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// This file is part of VecGeom and is distributed under the
// conditions in the file LICENSE.txt in the top directory.
// For the full list of authors see CONTRIBUTORS.txt and `git log`.
/// \brief This file implements the algorithms for Orb
/// \file volumes/kernel/orbImplementation.h
/// \author Raman Sehgal
/// History notes:
/// 2014 - 2015: original development (abstracted kernels); Raman Sehgal
/// July 2016: revision + moving to new backend structure (Raman Sehgal)
#ifndef VECGEOM_VOLUMES_KERNEL_ORBIMPLEMENTATION_H_
#define VECGEOM_VOLUMES_KERNEL_ORBIMPLEMENTATION_H_
#include "VecGeom/base/Vector3D.h"
#include "VecGeom/volumes/OrbStruct.h"
#include "VecGeom/volumes/kernel/GenericKernels.h"
#include <VecCore/VecCore>
#include <cstdio>
namespace vecgeom {
VECGEOM_DEVICE_FORWARD_DECLARE(struct OrbImplementation;);
VECGEOM_DEVICE_DECLARE_CONV(struct, OrbImplementation);
inline namespace VECGEOM_IMPL_NAMESPACE {
class PlacedOrb;
template <typename T>
struct OrbStruct;
class UnplacedOrb;
struct OrbImplementation {
using PlacedShape_t = PlacedOrb;
using UnplacedStruct_t = OrbStruct<Precision>;
using UnplacedVolume_t = UnplacedOrb;
VECCORE_ATT_HOST_DEVICE
static void PrintType()
{
// printf("SpecializedOrb<%i, %i>", transCodeT, rotCodeT);
}
template <typename Stream>
static void PrintType(Stream &st, int transCodeT = translation::kGeneric, int rotCodeT = rotation::kGeneric)
{
st << "SpecializedOrb<" << transCodeT << "," << rotCodeT << ">";
}
template <typename Stream>
static void PrintImplementationType(Stream &st)
{
(void)st;
// st << "OrbImplementation<" << transCodeT << "," << rotCodeT << ">";
}
template <typename Stream>
static void PrintUnplacedType(Stream &st)
{
(void)st;
// TODO: this is wrong
// st << "UnplacedOrb";
}
template <typename Real_v, typename Bool_v>
VECGEOM_FORCE_INLINE
VECCORE_ATT_HOST_DEVICE
static void Contains(UnplacedStruct_t const &orb, Vector3D<Real_v> const &point, Bool_v &inside)
{
Bool_v unused, outside;
GenericKernelForContainsAndInside<Real_v, Bool_v, false>(orb, point, unused, outside);
inside = !outside;
}
// BIG QUESTION: DO WE WANT TO GIVE ALL 3 TEMPLATE PARAMETERS
// -- OR -- DO WE WANT TO DEDUCE Bool_v, Index_t from Real_v???
template <typename Real_v, typename Inside_t>
VECGEOM_FORCE_INLINE
VECCORE_ATT_HOST_DEVICE
static void Inside(UnplacedStruct_t const &orb, Vector3D<Real_v> const &point, Inside_t &inside)
{
using Bool_v = vecCore::Mask_v<Real_v>;
using InsideBool_v = vecCore::Mask_v<Inside_t>;
Bool_v completelyinside, completelyoutside;
GenericKernelForContainsAndInside<Real_v, Bool_v, true>(orb, point, completelyinside, completelyoutside);
inside = EInside::kSurface;
vecCore::MaskedAssign(inside, (InsideBool_v)completelyoutside, Inside_t(EInside::kOutside));
vecCore::MaskedAssign(inside, (InsideBool_v)completelyinside, Inside_t(EInside::kInside));
}
template <typename Real_v, typename Bool_v, bool ForInside>
VECGEOM_FORCE_INLINE
VECCORE_ATT_HOST_DEVICE
static void GenericKernelForContainsAndInside(UnplacedStruct_t const &orb, Vector3D<Real_v> const &localPoint,
Bool_v &completelyinside, Bool_v &completelyoutside)
{
Precision fR = orb.fR;
Real_v rad2 = localPoint.Mag2();
Real_v tolR = fR - Real_v(kTolerance);
if (ForInside) completelyinside = (rad2 <= tolR * tolR);
tolR = fR + Real_v(kTolerance);
completelyoutside = (rad2 >= tolR * tolR);
return;
}
template <typename Real_v>
VECGEOM_FORCE_INLINE
VECCORE_ATT_HOST_DEVICE
static void DistanceToIn(UnplacedStruct_t const &orb, Vector3D<Real_v> const &point,
Vector3D<Real_v> const &direction, Real_v const & /*stepMax*/, Real_v &distance)
{
using Bool_v = vecCore::Mask_v<Real_v>;
distance = kInfLength;
Real_v rad = point.Mag();
Bool_v isPointInside = (rad < Real_v(orb.fR - kTolerance));
vecCore__MaskedAssignFunc(distance, isPointInside, Real_v(-1.));
Bool_v done = isPointInside;
if (vecCore::MaskFull(done)) return;
Real_v pDotV3D = point.Dot(direction);
Bool_v isPointOnSurface = (rad >= Real_v(orb.fR - kTolerance)) && (rad <= Real_v(orb.fR + kTolerance));
