//
// $Id: ReferencePoint.cpp,v 1.7 2000/04/01 23:09:34 hobbs Exp $
//
// File: ReferencePoint.cc
// Purpose: 
// Created: 08-OCT-1997   John Hobbs
//
// $Revision: 1.7 $
//
//

// Include files
#include <geometry_system/components/ReferencePoint.hpp>
#include <geometry_system/components/CartesianCoordinate.hpp>

using namespace dgs;

// Global definitions
SpacePoint ReferencePoint::local_to_global(const CartesianCoordinate& lpt)
  const
//
// Purpose: 
// States:
//
{
  return GeometryElement::local_to_global(lpt);
}


CartesianCoordinate ReferencePoint::global_to_local(const SpacePoint& gpt) const
//
// Purpose: Convert a global point to its local point representation 
// States:
//
{
  return get_position().invert(gpt);
}

CartesianCoordinate ReferencePoint::xform_to_local(const GeometryXform& xf) const
//
// Purpose: Convert a (local)transform to local coordinates.   Lose the
//          rotation information.
//
{
  return CartesianCoordinate(xf[0],xf[1],xf[2]);
}

GeometryXform ReferencePoint::local_to_xform(const CartesianCoordinate& lpt) const
//
// Purpose: Create a transformation describing a point referenced to my origin.
//          with my rotation matrix.
//
{
  return GeometryXform(lpt.x(),lpt.y(),lpt.z(),0.0,0.0,0.0);
}

bool ReferencePoint::position_child_at(const CartesianCoordinate& lpt,
				       GeometryElement& kid)
//
// Purpose: Position a child surface or volume relative to me
// States:
//
{
  GeometryXform gxf = local_to_xform(lpt);
  gxf = get_position().apply(gxf);
  kid.set_position(gxf);
  return true;
}

std::ostream& dgs::operator <<(std::ostream& os, const ReferencePoint& me)
//
// Purpose: Dump the definition of the reference point
// States:
//
{
  os << "ReferencePoint " << me.get_position() << std::endl;
  return os;
}