// @(#)root/csg:$Id$
// Author:  Timur Pocheptsov  01/04/2005

#ifndef ROOT_CsgOps
#define ROOT_CsgOps

#include "Rtypes.h"

class TBuffer3D;

namespace RootCsg {

// I need TBaseMesh to have an opaque pointer
// to hidden representation of resulting mesh.

class TBaseMesh {
public:
   TBaseMesh() = default;
   virtual ~TBaseMesh() = default;

   virtual UInt_t NumberOfPolys() const = 0;
   virtual UInt_t NumberOfVertices() const = 0;
   virtual UInt_t SizeOfPoly(UInt_t polyIndex) const = 0;
   virtual const Double_t *GetVertex(UInt_t vertNum) const = 0;
   virtual Int_t GetVertexIndex(UInt_t polyNum, UInt_t vertNum) const = 0;
};

TBaseMesh *ConvertToMesh(const TBuffer3D &buff);
TBaseMesh *BuildUnion(const TBaseMesh *leftOperand, const TBaseMesh *rightOperand);
TBaseMesh *BuildIntersection(const TBaseMesh *leftOperand, const TBaseMesh *rightOperand);
TBaseMesh *BuildDifference(const TBaseMesh *leftOperand, const TBaseMesh *rightOperand);

} // namespace RootCsg

#endif