Daniel,
Thanks for the advices.
Take a look please at the attached code. It's one of my first tries when I've
got Java 3D. Please excuse the parseTemp function, at the time I wasn't too
close to Java, I was just experimenting and haven't read the format classes , so
I wrote my own formatter. I needed something like a temperature displayer class
wich I could send a value and a position in the 3D universe. It works... Right
now I have attached to it a Billboard behavior so it will face allways the user,
no matter his position.
Daniel Selman wrote:
> Dan/Steve,
>
> As far as I know there is no way of changing the geometry within a Text3D
> after it has been created. The setString method will merely *append*
> geometry to the internal GeometryArray, regardless of what is passed in.
>
> SUN were supposed to revise some of the Text3D methods for 1.2 however, so I
> might be out of date.
>
> This will leave you with:
> - creating and destroying Text3D objects dynamically. This could be very
> slow, as Text3D objects can become very complex, and it is hard to
> impossible to control the vertex count. You will probably also need
> behavior(s) to align/scale the Text3D relative to the viewer. You may leak
> Text3D memory.
>
> - don't use Text3D, use Text2D or a Raster. This will allow you to update
> the labels but (may) leak texture memory instead. You won't have to align or
> scale the labels.
>
> - write your own Text3D class that allows on the fly updating of geometry.
> Quite a big project in itself, but would be a very useful utility. There is
> probably quite a bit of OpenGL code that you can adapt for this.
>
> Best of luck,
>
> Daniel Selman
>
> [EMAIL PROTECTED]
> http://www.tornadolabs.com
>
> -----Original Message-----
> From: Discussion list for Java 3D API
> [mailto:[EMAIL PROTECTED]]On Behalf Of Dan Todor
> Sent: 10 December 1999 02:40
> To: [EMAIL PROTECTED]
> Subject: Re: [JAVA3D] A good example of dynamic scene changes
>
> >From what I have tried, you can put any text, then change it in a behavior,
> but
> only the EXACT number of characters that you send for the first time to the
> Text3D object. If you send one character in plus or minus, everything
> becomes a
> mess. Haven't yet tried out padding with spaces... Anybody has some
> experience in
> this field ?
>
> Steve Sampson wrote:
>
> > Andy,
> > Great Demo. Wow!
> > What I have is an array of strings that I want to display as 3D objects.
> > And as the program runs, the text changes. I can display the text ok,
> > just not change it.
> > Any help, code or hints would be greatly appreciated.
> > thanks
> > Steve
> >
> > At 08:56 AM 12/9/99 -0600, you wrote:
> > >I wrote a J3D application about 8 months ago which allowed the user to
> > >visualize a ship's motions in regular waves. (The results were
> > >pre-calculated by a commercial hydrodynamics package). Tha java
> application
> > >had to dynamically change the wave profile, and the position of the boat
> as
> > >a function of time. As the scene was changing the user could transform
> the
> > >scene with the mouse. (The scene's 'dynamic' change was made in another
> > >thread). You can download the application from:
> > >http://www.wsatkins.co.uk/asas-aqwa/download.htm - Choose AQWA Sequence
> > >Player 4th from the bottom of the list).
> > >(Just put garbage in the form fields when asked)
> > >
> > >If this is the sort of example you are looking for let me know and I will
> > >send you some code.
> > >
> > >Regards,
> > >
> > >Andy Phelps
> > >
> > >>Hello,
> > >>Does anybody have a good example of dynamically changing what is drawn.
> > >>Or as least tell me where to look? I have a list of thing I want to
> draw,
> > >and as the program runs the list changes and the scene should change as a
> > >result. I understand how to move and rotate objects, but I wish to be
> able
> > >to dynamically change objects.
> > >>thanks for any help.
> > >>Steve
> > >>
> > >
> >
> >
> ===========================================================================
> > To unsubscribe, send email to [EMAIL PROTECTED] and include in the
> body
> > of the message "signoff JAVA3D-INTEREST". For general help, send email to
> > [EMAIL PROTECTED] and include in the body of the message "help".
>
> --
> Best regards,
> Dan Todor
> ---
> You can have it done FAST | \
> You can have it done RIGHT | | --- Pick any two.
> You can have it done CHEAP | /
>
> ===========================================================================
> To unsubscribe, send email to [EMAIL PROTECTED] and include in the body
> of the message "signoff JAVA3D-INTEREST". For general help, send email to
> [EMAIL PROTECTED] and include in the body of the message "help".
>
> ===========================================================================
> To unsubscribe, send email to [EMAIL PROTECTED] and include in the body
> of the message "signoff JAVA3D-INTEREST". For general help, send email to
> [EMAIL PROTECTED] and include in the body of the message "help".
--
Best regards,
Dan Todor
---
You can have it done FAST | \
You can have it done RIGHT | | --- Pick any two.
You can have it done CHEAP | /
TestBehavior.java
