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#ifndef VECGEOM_TUBESTRUCT_H_
#define VECGEOM_TUBESTRUCT_H_
#include "VecGeom/base/Global.h"
#include "VecGeom/volumes/Wedge_Evolution.h"
namespace vecgeom {
// VECGEOM_DEVICE_FORWARD_DECLARE( struct TubeStruct; )
// VECGEOM_DEVICE_DECLARE_BoxStruct )
inline namespace VECGEOM_IMPL_NAMESPACE {
// a plain and lightweight struct to encapsulate data members of a tube
template <typename T = double>
struct TubeStruct {
// tube defining parameters
T fRmin; //< inner radius
T fRmax; //< outer radius
T fZ; //< half-length in +z and -z direction
T fSphi; //< starting phi value (in radians)
T fDphi; //< delta phi value of tube segment (in radians)
// cached complex values (to avoid recomputation during usage)
T fRmin2;
T fRmax2;
T fAlongPhi1x;
T fAlongPhi1y;
T fAlongPhi2x;
T fAlongPhi2y;
T fTolIrmin2;
T fTolOrmin2;
T fTolIrmax2;
T fTolOrmax2;
T fTolIz;
T fTolOz;
T fTolIrmin;
T fTolOrmin;
T fTolIrmax;
T fTolOrmax;
T fMaxVal;
evolution::Wedge fPhiWedge;
VECCORE_ATT_HOST_DEVICE
void UpdatedZ()
{
fTolIz = fZ - kHalfTolerance;
fTolOz = fZ + kHalfTolerance;
fMaxVal = vecCore::math::Max(fRmax, fZ);
}
VECCORE_ATT_HOST_DEVICE
void UpdatedRMin()
{
fRmin2 = fRmin * fRmin;
fTolOrmin = (fRmin - kHalfTolerance);
fTolIrmin = (fRmin + kHalfTolerance);
fTolOrmin2 = fTolOrmin * fTolOrmin;
fTolIrmin2 = fTolIrmin * fTolIrmin;
}
VECCORE_ATT_HOST_DEVICE
void UpdatedRMax()
{
fRmax2 = fRmax * fRmax;
fTolOrmax = (fRmax + kHalfTolerance);
fTolIrmax = (fRmax - kHalfTolerance);
fTolOrmax2 = fTolOrmax * fTolOrmax;
fTolIrmax2 = fTolIrmax * fTolIrmax;
fMaxVal = vecCore::math::Max(fRmax, fZ);
}
public:
VECCORE_ATT_HOST_DEVICE
T rmin() const { return fRmin; }
VECCORE_ATT_HOST_DEVICE
T z() const { return fZ; }
private:
// can go into source
VECCORE_ATT_HOST_DEVICE
static void GetAlongVectorToPhiSector(Precision phi, Precision &x, Precision &y)
{
x = std::cos(phi);
y = std::sin(phi);
}
public:
VECCORE_ATT_HOST_DEVICE
void SetRMin(Precision const &_rmin)
{
fRmin = _rmin;
// Update cached values;
UpdatedRMin();
}
VECCORE_ATT_HOST_DEVICE
void SetRMax(Precision const &_rmax)
{
fRmax = _rmax;
// Update cached values;
UpdatedRMax();
}
VECCORE_ATT_HOST_DEVICE
void SetDz(Precision const &_z)
{
fZ = _z;
// Update cached values;
UpdatedZ();
}
// can go into source
VECCORE_ATT_HOST_DEVICE
void SetAndCheckSPhiAngle(T sPhi)
{
// Ensure fSphi in 0-2PI or -2PI-0 range if shape crosses 0
if (sPhi < 0) {
fSphi = kTwoPi - std::fmod(std::fabs(sPhi), kTwoPi);
} else {
fSphi = std::fmod(sPhi, kTwoPi);
}
if (fSphi + fDphi > kTwoPi) {
fSphi -= kTwoPi;
}
// Update cached values.
GetAlongVectorToPhiSector(fSphi, fAlongPhi1x, fAlongPhi1y);
GetAlongVectorToPhiSector(fSphi + fDphi, fAlongPhi2x, fAlongPhi2y);
}
// can go into source
VECCORE_ATT_HOST_DEVICE
void SetAndCheckDPhiAngle(T dPhi)
{
if (dPhi >= kTwoPi - 0.5 * kAngTolerance) {
fDphi = kTwoPi;
fSphi = 0;
} else {
if (dPhi > 0) {
fDphi = dPhi;
} else {
// std::ostringstream message;
// message << "Invalid dphi.\n"
// << "Negative or zero delta-Phi (" << dPhi << ")\n";
// std::cout<<"UnplacedTube::CheckDPhiAngle(): Fatal error: "<< message.str().c_str() <<"\n";
}
}
// Update cached values.
GetAlongVectorToPhiSector(fSphi + fDphi, fAlongPhi2x, fAlongPhi2y);
}
// can go into source
VECCORE_ATT_HOST_DEVICE
void CalculateCached()
{
UpdatedZ();
UpdatedRMin();
UpdatedRMax();
GetAlongVectorToPhiSector(fSphi, fAlongPhi1x, fAlongPhi1y);
GetAlongVectorToPhiSector(fSphi + fDphi, fAlongPhi2x, fAlongPhi2y);
fMaxVal = vecCore::math::Max(fRmax, fZ);
}
public:
// constructors
VECCORE_ATT_HOST_DEVICE
TubeStruct(T const &_rmin, T const &_rmax, T const &_z, T const &_sphi, T const &_dphi)
: fRmin(_rmin < 0.0 ? 0.0 : _rmin), fRmax(_rmax), fZ(_z), fSphi(_sphi), fDphi(_dphi), fRmin2(0), fRmax2(0),
fAlongPhi1x(0), fAlongPhi1y(0), fAlongPhi2x(0), fAlongPhi2y(0), fTolIrmin2(0), fTolOrmin2(0), fTolIrmax2(0),
fTolOrmax2(0), fTolIz(0), fTolOz(0), fPhiWedge(_dphi, _sphi)
{
CalculateCached();
// DetectConvexity();
}
};
} // namespace VECGEOM_IMPL_NAMESPACE
} // namespace vecgeom
#endif
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