Sometimes, one wants to break up the light just a bit – either to give the impression of a window, or tree leaves, or just to make the background look more interesting, motivation be damned.
To achieve said neat-o pattern, one uses a cucaloris. Such as this one:
This is a ‘hard’ cucaloris, as it’s made of wood, and is, as such, hard. Duh, right? Some versions are varying degrees of opacity on a screen material, and those are called ‘soft’ cucalori (I’m not sure that’s the correct plural, but it looks better than ‘cucalorises’).
Obviously, the sharper the lines on the shadow, the more obvious the pattern is.
The classic example of breaking up the light for texture is the window blind pattern on a blank wall, but if you look at day exteriors, many of them have this cucaloris pattern.
When I googled “motivated lighting” to find an example, what came up number one in the image search? My photo from the Mind of Mencia ‘cockfight’ sketch. Awesome.