Arrow Group Industries LM86 Bedienungsanleitung PDF herunterladen (Seite 75)

Maxwell Render 2.5 User Manual

Chapter 10. Maxwell Materials | 75

F.08 Asym + 0.5 (scattering) F.09 Asym + 0.5 (nal look) F.10 Asym -0.5 (scattering) F.11 Asym -0.5 (nal look)

Creating a single-sided translucent material

The “Single Sided” option is one of the most powerful features of the Maxwell Render

subsurface system. It allows you to simulate thin translucent materials without having to

model their thickness. When this option is checked, the surface shading will use the given

virtual thickness and ignore the volume scattering.

It used to be a bit of a challenge to simulate leaves, paper, lampshades and so on. It was

necessary to model the actual thickness of such objects to render them properly. You no

longer need to model the thickness of these types of thin materials because the Single

Sided option simulates a virtual thickness. You can also use a thickness map to simulating

more complex materials. The image on the left shows a typical leaves render without SSS.

The leaves are highly translucent and SSS is needed to simulate them properly. Without

SSS, they cast dark shadows and look like painted cards blocking the light, removing all

realism. On the right, you see a leaves image that was rendered using single sided SSS,

which looks much more realistic.

F.12 Leaves without SSS F.13 Leaves with Single sided SSS

Before starting to create the leaves, it is assumed you already know how to create a

translucent material (see above). Single sided SSS works in exactly the same way; the only

difference is that virtual thickness is used instead of modeled thickness. In this example

maps were used in nearly every slot to properly simulate the textures on the leaves. This

might look complicated at rst sight, but the idea is easy to understand with a bit of

practice.

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Arrow Group Industries LM86 Bedienungsanleitung Seite 75