Intercept.h

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#ifndef Intercept_h
#define Intercept_h

#include <QSharedPointer>

#include "AbstractPlate.h"
#include "NaifDskApi.h"

namespace Isis {

  class Angle;
  class SurfacePoint;
  
  class Intercept {
    public:
      Intercept();
      Intercept(const NaifVertex &observer, const NaifVector &raydir,
                SurfacePoint *ipoint, AbstractPlate *shape);
      virtual ~Intercept();
  
      bool isValid() const;
  
      const NaifVertex &observer() const;
      const NaifVector &lookDirectionRay() const;
      SurfacePoint location() const;
  
      NaifVector normal() const;
      Angle emission() const;
  
      Angle separationAngle(const NaifVector &raydir) const;
  
      const AbstractPlate *shape() const;
  
    private:
  
      enum ErrAction { Throw,  
                       NoThrow 
      };  // Error mode to employ
  
      bool verify(const bool &test, const QString &errmsg,
                  const ErrAction &action = Throw) const;
  
      NaifVertex m_observer; 
      NaifVector m_raydir;   
  
      QSharedPointer<SurfacePoint>  m_point; 
      QSharedPointer<AbstractPlate> m_shape; 
  
  };

};  // namespace Isis
#endif