Fractal mountains.

Signed-off-by: Jérôme Benoit <jerome.benoit@grenouille.com>
Fractal cube.

Signed-off-by: Jérôme Benoit <jerome.benoit@grenouille.com>
Parametric land.

Signed-off-by: Jérôme Benoit <jerome.benoit@grenouille.com>