Seems that VRML animations have been starting when the world loads for
awhile. I fixed it today. Attached is the new TimeSensor.java I don't
think I broke anything else but I'm still testing.
The bug was on line 235. A setActive event was being generated when is
wasn't susposed too. I added
Hello,
Tuple, what does it mean exactly, I understand it used to represent tuples
by the javax.vecmath package.
But wich is the origin of this word in programmation ? Perhaps it help me to
understand.
Thanks
Armel
---
'' À cette heure, des enfants naissent en Bretagne.
Seront-ils bretons ? Nul ne
> I am currently useing the sphere class to create a 3d earth using
> a texture map and outlines of land masses. However, the sphere seems
> fairly chunky and not nearly as smooth as I would like. Are there
> things I can do to improve the look of the default sphere?
Use Sphere(float radius, in
Title: RE: [JAVA3D] Smooth sphere?
Try increasing the number of facets on the sphere. This will give you smaller facets and the sphere will look much smoother.
-Original Message-
From: Ronald Van Iwaarden [mailto:[EMAIL PROTECTED]]
Sent: Friday, December 03, 1999 8:38 AM
To: [EMAIL PR
I've got a weird problem with the VRML loader and textures. Seems that the
textures are being loaded off the drive continually. I've put comments in
the VRML loader code and I've found that its only calling the doChangeURL
once... so that leaves the problem somewhere in the utility TextureLoader
Hello everyone,
Could anyone give me some advise about Java3D and the problems I ve had
with the (java provided) Lightwave 3D loader.
I have created lightwave scenes and they load fine into Java3D. However,
when a scene is imported, all objects in that scene becomes sub-nodes of
the lightwave b
Hello everyone,
Could anyone give me some advise on Java3D and the problems I ve had with
the (java provided) Lightwave 3D loader.
I have created lightwave scenes and they load fine into Java3D. However,
when a scene is imported, all objects in that scene becomes sub-nodes of
the lightwave bran
Hi Sophia,
Yes you can add any objects to a running scene graph as long as you 1) put
them under a BranchGroup (you can only add BranchGroups to a live scene
graph), and 2) make sure the proper capability bits are set
(Group.ALLOW_CHILDREN_EXTEND, I think is what you need).
Hope this helps,
-guill
Hi,
Yes you can! Here's an excerpt from my code:
// Create a Canvas 3D
canvas3D = new Canvas3D(null);
// Create a simple universe.
universe = new SimpleUniverse(canvas3D);
// Create the root of the branch graph
// Allow the capability to add new
Vladimir,
As I said...
DS> I wouldn't claim to be
DS> able to explain the details of the algorithm off the top of my head, so
if
DS> you have questions or issues I suggest you consult the FAQ and your
nearest
DS> friendly mathematician (always a good person to know!).
We have used the code belo
Is there a way that I can add objects (Shape 3D) to an existing Java 3D
scene while it is running?
===
To unsubscribe, send email to [EMAIL PROTECTED] and include in the body
of the message "signoff JAVA3D-INTEREST". For gen
I am currently useing the sphere class to create a 3d earth using
a texture map and outlines of land masses. However, the sphere seems
fairly chunky and not nearly as smooth as I would like. Are there
things I can do to improve the look of the default sphere?
--Ron
o The only th
Hmm, how about this:
- take vector (1.0, 1.0, 1.0).
- apply matrix on vector
- compute projection of vector on y,z plane
- calculate angle between projection and old vector, this is your
angle of rotation around the x-axis
Do the same for x,z projection (rotation around y-axis) and y,z
projecti
Hi,
as matrix multiplication isn't cummutative and any homogenous matrix of
transform3D can be made of arbitrary successive mutlplications,
IMHO you cannot extract orientation by interpreting the matrix elements as
an multiplication of predefined sin and/or cos-functions.
