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#include "VecGeom/base/Config.h"
#ifndef VECGEOM_ENABLE_CUDA
#include <VecCore/VecCore>
#include "test/benchmark/ArgParser.h"
#include "VecGeom/volumes/utilities/VolumeUtilities.h"
#include "VecGeom/base/Stopwatch.h"
#include "VecGeom/volumes/TessellatedStruct.h"
#include "VecGeom/volumes/kernel/TessellatedImplementation.h"
#include "test/core/TessellatedOrb.h"
#ifdef VECGEOM_ROOT
#include "VecGeomTest/Visualizer.h"
#include "TPolyMarker3D.h"
#include "TPolyLine3D.h"
#include "TH1.h"
#include "TGraph.h"
#include "TFile.h"
#include "VecGeom/volumes/Box.h"
#endif
#ifdef NDEBUG
#undef NDEBUG
#endif
#include <cassert>
/* Simple test for the scalability of creation of the tessellated structure.
An orb is split into ngrid theta and phi regions; each cell is represented
as a quadrilateral. The solid will contain 2*(ngrid-1)*ngrid triangle facets */
using namespace vecgeom;
using Real_v = vecgeom::VectorBackend::Real_v;
void RandomDirection(Vector3D<Precision> &direction)
{
Precision phi = RNG::Instance().uniform(0., 2. * kPi);
Precision 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);
}
void RandomPointInBBox(Vector3D<Precision> &point, TessellatedStruct<3, Precision> const &tsl)
{
Vector3D<Precision> rnd(RNG::Instance().uniform(0, 1), RNG::Instance().uniform(0, 1), RNG::Instance().uniform(0, 1));
point = tsl.fMinExtent + rnd * (tsl.fMaxExtent - tsl.fMinExtent);
}
#ifdef VECGEOM_ROOT
void AddFacetToVisualizer(TriangleFacet<Precision> const *facet, Visualizer &visualizer)
{
TPolyLine3D pl(3);
pl.SetLineColor(kBlue);
for (int i = 0; i < 3; i++)
pl.SetNextPoint(facet->fVertices[i].x(), facet->fVertices[i].y(), facet->fVertices[i].z());
visualizer.AddLine(pl);
}
void DrawCluster(TessellatedStruct<3, Precision> const &tsl, size_t icluster, Visualizer &visualizer,
bool boxonly = false)
{
// Draw only segments of the facets which are not shared within the cluster
TPolyLine3D pl(2);
pl.SetLineColor(kBlue);
if (boxonly) {
Vector3D<Precision> minext = tsl.fClusters[icluster]->fMinExtent;
Vector3D<Precision> maxext = tsl.fClusters[icluster]->fMaxExtent;
Vector3D<Precision> dext = maxext - minext;
pl.SetPoint(0, minext.x(), minext.y(), minext.z());
pl.SetPoint(1, minext.x() + dext.x(), minext.y(), minext.z());
visualizer.AddLine(pl);
pl.SetPoint(0, minext.x() + dext.x(), minext.y(), minext.z());
pl.SetPoint(1, minext.x() + dext.x(), minext.y() + dext.y(), minext.z());
visualizer.AddLine(pl);
pl.SetPoint(0, minext.x() + dext.x(), minext.y() + dext.y(), minext.z());
pl.SetPoint(1, minext.x(), minext.y() + dext.y(), minext.z());
visualizer.AddLine(pl);
pl.SetPoint(0, minext.x(), minext.y() + dext.y(), minext.z());
pl.SetPoint(1, minext.x(), minext.y(), minext.z());
visualizer.AddLine(pl);
pl.SetPoint(0, minext.x(), minext.y(), minext.z());
pl.SetPoint(1, minext.x(), minext.y(), minext.z() + dext.z());
visualizer.AddLine(pl);
pl.SetPoint(0, minext.x() + dext.x(), minext.y(), minext.z());
pl.SetPoint(1, minext.x() + dext.x(), minext.y(), minext.z() + dext.z());
visualizer.AddLine(pl);
pl.SetPoint(0, minext.x() + dext.x(), minext.y() + dext.y(), minext.z());
pl.SetPoint(1, minext.x() + dext.x(), minext.y() + dext.y(), minext.z() + dext.z());
visualizer.AddLine(pl);
pl.SetPoint(0, minext.x(), minext.y() + dext.y(), minext.z());
