# Clumping

## Overview

Causes the fibres in Input 0 to clump around the fibres in Input 1, the amount of clumping is based on the

## Inputs

Input | Description
--- | ---
0 Data Flow | Fibres
1 Data Flow | Fibres

## Clumping

Parameter | Description
--- | ---
Weight | an overall weight of the effect.
Weight Random | a means of randomizing the effect.
Tip/Base Attraction | how much the fibres attract to the tip/base of the clump, 1 is completely, 0 is none and -1 will actually push the fibre away.
Attraction Bias | controls where along the clump the transition from base to tip happens.
Min/Max Distance | defines a limit to how close and far the fibre will be attraction to the clump.
Twist | causes the fibres to twist themselves around the clump.
Fly Away | the higher the value the more fibres will fly away from the clump, adding a frizz effect.

## Geometry

Parameter | Description
--- | ---
Space | defines whether the clumping should be evaluated in Local or World space, this usually depends if you’re clumping around Fibres or a guide curve.
Maintain Length | by default Yeti tries to maintain the length of the fibres, in some circumstances this can lead to uneven looking results due to longer segment lengths - toggling this off helps produce smoother results with the side effect that the overall length of the fibre may be slightly different.
Length Handling | depending on the configuration of your graph there are situations ( especially when using guide curves ) when a fibre is longer than a clump, this can cause stray looking hairs. Turn this to Conform If Longer will cause fibres that are longer than a clump to conform to the length of the clump.

## Example

Maya File: `examples/yeti_clumpingExample.ma`