13 #include <tracking/trackFindingVXD/filterMap/filterFramework/SelectionVariable.h>
14 #include <tracking/trackFindingVXD/filterTools/SelectionVariableHelper.h>
15 #include <framework/geometry/B2Vector3.h>
16 #include <boost/math/special_functions/sign.hpp>
22 #define ZIGGZAGGRZ_NAME ZiggZaggRZ
34 template <
typename Po
intType,
typename Po
intContainerType >
42 static int value(
const PointContainerType& hitContainer)
44 const unsigned nHits = hitContainer.size();
45 if (nHits < 4)
return 1;
48 using boost::math::sign;
50 std::vector<B2Vector3D> vecRZ;
52 for (
const auto* hit : hitContainer) {
53 vecRZ.push_back(
B2Vector3D(Helper::calcPerp(*hit) , hit->Z(), 0.));
56 std::vector<int> chargeSigns;
57 chargeSigns.reserve(nHits - 2);
58 for (
unsigned i = 0; i < nHits - 2; ++i) {
59 int signVal = sign((vecRZ.at(i + 1) - vecRZ.at(i + 2)).Orthogonal() * (vecRZ.at(i) - vecRZ.at(i + 1)));
60 chargeSigns.push_back(signVal);
63 std::sort(chargeSigns.begin(), chargeSigns.end());
64 auto newEnd = std::unique(chargeSigns.begin(), chargeSigns.end());
66 return std::distance(chargeSigns.begin(), newEnd);