Pull particles towards a particular scalar value in a field generated by point charges (metaballs)

Вводные параметры:
Charges (Point (Точка))
Centers of the metaballs
SurfacePt (Point (Точка))
Point to pull onto the metaball surface
Threshold (Number (Число))
Level in the field to pull particles to
Strength (Number (Число))
Strength of the pulling force

Результирующие параметры:
L (Generic Data (Общие данные))
LevelSet out