mitkGantryTiltInformation.h

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/*===================================================================

The Medical Imaging Interaction Toolkit (MITK)

Copyright (c) German Cancer Research Center,
Division of Medical and Biological Informatics.
All rights reserved.

This software is distributed WITHOUT ANY WARRANTY; without
even the implied warranty of MERCHANTABILITY or FITNESS FOR
A PARTICULAR PURPOSE.

See LICENSE.txt or http://www.mitk.org for details.

===================================================================*/

#ifndef mitkGantryTiltInformation_h
#define mitkGantryTiltInformation_h

#include "mitkPoint.h"
#include "mitkVector.h"
#include "mitkPoint.h"

namespace mitk
{

class GantryTiltInformation
{
  public:

    // two types to avoid any rounding errors
    typedef  itk::Point<double,3> Point3Dd;
    typedef itk::Vector<double,3> Vector3Dd;

    GantryTiltInformation();

    void Print(std::ostream& os) const;

    GantryTiltInformation( const Point3D& origin1,
        const Point3D& origin2,
        const Vector3D& right,
        const Vector3D& up, unsigned int numberOfSlicesApart);

    static
    GantryTiltInformation
    MakeFromTagValues( const std::string& origin1String,
        const std::string& origin2String,
        const std::string orientationString,
        unsigned int numberOfSlicesApart);

    bool IsSheared() const;

    bool IsRegularGantryTilt() const;

    double GetMatrixCoefficientForCorrectionInWorldCoordinates() const;


    double GetRealZSpacing() const;

    double GetTiltCorrectedAdditionalSize(unsigned int imageSizeZ) const;

    double GetTiltAngleInDegrees() const;

  private:

    Point3D projectPointOnLine( Point3Dd p, Point3Dd lineOrigin, Vector3Dd lineDirection );

    double m_ShiftUp;
    double m_ShiftRight;
    double m_ShiftNormal;
    double m_ITKAssumedSliceSpacing;
    unsigned int m_NumberOfSlicesApart;
};

} // namespace

#endif