Wrapped Circular Anisotropic
SHADER TYPE: Wrapped Circular Anisotropic
Wrapped Circular Anisotropic is a reflectivity type that is used to create a surface with small, repetitive, concentric circular patterns, such as grooves or dents. The surface pattern is created using thin cylinders. This shader type is suitable for brushed metals, for example.
The centre point of the circular pattern is defined as (0.5,0.5) in the pattern layout. The horizontal and vertical frequency of the pattern is defined by the "Width" and "Height" parameters.
The surface is laid out according to the Texture co-ordinate axes, so 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 smaller the factor, the sharper the reflection. High values like 10 make the surface less mirror-like |
| Specular Colour | Colour of the specular points | (255,255,255) | All RGB values |
| Floor Height | Height of the pattern | 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. |
| Width | Horizontal frequency of the pattern | 1 | At 0 the pattern is not duplicated |
| Height | Vertical frequency of the pattern | 1 | At 0 the pattern is not duplicated |
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
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 Width: 1 Height: 1 |
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 Width: 1 Height: 1 |
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 Width: 1 Height: 1 |
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 Width: 1 Height: 1 |
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 Width: 1 Height: 1 |
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 Width: 8 Height: 8 |
Ambient Factor: 1.2 Diffuse Factor: 0.95 Specular Factor: 0.8 Roughness: 5 Specular Colour: (255,255,255) Floor Height: 0.8 Cylinder Distance: 1 Width: 8 Height: 8 |
Ambient Factor: 1.2 Diffuse Factor: 0.95 Specular Factor: 0.8 Roughness: 5 Specular Colour: (255,255,255) Floor Height: 0.8 Cylinder Distance: 3 Width: 8 Height: 8 |
Ambient Factor: 1.2 Diffuse Factor: 0.95 Specular Factor: 0.8 Roughness: 5 Specular Colour: (255,0,0) Floor Height: 0.8 Cylinder Distance: 3 Width: 8 Height: 8 |
Colour: Plain Colour (150,150,150) Reflectivity: Wrapped Circular Anisotropic Ambient Factor: 1 Diffuse Factor: 1 Specular Factor: 0.5 Roughness: 5 Specular Colour: (255,255,255) Floor Height: 0.8 Cylinder Distance: 1 Width: 8 Height: 8 |