Another useful POV-Tree feature could be ability to apply
to the tree such effects as wind and gravity. I'm planning
to implement that as two sliders in preview panel. A
horizontal slider could represent a wind and a vertical
one could represent a gravity.

As far as I understand this falls into particle systems
category of CG. Does anybody have a good reference to
this subject (preferably on-line?

POV-Tree uses the same algorithm as TOMTREE to generate
tree model. The whole tree is represented in POV-Tree as
an array of Blob objects. Blob object in turn has three
attributes:

blob center - x, y, z coordinates
blob radius
blob strength (not used)

Should I add more attribute(s) to the Blob object to
participate in particle algorithm? Maybe index of
that Blob object in the array would be enough (?)

And here is a pretty Java applet demonstrating loosely
coupled particles which I think I have to implement:

http://v3ga.free.fr/Java/SodaTry/index.htm

Thanks in advance!

Gena.

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