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/// @file UnplacedTessellated.cpp
/// @author Mihaela Gheata (mihaela.gheata@cern.ch)
#include "VecGeom/volumes/UnplacedTessellated.h"
#include "VecGeom/volumes/SpecializedTessellated.h"
#include "VecGeom/volumes/utilities/GenerationUtilities.h"
#include "VecGeom/base/RNG.h"
#include "VecGeom/management/VolumeFactory.h"
namespace vecgeom {
inline namespace VECGEOM_IMPL_NAMESPACE {
void UnplacedTessellated::Print() const
{
printf("UnplacedTessellated {%zu facets}", fTessellated.fFacets.size());
}
void UnplacedTessellated::Print(std::ostream &os) const
{
os << "UnplacedTessellated {" << fTessellated.fFacets.size() << " facets " << std::endl;
}
Precision UnplacedTessellated::Capacity() const
{
if (fTessellated.fCubicVolume != 0.) return fTessellated.fCubicVolume;
// For explanation of the following algorithm see:
// https://en.wikipedia.org/wiki/Polyhedron#Volume
// http://wwwf.imperial.ac.uk/~rn/centroid.pdf
int size = fTessellated.fFacets.size();
for (int i = 0; i < size; ++i) {
TriangleFacet<Precision> &facet = *fTessellated.fFacets[i];
Precision area = facet.fSurfaceArea;
fTessellated.fCubicVolume += area * (facet.fVertices[0].Dot(facet.fNormal));
}
fTessellated.fCubicVolume /= 3.;
return fTessellated.fCubicVolume;
}
Precision UnplacedTessellated::SurfaceArea() const
{
if (fTessellated.fSurfaceArea != 0.) return fTessellated.fSurfaceArea;
int size = fTessellated.fFacets.size();
for (int i = 0; i < size; ++i) {
TriangleFacet<Precision> *facet = fTessellated.fFacets[i];
fTessellated.fSurfaceArea += facet->fSurfaceArea;
}
return fTessellated.fSurfaceArea;
}
int UnplacedTessellated::ChooseSurface() const
{
int choice = 0; // 0 = zm, 1 = zp, 2 = ym, 3 = yp, 4 = xm, 5 = xp
Precision Stotal = SurfaceArea();
// random value to choose surface to place the point
Precision rand = RNG::Instance().uniform() * Stotal;
while (rand > fTessellated.fFacets[choice]->fSurfaceArea)
rand -= fTessellated.fFacets[choice]->fSurfaceArea, choice++;
return choice;
}
Vector3D<Precision> UnplacedTessellated::SamplePointOnSurface() const
{
int surface = ChooseSurface();
Precision r1 = RNG::Instance().uniform(0.0, 1.0);
Precision r2 = RNG::Instance().uniform(0.0, 1.0);
if (r1 + r2 > 1.) {
r1 = 1. - r1;
r2 = 1. - r2;
}
auto facet = fTessellated.fFacets[surface];
return (facet->fVertices[0] + r1 * (facet->fVertices[1] - facet->fVertices[0]) +
r2 * (facet->fVertices[2] - facet->fVertices[0]));
}
bool UnplacedTessellated::Normal(Vector3D<Precision> const &point, Vector3D<Precision> &norm) const
{
// Redirect to normal implementation
bool valid = false;
norm = TessellatedImplementation::NormalKernel<Precision>(fTessellated, point, valid);
return valid;
}
#ifdef VECCORE_CUDA
template <TranslationCode transCodeT, RotationCode rotCodeT>
VECCORE_ATT_DEVICE
VPlacedVolume *UnplacedTessellated::Create(LogicalVolume const *const logical_volume,
Transformation3D const *const transformation, const int id,
VPlacedVolume *const placement)
{
if (placement) {
new (placement) SpecializedTessellated<transCodeT, rotCodeT>(logical_volume, transformation, id);
return placement;
}
return new SpecializedTessellated<transCodeT, rotCodeT>(logical_volume, transformation, id);
}
#else
template <TranslationCode transCodeT, RotationCode rotCodeT>
VPlacedVolume *UnplacedTessellated::Create(LogicalVolume const *const logical_volume,
Transformation3D const *const transformation, VPlacedVolume *const placement)
{
if (placement) {
new (placement) SpecializedTessellated<transCodeT, rotCodeT>(logical_volume, transformation);
return placement;
