curlnoise2d

vector  curlnoise2d(float x, float y)

vector  curlnoise2d(vector xyt)

Computes a divergence free vector field based on the cross product of the derivatives of two Perlin noise functions.

The resulting vectors all lie along the X-Y plane.

Note This is not the same as projecting a curlnoise to a plane.

See noise and randomness in the VEX language guide for more information.