>On Tue, 8 Jan 2002 17:53:31 -0700, Richard Bragg <[EMAIL PROTECTED]> wrote:
>Does anyone know how I could get just the lines along the outermost outline
> of the entire polyhedron?
What you are probably looking for are silhouette edges. Can be done
using a stencil buffer.
Using software, you c
Hi Raj
> >Does anyone know how I could get just the lines along the outermost outline
> > of the entire polyhedron?
>
> What you are probably looking for are silhouette edges. Can be done
> using a stencil buffer.
Wrong. You only find outer silhouettes edges by using stencil buffer.
Read Gooch
Hi there,
does anyone know how to tweak Raster objects to give higher
performance??
E.g. use ImageComponents with widhts of power of 2, or sth similar.
Any comments appreciated,
Karsten
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Hi,
I'm trying to see movies in a Java3D application. I'm already using JMF to
load and see those movies with Java2, but how can I do that on a quad or
another 3D object in Java3D ?
My reply address seems not to function, please use [EMAIL PROTECTED]
Thanks a lot.
=
Hi J.D.
Well, generate silhouette edges too in software; though unlike creases and
boundary edges the silhouettes are view dependent, and I am not sure
whether the hardware or software approach is superior.
I usually have access to the edge data structure of the geometries that
I create, and I a
Hi
> Well, generate silhouette edges too in software; though unlike creases and
> boundary edges the silhouettes are view dependent, and I am not sure
> whether the hardware or software approach is superior.
Well it hardly depends on scene complexity. Software approach could really
kill you off
Find the J3DRenderer example at the JMF
website. I think it DemoJ3D. Its
under collatoral.
You have to overwrite a class that implements
Video Renderer. In the process() method
(which is run continuously) there is
code to swap bytes between the JMF Buffer
and the Data Buffer of BufferedImage--
Hi J.D.
I think the Zhang et al. paper that you're referring to is the one
that is based on Gauss Maps. I was planning on doing something with too.
Also, there are some smart seeding strategies using local coherence
for classifying silhouette edges efficiently. But as I said, silhouettes
are bea
Justin-
Thanks for the reply. I could do some fundraising.
I will see what's out there but it might not be
much at first. I would like to take the project
to the code repository. I am trying to release
the Java Media book, I could get a little cash
to do some prototyping ideas to put in the
bo
Hi,
I have a Jslider(values 0 to 100%) wich
performs a modelclipping for a set of objects in my scene.
I want the clipping to start from the top
point of the top object and finish to the bottom point of
the bottom object.
I can get the coords of both extremum by using
BoundingBox' getUpper
Sorry-
I made the classic mistake and sent a reply
intended for one person to the whole
group!
Oh, well, its all true!
Alex
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Hi Ray
> I think the Zhang et al. paper that you're referring to is the one
> that is based on Gauss Maps. I was planning on doing something with too.
Nope not quite Gauss Maps are used by Gooch. Zhang uses something similair
a normal mask as rectangular cells and clustering. I think Gauss Maps
A plane can be defined by a normal to the plane and a point on the plane.
The x, y, z values of the normal are the a, b, c values of the plane equation
with the d value equal to -dot(normal, pointOnPlane).
This can be accomplished with the following code:
// You supply these two.
Vector3f norma
Try
new Vector4d(0.0, 1.0 , 0.0, -JsliderValue * extremumPointTop ); //
(the plane will be parallel to the xz plane)
Assuming the JsliderValue is between 0 and 1.
The eqation of a plane in 3d space is
0 = ax + by + cz + d. In the vector4d you specify the a parameters
a,b,c,d.
To get a feel
Read the plane specification in the api docs carefully. I think you
need something like this:
eqn1 = new Vector4d(0.0, -1.0 / (extremumPointBottom +
JsliderValue * diff),
0.0, 1.0);
where diff = extremumPointTop - ExtremumPointBottom
Regards,
I know that java3d team is now working hard on 1.3 release, which seems
to be quite a big improvement compared to 1.2, both performance and
feature wise. But could you share some light on how future of java3d
will look like ? I'm not talking now about technical detail (pluggable
occluders, pixels
Hi,
Thank you all for your help.
