BfldHandler.h

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// $Id: BfldHandler.h,v 1.7 2005/02/03 22:35:49 rhatcher Exp $
// 
// BfldHandler
// 
// BfldHandler searches BfldMesh structures (geometry) and interpolates
// the values found in BfldMap structures (field values).
//
// Author:  R. Hatcher 2000.06.20
//

#ifndef BFLDHANDLER_H
#define BFLDHANDLER_H

#include "BField/BfldInterpMethod.h"

#include "TVector3.h"

class BfldCache;
class BfldMap;
class BfldMesh;

class BfldHandler : public TObject {

 public:
   BfldHandler();
   virtual ~BfldHandler();

   // this the usual method a user calls
   // it should NOT be overloaded/specialized
   TVector3 GetBField(const TVector3& position, Bool_t isUVZ);

   // all handlers must implement this method
   // this is where the actual interpolation occurs
   virtual TVector3 GetBFieldMeshCoord(const TVector3& position) = 0;

   BfldMap*         GetMap() const { return fMap; }

   void             SetCache(BfldCache* cache) { fCache = cache; }
   void             SetLastPolygAsSeed() { fUseLastAsSeed = kTRUE; }

   // each specialized class will have a different handling of kDefault
   // and disallow values that don't make sense
   virtual void SetInterpMethod(const BfldInterpMethod::InterpMethod_t method);

   // these must be virtual since Voronoi version does something special
   virtual void SetMap(BfldMap* map);
   virtual void SetMesh(BfldMesh* mesh);

 protected:

   BfldInterpMethod::InterpMethod_t  fInterpMethod;
   Bool_t                            fUseLastAsSeed;

   BfldCache    *fCache;
   BfldMap      *fMap;
   BfldMesh     *fMesh;
   
 private:

   ClassDef(BfldHandler,1)
};

#endif // BFLDHANDLER_H

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