The cdd backend for polyhedral computations, floating point version

class sage.geometry.polyhedron.backend_cdd_rdf.Polyhedron_RDF_cdd(parent, Vrep, Hrep, **kwds)[source]

Bases: Polyhedron_cdd, Polyhedron_RDF

Polyhedra over RDF with cdd.

INPUT:

  • ambient_dim – integer; the dimension of the ambient space

  • Vrep – list [vertices, rays, lines] or None

  • Hrep – list [ieqs, eqns] or None

EXAMPLES:

sage: from sage.geometry.polyhedron.parent import Polyhedra
sage: parent = Polyhedra(RDF, 2, backend='cdd')
sage: from sage.geometry.polyhedron.backend_cdd_rdf import Polyhedron_RDF_cdd
sage: Polyhedron_RDF_cdd(parent, [ [(1,0),(0,1),(0,0)], [], []], None, verbose=False)
A 2-dimensional polyhedron in RDF^2 defined as the convex hull of 3 vertices

>>> from sage.all import *
>>> from sage.geometry.polyhedron.parent import Polyhedra
>>> parent = Polyhedra(RDF, Integer(2), backend='cdd')
>>> from sage.geometry.polyhedron.backend_cdd_rdf import Polyhedron_RDF_cdd
>>> Polyhedron_RDF_cdd(parent, [ [(Integer(1),Integer(0)),(Integer(0),Integer(1)),(Integer(0),Integer(0))], [], []], None, verbose=False)
A 2-dimensional polyhedron in RDF^2 defined as the convex hull of 3 vertices