The routine IsFacetted returns true if the given polyhedron is of facetted form; false otherwise.

The command with(geom3d,IsFacetted) allows the use of the abbreviated form of this command.

$\mathrm{with}\left(\mathrm{geom3d}\right)\:$

$\mathrm{SmallRhombiicosidodecahedron}\left(p\,\mathrm{point}\left(o\,0\,0\,0\right)\,1.\right)$

$p$

$\mathrm{facet}\left(\mathrm{fp}\,p\,1\right)$

$\mathrm{fp}$

$\mathrm{IsFacetted}\left(\mathrm{fp}\right)$

$\mathrm{true}$

$\mathrm{draw}\left(\mathrm{fp}\,\mathrm{style}=\mathrm{patch}\,\mathrm{lightmodel}=\mathrm{light4}\,\mathrm{orientation}=\left[0\,30\right]\,\mathrm{title}=\mathrm{`Facetted\; Small\; Rhombiicosidodecahedron`}\right)$