My project is to illustrate a boatyard. Included in the scene will be various objects. The important ones, for this question are a saw-pit, building ways, and a dry dock. All of these are hollow blocks ( think swimming pools) with objects within them, such as a man standing at the bottom of a saw-pit. I did a test object, in C4D, of a cube with a smaller cube subtracted from it. In the developing program I rendered a jpg (attached) that shows it actually has a bottom. The preview in TG3 also indicates a bottom. When I place this on a terrain and lower it partway both the terrain and the water enter the object. [You could say it is not waterproof!]
Is there some way I can make these hollow objects actually work. If not I'm going to have to use a really crummy terrain feature of C4D.
Thanx,
Ed