New AFC Hair shader for FiberFX


Pilkington the chimp, using AFC hair. Image courtesy Mauro Corveloni

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AFC stands for Artist-Friendly Controls. AFC Hair, like other hair materials, is also a dielectric material. The specular settings are divided into two sections. Primary is concerned with reflections of the front side of the stroke. The secondary specular is for the reflection bounced off the backside of the stroke, through what's called the cortex color inside the hair cylinder.

Primary Specular

  • Highlight Color - The color for the highlight for the stroke facing the camera
  • Highlight Intensity - How strong the highlight is
  • Highlight Width - For how far along the hair the highlight shows
  • Highlight Shift - The distance along the hair for the highlight

Secondary Specular

  • Secondary Highlight Color -The color for the highlight for the stroke facing away from the camera
  • Secondary Highlight Intensity - How strong the highlight is
  • Secondary Highlight Width - How far along the hair the highlight shows
  • Secondary Highlight Shift - The distance along the hair for the highlight

Transmission

  • Transmission Color - The color that transmits through the hair by reflection
  • Transmission Intensity - How much the Transmission Color affects the hair's visible color
  • Transmission Width - How far long the hair the transmission occurs
  • Transmission Shift - How the transmission slides along the hair
  • Transmission Azimuth Width - The distance "around" the hair transmission occurs

Glint

  • Glint Color - The color of the tertiary highlight
  • Glint Intensity - How intense the glint is
  • Glint Width - How far along the hair the glint occurs