Giulio has written a perlin and simplex noise components, he'll make these public sometime in the future in the meantime send me an email.

cheers

Evert

Hi JLX,

in the Grasshopper scripting on RhinoCommon here at McNeel Europe I teach to program a component that does this, in C# and Vb.Net. Grasshopper contains a 1D Perlin noise function (similar to sines summations), but this functionality cannot be directly extended to more dimensions.

I am attaching this additional assembly that forms smooth Perlin noise and Simlex noise, two very well-known smooth noise functions studied by Ken Perlin. Inputs are:

- a point pt: the location to sample
- a number (double) t: the "location" in time
- a scale (number): a multiplier to change the scale of the values passed by pt and t

To install this component:

- download PerlinSimplexNoise.gha to your desktop
- right click the file and choose "Unblock" (might not be necessary, but please do it)
- from the Grasshopper interface, choose File -> Special folders -> Components Folder.
- move PerlinSimplexNoise.gha to that folder (ends with "\Libraries")
- restart Rhino. You'll find the components in the Math tab!

If you want to know more, I suggest to check Simplex noise demystified, by Stefan Gustavson.

- Giulio
__________________
giulio@mcneel.com
McNeel Europe, Barcelona

New release on Food4Rhino

Amazing, thanks a lot Giulio. You rock!