Artur Biesiadowski wrote:

> So my question is, how much time, does this preparation take ? Certainly
> too much to do it dynamically between frames, but is it also too lengthy
> to do it on level/area load/switch ?

To give you a rough idea about ROAM: 833MHz laptop (not known for good
I/O performance) takes about 3 seconds to process a 513x513 point grid
to break it into the initial patches (64x64). After that, you need to
compute the first set of view information, so you're already well on the
way to that 5 second mark, without having done any extra information.

I think the general problem is that pretty much all of heavy
optimisation algorithms are based around computing visibility
information of some description. Once you go down that path compute
times sky-rocket because it is essentially a huge set of picking from
almost every point in the world to every other point.

To add one more point, based on the collective experience of the VRML
people, waiting an extra 5 seconds for content is a huge turn-off for
most people. People want things now and aren't prepared to wait for a
little extra time.

--
Justin Couch                         http://www.vlc.com.au/~justin/
Freelance Java Consultant                  http://www.yumetech.com/
Author, Java 3D FAQ Maintainer                  http://www.j3d.org/
-------------------------------------------------------------------
"Humanism is dead. Animals think, feel; so do machines now.
Neither man nor woman is the measure of all things. Every organism
processes data according to its domain, its environment; you, with
all your brains, would be useless in a mouse's universe..."
                                               - Greg Bear, Slant
-------------------------------------------------------------------

===========================================================================
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".

Reply via email to