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#include "VecGeomTest/Visualizer.h"
#include "VecGeom/volumes/utilities/VolumeUtilities.h"
#include "TPolyMarker3D.h"
#include "VecGeom/base/Vector3D.h"
#include "VecGeom/volumes/CutTube.h"
#include "test/benchmark/ArgParser.h"
#ifdef VECGEOM_ROOT
#include "TGeoTube.h"
#endif
#ifdef VECGEOM_GEANT4
#include "G4CutTubs.hh"
#endif
using namespace vecgeom;
void RandomDirection(Vector3D<double> &direction)
{
double phi = RNG::Instance().uniform(0., 2. * kPi);
double theta = std::acos(1. - 2. * RNG::Instance().uniform(0, 1));
direction.x() = std::sin(theta) * std::cos(phi);
direction.y() = std::sin(theta) * std::sin(phi);
direction.z() = std::cos(theta);
}
int main(int argc, char *argv[])
{
// -test 0 - points on surface, checking Inside
// 1 - points inside
OPTION_INT(npoints, 10000);
OPTION_DOUBLE(rmin, 3);
OPTION_DOUBLE(rmax, 5);
OPTION_DOUBLE(dz, 10);
OPTION_DOUBLE(sphi, 0);
OPTION_DOUBLE(dphi, 2 * kPi / 3);
OPTION_DOUBLE(thb, 3 * kPi / 4);
OPTION_DOUBLE(phib, kPi / 3);
OPTION_DOUBLE(tht, kPi / 4);
OPTION_DOUBLE(phit, 2 * kPi / 3);
OPTION_INT(test, 0);
OPTION_INT(nsamples, 10000000);
const char *stest[] = {
"=== Testing Inside and Safety for points on surface ===", "=== Testing Contains and SafetyToOut ===",
"=== Testing DistanceToIn and SafetyToIn ===", "=== Testing DistanceToOut ==="};
Vector3D<double> nbottom(std::sin(thb) * std::cos(phib), std::sin(thb) * std::sin(phib), std::cos(thb));
Vector3D<double> ntop(std::sin(tht) * std::cos(phit), std::sin(tht) * std::sin(phit), std::cos(tht));
Vector3D<Precision> sample;
Inside_t inside;
bool contains;
SimpleCutTube cuttube("cuttube", rmin, rmax, dz, sphi, dphi, nbottom, ntop);
#ifdef VECGEOM_ROOT
TGeoCtub *rootctub = (TGeoCtub *)cuttube.ConvertToRoot();
printf("ROOT shape parameters:\n");
rootctub->InspectShape();
#endif
#ifdef VECGEOM_GEANT4
G4CutTubs *g4ctub = (G4CutTubs *)cuttube.ConvertToGeant4();
#endif
// Get the extent
Vector3D<Precision> amin, amax;
cuttube.Extent(amin, amax);
std::cout << "VecGeom extent is: "
<< "min: " << amin << " max: " << amax << std::endl;
#ifdef VECGEOM_ROOT
Vector3D<double> amin_root, amax_root;
amin_root.Set(rootctub->GetOrigin()[0] - rootctub->GetDX(), rootctub->GetOrigin()[1] - rootctub->GetDY(),
rootctub->GetOrigin()[2] - rootctub->GetDZ());
amax_root.Set(rootctub->GetOrigin()[0] + rootctub->GetDX(), rootctub->GetOrigin()[1] + rootctub->GetDY(),
rootctub->GetOrigin()[2] + rootctub->GetDZ());
std::cout << "ROOT extent is: "
<< "min: " << amin_root << " max: " << amax_root << std::endl;
#endif
std::cout << "VecGeom surface: " << cuttube.SurfaceArea() << std::endl;
std::cout << "VecGeom capacity: " << cuttube.Capacity() << std::endl;
#ifdef VECGEOM_ROOT
std::cout << "ROOT capacity: " << rootctub->Capacity() << std::endl;
#endif
#ifdef VECGEOM_GEANT4
std::cout << "Geant4 surface: " << g4ctub->GetSurfaceArea() << std::endl;
std::cout << "Geant4 capacity: " << g4ctub->GetCubicVolume() << std::endl;
#endif
if (test > 3) {
printf("=== Unknown test ===\n");
return 1;
}
// Sample volume of the object
int ninside = 0;
for (int i = 0; i < nsamples; ++i) {
sample.Set(RNG::Instance().uniform(amin.x(), amax.x()), RNG::Instance().uniform(amin.y(), amax.y()),
RNG::Instance().uniform(amin.z(), amax.z()));
contains = cuttube.Contains(sample);
if (contains) ninside++;
}
double capacity_sampled =
double(ninside) * (amax.x() - amin.x()) * (amax.y() - amin.y()) * (amax.z() - amin.z()) / nsamples;
double err = capacity_sampled / std::sqrt(ninside);
std::cout << "Sampled capacity: " << capacity_sampled << " +/- " << err << std::endl;
printf("%s\n", stest[test]);
TPolyMarker3D pm(npoints);
pm.SetMarkerColor(kRed);
pm.SetMarkerStyle(6);
Vector3D<double> direction, start;
double distance, safety;
int nerrors = 0;
for (int i = 0; i < npoints; ++i) {
switch (test) {
case 0: // Points on surface test
sample = cuttube.GetUnplacedVolume()->SamplePointOnSurface();
safety = cuttube.SafetyToIn(sample);
inside = cuttube.Inside(sample);
if (inside != EnumInside::kSurface || safety > kTolerance) nerrors++;
break;
case 1: // Contains test
do {
sample.Set(RNG::Instance().uniform(amin.x(), amax.x()), RNG::Instance().uniform(amin.y(), amax.y()),
RNG::Instance().uniform(amin.z(), amax.z()));
contains = cuttube.Contains(sample);
} while (!contains);
safety = cuttube.SafetyToOut(sample);
if (safety < 0 || safety > 100) nerrors++;
break;
case 2: // DistanceToIn test
do {
sample.Set(RNG::Instance().uniform(2 * amin.x(), 2 * amax.x()),
RNG::Instance().uniform(2 * amin.y(), 2 * amax.y()),
RNG::Instance().uniform(2 * amin.z(), 2 * amax.z()));
contains = cuttube.Contains(sample);
if (!contains) {
do {
RandomDirection(direction);
distance = cuttube.DistanceToIn(sample, direction);
} while (distance >= 1e10);
safety = cuttube.SafetyToIn(sample);
sample += distance * direction;
}
} while (contains);
inside = cuttube.Inside(sample);
if (inside != EnumInside::kSurface || safety < 0 || safety > 200) {
distance = cuttube.DistanceToIn(sample - distance * direction, direction);
nerrors++;
}
break;
case 3: // DistanceToOut test
do {
sample.Set(RNG::Instance().uniform(amin.x(), amax.x()), RNG::Instance().uniform(amin.y(), amax.y()),
RNG::Instance().uniform(amin.z(), amax.z()));
contains = cuttube.Contains(sample);
} while (!contains);
// Sample inside cut tube
RandomDirection(direction);
distance = cuttube.DistanceToOut(sample, direction);
sample += distance * direction;
inside = cuttube.Inside(sample);
if (inside != EnumInside::kSurface) nerrors++;
break;
}
pm.SetNextPoint(sample[0], sample[1], sample[2]);
}
printf("=== nerrors = %d\n", nerrors);
Visualizer visualizer;
visualizer.AddVolume(cuttube);
visualizer.AddPoints(pm);
visualizer.Show();
return 0;
}
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