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//===-- kernel/ExtrudedImplementation.h ----------------------------------*- C++ -*-===//
//===--------------------------------------------------------------------------===//
/// @file ExtrudedImplementation.h
/// @author mihaela.gheata@cern.ch
#ifndef VECGEOM_VOLUMES_KERNEL_EXTRUDEDIMPLEMENTATION_H_
#define VECGEOM_VOLUMES_KERNEL_EXTRUDEDIMPLEMENTATION_H_
#include <cstdio>
#include <VecCore/VecCore>
#include "VecGeom/base/Config.h"
#include "VecGeom/volumes/kernel/GenericKernels.h"
#include "VecGeom/base/Vector3D.h"
#include "TessellatedImplementation.h"
#include "SExtruImplementation.h"
namespace vecgeom {
VECGEOM_DEVICE_FORWARD_DECLARE(struct ExtrudedImplementation;);
VECGEOM_DEVICE_DECLARE_CONV(struct, ExtrudedImplementation);
inline namespace VECGEOM_IMPL_NAMESPACE {
class PlacedExtruded;
class ExtrudedStruct;
class UnplacedExtruded;
struct ExtrudedImplementation {
using PlacedShape_t = PlacedExtruded;
using UnplacedStruct_t = ExtrudedStruct;
using UnplacedVolume_t = UnplacedExtruded;
VECCORE_ATT_HOST_DEVICE
static void PrintType()
{
// printf("SpecializedBox<%i, %i>", transCodeT, rotCodeT);
}
template <typename Stream>
static void PrintType(Stream &st, int transCodeT = translation::kGeneric, int rotCodeT = rotation::kGeneric)
{
st << "SpecializedExtruded<" << transCodeT << "," << rotCodeT << ">";
}
template <typename Stream>
static void PrintImplementationType(Stream &st)
{
(void)st;
}
template <typename Stream>
static void PrintUnplacedType(Stream &st)
{
(void)st;
}
template <typename Real_v, typename Bool_v>
VECGEOM_FORCE_INLINE
VECCORE_ATT_HOST_DEVICE
static void Contains(UnplacedStruct_t const &extruded, Vector3D<Real_v> const &point, Bool_v &inside)
{
inside = false;
if (extruded.fIsSxtru) {
SExtruImplementation::Contains<Real_v, Bool_v>(extruded.fSxtruHelper, point, inside);
return;
}
#ifndef VECGEOM_ENABLE_CUDA
if (extruded.fUseTslSections) {
// Find the Z section
int zIndex = extruded.FindZSegment(point[2]);
if ((zIndex < 0) || (zIndex >= (int)extruded.GetNSegments())) return;
inside = extruded.fTslSections[zIndex]->Contains(point);
return;
}
#endif
TessellatedImplementation::Contains<Real_v, Bool_v>(extruded.fTslHelper, point, inside);
}
template <typename Real_v, typename Inside_v>
VECGEOM_FORCE_INLINE
VECCORE_ATT_HOST_DEVICE
static void Inside(UnplacedStruct_t const &extruded, Vector3D<Real_v> const &point, Inside_v &inside)
{
inside = EInside::kOutside;
if (extruded.fIsSxtru) {
SExtruImplementation::Inside<Real_v, Inside_v>(extruded.fSxtruHelper, point, inside);
return;
}
#ifndef VECGEOM_ENABLE_CUDA
if (extruded.fUseTslSections) {
const int nseg = (int)extruded.GetNSegments();
int zIndex = extruded.FindZSegment(point[2]);
if ((zIndex < 0) || (zIndex > nseg)) return;
inside = extruded.fTslSections[Min(zIndex, nseg - 1)]->Inside(point);
if (inside == EInside::kOutside) return;
if (inside == EInside::kInside) {
// Need to check if point on Z section
if (((zIndex == 0) || (zIndex == nseg)) &&
vecCore::math::Abs(point[2] - extruded.fZPlanes[zIndex]) < kTolerance) {
inside = EInside::kSurface;
}
} else {
inside = EInside::kSurface;
}
return;
}
#endif
TessellatedImplementation::Inside<Real_v, Inside_v>(extruded.fTslHelper, point, inside);
}
template <typename Real_v>
VECGEOM_FORCE_INLINE
VECCORE_ATT_HOST_DEVICE
static void DistanceToIn(UnplacedStruct_t const &extruded, Vector3D<Real_v> const &point,
Vector3D<Real_v> const &direction, Real_v const &stepMax, Real_v &distance)
{
// Note that Real_v is always double here
#ifdef EFFICIENT_TSL_DISTANCETOIN
if (extruded.fUseTslSections) {
// Check if the bounding box is hit
const Vector3D<Real_v> invdir(Real_v(1.0) / NonZero(direction.x()), Real_v(1.0) / NonZero(direction.y()),
Real_v(1.0) / NonZero(direction.z()));
Vector3D<int> sign;
sign[0] = invdir.x() < 0;
sign[1] = invdir.y() < 0;
sign[2] = invdir.z() < 0;
distance = BoxImplementation::IntersectCachedKernel2<Real_v, Real_v>(&extruded.fTslHelper.fMinExtent, point,
invdir, sign.x(), sign.y(), sign.z(),
-kTolerance, InfinityLength<Real_v>());
