Create a vector field based on simplex noise.

Input parameters:

1. Pl → Origin and orientation of noise.
2. Oc → Number of superimposed noise octaves.
3. Am → Amplitude of noise.
4. Ad → Decay factor for the amplitude in each layer.
5. Wl → Wavelength of strongest octave.
6. Wd → Decay factor for the wavelength in each layer.

Output parameters:

1. Fl → Field with randomly varying noise values.