Of the 13 original forest pieces, these 6 do not conform to the steep contours:
les ctverec mlazi.p3d (forest, square, copse)
les ctverec pruchozi_T1.p3d (forest, square, continuous)
les ctverec pruchozi_T2.p3d (forest, square, continuous)
les_su_ctver_mlaz.p3d (forest, square, mixed copse)
les_su_ctver_pruhozi_T1.p3d (forest, square, mixed continuous)
les_su_ctver_pruhozi_T2.p3d (forest, square, mixed continuous)
Although the T1 and T2 pieces don't conform to steep slopes in WrpEdit at the moment, they do work on level ground.
Used individually these T1 & T2 forest pieces produce a triangle of forest, T1 in the top right triangle of the cell and T2 in the bottom left triangle, when oriented at 0 degrees.
So when used together on the same cell they produce a square of forest.
These remaining 7 pieces do conform to the steep contours:
les ctverec dark.p3d (SOLID)
les ctverec.p3d (forest, square)
les trojuhelnik pruchozi.p3d (forest, triangle, continuous)
les trojuhelnik.p3d (forest, triangle)
les_su_ctver.p3d (SOLID)
les_su_ctver_pruhozi.p3d (forest, square, mixed type)
les_su_trojuhelnik (forest, triangle, mixed type)
Of those 7 pieces, les ctverec dark.p3d and les_su_ctver.p3d are SOLID forest pieces and cannot be entered.
With Resistance, there are new trees and 13 new forest pieces that are available.
Of these 13 pieces the following 5 pieces conform to slopes but are not enterable:
les ctverec geom.p3d (forest, square,)
les_nw_ctver.p3d (forest, new, square)
les_nw_ctver_pruhozi.p3d forest, new, square, continuous)
les_nw_jehl_ctver.p3d (forest, new, pine, square) - (This piece looks ok in WrpEdit, but it seems to have trouble finding textures in game.)
les_nw_jehl_mlaz.p3d (forest, new, pine, copse) - (This piece also looks ok in WrpEdit, but it seems to have trouble finding textures in game.)
les_nw_ctver_mlaz.p3d (forest, new, square, copse) is not visible, either in WrpEdit or in game, but nevertheless cannot be entered.
I do not know if it conforms to slopes or not.
These 4 pieces do not conform to slopes and like the original T1 and T2 forest squares are used in pairs on the same cell to produce a forest square:
les_nw_ctver_pruhozi_T1.p3d (forest, new, square, continuous)
les_nw_ctver_pruhozi_T2.p3d (forest, new, square, continuous)
les_nw_jehl_T1.p3d (forest, new, pine)
les_nw_jehl_T2.p3d (forest, new, pine)
The last 3 pieces do conform to slopes and can be entered:
les_nw_jehl_ctver_pruhozi.p3d (forest, new, pine, square, continuous) - (This piece looks ok in WrpEdit, but it seems to have trouble finding textures in game.)
les_nw_jehl_trojuhelnik.p3d (forest, new, pine, triangle)
les_nw_trojuhelnik.p3d (forest, new, triangle)
Hope this helps
Planck