A feature that a lot of people have asked is finally here as an addition in Thea's material system,
strengthening it even more. The Glass material is now enhanced by dealing also with interference
Interference is a phenomenon actually very common in life but rarely solved by render engines.
The phenomenon can be explained by the wave nature of light; multiple waves of light can
add to each other (when in phase) amplifying the end result or cancel each other (when out
of phase) zeroing the end result.
The interference can be seen very easily with very thin dielectrics (the thickness being on the
visible light wavelength order). Furthermore, the amplification and canceling described previously
is strongly wavelength dependent. We can see it very easily on bubbles, oily coatings and CDs.
File comment: Fly with thin wings and body showing interference phenomenon.
Fly.png [ 1.02 MiB | Viewed 3950 times ]
In Thea, we have added thin film interference as an extension of Glass material with the most
accurate solution of the phenomenon. Even more, the new material (ThinFilm) not only can stand
alone (for example, modeling a bubble) but also can be used as a very thin coating type (for
example, an oily layer on a metallic surface). Bump mapping is also possible now.
File comment: Metal with thin oily coating.
Metal_with_Thin_Film.png [ 307.62 KiB | Viewed 3957 times ]
File comment: A bumped bubble.
BumbedBubble.png [ 363.03 KiB | Viewed 3957 times ]