Rob mentions a pure Java implementation of Java3D. Does anyone know of one? Or
of a partial implementation?
I've looked at a few pure-Java 3D libraries and they can have acceptable
performance for my particular application (in my case the cross-platform
abilities are more important than raw speed).
I would *love* to see something where users could hook into hardware or OS
software if it's there and otherwise use a pure Java implementation.
thanks,
Ben Hinkle
> -----Original Message-----
> From: Rob Posadas [mailto:[EMAIL PROTECTED]]
> Sent: Wednesday, September 01, 1999 5:56 PM
> To: [EMAIL PROTECTED]
> Subject: Re: [JAVA3D] Why is Java3D Platform specific?
>
>
> Neil,
>
> Java applications are "write-once-run-anywhere", but the Java platform
> implementations are platform specific. There are Java 2
> implementations
> that are unique to each OS. Java 3D is an extension to the
> Java platform.
>
> Java 3D applications will run on any platform that supports Java 3D,
> but the Java 3D libraries are going to be unique to an OS.
>
> Yes, we could have developed a pure Java version of Java 3D that did
> not take advantage of the graphics hardware acceleration on a system,
> but the performance would have been unacceptable. We instead chose to
> layer Java 3D on top of OpenGL or Direct3D to take advantage of the
> graphics hardware acceleration. In doing this, we introduced
> a small C
> layer to interface to the graphics API. This made Java 3D platform
> specific.
>
>
> Rob Posadas
>
> Manager, 3d Graphics Software
> Sun Microsystems
> [EMAIL PROTECTED]
> (650) 786-7873
>
> >
> > Well you all know my question, from the subject. I don't
> understand why
> Java3D would be made to be platform specific. It could be
> because of the
> DirectX route taken which is only supported by Windows, but
> there is an OpenGL
> version. As long as the platform supports OpenGL it should
> support the Java3D.
> >
> > One reason I could think of was, we are linking to a native
> library but what
> does that matter. If we know the platform we know the
> corresponding OpenGL
> library.
> >
> > Another reason may because the majority of computers are
> made up of either
> Windows Machines. But if this was ever considered in the
> creation of Java3D
> they should take the Java out of the name.
> >
> > There are many different platforms out, SGI, Windows,
> Solaris, Apple, etc. and
> Java3D is supported on Solaris SPARC only, and Windows.
> >
> > Does someone have an answer to this question?
> >
> > Thanks
> > Neil Witcomb
> >
> >
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