Arrow Group Industries LM86 Manual do Utilizador Página 77

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© Next Limit Technologies 2010
Maxwell Render 2.5 User Manual
Chapter 10. Maxwell Materials | 77
F.16 Backlit single SSS Leaves
REFLECTANCE 0 REFLECTANCE 90
TRANSMITTANCE
ROUGHNESS
SCATTERING THICKNESS
BUMP
10.05 Coatings
Coatings are very thin layers that are placed on top of a BSDF. Because coatings are so
thin, they produce an effect called thin lm interference, which breaks up the light and
can cause a rainbow-like pattern. Think for example of spilling a drop of oil on a surface of
water. The very thin layer of oil will create interference patterns on the water. Coatings can
also be used to create rough materials with a clear coating. For example, a glossy white
plastic can be made combining a diffuse BSDF with a coating.
The main property of a coating is its thickness. The thickness is specied in nanometers
(nm). Thickness can be specied by a numerical value or through a weight map. To avoid
interference coloring, you should use higher thickness values such as 1 mm (1000000
nm).
Only one coating is allowed per BSDF. You can make a material using just a coating and
no BSDF, for example to create a bubble material. To do this, add a coating, right-clicking
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