@pimms.param<EOL><INDENT>def tess(tris):<DEDENT>
if not isinstance(tris, Tesselation):<EOL><INDENT>try: tris = Tesselation(tris)<EOL>except Exception: raise ValueError('<STR_LIT>')<EOL><DEDENT>return tris.persist()<EOL>
mesh.tess is the Tesselation object that represents the triangle tesselation of the given
mesh object.