Maxon Cinema 4D Studio R15 Manual descargar pdf (Pagina 16)

Materials

3. Quick Tutorial: Materials

A well-modeled object can make a mediocre impression if the right textures aren’t used. Textures give a model

color, highlights, structure and other important surface properties. A texture placed into the Bump channel,

for example, gives the object’s surface an uneven, bumpy look without actually altering the geometric

structure. This effect can be used to imitate skin wrinkles, scars or the surface of an orange. The displacement

channel works in a similar fashion, only that it actually does change an object’s geometric structure. Using

the Luminance channel you can give an object’s surface a self-illuminating property or integrate a subsurface

scattering effect (sub-surface scattering) which lends the surface a slight translucent/reﬂective look, like

human skin or candle wax, for example. In short: Textures have the same signiﬁcance as the outer shape of

an object because they are necessary for achieving the desired atmosphere, coloring and surface structure.

We will begin with a brief introduction to the individual material channels:

Color: This is where the material’s color or the base color for the texture is set.

Diffusion: This channel makes your texture irregular. Through the application of a shader or a texture

your object receives a dirty or dusty look. If desired it can also inﬂuence the Specular, Reﬂection and

Luminance channels respectively.

Luminance: The material is given an illuminative property which is also taken into account in the

Global Illumination calculation.

Transparency: This is where you determine the material’s transparency.

Reﬂection: Gives the material reﬂective characteristics.

Environment: A texture is used to simulate an environment reﬂection.

Fog: This channel lets you apply a fog property to a material.

Bump: Uses an optical trick to translate light and dark elements of a texture or a shader to simulate

the height and depth of an uneven surface. Scars, wrinkles or scratches can be simulated using this

channel.

Normal: This channel is meant for use with normal textures. Normals give a low-res polygon object

a hi-res look when RGB textures containing the required properties are applied. This lets a hi-res

polygon object be replaced by a low-res object, thus saving a lot of render time and offering the same

visual result.

Alpha: A texture’s transparency is determined by a material’s light and dark areas. Black equals a

transparency of 100 % and white makes it opaque.

Specular: This determines a material’s specular and color properties.

Glow: Gives the object a self-emitting glow.

Displacement: Deforms an object using light and dark values (calculates differences in height). Do not

confuse this with the Bump channel which only imitates an uneven surface.

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Maxon Cinema 4D Studio R15 Manual Pagina 16