Gabriele Cosmo
245 lines
9.9 KiB
C++
245 lines
9.9 KiB
C++
//
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// ********************************************************************
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// * DISCLAIMER *
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// * *
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// * The following disclaimer summarizes all the specific disclaimers *
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// * of contributors to this software. The specific disclaimers,which *
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// * govern, are listed with their locations in: *
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// * http://cern.ch/geant4/license *
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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. *
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// * *
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// * This code implementation is the intellectual property of the *
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// * GEANT4 collaboration. *
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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 *
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// * statement, and all its terms. *
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// ********************************************************************
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//
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//
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// $Id: G4SphericalSurface.hh,v 1.9 2003/06/16 16:52:41 gunter Exp $
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// GEANT4 tag $Name: geant4-05-02-patch-01 $
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//
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// ----------------------------------------------------------------------
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// Class G4SphericalSurface
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//
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// Class description:
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//
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// Definition of a spherical surface.
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// The code for G4SphericalSurface has been derived from the original
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// implementation in the "Gismo" package.
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//
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// Authors: L.Lim, A.Breakstone.
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// Adaptation: J.Sulkimo, P.Urban.
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// Revisions by: L.Broglia, G.Cosmo.
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// ----------------------------------------------------------------------
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#ifndef __G4SpheShell_H
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#define __G4SpheShell_H
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#include "G4Surface.hh"
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#include "G4ThreeMat.hh"
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class G4SphericalSurface : public G4Surface
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{
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public: // with description
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G4SphericalSurface();
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// Default constructor.
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G4SphericalSurface( const G4Vector3D& o,
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const G4Vector3D& xhat, const G4Vector3D& zhat,
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G4double r,
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G4double ph1, G4double ph2,
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G4double th1, G4double th2 );
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// Normal constructor:
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// first argument is the origin of the G4SphericalSurface
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// second argument is the axis of the G4SphericalSurface
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// which defines azimuthal angle equals zero
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// third argument is the axis of the G4SphericalSurface
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// which defines polar angle equals zero
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// fourth argument is the radius of the G4SphericalSurface
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// fifth argument is the lower azimuthal angle limit of the surface
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// sixth argument is the upper azimuthal angle limit of the surface
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// seventh argument is the lower polar angle limit of the surface
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// eigth argument is the upper polar angle limit of the surface
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virtual ~G4SphericalSurface();
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// Destructor.
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inline G4int operator==( const G4SphericalSurface& s );
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// Equality operator.
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inline G4String GetEntityType() const;
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// Returns the type identifier.
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virtual const char* NameOf() const;
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// Returns the class name.
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virtual void PrintOn( std::ostream& os = G4cout ) const;
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// Printing function, streaming surface's attributes.
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G4int Intersect(const G4Ray&);
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// Returns the distance along a Ray (straight line with G4Vector3D) to
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// leave or enter a G4SphericalSurface.
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// If the G4Vector3D of the Ray is opposite to that of the Normal to
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// the G4SphericalSurface at the intersection point, it will not leave the
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// G4SphericalSurface.
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// Similarly, if the G4Vector3D of the Ray is along that of the Normal
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// to the G4SphericalSurface at the intersection point, it will not enter
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// the G4SphericalSurface.
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// This method is called by all finite shapes sub-classed to
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// G4SphericalSurface.
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// A negative result means no intersection.
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// If no valid intersection point is found, set the distance
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// and intersection point to large numbers.
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void CalcBBox();
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// Computes the bounding-box.
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inline void Comp(G4Vector3D& v, G4Point3D& min , G4Point3D& max);
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// Compares the x,y and z values of v and min
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// versus v and max. min/max-values are replaced if
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// greater/smaller than v-values.
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virtual G4double HowNear( const G4Vector3D& x ) const;
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// Returns the distance from a point to a G4SphericalSurface
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// The point x is the (input) argument.
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// The distance is positive if the point is Inside, negative if it
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// is outside
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virtual G4Vector3D SurfaceNormal( const G4Point3D& p ) const;
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// Returns the Normal unit vector to the G4SphericalSurface at a point p
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// on (or nearly on) the G4SphericalSurface.
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virtual G4int Inside( const G4Vector3D& x ) const;
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// Returns 1 if the point x is Inside the G4SphericalSurface, 0 otherwise.
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virtual G4int WithinBoundary( const G4Vector3D& x ) const;
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// Returns 1 if the point x is within the boundary, 0 otherwise.
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virtual G4double Scale() const;
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// Returns the radius, unless it is zero, in which case it
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// returns 1. Used for Scale-invariant tests of surface thickness.
