Hi,
Yes,This is a CityEngine screenshot.The main CGA as below:
Tunnel-->
extrude(world.y,10)
center(xz)
comp(f){world.up:Tunnel_tex}
Tunnel_tex-->
extrude(world.y,10)
alignScopeToGeometry(yUp, 0,2)
i(SuiDao_modPath) // replace by obj file
and the sloped tunnels is needed.Any good way to slove this problem?