John Sear wrote:
> 1.) I want to explicitly state when to render new frames. I'm currently
> using stopView() and renderOnce()... but the javadoc states these are
> heavyweight and should only be used for verification... What's the preferred
> method?
This sortof sounds a bit like you need to use immediate mode rendering.
I occasionally use renderOnce - particularly in image capture.
Sometimes, if there is no movement or animation in the scene, the canvas
will not render. Considering that you need a call in postSwap() to read
the buffers, you need to force another frame render.
> 2.) I'm using VRML97 loader and end up with a large number of nodes which
> basically do nothing... i.e. Groups with a single child, link and
> sharedgroups when the data isn't shared. (I think this is due to DEF in the
> VRML source). Anyway, should I be removing these manually or does compile
> automatically spot this?
Yes, this is a really hard problem in mapping VRML to Java3D. We've
re-implemented the code twice now and will probably have to do it again.
The reason for the shared groups is that it is possible that someone
might trawl the scenegraph with the EAI or a script and dynamically add
items to the scenegraph using direct node references. This makes things
*really* sticky to deal with and so we have to build all these other
ancillary structures. It is annoying to say the least.
> P.S. If anyone has any good information for using h-anim with Java3D. I've
> found nothing :( and am designing everything myself.
AFAIK, there is nothing. The Xj3D loader is currently working towards
that goal for Siggraph. First goal is Java in the scripts, and then we
need to support Protos. Proto support is about 50% done, but is on the
back-burner as we think scripts are more important. If you can wait for
a couple of months, then we should have decent, real proto and script
node support.
--
Justin Couch http://www.vlc.com.au/~justin/
Freelance Java Consultant http://www.yumetech.com/
Author, Java 3D FAQ Maintainer http://www.j3d.org/
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Neither man nor woman is the measure of all things. Every organism
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- Greg Bear, Slant
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