"[GDS|Entropy]" <nomail@nomail> wrote:

> Here is the code which uses the single iso but gives many rocks, what I am
> trying to do is combine the Isosurface function from my bit that I adapted from
> Tek with the single iso method below so I can use a single iso and get many
> rocks but using my algorithm.

I think I understand.

Follow that code like this -
the moduli (AFAIK) produce intermittent values, for lack of a better way to
describe it - just the remainders.  Bread crumbs on the number line.

> //    2D cells: returns a random value for each unit square
for every square generate a random number,

> //    Noisy modulus. Makes a random centre for each stone
.... and then a random location,

> //    Randomized radius for tumbled stone shape
... with a random size

> //Displaced, vertically squashed spheres

and then make spheres.


>     function
>     {
>         f_Stone(x, y, z) - Radius * f_Rad(x, y, z)
>     }

so you take that first function, and subtract a varying value of f_rad from it
to get the overall value where the isosurface function equals zero.

To give a sort of 2D analogy, imagine making a heightfield and intersecting it's
isolated peaks with a plane at y=0.   You'd get irregular shaped 'disks'
scattered throughout the plane.

This just does sort of the same thing but it's in 3D, where the function of x,
y, and z equals zero, and the irregular shapes are in space, not a plane.

I will have to think a bit about how to take your pigment pattern method and
make it work as a single isosurface.
I think you will have to add or subtract something like leopard or spotted, or
just part of that original code function to get _your_ shape scattered
throughout a single isosurface like the example code.

Does that make sense?

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