EmbreeShapeModel.h

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#ifndef EmbreeShapeModel_h
#define EmbreeShapeModel_h

#include "ShapeModel.h"

#include <vector>

#include <embree2/rtcore.h>

#include <QMap>
#include <QVector>

#include "Distance.h"
#include "EmbreeTargetShape.h"
#include "EmbreeTargetManager.h"
#include "SurfacePoint.h"
#include "Target.h"

namespace Isis {
  class Target;

  class EmbreeShapeModel : public ShapeModel {
    public:
      // Constructors
      EmbreeShapeModel();
      EmbreeShapeModel(Target *target, Pvl &pvl,
                       EmbreeTargetManager *targetManager);
      EmbreeShapeModel(Target *target, const QString &shapefile,
                       EmbreeTargetManager *targetManager);

      // Destructor
      virtual ~EmbreeShapeModel();

      // Intersect the shape model
      virtual bool intersectSurface(std::vector<double> observerPos,
                                    std::vector<double> lookDirection);
      virtual bool intersectSurface(const Latitude &lat, const Longitude &lon,
                                    const std::vector<double> &observerPos,
                                    const bool &backCheck = true);
      virtual bool intersectSurface(const SurfacePoint &surfpt, 
                                    const std::vector<double> &observerPos,
                                    const bool &backCheck = true);

      virtual void clearSurfacePoint();

      virtual bool isDEM() const;

      double getTolerance() const;
      void   setTolerance(const double &tolerance);

      // Calculate the default normal of the current intersection point
      virtual void calculateDefaultNormal();
      // Calculate the surface normal of the current intersection point
      virtual void calculateLocalNormal(QVector<double *> cornerNeighborPoints);
      virtual void calculateSurfaceNormal();
      QVector<double> ellipsoidNormal();

      virtual double incidenceAngle(const std::vector<double> &uB);

      virtual Distance localRadius(const Latitude &lat, const Longitude &lon);

      // Determine if the internal intercept is occluded from the observer/lookdir
      virtual bool isVisibleFrom(const std::vector<double> observerPos,
                                 const std::vector<double> lookDirection);

    private:
      // Disallow copying because ShapeModel is not copyable
      Q_DISABLE_COPY(EmbreeShapeModel)

      void updateIntersection(const RayHitInformation hitInfo);
      RTCMultiHitRay latlonToRay(const Latitude &lat, const Longitude &lon) const;
      RTCMultiHitRay pointToRay(const  SurfacePoint &point) const;
      QVector< RayHitInformation > sortHits(RTCMultiHitRay &ray,
                                            LinearAlgebra::Vector &observer);

      EmbreeTargetShape   *m_targetShape;   
      EmbreeTargetManager *m_targetManager; 
      double               m_tolerance;     
      QString              m_shapeFile;     
  };
};

#endif