Trees stop at slopes

[Crayox]

Hi guys,
any ideas why Forest isn't distributing my trees at these slight slopes? I'm not using any slope or height thresholds or anything like that. I only use 2 surfaces and a spline to include where the trees go. I'll post a MAX file but maybe it's obvious to someone what is wrong just from the screen cap
Thx

[Paul Roberts]

HI,

Have you told Forest Pack to update the Surface since modelling the slopes? There's an autoupdate option in the Surface rollout too. This still catches me out sometimes.

Paul

[Crayox]

Yeah, tried refresh but everything was modeled before I added FP.

[Paul Roberts]

Is there any chance the normals are flipped for that section? It's probably easiest if you upload the problematic surface so we can take a closer look.

Best,
Paul

[Crayox]

Don't think so. Here's the file.
https://www.dropbox.com/s/de98lcs78jja0kh/FP%20issue.max?dl=0

[Paul Roberts]

PLease reset the XForm for the surfaces, that would appear to fix it. In XY Mode, Forest Pack expects the Z-axis of the surface object to align with the FP object's local Z axis.

Cheers,

Paul

[Crayox]

Aaah shit...I think I had a similar issue already and asked about it before and forgot about the XForm! Sorry, thanks!!! Now you know, when someone has a stupid issue like that just say reset the XForm

[Paul Roberts]

Normally the first thing I think of. I blame the fact that it's Monday.