This will work only in s
Hey, Daniel, does this really work in ANY case? Correct me if i'm
wrong, but wouldn't this code work ONLY in case the figure was rotated
ONCE only around each axis? As soon as we apply one more rotation to
(RotX * RotY * RotZ) matrix, the value in (2, 0) cell, where normally
sin(yAngle) IS stored,
Eric,
As was pointed out (several times) this is a tricky topic, but here is some
code that we have used successfully. The code is based on an algorithm from
the Matrix and Quaternion FAQ (search the web). I have posted this code to
the list before.
The M+Q FAQ is an excellent reference for thes
Possibly i'm wrong. And that's just a hunch. But this could be due to
asynchronas nature of drawImage function. I came across some strange
problems concerning not Canvas3D redrawing, but redrawing to the
screen in general. I haven't resolved all of them, but it looks like
they are due to how the d
Hi,
a simple way to model this would be (a transformation from old pixel
coordinates xOld,yOld to new ones xNew,yNew):
xNew=xOld+(xOld-cx)*(k1*r+k2*r^2)
yNew=yOld+(yOld-cy)*(k1*r+k2*r^2)
where cx,cy defines the principal point (the point where the camera looks
at), r is the squared distance fro
Hi,
I was wondering whats the best way to use the (sub-)classes of
GeometryArray. Given a set of vertices and the necessary connection
information, there are many ways to create the "geometry" of the object in
question. Just to name a few (just take a look at the subclasses of
GeometryArray:
Tri
Hi --
I am working on a project that requires multiple document interfaces and
3D graphics. This requires a way to work around the problem of
heavyweight canvas3D and the lightweight swing components. With the
alpha release of j3d1.2 there is the option to render the canvas3D to an
offscreen buff
Well, guys, it's already been said that there is no way to do it, at
least not an easy way. Firstly, u can't extract rotation angles using
ONLY 4x4 matrix stored in Transform3D. Someone out here described the
principles of rotation matrix construction. The summary is that if u
do numerous rotation
I'm Very sorry!!! I confused MouseNavigator behavior with KeyNavigator
one. It is the last that has a bug for sure. As to the former one, i'm
not sure at all. Possibly everything just OK with it, possibly it has
the same bug too. David has a nice tutorial where in all examples
MouseNavigator class
Yes, i guess so. Or u can register listeners (like it's done in
utils MouseNavigator or KeyNavigator) and translate the event to them.
The latter way is more convenient and could be easily extended or
reused. But certainly that depends on the goal.
vladimir
-=V=-
>---<===
Does anybody know if there is a way to correct for vertical lines, which
gets non-vertical in perspective?
I think the problem decreases if you zoom in (using a narrow view-angle)
- but I would like to have another solution.
kind regards,
Hardy Henneberg
=
Hi,
you can transform vector (0,0,-1) with the transform3D in question to
receive its current orientation.
Gernot
[EMAIL PROTECTED]
Eric Reiss
<[EMAIL PROTECTED]> To: [EMAIL PROTECTED]
Sent by: Discussion cc:
Hello,
1) Is it possible to use bump-mapping for textures in j3d?
I haven't found a hint. The DepthComponent is only used for raster
images?
2) How can I get light coronas in j3d?
Please help!
Tammo Freese
===
To uns
Where are J3d1.2 alpha and JDK1.3beta available.
Thanks in advance.
Adios
Inaam Afzal Khn
On Thu, 2 Dec 1999, giles wrote:
> Has anyone done speed testing using the beta JDK 1.3 release? We've got
> some VRML models(using the player) that we have speed tested with it and we
> are seeing a spee
Here is the example which was posted, although i tried it and it didn,t
seem to work. If you can get it to work tell me how as well.
On Thu, 2 Dec 1999, Gregory Hopkins wrote:
> Hi,
>
> There seem to have been some good examples posted. I was wondering if anyone could
>explain the
> math invol
I was wondering if you ever got an answer to the question you posted to the
list:
"Is there a way to determine the exact rotation angles for each axes from a
given Transform3D?"
This seems to be a common issue and I am fighting with it now.
*
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