Are prickles present (armed structure), absent (unarmed structure), or both (armed or unarmed)?
Prickles frequency.
Prickles length in milimeters (mm).
Orientation of prickles.
Prickles persistance.
Source.
Sets the length values, considering the value of present.
The minimum length value in milimeters (mm).
The maximum length value in milimeters (mm).
Creates an instance of prickles.