IMP: Sphere3D.h Source File

00001 /**
00002  *  \file Sphere3D.h   \brief Simple 3D sphere class.
00003  *
00004  *  Copyright 2007-2010 IMP Inventors. All rights reserved.
00005  *
00006  */
00007 #ifndef IMPALGEBRA_SPHERE_3D_H
00008 #define IMPALGEBRA_SPHERE_3D_H
00009 
00010 #include "SphereD.h"
00011 
00012 IMPALGEBRA_BEGIN_NAMESPACE
00013 
00014 
00015 
00016 //! Return a sphere containing the listed spheres
00017 /** \relatesalso SphereD<3>
00018     \note This method produces tighter bounding spheres if CGAL
00019     is used.
00020     \ingroup CGAL
00021  */
00022 IMPALGEBRAEXPORT SphereD<3>
00023 get_enclosing_sphere(const std::vector<SphereD<3> > &ss);
00024 
00025 //! Return a sphere containing the listed spheres
00026 /** \relatesalso SphereD<3>
00027     \relatesalso VectorD<3>
00028     \note This method produces tighter bounding spheres if CGAL
00029     is used.
00030     \ingroup CGAL
00031  */
00032 IMPALGEBRAEXPORT SphereD<3>
00033 get_enclosing_sphere(const std::vector<VectorD<3> > &ss);
00034 
00035 
00036 //! Return the radius of a sphere with a given volume
00037 /** \relatesalso SphereD<3>
00038  */
00039 inline double get_ball_radius_from_volume_3d(double volume) {
00040   return std::pow((.75/PI)*volume, .3333);
00041 }
00042 
00043 IMPALGEBRA_END_NAMESPACE
00044 
00045 #endif /* IMPALGEBRA_SPHERE_3D_H */