Try in your trace loop

#if(vdot(y,vnormalize(Norm))>0.9725)

where 0>.9725 is the flatness of the angle of flatness you want.

or

#if (VAngleD(Norm, y) < 20)  from math.inc which you need to include


This will place trees only on the flatter parts of your height field.

Thanks to Tor OLav Kristensen

Mick

Post a reply to this message