[Papervision3D] Optimizations

[Paulius Uza]

Hello everyone,

I dugg into PV3D sources looking for optimization points, and I found 
that PV3D is not using the int() fastpath in Arrays.

for example this is slow:
while( vertex = vertices[--i] )
and this is around 30% faster:
while( vertex = vertices[int(--i)] )

Good reads from Adobe on the topic:
http://www.onflex.org/ACDS/AS3TuningInsideAVM2JIT.pdf
and
http://www.onflex.org/ted/2006/09/max-actionscript-3-performance-tuning.php

Paulius Uza
CTO, Avenue Interactive