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virtual G4double Area() const;
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// Calculates the area of a G4SphericalSurface.
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virtual void resize( G4double r, G4double ph1, G4double ph2,
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G4double th1, G4double th2);
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// Resizes the G4SphericalSurface to new radius and angle limits.
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// first argument is the radius of the G4SphericalSurface
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// second argument is the lower azimuthal angle limit of the surface
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// third argument is the upper azimuthal angle limit of the surface
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// fourth argument is the lower polar angle limit of the surface
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// fifth argument is the upper polar angle limit of the surface
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inline G4Vector3D GetXAxis() const;
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inline G4Vector3D GetZAxis() const;
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inline G4double GetRadius() const;
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inline G4double GetPhi1() const;
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inline G4double GetPhi2() const;
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inline G4double GetTheta1() const;
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inline G4double GetTheta2() const;
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// Accessors methodss to return the axes, radius, and angles
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// of the G4SphericalSurface.
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public: // without description
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virtual G4Vector3D Normal( const G4Vector3D& p ) const;
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// Returns the Normal unit vector as for SurfaceNormal().
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/*
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virtual G4double distanceAlongRay( G4int which_way, const G4Ray* ry,
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G4ThreeVec& p ) const;
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// Returns the distance along a Ray to enter or leave a G4SphericalSurface.
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// The first (input) argument is +1 to leave or -1 to enter
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// The second (input) argument is a pointer to the Ray
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// The third (output) argument returns the intersection point.
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virtual G4double distanceAlongHelix( G4int which_way, const Helix* hx,
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G4ThreeVec& p ) const;
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// Returns the distance along a Helix to enter or leave a G4SphericalSurface.
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// The first (input) argument is +1 to leave or -1 to enter
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// The second (input) argument is a pointer to the Helix
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// The third (output) argument returns the intersection point.
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virtual G4Vector3D Normal( const G4Point3D& p ) const;
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// Returns the Normal unit vector to a G4SphericalSurface at a point p
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// on (or nearly on) the G4SphericalSurface.
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virtual void rotate( G4double alpha, G4double beta,
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G4double gamma, G4ThreeMat& m, G4int inverse );
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// Rotates the G4SphericalSurface (angles are assumed to be given in
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// radians), arguments:
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// - first about global x_axis by angle alpha,
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// - second about global y-axis by angle beta,
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// - third about global z_axis by angle gamma,
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// - fourth (output) argument gives the calculated rotation matrix,
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// - fifth (input) argument is an integer flag which if
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// non-zero reverses the order of the rotations.
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virtual void rotate( G4double alpha, G4double beta,
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G4double gamma, G4int inverse );
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// Rotates the G4SphericalSurface (angles are assumed to be given in
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// radians), arguments:
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// - first about global x_axis by angle alpha,
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// - second about global y-axis by angle beta,
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// - third about global z_axis by angle gamma,
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// - fourth (input) argument is an integer flag which if
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// non-zero reverses the order of the rotations.
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*/
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protected: // with description
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G4Vector3D x_axis;
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// Direction (unit vector) of axis of G4SphericalSurface
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// which defines azimuthal angle of zero.
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G4Vector3D z_axis;
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// Direction (unit vector) of axis of G4SphericalSurface
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// which defines polar angle of zero.
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G4double radius;
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// Radius of G4SphericalSurface.
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G4double phi_1;
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// Lower azimuthal angle limit of G4SphericalSurface
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// (in radians). Allowed range: 0 <= phi_1 < 2*PI.
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G4double phi_2;
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// Upper azimuthal angle limit of G4SphericalSurface
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// (in radians). Allowed range: phi_1 < phi_2 <= phi_1 + 2*PI
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G4double theta_1;
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// Lower polar angle limit of G4SphericalSurface
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// (in radians). Allowed range: 0 <= theta_1 < PI.
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G4double theta_2;
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// Upper polar angle limit of G4SphericalSurface
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// (in radians). Allowed range: theta_1 < theta_2 <= theta_1 + PI.
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private:
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G4SphericalSurface(const G4SphericalSurface&);
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G4SphericalSurface& operator=(const G4SphericalSurface&);
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// Private copy constructor and assignment operator.
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// virtual G4double gropeAlongHelix( const Helix* hx ) const;
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// Private function to use a crude technique to find the intersection
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// of a Helix with a G4SphericalSurface. It returns the turning angle
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// along the Helix at which the intersection occurs or -1.0 if no
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// intersection point is found. The argument to the call is the pointer
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// to the Helix.
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};
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#include "G4SphericalSurface.icc"
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#endif
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