Bool_v cond = (isPointOnSurface && (pDotV3D < Real_v(0.)));
vecCore__MaskedAssignFunc(distance, !done && cond, Real_v(0.));
done |= cond;
if (vecCore::MaskFull(done)) return;
Real_v dist(kInfLength);
vecCore::MaskedAssign(
distance, !done && DetectIntersectionAndCalculateDistance<Real_v, true>(orb, point, direction, dist), dist);
}
template <typename Real_v>
VECGEOM_FORCE_INLINE
VECCORE_ATT_HOST_DEVICE
static void DistanceToOut(UnplacedStruct_t const &orb, Vector3D<Real_v> const &point,
Vector3D<Real_v> const &direction, Real_v const & /* stepMax */, Real_v &distance)
{
using Bool_v = vecCore::Mask_v<Real_v>;
distance = kInfLength;
Real_v rad = point.Mag();
Bool_v isPointOutside = (rad > Real_v(orb.fR + kTolerance));
vecCore__MaskedAssignFunc(distance, isPointOutside, Real_v(-1.));
Bool_v done = isPointOutside;
if (vecCore::MaskFull(done)) return;
Real_v pDotV3D = point.Dot(direction);
Bool_v isPointOnSurface = (rad >= Real_v(orb.fR - kTolerance)) && (rad <= Real_v(orb.fR + kTolerance));
Bool_v cond = (isPointOnSurface && (pDotV3D > Real_v(0.)));
vecCore__MaskedAssignFunc(distance, !done && cond, Real_v(0.));
done |= cond;
if (vecCore::MaskFull(done)) return;
Real_v dist(kInfLength);
vecCore::MaskedAssign(
distance, !done && DetectIntersectionAndCalculateDistance<Real_v, false>(orb, point, direction, dist), dist);
return;
}
template <typename Real_v>
VECGEOM_FORCE_INLINE
VECCORE_ATT_HOST_DEVICE
static void SafetyToIn(UnplacedStruct_t const &orb, Vector3D<Real_v> const &point, Real_v &safety)
{
using Bool_v = vecCore::Mask_v<Real_v>;
Real_v rad = point.Mag();
safety = rad - Real_v(orb.fR);
Bool_v isPointInside = (rad < Real_v(orb.fR - kTolerance));
vecCore__MaskedAssignFunc(safety, isPointInside, Real_v(-1.));
if (vecCore::MaskFull(isPointInside)) return;
Bool_v isPointOnSurface = (rad > Real_v(orb.fR - kTolerance)) && (rad < Real_v(orb.fR + kTolerance));
vecCore__MaskedAssignFunc(safety, isPointOnSurface, Real_v(0.));
}
template <typename Real_v>
VECGEOM_FORCE_INLINE
VECCORE_ATT_HOST_DEVICE
static void SafetyToOut(UnplacedStruct_t const &orb, Vector3D<Real_v> const &point, Real_v &safety)
{
using Bool_v = vecCore::Mask_v<Real_v>;
Real_v rad = point.Mag();
safety = Real_v(orb.fR) - rad;
Bool_v isPointOutside = (rad > Real_v(orb.fR + kTolerance));
vecCore__MaskedAssignFunc(safety, isPointOutside, Real_v(-1.));
if (vecCore::MaskFull(isPointOutside)) return;
Bool_v isPointOnSurface = (rad > Real_v(orb.fR - kTolerance)) && (rad < Real_v(orb.fR + kTolerance));
vecCore__MaskedAssignFunc(safety, isPointOnSurface, Real_v(0.));
}
template <typename Real_v, bool ForDistanceToIn>
VECGEOM_FORCE_INLINE
VECCORE_ATT_HOST_DEVICE
static typename vecCore::Mask_v<Real_v> DetectIntersectionAndCalculateDistance(UnplacedStruct_t const &orb,
Vector3D<Real_v> const &point,
Vector3D<Real_v> const &direction,
Real_v &distance)
{
using Bool_v = vecCore::Mask_v<Real_v>;
Real_v rad2 = point.Mag2();
Real_v pDotV3D = point.Dot(direction);
Precision fR = orb.fR;
Real_v c = rad2 - fR * fR;
Real_v d2 = (pDotV3D * pDotV3D - c);
if (ForDistanceToIn) {
Bool_v cond = ((d2 >= Real_v(0.)) && (pDotV3D <= Real_v(0.)));
vecCore__MaskedAssignFunc(distance, cond, (-pDotV3D - Sqrt(vecCore::math::Abs(d2))));
return cond;
} else {
vecCore__MaskedAssignFunc(distance, (d2 >= Real_v(0.)), (-pDotV3D + Sqrt(vecCore::math::Abs(d2))));
return (d2 >= Real_v(0.));
}
}
template <typename Real_v>
VECGEOM_FORCE_INLINE
VECCORE_ATT_HOST_DEVICE
static Vector3D<Real_v> NormalKernel(UnplacedStruct_t const &orb, Vector3D<Real_v> const &point,
typename vecCore::Mask_v<Real_v> &valid)
{
Real_v rad2 = point.Mag2();
Real_v invRadius = Real_v(1.) / Sqrt(rad2);
Vector3D<Real_v> normal = point * invRadius;
Real_v tolRMaxO = orb.fR + kTolerance;
Real_v tolRMaxI = orb.fR - kTolerance;
// Check radial surface
valid = ((rad2 <= tolRMaxO * tolRMaxO) && (rad2 >= tolRMaxI * tolRMaxI)); // means we are on surface
return normal;
}
};
} // namespace VECGEOM_IMPL_NAMESPACE
} // namespace vecgeom
#endif // VECGEOM_VOLUMES_KERNEL_orbIMPLEMENTATION_H_
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