a cut and paste of one of my previous message which should help you:
/**
* return an array of points interpolated from the given knots
* it is hardcoded to being 5 times the number of knots
* this is done by building the new inferred points from an existing
java3D
* interpolator ov
Hi,
I'm trying to use PositionPathInterpolator to move an object through
fixed points in a scene. In the specification, it says to use it in
the form:
public PositionPathInterpolator(Alpha alpha, TransformGroup target,
Transform3D axisOfTranslation, float knots[
hello scott,
here are my thoughts on decomposing geometry:
>> I have seen a few pieces of code out there that can take a Geometry Array
and
>> create the same Geometry Array only with fewer vertices.
what you mean is commonly named "mesh reduction". but there is something
more powerful: NURBS
deal all,
i had created a button and when the button is pressed,a object under a BG should be
remove.
But when compile, the coding is no error. When it is running,it show the error message
of
"Exception occurred during event dispatching:
at TestApplet.actionPerformed(TestApplet.java)
a
I have a 700 MHz AMD athlon machine with the
creative labs annihilator pro 64MB AGP video
card ... a M7MKA motherboard ( amd's 750 chip set ).
I heard rumors that NT 4.0 was NOT the OS of choice
for gaming ... does this also apply to Java3D applications
NT is what I prefer to use ... howeve
its
possible the j3d runtime is leaving d3d in a bad state.
if you
have the dx sdk, run killhelp or pview from MSVC tools and kill the ddhelp
process.
another test is can you run a plain d3d application
after exit and/or kill ddhelp?
that
helps isolate whether its the j3d or the d3d runtim
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Hash: SHA1
Aldo,
What you have done sounds promising, I don't know why you are getting
inconsistent results, I have not tried this myself.
I would also look at the:
Canvas3D.getVworldToImagePlate(Transform3D t)
method. By transforming two Vworld points separa
Hello,
I have a GeForce Card DDR from Guillemot and the Java3D OpenGl 1.2 Beta1.
It is working quite well expect for problems with Background image and some
loss in performance from time to time.
Best regards,
C. Zanardi.
> Date: Mon, 14 Feb 2000 08:16:39 -0800
> Sender: Discussion list for Java 3D API <[EMAIL PROTECTED]>
>
> I have seen a few pieces of code out there that can take a Geometry Array and
> create the same Geometry Array only with fewer vertices.
> So, if a NURB object had say, 5000 vertices.
suppose you want to move from BG1 to BG2.
Make sure that BG1 has the detach capability flag on, and BG2 has the
extend_children flag on.
Look up the reference for the exact names of these flags.
> sorry to distrub . i am a beignner of java3d.what appropriate capabilities is
> need to set in order
I use a GeometryInfo object to feed data into a LineStripArray to get a
wireframe.
> When using a wireframe appearance (by setting PolygonAttributes and
> LineAttributes appropriately within an Appearance), the wireframe shows
> the
> internal triangles of the faces in addition to the external sh
> MIME-Version: 1.0
> Date: Tue, 8 Feb 2000 12:02:36 -0500
> From: John Kasdan <[EMAIL PROTECTED]>
> Subject: [JAVA3D] Pauli exclusion principle for Spheres?
> To: [EMAIL PROTECTED]
>
> When I use the utility class Sphere I find that I can only show one Sphere
> constructed with the default (void
Hi,
I have a shape 3D in my canvas3D, what I want to do is that if a button
is pressed in my application I want to replace the shape3D from the
canvas3D with a new shape.
What is the best way to do this.
I am having lot of problem, I have tried lot of things, also tried to
detach() a branch gro
David,
I am having the EXACT same problem using code nearly identical to the suggested
code below.
Did it work for you? When I run it, the camera's transform still seems to update
out of sync with the rendered frame. i.e. one frame it's on, another frame it's a
frame late and the combination
I'm not sure if this is the intended behavior, but I can't see why it would
be designed that way.
The problem is this:
If I "pick" a quad primitive from a QuadArray geometry using the following
code, it calculates the vertices normally and the values are correct (I
checked several times).
