Gabriele Cosmo
77 lines
2.2 KiB
C++
77 lines
2.2 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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// UEnclosingCylinder
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//
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// Class description:
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//
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// Definition of a utility class for quickly deciding if a point
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// is clearly outside a polyhedra or polycone or deciding if
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// a trajectory is clearly going to miss those shapes.
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//
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// 19.10.12 Marek Gayer
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// Created from original implementation in Geant4
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// --------------------------------------------------------------------
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#ifndef UEnclosingCylinder_hh
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#define UEnclosingCylinder_hh
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#include "UTypes.hh"
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#include "UTubs.hh"
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class UReduciblePolygon;
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class UEnclosingCylinder
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{
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public: // with description
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UEnclosingCylinder(/*const UReduciblePolygon *rz*/ double r, double lo, double hi,
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bool phiIsOpen,
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double startPhi, double totalPhi);
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~UEnclosingCylinder();
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bool MustBeOutside(const UVector3& p) const;
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// Decide very rapidly if the point is outside the cylinder.
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// If one is not certain, return false.
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bool ShouldMiss(const UVector3& p, const UVector3& v) const;
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// Decide very rapidly if the trajectory is going to miss the cylinder.
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// If one is not sure, return false.
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double DistanceTo(const UVector3& p, const UVector3& v) const;
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double SafetyFromOutside(const UVector3& p) const;
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public: // without description
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void Extent(UVector3& aMin, UVector3& aMax) const;
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double radius; // radius of our cylinder
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protected:
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double zLo, zHi; // z extent
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bool phiIsOpen; // true if there is a phi segment
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double startPhi, // for isPhiOpen==true, starting of phi segment
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totalPhi; // for isPhiOpen==true, size of phi segment
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double rx1, ry1,
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dx1, dy1;
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double rx2, ry2,
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dx2, dy2;
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bool concave; // true, if x/y Cross section is concave
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UTubs* tube;
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};
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#endif
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