As he walked, the tiny pinpoints moved along the complex curved surfaces in an unpredictable way.

Architects can propose complex surfaces, where the properties of materials should push the design.

He made spheres of many sizes, with many different, often complex surfaces.

By contrast, for almost complex surfaces, the only constraint is:

Even on this scale, the complex surfaces are filled with soft smudges and calligraphic lines.

We don't want to make a complex surface outside, but this, the interior, these things are very Japanese.

The process is useful for producing complex surfaces.

It can also be used for complex surface grinding to finish work started on a mill.

More complex surfaces have radii of curvature that vary over the surface.