Gabriele Cosmo
92 lines
2.3 KiB
C++
92 lines
2.3 KiB
C++
//
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// ********************************************************************
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// * This Software is part of the AIDA Unified Solids Library package *
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// * See: https://aidasoft.web.cern.ch/USolids *
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// ********************************************************************
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//
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// $Id:$
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//
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// --------------------------------------------------------------------
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//
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// UIntersectingCone
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//
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// Class description:
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//
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// Utility class which calculates the intersection
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// of an arbitrary line with a fixed cone
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//
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// 19.02.13 Marek Gayer
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// Created from original implementation in Geant4
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// --------------------------------------------------------------------
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#ifndef UIntersectingCone_hh
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#define UIntersectingCone_hh
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#include "UTypes.hh"
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class UIntersectingCone
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{
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public:
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UIntersectingCone(const double r[2], const double z[2]);
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virtual ~UIntersectingCone();
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int LineHitsCone(const UVector3& p, const UVector3& v, double& s1, double& s2);
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bool HitOn(const double r, const double z);
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inline double RLo() const
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{
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return rLo;
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}
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inline double RHi() const
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{
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return rHi;
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}
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inline double ZLo() const
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{
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return zLo;
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}
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inline double ZHi() const
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{
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return zHi;
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}
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public: // without description
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/*
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UIntersectingCone(__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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*/
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protected:
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double zLo, zHi, // Z bounds of side
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rLo, rHi; // R bounds of side
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bool type1; // True if cone is type 1
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// (std::fabs(z1-z2)>std::fabs(r1-r2))
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double A, B; // Cone radius parameter:
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// type 1: r = A + B*z
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// type 2: z = A + B*r
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// int Solution (const UVector3 &p, const UVector3 &v, double a, double b, double c, double &s1, double &s2);
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int LineHitsCone1(const UVector3& p, const UVector3& v,
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double& s1, double& s2);
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int LineHitsCone1Optimized(const UVector3& p, const UVector3& v,
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double& s1, double& s2);
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int LineHitsCone2(const UVector3& p, const UVector3& v,
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double& s1, double& s2);
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// const double kInfinity;
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const static double EpsilonQuad;
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};
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#endif
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