Grow
The Grow node is used to create fibres ( fur/hair ) using input particle locations as the seed for each fibre. Yeti loops over each input particle and determines various potential attributes for each which may include length and direction. The new fibres will follow the final resolved direction ( which defaults to $N ) and will be made up of Segment Length long segments. Grooms and Guides can be used as a second input which are sampled for their length which is applied to the final potential length of a Fibre - this will only set the length of the fibre with a Comb or Guide node needed to set the shape/direction downstream.
Inputs
| Input | Type | Description |
|---|---|---|
| 0 | Data Flow | Particles |
| 1 | Strands | Groom/Guide Curves used to control the length of the created fibres. |
Parameters
| Parameter | Description |
|---|---|
| Direction | Specify the direction of the fibre, defaults to $N which is the surface normal. |
| Minimum/Maximum Length | The shortest and longest possible lengths for the fibres, these may be modulated by any input Strand lengths. |
| Length Multiplier | A means of increasing the overall length of the fibres. |
| Length Bias | Used to control if the bias between the number of shorter and longer fibres. 0 is evenly distributed, -1 means mostly short fibres and 1 is mostly long fibres. |
| Segment Count | The number of segments per fibre. |
| Inherit Attributes | Defines a list of attributes, each separated by a space, that will be inherited from the geometry the fibres are growing from. |