Thanks that's what I had suspected, I knew there was a good reason why
I'd used the Sphere primitive in the first place. Problem of leaving a
project/api for a year then starting it again, I can't remember half the
reasons why I did bits the way I did (apart from the rather occational
documentation :)
And to Bob, I have read the SharedGroup/Link stuff recently but I think
from my understanding all the copies are the same where as I need to be
able to pick individuals and have differant appearances randomised
across them.
I'm running about 60-70MB with 300 spheres (each is a LOD with Near: 10
sides+Tex, Med: 8 sides+Tex and Far: PointArray size 3 AntiA) and ~200
ships, mostly cones with simular LOD but more are now simple VRML models
at the Near range. Each has a RasterLabel in a switch (soon to have 2
labels, one with multiline detailed info).
Get 2-20 fps on NT with ATIRage128Pro 32MB and 12-40 fps on W2K with
GeForce3 64MB.
Cheers,
Jason.
>>> [EMAIL PROTECTED] 01/08/2002 16:18:40 >>>
Hi Jason,
All "primitives" defined in com.sun.j3d.util.geometry by default share
the
geometry! So your technique will not have any efect on the Sun's
Sphere,
Box, Cone, Cylinder, etc... If you want NOT to share the geometry,
you'll
have to use the GEOMETRY_NOT_SHARED flag in the constructor. Just read
the
javadoc for the abstract Primitive class.
However, if you generate your geometry "by hand", then you should call
setDuplicateOnCloneTree(true) on your NodeComponent objects (including
but
not limited to Geometry) before using cloneTree(). From specs: "Leaf
Node
cloneTree behavior is determined by the duplicateOnCloneTree flag found
in
every Leaf Node's component data class and by the forceDuplicate
parameter"
Cheers,
Florin
-----Urspr�ngliche Nachricht-----
Von: Jason Taylor [mailto:[EMAIL PROTECTED]]
Gesendet: Montag, 29. Juli 2002 12:12
An: [EMAIL PROTECTED]
Betreff: [JAVA3D] reusing geometry?
Morning!
I'm feeling with drawl symptoms from j3d.org already. :)
Can someone confirm for me how you go about 'reusing geometry' in order
to
reduce memory usage.
What I've tried is;
newNode = node.cloneTree();
newNode.setAppearance(app);
addchild(newNode);
I had 4 basic source nodes with 3 different appearances for each to
build
300 objects in my scene.
When I tried the above instead of "newNode = new Sphere(...);" I didn't
see
any difference in the run time memory usage.
Is it because I'm using the basic Sun Sphere() ?
I couldn't find *any* examples in my collection that used "cloneTree"
but
that's the only function I've found that might help.
Cheers,
Jason.
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