I need to "cut" with my building into the ground, as there are stairs in the underground level etc. When I just place the model, the normal ground will flow through my building. How can I "exclude" the earth ground from going into my model?
I tried with using terraforming, but with that its not possible to cut it "hard" enough - I cannot get a convincing transition using terraforming. The resolution is too low.
To make it more clear, here an example picture. The normal ground level will be on "ground level" and the "deeper than ground level" should still be visible.
If it makes any difference, I'm using blender for creating my models.
Many thanks in advance!