As you may see or think the castle is made of an heightfield painted in Image,
the landscape too. For the landscape closeup I do the blob-field-trick
as described at "the dancers".
The sandcastle was envisaged to be an isosurface of sand and the heightfield as
color-function included. But unfortunately I discovered that this setup is
unefficient in rendering (technically works, but i couldn't find a setup sufficient in precision and fast enough in rendering - i can pass the code if someone is interested)
So I changed to the blob-field trick, with 1/2 a million components and additional angular correction for the "walls". Finally i do a 'real sand' overlay, which is another 1/2 million blob field.
The faked vegetation i intended to be as simple as possible, so I did an intersection between a crispy isosurface and another blob-field, which components are height dependend in size. It was done this way because i originally intended to use focal blur on the background, but again i wasn't very lucky deciding between precision in front and back of the image and again rendering time.
The glass-marbles and hag stones are Isosurfaces and have gone through an evolution-process as well, but this was only done to get the original intented shapes and look.
