Gabriele Cosmo
82 lines
2.4 KiB
C++
82 lines
2.4 KiB
C++
// This code implementation is the intellectual property of
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// the GEANT4 collaboration.
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//
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// By copying, distributing or modifying the Program (or any work
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// based on the Program) you indicate your acceptance of this statement,
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// and all its terms.
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//
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// $Id: G4ClippablePolygon.hh,v 1.2 2000/04/18 19:06:38 davidw Exp $
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// GEANT4 tag $Name: geant4-02-00 $
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//
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//
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// --------------------------------------------------------------------
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// GEANT 4 class header file
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//
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// G4ClippablePolygon
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//
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// Class description:
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//
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// Declaration of a utility class of a polygon that can be
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// clipped by a voxel.
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// --------------------------------------------------------------------
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#ifndef G4ClippablePolygon_hh
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#define G4ClippablePolygon_hh
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#include "globals.hh"
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#include "geomdefs.hh"
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#include "G4ThreeVector.hh"
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class G4VoxelLimits;
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class G4AffineTransform;
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class G4AffineTransform;
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class G4VoxelLimits;
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#include "g4rw/tvordvec.h"
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typedef G4RWTValOrderedVector<G4ThreeVector> G4ThreeVectorList;
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class G4ClippablePolygon {
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public:
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G4ClippablePolygon() {;}
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virtual ~G4ClippablePolygon() {;}
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virtual void AddVertexInOrder( const G4ThreeVector vertex );
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virtual void ClearAllVertices();
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virtual void SetNormal( const G4ThreeVector &newNormal ) { normal = newNormal; }
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virtual const G4ThreeVector GetNormal() const { return normal; }
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virtual G4bool Clip( const G4VoxelLimits &voxelLimit );
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virtual G4bool PartialClip( const G4VoxelLimits &voxelLimit, const EAxis IgnoreMe );
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virtual void ClipAlongOneAxis( const G4VoxelLimits &voxelLimit, const EAxis axis );
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virtual G4bool GetExtent( const EAxis axis,
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G4double &min, G4double &max ) const;
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virtual const G4ThreeVector *GetMinPoint( const EAxis axis ) const;
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virtual const G4ThreeVector *GetMaxPoint( const EAxis axis ) const;
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virtual G4int GetNumVertices() const { return vertices.entries(); }
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virtual G4bool Empty() const { return vertices.entries()==0; }
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virtual G4bool InFrontOf( const G4ClippablePolygon &other, EAxis axis ) const;
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virtual G4bool BehindOf( const G4ClippablePolygon &other, EAxis axis ) const;
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virtual G4bool GetPlanerExtent( const G4ThreeVector &pointOnPlane,
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const G4ThreeVector &planeNormal,
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G4double &min, G4double &max ) const;
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protected:
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G4ThreeVectorList vertices;
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G4ThreeVector normal;
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void ClipToSimpleLimits( G4ThreeVectorList& pPolygon,
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G4ThreeVectorList& outputPolygon,
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const G4VoxelLimits& pVoxelLimit );
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};
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#endif
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