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// G4LogicalCrystalVolume
//
// Class description:
//
// Specialised logical volume for the description of crystals.
// The object can be created only with an extended material
// with a crystal extension. The class handles the orientation
// of the crystal axes wrt the solid to which the crystal is attached.

// 21-04-16, created by E.Bagli
// ---------------------------------------------------------------------------
#ifndef G4LOGICALCRYSTALVOLUME_HH
#define G4LOGICALCRYSTALVOLUME_HH 1

#include <vector>
#include "G4LogicalVolume.hh"

class G4CrystalExtension;
class G4ExtendedMaterial;

class G4LogicalCrystalVolume : public G4LogicalVolume
{
  public:

    G4LogicalCrystalVolume(G4VSolid* pSolid,
                           G4ExtendedMaterial* pMaterial,
                           const G4String& name,
                           G4FieldManager* pFieldMgr = nullptr,
                           G4VSensitiveDetector* pSDetector = nullptr,
                           G4UserLimits* pULimits = nullptr,
                           G4bool optimise = true,
                           G4int h = 0,
                           G4int k = 0,
                           G4int l = 0,
                           G4double rot = 0.0);

    ~G4LogicalCrystalVolume();
    
    G4bool IsExtended() const { return true; }
      // Return true if it is not a base-class object.

    void SetMillerOrientation(G4int h, G4int k, G4int l, G4double rot = 0.0);
      // Set physical lattice orientation, relative to G4VSolid coordinates
      // Miller orientation aligns lattice normal (hkl) with geometry +Z
    
    const G4ThreeVector& RotateToLattice(G4ThreeVector& dir) const;
    const G4ThreeVector& RotateToSolid(G4ThreeVector& dir) const;
      // Rotate input vector between lattice and solid orientations
      // Returns new vector value for convenience

    const G4CrystalExtension* GetCrystal() const;

    const G4ThreeVector& GetBasis(G4int i) const;
      // Call through to get crystal basis vectors
    
    void SetVerbose(G4int aInt) { verboseLevel = aInt; }

    static G4bool IsLattice(G4LogicalVolume* aLV);

  private:

    G4RotationMatrix fOrient;           // Rotate geometry into lattice frame
    G4RotationMatrix fInverse;
    G4int hMiller = 1, kMiller = 1, lMiller = 0; // Save Miller indices for dump
    G4double fRot = 0.0;
    
    G4int verboseLevel = 0;

    static std::vector<G4LogicalVolume*> fLCVvec;
};

#endif