MatrixHelpers.h

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//==========================================================================
//  AIDA Detector description implementation for LCD
//--------------------------------------------------------------------------
// Copyright (C) Organisation europeenne pour la Recherche nucleaire (CERN)
// All rights reserved.
//
// For the licensing terms see $DD4hepINSTALL/LICENSE.
// For the list of contributors see $DD4hepINSTALL/doc/CREDITS.
//
// Author     : M.Frank
//
//==========================================================================

#ifndef DD4HEP_IMP_MATRIXHELPERS_H
#define DD4HEP_IMP_MATRIXHELPERS_H

// Framework include files
#include "DD4hep/Objects.h"

// Forward declarations
class TGeoTranslation;
class TGeoRotation;
class TGeoHMatrix;
class TGeoMatrix;

namespace DD4hep {
  namespace Geometry {

    typedef Position XYZAngles;
  
    TGeoIdentity*    identityTransform();
    TGeoTranslation* _translation(const Geometry::Position& pos);
    TGeoRotation*    _rotationZYX(const Geometry::RotationZYX& rot);
    TGeoRotation*    _rotation3D(const Geometry::Rotation3D& rot);
    TGeoHMatrix*     _transform(const Geometry::Transform3D& trans);
    TGeoHMatrix*     _transform(const Geometry::Position& pos);
    TGeoHMatrix*     _transform(const Geometry::RotationZYX& rot);
    TGeoHMatrix*     _transform(const Geometry::Rotation3D& rot3D);
    TGeoHMatrix*     _transform(const Geometry::Position& pos, const Geometry::RotationZYX& rot);

    TGeoHMatrix&     _transform(TGeoHMatrix& mat, const Geometry::Transform3D& trans);
    TGeoHMatrix&     _transform(TGeoHMatrix& mat, const Geometry::Position& pos);
    TGeoHMatrix&     _transform(TGeoHMatrix& mat, const Geometry::RotationZYX& rot);
    TGeoHMatrix&     _transform(TGeoHMatrix& mat, const Geometry::Rotation3D& rot3D);
    TGeoHMatrix&     _transform(TGeoHMatrix& mat, const Geometry::Position& pos, const Geometry::RotationZYX& rot);

    Geometry::Transform3D      _transform(const TGeoMatrix* matrix);

    void _decompose(const Geometry::Transform3D& trafo, Geometry::Position& pos, Geometry::RotationZYX& rot);
    void _decompose(const Geometry::Transform3D& trafo, Geometry::Position& pos, XYZAngles& rot);
    void _decompose(const Geometry::Transform3D& trafo, Geometry::Translation3D& pos, Geometry::RotationZYX& rot);
    void _decompose(const Geometry::Transform3D& trafo, Geometry::Translation3D& pos, XYZAngles& rot);

    XYZAngles _XYZangles(const double* matrix);
    XYZAngles _XYZangles(const TGeoMatrix* matrix);

  } /* End namespace Geometry        */
} /* End namespace DD4hep            */

#endif // DD4HEP_IMP_MATRIXHELPERS_H