XGen question tree on hills

[stezzaboy]

I have some rolling hills and placed trees along the edge rows.

The tree where place "At specified locations" using achieved tree file. But the trees are growing from the face normal but I need them to just grow vertically how do I achieve this on undulating hills?

[Gabriel84120]

Quote from http://forums.cgsociety.org/archive/index.php/t-1189813.html

DutchDimension

06-23-2014, 10:41 AM

To align primitives to a world vector, you can use the TiltU, TiltV and TiltN attributes on your XGen description by driving them with the align functions.

alignU([0,1,0])
alignV([0,1,0])
alignN([0,1,0])

cheers !

[stezzaboy]

thank you very much for our reply thats a great help as i still need to fix this issue.
Kind regards

steve