Reflectancy

SHADER TYPE: Wrapped Anisotropic

Wrapped Anisotropic is a reflectivity type that is used to create a surface with a parallel pattern, such as grooves or dents. The surface pattern is created using thin cylinders. This shader type is suitable for brushed metals, for example.

The surface direction is defined from the axial directions, which have been assigned to the object with the Texture shader. The cylinders are inserted at a 90-degree angle to the vertical axis. Inserting the correct co-ordinates is essential for achieving the desired effect.

Parameter: Explanation: Default value: Possible values and comments:
Ambient Factor Reflectivity factor of ambient light 1
Diffuse Factor Reflectivity factor of diffuse light 0.5
Specular Factor Specular factor 0.5
Roughness Reflection sharpness factor 0.1 The larger the factor, the sharper the reflection. High values like 10 make the surface more mirror-like.
Specular Colour Colour of the specular points (255,255,255) All RGB values
Floor Height Height of the cylinder surface 0 0–1, at 0 there is no surface at all, at 1 the surface is smooth and isotropic
Cylinder Distance Cylinder distance factor 1 The factor affects the anisotropy of the surface. The value 0 yields a normal isotropic reflection, the value 2 the greatest anisotropy. At values above 2, the cylinders reflect light isotropically, and there are smooth areas between them.

 

examp2.gif (16612 bytes)
An example with its default values:
Object Colour: (0,0,170)
Reflectivity: Matte 1 1
Background: Clouds 10 (120,190,255) (200,255,255) 3
Ambient Light: 0.55 (255,250,245) TRUE
Distant Light: 0.65 (255,255,255) (19610,-6767,17933) (0,0,0) TRUE 2048 9 1 (255,255,255) TRUE
wranis1.gif (14798 bytes)
Ambient Factor: 1
Diffuse Factor: 0.5
Specular Factor: 0.5
Roughness: 0.1
Specular Colour: (255,255,255)
Floor Height: 0
Cylinder Distance: 1		 wranis2.gif (15622 bytes)
Ambient Factor: 1
Diffuse Factor: 0.95
Specular Factor: 0.5
Roughness: 0.1
Specular Colour: (255,255,255)
Floor Height: 0
Cylinder Distance: 1
wranis3.gif (14263 bytes)
Ambient Factor: 1.2
Diffuse Factor: 0.95
Specular Factor: 0.5
Roughness: 0.1
Specular Colour: (255,255,255)
Floor Height: 0
Cylinder Distance: 1		 wranis3b.gif (12027 bytes)
Ambient Factor: 1.2
Diffuse Factor: 0.95
Specular Factor: 0.8
Roughness: 0.1
Specular Colour: (255,255,255)
Floor Height: 0
Cylinder Distance: 1
wranis4.gif (15393 bytes)
Ambient Factor: 1.2
Diffuse Factor: 0.95
Specular Factor: 0.8
Roughness: 5
Specular Colour: (255,255,255)
Floor Height: 0
Cylinder Distance: 1		 wranis5.gif (15395 bytes)
Ambient Factor: 1.2
Diffuse Factor: 0.95
Specular Factor: 0.8
Roughness: 5
Specular Colour: (255,255,255)
Floor Height: 0.5
Cylinder Distance: 1
wranis6.gif (16260 bytes)
Ambient Factor: 1.2
Diffuse Factor: 0.95
Specular Factor: 0.8
Roughness: 5
Specular Colour: (255,255,255)
Floor Height: 0.5
Cylinder Distance: 0.5		 wranis7.gif (12661 bytes)
Ambient Factor: 1.2
Diffuse Factor: 0.95
Specular Factor: 0.8
Roughness: 5
Specular Colour: (255,255,255)
Floor Height: 0.5
Cylinder Distance: 2
wranis8.gif (17757 bytes)
Ambient Factor: 1.2
Diffuse Factor: 0.95
Specular Factor: 0.8
Roughness: 5
Specular Colour: (255,0,0)
Floor Height: 0.5
Cylinder Distance: 2

 

wraniexa.gif (21847 bytes)
Colour: Plain
Colour (150,150,150)

Reflectivity: Wrapped Anisotropic
Ambient Factor: 1
Diffuse Factor: 1
Specular Factor: 0.4
Roughness: 5
Specular Colour: (255,255,255)
Floor Height: 0.5
Cylinder Distance: 0.5

Translucency
Phong

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