3D trees, how are they done?

esaptonor · Post by **esaptonor** » Sat Apr 08, 2006 9:44 am

I have noticed in games trees sometimes can look weird - if you stand under them and look up, then turn, the leaves will turn too!

i need to make a 3D tree model, and since i noticed those funny things, i assume that trees are not just a modelled trunk and 10 thousand modelled leaves....how is it done? are the leaves on billboards or something?
thanks,
André

vermeer · Post by **vermeer** » Sat Apr 08, 2006 10:11 am

trunk modeled low pol

big quads in cross, each containing the image of a bunch of leaves.importantly, is an alpha tetxure

several so.

or using free tremagik (basicly a prefab what I mentioned above)

if u can go hi pol, there are methods to ouput an averagely mid count tre out of arbaro . arbaro.sourceforge.net You'd need java jre.

yet though, the trunk and branches are spearate objetcs. I usually take my time on welding em at vertex level.

this would be ideal if u plan on using some LOD method, like replacing the tree each distance, so that finally they maybe only a singlebillboard, or brute force methods that automatically reduce poly count with distance.

dunno what is possible in irrlicht, I guess you may have to build your own if not.

bitplane · Post by **bitplane** » Sat Apr 08, 2006 1:40 pm

and here's a thread with three tree options

http://irrlicht.sourceforge.net/phpBB2/ ... hp?p=71939

RapchikProgrammer · Post by **RapchikProgrammer** » Tue Apr 11, 2006 3:38 pm

I love u bitplane! (In the sense of a friend liking a friend in friendly terms that is)

The procedural trees are amazing and i never even knew that such a post existed! Thanks mate!