It seems to work but my ModelClip does not fit my
objects extremities. it start after the highest point and stop before the
last one.
If your equation is correct (and I know it is), the
problem should comes from the extremum points determination, but I can n
Hi all,
I have 12 bit gray images and want them to use as transparent textures.
What method would be the best if you look at speed and/or memory ? (I
will have about 60-100 images of format 512x512, so it's hard work for
my graphics card and memory bus)
1) convert it to RGBA format and use Image
Hi all,
from all the discussion going on since the realease of 1.3 beta I would
summarize that the transparency problem solves some problems now but
still not all. For me it is therefore not solved. It seems that it will
only be (completely ?) solved if a triangle sorting mechanism exists.
Since
Hi,
I am trying to use either OrientedShape3D or the Billboard behavior
to fix the orientation of some shapes.
So far they work, but they have some side effects that make them
less than optimal for my application.
If I use OrientedShape3d, the command View.setProjectionPolicy()
gets disabled so
I know this was meant to be a private reply, but there's a bunch of FAQ
stuff here, so I might as well let everyone in on it. I'll do the rest
as a private reply.
Alex Terrazas wrote:
> Onto other things. I have always respected
> you. You seem very talented.
S. Don't want you to rui
Why don't you use Text2D objects and translate them at
the good place directly ?
-
--- Jorge Guerra <[EMAIL PROTECTED]> wrote:
here's a picture of what I'm trying to do... I
want to have the flat little boxes by the geometry
entities display numbers. I
--- Raúl <[EMAIL PROTECTED]> wrote:
> Can you be more explicite? (Detail your problem a
> bit more, thanks. and
> please you should include the latest post in the new
> in order to keep time
> searching it.)
>
> Regards.
okay, this is my problem :
I created a scene with java3D using some tutori
Hi Friends:
I am looking for some good book or source code pool.
Last year I happened to know that a book called Core
Java3D to come out early this year. However when I
checked the same website yesterday I did not find any
information about it. Does anyone know when this book
will be available?
Guang Bin Liu wrote:
> information about it. Does anyone know when this book
> will be available? And does any one know whether
> there is cource code pool of Java/Java3D for sale?
I know that Daniel Selman has a book that is about to hit the
presses for java3D. I'm sure he'll chip in with t
Just to be clear.. you want your entire scene rendered on its side right? I
made a small change to our look up/down routine to rotate on the z access
instead of the x access for a test. Unfortunely the range is contrained to
less than 90 degrees so it didn't turn the scene all the way over, but
I have had that book on order since forever. Daniel, when will it ship?
- Original Message -
From: "Justin Couch" <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Sent: Wednesday, January 09, 2002 7:09 PM
Subject: Re: [JAVA3D] new book or source pool
> Guang Bin Liu wrote:
>
> > information
Hi all,
I have been very encouraged by all the posting I have been reading. it's a
lively community that is full of people who are willing to share and help.
Please keep it up! :)
I'm new here, and I've been searching around for the possibility of using
java3d to load a 3d studio max scene (a huma
I'm not quite sure to do the animations using java3d a bigginner myself.
However I do know that you need to export your model to a .3ds file (all
versions of 3dsMax should support this), then you need to download a
geometry loader (for java3d) from the web that loads .3ds. Another way to do
this,
Hi all,
I'd like to know if anyone has worked with
i-glasses from io Display Systems using JAVA 3D.
If there are other good, and cheap, 3d glasses that
I should know about please notify me.
Regards,
Leon Sólon da Silva
Hi Justin:
Thank you for the information.
The address: http://www.j3d.org/links.html
seems now working. Was it closed?
Anyway, your mail is still helpful!
Best regards,
G.B. Liu
--- Gregory Pierce <[EMAIL PROTECTED]>
> I have had that book on order since forever. Daniel,
> when will it ship
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