Reoarhitectura
Photo Nr. 13

The plasticization of the nfc-frontiers volumerized through rounding off and roughing (coging)

In order to become more suggestive, nfc, both the surfaces (fig. 7.107 -> 7.110) und the frontiers become rounded, softening the too vivid edges.
Another method to obtain grafical effects from the lines -volumetric frontiers is alternate roughing of the componente bars (fig.7.111)
Obvious, for every nfc there are possible two "antagonistic" solutions which, at aggregation, are reciprocally complete.