pl.SetPoint(1, minext.x(), minext.y() + dext.y(), minext.z() + dext.z());
visualizer.AddLine(pl);
pl.SetPoint(0, minext.x(), minext.y(), minext.z() + dext.z());
pl.SetPoint(1, minext.x() + dext.x(), minext.y(), minext.z() + dext.z());
visualizer.AddLine(pl);
pl.SetPoint(0, minext.x() + dext.x(), minext.y(), minext.z() + dext.z());
pl.SetPoint(1, minext.x() + dext.x(), minext.y() + dext.y(), minext.z() + dext.z());
visualizer.AddLine(pl);
pl.SetPoint(0, minext.x() + dext.x(), minext.y() + dext.y(), minext.z() + dext.z());
pl.SetPoint(1, minext.x(), minext.y() + dext.y(), minext.z() + dext.z());
visualizer.AddLine(pl);
pl.SetPoint(0, minext.x(), minext.y() + dext.y(), minext.z() + dext.z());
pl.SetPoint(1, minext.x(), minext.y(), minext.z() + dext.z());
visualizer.AddLine(pl);
return;
}
size_t nfacets = 0;
size_t ifacet = 0;
size_t iother = 0;
TriangleFacet<Precision> *facets[kVecSize];
while (ifacet < kVecSize) {
bool add = true;
for (size_t i = 0; i < nfacets; ++i) {
if (tsl.fClusters[icluster]->fFacets[ifacet] == facets[i]) {
ifacet++;
add = false;
break;
}
}
if (add) facets[nfacets++] = tsl.fClusters[icluster]->fFacets[ifacet++];
}
// Loop facets
ifacet = 0;
size_t ivert[2];
while (ifacet < nfacets) {
// loop segments
for (int iseg = 0; iseg < 3; iseg++) {
bool shared = false;
ivert[0] = facets[ifacet]->fIndices[iseg];
ivert[1] = facets[ifacet]->fIndices[(iseg + 1) % 3];
// loop remaining facets
for (iother = 0; iother < nfacets; iother++) {
if (iother == ifacet) continue;
// check if the other facet has the 2 vertices
if (facets[iother]->fIndices[0] != ivert[0] && facets[iother]->fIndices[1] != ivert[0] &&
facets[iother]->fIndices[2] != ivert[0])
continue;
if (facets[iother]->fIndices[0] != ivert[1] && facets[iother]->fIndices[1] != ivert[1] &&
facets[iother]->fIndices[2] != ivert[1])
continue;
// The line is shared
shared = true;
break;
}
if (shared) continue;
// Add the line segment to the visualizer
pl.SetPoint(0, facets[ifacet]->fVertices[iseg].x(), facets[ifacet]->fVertices[iseg].y(),
facets[ifacet]->fVertices[iseg].z());
pl.SetPoint(1, facets[ifacet]->fVertices[(iseg + 1) % 3].x(), facets[ifacet]->fVertices[(iseg + 1) % 3].y(),
facets[ifacet]->fVertices[(iseg + 1) % 3].z());
visualizer.AddLine(pl);
}
ifacet++;
}
}
#endif // VECGEOM_ROOT
#endif // VECGEOM_CUDA
int main(int argc, char *argv[])
{
#ifndef VECGEOM_ENABLE_CUDA
using namespace vecgeom;
// using Real_v = typename VectorBackend::Real_v;
OPTION_INT(ngrid, 100);
OPTION_INT(npoints, 10000);
#ifdef VECGEOM_ROOT
OPTION_INT(vis, 0);
OPTION_INT(scalability, 0);
int ngrid1 = 10;
int i = 0;
const Precision sqrt2 = vecCore::math::Sqrt(2.);
#endif
constexpr Precision r = 10.;
Vector3D<Precision> start(0, 0, 0);
Vector3D<Precision> point;
Vector3D<Precision> *dirs = new Vector3D<Precision>[npoints];
for (int i = 0; i < npoints; ++i)
RandomDirection(dirs[i]);
#ifdef VECGEOM_ROOT
TGraph *gtime = nullptr;
if (scalability) {
gtime = new TGraph(14);
while (ngrid1 < 1000) {
SimpleTessellated *stsl = new SimpleTessellated("test_VecGeomTessellated");
UnplacedTessellated *tsl1 = (UnplacedTessellated *)stsl->GetUnplacedVolume();
int nfacets1 = TessellatedOrb(r, ngrid1, *tsl1);
// Close the solid
Stopwatch timer;
timer.Start();
tsl1->Close();
double tbuild = timer.Stop();
gtime->SetPoint(i++, nfacets1, tbuild);
// Check Distance performance