if (distance >= stepMax) return;
// Perform explicit Inside check to detect wrong side points. This impacts
// DistanceToIn performance by about 5% for all topologies
// auto inside = ScalarInsideKernel(unplaced, point);
// if (inside == kInside) return -1.;
int zIndex = extruded.FindZSegment(point[2]);
const int zMax = extruded.GetNSegments();
// Don't go out of bounds here, as the first/last segment should be checked
// even if the point is outside of Z-bounds
bool fromOutZ =
(point[2] < extruded.fZPlanes[0] + kTolerance) || (point[2] > extruded.fZPlanes[zMax] - kTolerance);
zIndex = zIndex < 0 ? 0 : (zIndex >= zMax ? zMax - 1 : zIndex);
// Traverse Z-segments left or right depending on sign of direction
bool goingRight = direction[2] >= 0;
distance = InfinityLength<Real_v>();
if (goingRight) {
for (int zSegCount = zMax; zIndex < zSegCount; ++zIndex) {
bool skipZ = fromOutZ && (zSegCount == 0);
if (skipZ)
distance = extruded.fTslSections[zIndex]->DistanceToIn<true>(point, direction, invdir.z(), stepMax);
else
distance = extruded.fTslSections[zIndex]->DistanceToIn<false>(point, direction, invdir.z(), stepMax);
// No segment further away can be at a shorter distance to the point, so
// if a valid distance is found, only endcaps remain to be investigated
if (distance >= -kTolerance && distance < InfinityLength<Precision>()) break;
}
} else {
// Going left
for (; zIndex >= 0; --zIndex) {
bool skipZ = fromOutZ && (zIndex == zMax);
if (skipZ)
distance = extruded.fTslSections[zIndex]->DistanceToIn<true>(point, direction, invdir.z(), stepMax);
else
distance = extruded.fTslSections[zIndex]->DistanceToIn<false>(point, direction, invdir.z(), stepMax);
// No segment further away can be at a shorter distance to the point, so
// if a valid distance is found, only endcaps remain to be investigated
if (distance >= -kTolerance && distance < InfinityLength<Precision>()) break;
}
}
}
#endif
if (extruded.fIsSxtru)
SExtruImplementation::DistanceToIn<Real_v>(extruded.fSxtruHelper, point, direction, stepMax, distance);
else
TessellatedImplementation::DistanceToIn<Real_v>(extruded.fTslHelper, point, direction, stepMax, distance);
}
template <typename Real_v>
VECGEOM_FORCE_INLINE
VECCORE_ATT_HOST_DEVICE
static void DistanceToOut(UnplacedStruct_t const &extruded, Vector3D<Real_v> const &point,
Vector3D<Real_v> const &direction, Real_v const &stepMax, Real_v &distance)
{
if (extruded.fIsSxtru)
SExtruImplementation::DistanceToOut<Real_v>(extruded.fSxtruHelper, point, direction, stepMax, distance);
else
TessellatedImplementation::DistanceToOut<Real_v>(extruded.fTslHelper, point, direction, stepMax, distance);
}
template <typename Real_v>
VECGEOM_FORCE_INLINE
VECCORE_ATT_HOST_DEVICE
static void SafetyToIn(UnplacedStruct_t const &extruded, Vector3D<Real_v> const &point, Real_v &safety)
{
if (extruded.fIsSxtru)
SExtruImplementation::SafetyToIn<Real_v>(extruded.fSxtruHelper, point, safety);
else
TessellatedImplementation::SafetyToIn<Real_v>(extruded.fTslHelper, point, safety);
}
template <typename Real_v>
VECGEOM_FORCE_INLINE
VECCORE_ATT_HOST_DEVICE
static void SafetyToOut(UnplacedStruct_t const &extruded, Vector3D<Real_v> const &point, Real_v &safety)
{
if (extruded.fIsSxtru)
SExtruImplementation::SafetyToOut<Real_v>(extruded.fSxtruHelper, point, safety);
else
TessellatedImplementation::SafetyToOut<Real_v>(extruded.fTslHelper, point, safety);
}
template <typename Real_v>
VECGEOM_FORCE_INLINE
VECCORE_ATT_HOST_DEVICE
static Vector3D<Real_v> NormalKernel(UnplacedStruct_t const &extruded, Vector3D<Real_v> const &point,
typename vecCore::Mask_v<Real_v> &valid)
{
// Computes the normal on a surface and returns it as a unit vector
if (extruded.fIsSxtru) return SExtruImplementation::NormalKernel<Real_v>(extruded.fSxtruHelper, point, valid);
return TessellatedImplementation::NormalKernel<Real_v>(extruded.fTslHelper, point, valid);
}
}; // end ExtrudedImplementation
} // namespace VECGEOM_IMPL_NAMESPACE
} // namespace vecgeom
#endif // VECGEOM_VOLUMES_KERNEL_EXTRUDEDIMPLEMENTATION_H_
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