}
return new SpecializedTessellated<transCodeT, rotCodeT>(logical_volume, transformation);
}
#endif
VECCORE_ATT_DEVICE
VPlacedVolume *UnplacedTessellated::SpecializedVolume(LogicalVolume const *const volume,
Transformation3D const *const transformation,
const TranslationCode trans_code, const RotationCode rot_code,
#ifdef VECCORE_CUDA
const int id,
#endif
VPlacedVolume *const placement) const
{
return VolumeFactory::CreateByTransformation<UnplacedTessellated>(volume, transformation, trans_code, rot_code,
#ifdef VECCORE_CUDA
id,
#endif
placement);
}
std::ostream &UnplacedTessellated::StreamInfo(std::ostream &os) const
{
int oldprc = os.precision(16);
os << "-----------------------------------------------------------\n"
<< " *** Dump for solid - " << GetEntityType() << " ***\n"
<< " ===================================================\n"
<< " Solid type: Trd\n"
<< " Parameters: \n"
<< "-----------------------------------------------------------\n";
os.precision(oldprc);
return os;
}
#ifdef VECGEOM_CUDA_INTERFACE
DevicePtr<cuda::VUnplacedVolume> UnplacedTessellated::CopyToGpu(DevicePtr<cuda::VUnplacedVolume> const in_gpu_ptr) const
{
#ifdef HYBRID_NAVIGATOR_PORTED_TO_CUDA
return CopyToGpuImpl<UnplacedTessellated>(in_gpu_ptr);
#else
assert(0 && "Attempted to copy UnplacedTessellated to GPU. This is not yet supported.");
return DevicePtr<cuda::VUnplacedVolume>(nullptr);
#endif
}
DevicePtr<cuda::VUnplacedVolume> UnplacedTessellated::CopyToGpu() const
{
#ifdef HYBRID_NAVIGATOR_PORTED_TO_CUDA
return CopyToGpuImpl<UnplacedTessellated>();
#else
assert(0 && "Attempted to copy UnplacedTessellated to GPU. This is not yet supported.");
return DevicePtr<cuda::VUnplacedVolume>(nullptr);
#endif
}
#ifndef HYBRID_NAVIGATOR_PORTED_TO_CUDA
template <>
size_t DevicePtr<vecgeom::cuda::LoopSpecializedVolImplHelper<vecgeom::cuda::TessellatedImplementation,
translation::kGeneric, rotation::kGeneric>>::SizeOf()
{
return 0;
}
template <>
template <>
void DevicePtr<
cuda::LoopSpecializedVolImplHelper<cuda::TessellatedImplementation, translation::kGeneric, rotation::kGeneric>>::
Construct(DevicePtr<vecgeom::cuda::LogicalVolume>, DevicePtr<vecgeom::cuda::Transformation3D>, unsigned int, int,
int) const
{
return;
}
template <>
void ConstructManyOnGpu<
cuda::LoopSpecializedVolImplHelper<cuda::TessellatedImplementation, translation::kGeneric, rotation::kGeneric>
/*, ... inferred from arguments */>(std::size_t nElement, DevicePtr<cuda::VPlacedVolume> const * gpu_ptrs,
DevicePtr<cuda::LogicalVolume> const * logical,
DevicePtr<cuda::Transformation3D> const * trafo,
decltype(std::declval<VPlacedVolume>().id()) const * ids,
decltype(std::declval<VPlacedVolume>().GetCopyNo()) const * copyNos,
decltype(std::declval<VPlacedVolume>().GetChildId()) const * childIds)
{
}
#endif
#endif // VECGEOM_CUDA_INTERFACE
} // namespace VECGEOM_IMPL_NAMESPACE
#ifdef VECCORE_CUDA
namespace cxx {
template size_t DevicePtr<cuda::UnplacedTessellated>::SizeOf();
template void DevicePtr<cuda::UnplacedTessellated>::Construct() const;
template void ConstructManyOnGpu<cuda::UnplacedTessellated /*, ... inferred from arguments */>(
std::size_t nElement, DevicePtr<cuda::VPlacedVolume> const * gpu_ptrs,
DevicePtr<cuda::LogicalVolume> const * logical, DevicePtr<cuda::Transformation3D> const * trafo,
decltype(std::declval<VPlacedVolume>().id()) const * ids,
decltype(std::declval<VPlacedVolume>().GetCopyNo()) const * copyNos,
decltype(std::declval<VPlacedVolume>().GetChildId()) const * childIds);
} // namespace cxx
#endif
} // namespace vecgeom
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