timer.Start();
for (int i = 0; i < npoints; ++i)
stsl->DistanceToIn(start, dirs[i]);
double trun = timer.Stop();
printf("n=%d ngrid=%d nfacets=%d build time=%g run time=%g\n", i, ngrid1, nfacets1, tbuild, trun);
delete tsl1;
ngrid1 = sqrt2 * double(ngrid1);
}
}
#endif
SimpleTessellated *stsl1 = new SimpleTessellated("test_VecGeomTessellated");
UnplacedTessellated *utsl = (UnplacedTessellated *)stsl1->GetUnplacedVolume();
TessellatedStruct<3, Precision> const &tsl = utsl->GetStruct();
TessellatedOrb(r, ngrid, *utsl);
utsl->Close();
std::cout << "=== Tessellated solid statistics: nfacets = " << tsl.fFacets.size()
<< " nclusters = " << tsl.fClusters.size() << " kVecSize = " << kVecSize << std::endl;
std::cout << " cluster distribution: ";
for (unsigned i = 1; i <= kVecSize; ++i) {
std::cout << i << ": " << tsl.fNcldist[i] << " | ";
}
std::cout << "\n";
// Visualize the facets
#ifdef VECGEOM_ROOT
// Analyze clusters
int nblobs, nfacets;
int nfacetstot = 0;
TH1F *hdispersion = new TH1F("hdispersion", "Cluster dispersion", 100, 0., 10.);
TH1I *hblobs = new TH1I("hblobs", "Blobs in clusters", 8, 0, 8);
for (unsigned icluster = 0; icluster < tsl.fClusters.size(); ++icluster) {
double dispersion = tsl.fClusters[icluster]->ComputeSparsity(nblobs, nfacets);
nfacetstot += nfacets;
hdispersion->Fill(dispersion);
hblobs->Fill(nblobs);
}
printf("Number of facets = %d/%zu\n", nfacetstot, tsl.fFacets.size());
TFile *file = TFile::Open("dispersion.root", "RECREATE");
hdispersion->Write();
hblobs->Write();
if (gtime) gtime->Write();
file->Write();
if (vis) {
Visualizer visualizer;
// Visualize bounding box
Vector3D<Precision> deltas = 0.5 * (tsl.fMaxExtent - tsl.fMinExtent);
Vector3D<Precision> origin = 0.5 * (tsl.fMaxExtent + tsl.fMinExtent);
SimpleBox box("bbox", deltas.x(), deltas.y(), deltas.z());
visualizer.AddVolume(box, Transformation3D(origin.x(), origin.y(), origin.z()));
// Visualize facets
for (auto facet : tsl.fFacets)
AddFacetToVisualizer(facet, visualizer);
// Visualize clusters
// for (unsigned icluster = 0; icluster < tsl.fClusters.size(); ++icluster)
// DrawCluster(tsl, icluster, visualizer, false);
TPolyMarker3D pm(npoints);
pm.SetMarkerColor(kRed);
pm.SetMarkerStyle(7);
// Test contains function
for (int i = 0; i < npoints; ++i) {
RandomPointInBBox(point, tsl);
if (0) {
// Visualize a specific point/direction
point.Set(-8, 8, 0);
Vector3D<Precision> direction(-0.74608321159322855, -0.28587882094198169, -0.60135941093123035);
pm.SetNextPoint(point[0], point[1], point[2]);
TPolyLine3D pl(2);
pl.SetLineColor(kRed);
pl.SetNextPoint(point[0], point[1], point[2]);
point += direction * 25;
pm.SetNextPoint(point[0], point[1], point[2]);
pl.SetNextPoint(point[0], point[1], point[2]);
visualizer.AddLine(pl);
break;
}
bool contains;
TessellatedImplementation::Contains<Precision, bool>(tsl, point, contains);
if (contains) pm.SetNextPoint(point[0], point[1], point[2]);
}
// Test distance to out from origin
/*
for (int i = 0; i < npoints; ++i) {
tsl.DistanceToSolid<false>(start, dirs[i], InfinityLength<Precision>(), distance, ifacet);
point = start + distance * dirs[i];
pm.SetNextPoint(point[0], point[1], point[2]);
}
*/
delete[] dirs;
visualizer.AddPoints(pm);
visualizer.Show();
return 0;
}
#endif // VECGEOM_ROOT
#endif
return 0;
}
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