#ifndef SPHERICALCOORDINATE_HH
#define SPHERICALCOORDINATE_HH
//
// $Id: SphericalCoordinate.hpp,v 1.6 1998/10/16 02:57:52 hobbs Exp $
//
// File: SphericalCoordinate.hh
// Purpose: Represent a 3D point in spherical coordinates.  Just a thin
//           shell around SphericalPoint
// Created: 02-SEP-1997   John Hobbs
//
// $Revision: 1.6 $
//
//

// Include files
#include <cmath>
#include <spacegeom/SpacePoint.h>

namespace dgs {
/** A SpacePoint in spherical coordinates.

    A spherical coordinate is specified by a radius $r$ (distance from
    the origin) and two angles, $\phi$ and $\theta$.  The angle $\phi$
    is measured in the $(x,y)$ plane, with $\phi = 0$ being the $x$
    axis, and $\phi = \pi/2$ the $y$ axis.  The angle $\theta$ is
    measured from the $z$ axis, with $\theta = 0$ being the $z$ axis.
    Access to the components of a spherical coordinate is through the
    member functions {\bf r()}, {\bf phi()} and {\bf theta()}.

*/
class SphericalCoordinate: public SphericalPoint {

public:

  ///  Default constructor.
  SphericalCoordinate(): SphericalPoint(0,0,0) {}

  ///  Construct local point at r, phi, theta.
  SphericalCoordinate( double r, double phi, double theta): 
    SphericalPoint(r,phi,theta) {}

  ///  Copy constructor
  SphericalCoordinate(const SpacePoint& lpt):
    SphericalPoint(lpt.rxyz(),lpt.phi(),lpt.theta()) {}

};
}
#endif // SPHERICALCOORDINATE_HH