Speed tree groups.

There are a few freeware or old free versions of tree generating programs I've played with a couple, main problem is getting the polygons down to an acceptable level and find some way of importing into a program with a Trainz Exporter although I did manage to make some bushes, exported to DXF and imported into Gmax and redid all the texturing. I'd love to get my hands on Xfrog though. I've also tried the same technique a N3V used with the Treez pack again for bushes, basically a lot of flat planes arranged to give a 3d'ish effect.

Old version of Tree Generator was free or was a year ago but too many polygons, TreeD is better on polygons but pretty useless for trees unless you want them all looking pretty much the same but ok for bushes if you attack the mesh in 3ds or Gmax.

This is an issue with a lot of 3d programs. The purpose for the trees is to sit there in a still scene. They also export oddly as well with round blobs for leaf clumps which doesn't look right.

World Builder, from Digital Element, is a bit different, sadly they trees can't really be exported since they suffer from the same problems with the huge number of faces. This program, however, uses procedurally developed trees to fill a scene very similar to how we want to place tress in Trainz. There are the flipboard trees, made up of slices of images, the cross-branch poly trees like Auran's Treez and your bushes, and there are the full model trees with higher polygons. Each of these serve a purpose in the program. Like the Speed Trees, their high-poly trees will blow in the wind, and can even have other physics applied to them. What I do like about placing trees in World Builder, unlike in Trainz, is the ability to select areas for their growth. This is done in a map view using selected areas. The trees can then be given growth parameters, such as height, random branches, clumps, numbers, etc., so that they can be as thin or as thick as needed. For us this would be a perfect method for forestation in our virtual world as well.

John
 
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