Point
Nicholas...
after u converted the html file, open the file and check that it should have all the
necessary plugin id code etc which is done by the convertor. If it is not changed
(looks like your original html file), then go to the htmlconverter_bak folder and
delete the file inside with the sa
Hi Eric,
If you are running the applet of-off a server you
shouldn't having this problem. But if u are running
the applet locally with file:// you got to set some
file permission on in the java.policy file. This is
'coz applet sandbox restricts the file access. Add the
following line in the grant
Hi Haroldo,
I too had the same kind of issue with VRML models and
I figured out a way try this:
If u want to detect the collion on the BranchGroup of
VRML model set "setAlternateCollisionTarget(true)" on
that BranchGroup. Important thing is USE_GEOMETRY on
the collision wakeups.
I have a moving
I have seen a few pieces of code out there that can take a Geometry Array and
create the same Geometry Array only with fewer vertices.
So, if a NURB object had say, 5000 vertices.
this package would make the same NURB object, but only use 3000 vertices.
making the object simpler, getting rid of re
//we actually want our transformgroup to control the viewing platform
//we want the view platform to be associated with the camera
transform
//because when we move the camera around, we want to see that
part of the world
ViewPlatform viewPlatform =
This has been put in the java3d e-mail archives, but here it is again.
on your scene that is going 50fps, you are still getting flickering.
Make sure you are doing all updates to your scene through a behavior!
If you are not updating through a behavior, you will have unknown response from
the java
Uma,
OK. Attached is a file that should allow you to duplicate the problem. The
idea of this class is that it enables me to have multiple canvases for the
same scene graph. I also have a very dynamic scene graph. Therefore, I need
to adjust the bounding leaves of the behaviors so that they would
Hi Daniel,
Would you please consider this:
How does one compute the size of a Canvas3D pixel in meters that is
currently being viewed (and compute it consistently)?
I use the viewing platform to view a world globe (Sphere class) representing
the earth. I have tried the following to do this with
When using a wireframe appearance (by setting PolygonAttributes and
LineAttributes appropriately within an Appearance), the wireframe shows the
internal triangles of the faces in addition to the external shape. For
example, if I use a TriangleFanArray to form the surface of a polygon, I see
the wh
sorry to distrub . i am a beignner of java3d.what appropriate capabilities is
need to set in order to move a child of a BG to other?
and also how to get the child index?
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what appropriate capabilities need to set in order to move a child from one Bg to
other ?
and also how to get the child index?
thx all
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of the messag
Hi there,
Does anybody know if Solaris intel version supports NVIDIA
GeForce256, and if yes which cards?
Thanx.
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[EMAIL PROTECTED] wrote:
> Hi David,
> ...hmm...good question.Can't you modify or derive your
> RotPos...Interpolator class in that way every time it gets triggered, it
> will pass its curent trransform3D to the transformGroup of the camera ? If
> that is possible, modify it: (just a suggestion..
Hi janet, thanks you for your help.
but unfortunetelly I have allready converte the html files with html
converter and my plug-in seems to be installed correctly. I really don't
understand why it doesn't work !
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Don't know whether this question has been already answered. But just
in case it hasn't been yet...
U know, u never set the appearance 'app' on your sphere 'sp'. Then
some other object tetra... Anyway, sp.setAppearance(app) on your
sphere. Everything should work then. If not, u can also try to set
Does Sun offer Certification for Java3d?
fahad
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Hi there,
Who could give me the URL to find the
source-codes of the Java3D-API's classes ?
Thanks a lot.
Claude
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dear all,
i want to know how to move a child from a branchgroup to other BG or
from one transformgroup to other transformgroup. can anyone teach me?
thx
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deal all.
i want to know how to control the clockwise or anticlockwise of a
rotationInterpolator ? THX ALL
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Hi Ian,
I would take 3D Maxx or Cosmo or any other 3D modeling tool and create a plane
triangle mesh. Next try to change randomly the y-
coordinate of some vertices and export the mesh as VRML. You now can import it into
Java3D.
Gernot
On Sat, 12 Feb 2000 19:28:21 PST, Ian Phillips wrote:
>C
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