Swirl
Push particles round an object's Z axis, and in toward it or out: whirlwinds, whirlpools, tornadoes and spiralling magic.
Push particles around an object's Z axis, and in toward it.
- Add it
- EventAdd OperatorForcesSwirl
- Sends on
- Nothing: it has no wire.
- Influence
- Yes: it does as much as a value says, particle by particle (0 none, 1 all of it).
When to use it
Anything that goes round: a tornado of debris, a whirlpool, leaves caught in a gust, a spell spiralling up. Place an Empty where the middle is and point its Z axis along the whirl's axis.
Settings
As the flow editor’s sidebar shows them. Changing any of them marks the bake old; those marked Keyframable can also change through a bake.
One of the flow’s number values, to weigh it by, particle by particle. Empty for all of it, on all of them. See Influence.
Strength pushes particles round the object's Z axis: counter-clockwise seen from above, looking down the axis from its tip. Negative goes the other way. Pull In pushes them in toward the axis (negative: out), so they spiral. Reach fades both out to nothing at that distance from the axis; 0 reaches everywhere.
Swirl pushes; it doesn't hold particles in orbit. With no Pull In, they're flung out as they speed up. A little Pull In and some Drag keep them circling.
Works with
- Attract or a negative Gravity to draw them up the funnel.
- Influence: a value can weigh it particle by particle.
Problems you may see
The editor raises no problems of its own for Swirl.