Returns a field whose values are the curl of the input vector field. The curl of a vector field can be thought of as the local rotation of the vector flow. It is itself a vector field, where the direction represents the axis of rotation, and the length represents the magnitude of rotation. The curl of a field F is sometimes denoted by ∇×F, or by rot F. It should not be confused with curl noise, which is a divergence-free vector field computed from the curl of a modulated noise field.
The input vector field.
The resulting field.