Hi Dennis,

Dennis Miller wrote:
> 
> That's really sharp. I am trying to turn that into a function for an
> isosurface but am having some trouble. Might you assist?
> Dennis
> 

I don't think you can make a sensible isosurface of it - each cusp
represents a discontinuity in the function and isosurfaces tend to give
up and sulk at that point ...

Mike Andrews.

PS: changing fn_Cusp to ...

#declare fn_Cusp = function {
fn_Rad(f_snoise3d(x/2,0,z/10),0,f_snoise3d(x/10,100,z/2)).x }

... makes a nice wet-on-wet watercolour varaition.

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