... Where
can i get it ??
Thanks...
Max CHEVALIER.
e-mail : [EMAIL PROTECTED]
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I'm going to create a small 2D/3D CAD tool using Java3D. One thing that a user should
be able to do with the tool is to draw 2D geometries (rectangle, ellipse, etc.) using
the mouse. My idea is that the user should be able to rotate the 3D scene to an
arbitrary view (in order to get a 2D work p
I had the same problem, but it now it works.
I have deinstalled the JDK and then start die J3D
installer.Wait while the Installer is started, and
then install the JDK again. After you have installed
the JDK, continue with the J3D installation.
Try it,
perhaps it works.
CU Sebastian
--- John
Hello,
Let me submit to you a little problem, that may be will seem really too easy
for some of you :
I wish to perform a shape3d animation that would combine a full rotation along
the z-axis with a return half rotation along the y-axis.
Revising the J3D documentation I read that two interpolators
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