Gabriele Cosmo
189 lines
7.9 KiB
C++
189 lines
7.9 KiB
C++
//
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// ********************************************************************
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// * License and Disclaimer *
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// * *
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// * The Geant4 software is copyright of the Copyright Holders of *
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// * the Geant4 Collaboration. It is provided under the terms and *
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// * conditions of the Geant4 Software License, included in the file *
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// * LICENSE and available at http://cern.ch/geant4/license . These *
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// * include a list of copyright holders. *
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// * *
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// * Neither the authors of this software system, nor their employing *
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// * institutes,nor the agencies providing financial support for this *
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// * work make any representation or warranty, express or implied, *
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// * regarding this software system or assume any liability for its *
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// * use. Please see the license in the file LICENSE and URL above *
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// * for the full disclaimer and the limitation of liability. *
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// * *
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// * This code implementation is the result of the scientific and *
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// * technical work of the GEANT4 collaboration. *
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// * By using, copying, modifying or distributing the software (or *
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// * any work based on the software) you agree to acknowledge its *
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// * use in resulting scientific publications, and indicate your *
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// * acceptance of all terms of the Geant4 Software license. *
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// ********************************************************************
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//
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//
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// $Id:$
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// GEANT4 tag $Name:$
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//
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//
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// class G4USolid
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//
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// Class description:
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//
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// Bridge base class for solids defined in the Unified Solids Library.
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// --------------------------------------------------------------------
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#ifndef G4USolid_HH
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#define G4USolid_HH
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#include "G4VSolid.hh"
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#if ( defined(G4GEOM_USE_USOLIDS) || defined(G4GEOM_USE_PARTIAL_USOLIDS) )
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#include "VUSolid.hh"
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class G4VPVParameterisation;
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class G4USolid : public G4VSolid
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{
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public: // with description
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G4USolid(const G4String& pName, VUSolid* shape);
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// Creates a new shape, with the supplied name. No provision is made
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// for sharing a common name amongst multiple classes.
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virtual ~G4USolid();
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// Default destructor.
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G4bool operator==(const G4USolid& s) const;
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// Return true only if addresses are the same.
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virtual G4bool CalculateExtent(const EAxis pAxis,
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const G4VoxelLimits& pVoxelLimit,
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const G4AffineTransform& pTransform,
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G4double& pMin, G4double& pMax) const;
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// Calculate the minimum and maximum extent of the solid, when under the
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// specified transform, and within the specified limits. If the solid
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// is not intersected by the region, return false, else return true.
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virtual EInside Inside(const G4ThreeVector& p) const;
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// Returns kOutside if the point at offset p is outside the shapes
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// boundaries plus Tolerance/2, kSurface if the point is <= Tolerance/2
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// from a surface, otherwise kInside.
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virtual G4ThreeVector SurfaceNormal(const G4ThreeVector& p) const;
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// Returns the outwards pointing unit normal of the shape for the
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// surface closest to the point at offset p.
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virtual G4double DistanceToIn(const G4ThreeVector& p,
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const G4ThreeVector& v) const;
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// Return the distance along the normalised vector v to the shape,
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// from the point at offset p. If there is no intersection, return
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// kInfinity. The first intersection resulting from `leaving' a
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// surface/volume is discarded. Hence, it is tolerant of points on
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// the surface of the shape.
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virtual G4double DistanceToIn(const G4ThreeVector& p) const;
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// Calculate the distance to the nearest surface of a shape from an
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// outside point. The distance can be an underestimate.
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virtual G4double DistanceToOut(const G4ThreeVector& p,
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const G4ThreeVector& v,
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const G4bool calcNorm = false,
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G4bool* validNorm = 0,
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G4ThreeVector* n = 0) const;
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// Return the distance along the normalised vector v to the shape,
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// from a point at an offset p inside or on the surface of the shape.
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// Intersections with surfaces, when the point is < Tolerance/2 from a
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// surface must be ignored.
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// If calcNorm==true:
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// validNorm set true if the solid lies entirely behind or on the
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// exiting surface.
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// n set to exiting outwards normal vector (undefined Magnitude).
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// validNorm set to false if the solid does not lie entirely behind
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// or on the exiting surface
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// If calcNorm==false:
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// validNorm and n are unused.
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//
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// Must be called as solid.DistanceToOut(p,v) or by specifying all
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// the parameters.
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virtual G4double DistanceToOut(const G4ThreeVector& p) const;
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// Calculate the distance to the nearest surface of a shape from an
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// inside point. The distance can be an underestimate.
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virtual void ComputeDimensions(G4VPVParameterisation* p,
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const G4int n,
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const G4VPhysicalVolume* pRep);
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// Throw exception if ComputeDimensions called from an illegal
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// derived class.
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virtual G4double GetCubicVolume();
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// Returns an estimation of the solid volume in internal units.
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// This method may be overloaded by derived classes to compute the
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// exact geometrical quantity for solids where this is possible,
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// or anyway to cache the computed value.
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// Note: the computed value is NOT cached.
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virtual G4double GetSurfaceArea();
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// Return an estimation of the solid surface area in internal units.
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// This method may be overloaded by derived classes to compute the
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// exact geometrical quantity for solids where this is possible,
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// or anyway to cache the computed value.
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// Note: the computed value is NOT cached.
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virtual G4GeometryType GetEntityType() const;
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// Provide identification of the class of an object.
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// (required for persistency and STEP interface)
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virtual G4ThreeVector GetPointOnSurface() const;
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// Returns a random point located on the surface of the solid.
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virtual G4VSolid* Clone() const;
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// Returns a pointer of a dynamically allocated copy of the solid.
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// Returns NULL pointer with warning in case the concrete solid does not
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// implement this method. The caller has responsibility for ownership.
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virtual std::ostream& StreamInfo(std::ostream& os) const;
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// Dumps contents of the solid to a stream.
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virtual void DescribeYourselfTo(G4VGraphicsScene& scene) const;
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// A "double dispatch" function which identifies the solid
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// to the graphics scene for visualization.
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virtual G4VisExtent GetExtent() const;
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// Provide extent (bounding box) as possible hint to the graphics view.
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virtual G4Polyhedron* CreatePolyhedron() const;
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// Create Polyhedron used for Visualisation
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virtual G4Polyhedron* GetPolyhedron() const;
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// Smart access function - creates on request and stores for future
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// access. A null pointer means "not available".
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public: // without description
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G4USolid(__void__&);
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// Fake default constructor for usage restricted to direct object
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// persistency for clients requiring preallocation of memory for
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// persistifiable objects.
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G4USolid(const G4USolid& rhs);
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G4USolid& operator=(const G4USolid& rhs);
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// Copy constructor and assignment operator.
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VUSolid* GetSolid() const
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{
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return fShape;
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}
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protected: // data
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VUSolid* fShape;
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mutable G4bool fRebuildPolyhedron;
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mutable G4Polyhedron* fPolyhedron;
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};
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#endif // G4GEOM_USE_USOLIDS
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#endif
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