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#ifndef Alignment_CommonAlignment_Utilities_H
#define Alignment_CommonAlignment_Utilities_H
/** \namespace align
*
* Namespace for common calculations in alignment.
*
* $Date: 2007/10/08 15:22:08 $
* $Revision: 1.10 $
* \author Chung Khim Lae
*/
#include <map>
#include <memory>
#include <vector>
#include "CondCore/CondDB/interface/Time.h"
#include "CondFormats/Alignment/interface/Definitions.h"
#include "FWCore/ParameterSet/interface/ParameterSet.h"
class Alignable;
class AlignmentParameters;
class AlignmentLevel;
namespace align {
typedef std::vector<Scalar> Scalars;
typedef std::vector<GlobalPoint> GlobalPoints;
typedef std::vector<GlobalVector> GlobalVectors;
typedef std::vector<LocalPoint> LocalPoints;
typedef std::vector<LocalVector> LocalVectors;
typedef std::vector<Alignable*> Alignables;
typedef std::vector<AlignmentParameters*> Parameters;
typedef std::vector<std::unique_ptr<AlignmentLevel> > AlignmentLevels;
typedef std::map<std::pair<Alignable*, Alignable*>, AlgebraicMatrix> Correlations;
using RunNumber = cond::RealTimeType<cond::runnumber>::type;
using RunRange = std::pair<RunNumber, RunNumber>;
using RunRanges = std::vector<RunRange>;
/// Convert rotation matrix to angles about x-, y-, z-axes (frame rotation).
EulerAngles toAngles(const RotationType&);
/// Convert rotation angles about x-, y-, z-axes to matrix.
RotationType toMatrix(const EulerAngles&);
/// Find mother's position from the average of its daughters' positions.
PositionType motherPosition(const std::vector<const PositionType*>& dauPos);
/// Find matrix to rotate from nominal to current vectors.
/// Assume both sets of vectors have the same size and order.
RotationType diffRot(const GlobalVectors& current, const GlobalVectors& nominal);
GlobalVector diffR(const GlobalVectors& current, const GlobalVectors& nominal);
/// Find the CM of a set of points
GlobalVector centerOfMass(const GlobalVectors& theVs);
/// Correct a rotation matrix for rounding errors.
void rectify(RotationType&);
RunRanges makeNonOverlappingRunRanges(const edm::VParameterSet& runRanges, const RunNumber& defaultRun);
RunRanges makeUniqueRunRanges(const edm::VParameterSet& runRanges, const RunNumber& defaultRun);
} // namespace align
#endif
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