If your terrain is clean and connected, and softened-smoothed to one surface, With hidden geometry showing project image onto one face (or set the current face material to projected). Sample that face. Then with hidden geometry off, paint the whole surface. Or did you try this?

No. Once you change a curve to a solid all parametric input is gone. Fredo has some tools that can upsample though. In this instance it's as fast to just redo it. The difference between biased and unbiased is that biased uses a lot of guesswork to resolve the light. Unbiased is physically bouncing light to every pixel. Some biased settings are terribly slow and some blazing fast. It's a balancing act and in some cases a bewildering science.

The cylinders need to be a fixed size as they already exist. It's a matter of finding the ideal diameter where there is equal spacing @ all edges.

The shadows are missing because the foreground aerial image is in the way. Note the settings in the two screen shots. I turned off the foreground image in the second one and the shadows show just fine. By the way, it has nothing to do with the background image. I just made the background image lighter in the first to make it easier to see where shadows are being cast. [image: IT41_Screenshot-11_30_20164_45_24PM.png] [image: sECr_Screenshot-11_30_20164_46_01PM.png] Here's an image export from the file with the foreground image turned off. I also turned off shadows on ground. [image: xNJl_TechHelpFile.png]