Billboards are one way to render "fuzzy particles" but there are two
alternatives which should be faster:
1) Large, anti-aliased points. These should be the fastest, but
there may be problems with inconsistent rendering on different
OpenGL implementations
2) OrientedShape3Ds. These are new in J3D 1.2 beta1 and should be
faster than using Billboards since the orientation is managed by
J3D "directly" rather than through a Behavior.
Doug Gehringer
Sun Microsytems
> From: "Casteel, Don" <[EMAIL PROTECTED]>
>
> A suggestion was posted that Mathengine might be useful. Since I'm desperate
> to develop a particle system I've taken a look at it. Although there isn't
> good documentation for it, it does have a Java "Wrapper" which seems to be
> working good so far.
>
> I feel confident that a good particle system can be built in the near
> future, but we'd still need a way to render "fuzzy particles" for a good
> smoke look. There was a work around posted which suggested using a billboard
> image with transparency. this seems reasonable to me. Perhaps someone would
> like to try that while I'm working on a particle system?
>
> -----Original Message-----
> From: Osborne, Richard N
> [mailto:[EMAIL PROTECTED]]
> Sent: Wednesday, February 02, 2000 12:42 PM
> To: [EMAIL PROTECTED]
> Subject: Re: [JAVA3D] Smoke
>
>
> To do fog you would need a particle system. I am not sure if that exists in
> Java 3D right now... You may be able to fake particles using 3D points.
>
> -----Original Message-----
> From: Matthew Flagg [SMTP:[EMAIL PROTECTED]]
> Sent: Wednesday, February 02, 2000 9:33 AM
> To: [EMAIL PROTECTED]
> Subject: [JAVA3D] Smoke
>
> Hey everyone,
> Does any one have any idea how to make smoke? I want to
> animate
> things like a fire or vehicle exhaust. I thought maybe some kind of
> derivative of fog but it would have to work in reverse. In other
> words it
> thicker near the origin and fades as it gets farther. I don't think
> fog
> would really work but that is the best I could come up with at the
> moment.
> Any ideas? Thanks.
>
> Matthew Flagg
> Java Programmer
> Enterprise Computer Systems, Inc.
> Greenville, SC
> [EMAIL PROTECTED]
>
>
> ===========================================================================
> 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".
>
> ===========================================================================
> 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".
