Multiplier Modifier 

 

Overview 

Strand Multiplier allows you to create multiple hairs at the same root based on parametric input. It can be used with guides or hairs but more commonly would be used on hair. Hair strands can be duplicated a number of times using the Count parameter and deformed at the root or the tip with the Spread, Fluff, and Offset options.

Use Multiplier operator to add volume to your hair and create effects like vegetation and dense fur.

 

Parameters 

• Strand Group
  If non-0, only strands belonging to this group will be multiplied.

• Random Seed
  Random seed to use when generating values for Spread, Fluff, and Offset parameters

• Probability
  Percentage of hairs that will generate copies. At 100% all hairs will generate copies. At 50% half of input strands will be copied.

• Twist
  Controls how much twisting is performed by newly added strands around each existing strand.

• Copies
  Number of copies that will be generated for each hair.

• Copies View Percent
  Use this parameter to determine how much of the total copies will be shown in viewport, use a low percent to increase viewport performance when using a high amount of copies. This parameter don`t affect the render count.

• Spread
  Controls by how much copied strands are pushed away in local X direction from their original strand.
  Use channel, ramp, and multiplier controls to vary this parameter along the surface and the length of the strand.

• Fluff
  Controls by how much copied strands are pushed away in local Y direction from their original strand. Use together with Spread parameter for volumetric spreading.
  Use channel, ramp, and multiplier controls to vary this parameter along the surface and the length of the strand.

• Shift
  Controls how the points of copied strands are offset in relation to the original strand along their local X axis.
  Use channel, ramp, and multiplier controls to vary this parameter along the surface and the length of the strand.

• Preserve Strand Lengths
  When on, the lengths of source strands will not be modified by this operator

• Preserve Original Strand
  By default all the parameters in the Multiplier modifier will affect the original strand. When this option is ON, the original strand will not be affected by any other parameter on this modifier.

• Ground Generated Strands
  When modifying the roots of the copied strands with parameters like Fluff, Spread or Shift, they may end up floating on the surface. Use this option to automatically ground all the roots to the surface.

• Target Strand Group
  Specifies the strand group to assigned to newly created strands.

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