CompuServe Messages

You've gotta love this forum. For 3D terrains, which I usually have to do accurately for architectural projects, is (if starting from scratch): digitize the contour lines from a survey if we don't get it on CAD, as polylines; move each polyline up in space to its proper elevation; hang surfaces between each pair of contour lines using the ruled surface command in ACAD, after selecting a Surftab setting that will give me the number of faces I need for accuracy and minimum mesh count; explode the surfaces into separate faces, and then in plan view stretch the vertices (if necessary) to align properly with features such as foundations (get under them), roads (slope to be at right angles to road surface generally); and so on. An accurate terrain can be modelled quickly using this method, and it produces good results. Anyway, glad you're on your way, and past surface #176,948. regards, gary