FWPFMaths Namespace Reference

Functions
TEveVector	calculateCentre (const float *vertices)
float	calculateEt (const TEveVector &centre, float e)
bool	checkIntersect (const TEveVector &vec, float r)
TEveVector	cross (const TEveVector &v1, const TEveVector &v2)
float	dot (const TEveVector &v1, const TEveVector &v2)
float	linearInterpolation (const TEveVector &p1, const TEveVector &p2, float r)
TEveVector	lineCircleIntersect (const TEveVector &v1, const TEveVector &v2, float r)
TEveVector	lineLineIntersect (const TEveVector &v1, const TEveVector &v2, const TEveVector &v3, const TEveVector &v4)
float	sgn (float val)

Function Documentation

calculateCentre()

TEveVector FWPFMaths::calculateCentre

(

const float *

vertices

)

calculateEt()

float FWPFMaths::calculateEt	(	const TEveVector &	centre,
		float	e
	)

Definition at line 94 of file FWPFMaths.cc.

References MillePedeFileConverter_cfg::e, and l1tnanotables_cff::et.

Referenced by FWPFCandidateDetailView::addHits(), FWPFClusterRPZProxyBuilder::build(), FWPFEcalRecHitRPProxyBuilder::build(), FWPFEcalRecHitLegoProxyBuilder::build(), FWPFClusterRPZUtils::buildRhoPhiClusterLineSet(), FWPFClusterRPZUtils::buildRhoZClusterLineSet(), FWECALDetailViewBuilder::fillEtaPhi(), FWPFBlockProxyBuilder::setupClusterElement(), FWPFClusterRPZProxyBuilder::sharedBuild(), FWPFClusterLegoProxyBuilder::sharedBuild(), and FWPFCandidateDetailView::voteMaxEtEVal().

                                                       {
    TEveVector vec = centre;
    float et;

    vec.Normalize();
    vec *= e;
    et = vec.Perp();

    return et;
  }

checkIntersect()

bool FWPFMaths::checkIntersect	(	const TEveVector &	vec,
		float	r
	)

Definition at line 84 of file FWPFMaths.cc.

References h, AlCaHLTBitMon_ParallelJobs::p, and mathSSE::sqrt().

Referenced by FWPFTrackUtils::getCollisionMarkers(), and FWPFTrackUtils::setupLegoTrack().

                                                    {
    float h = sqrt((p.fX * p.fX) + (p.fY * p.fY));

    if (h >= r)
      return true;

    return false;
  }

cross()

TEveVector FWPFMaths::cross	(	const TEveVector &	v1,
		const TEveVector &	v2
	)

Definition at line 10 of file FWPFMaths.cc.

Referenced by lineLineIntersect().

                                                               {
    TEveVector vec;

    vec.fX = (v1.fY * v2.fZ) - (v1.fZ * v2.fY);
    vec.fY = (v1.fZ * v2.fX) - (v1.fX * v2.fZ);
    vec.fZ = (v1.fX * v2.fY) - (v1.fY * v2.fX);

    return vec;
  }

dot()

float FWPFMaths::dot	(	const TEveVector &	v1,
		const TEveVector &	v2
	)

Definition at line 21 of file FWPFMaths.cc.

References mps_fire::result.

Referenced by lineLineIntersect().

                                                        {
    float result = (v1.fX * v2.fX) + (v1.fY * v2.fY) + (v1.fZ * v1.fZ);

    return result;
  }

linearInterpolation()

float FWPFMaths::linearInterpolation	(	const TEveVector &	p1,
		const TEveVector &	p2,
		float	r
	)

Definition at line 74 of file FWPFMaths.cc.

References LaserDQM_cfg::p1, and SiStripOfflineCRack_cfg::p2.

Referenced by FWPFTrackUtils::getCollisionMarkers(), and FWPFTrackUtils::setupLegoTrack().

                                                                                 {
    float y;

    y = ((z - fabs(p1.fZ)) * p2.fY) + ((fabs(p2.fZ) - z) * p1.fY);
    y /= (fabs(p2.fZ) - fabs(p1.fZ));

    return y;
  }

lineCircleIntersect()

TEveVector FWPFMaths::lineCircleIntersect	(	const TEveVector &	v1,
		const TEveVector &	v2,
		float	r
	)

Definition at line 28 of file FWPFMaths.cc.

References PVValHelper::dx, PVValHelper::dy, mps_fire::result, sgn(), mathSSE::sqrt(), and x.

Referenced by FWPFTrackUtils::getCollisionMarkers(), and FWPFTrackUtils::setupLegoTrack().

                                                                                      {
    // Definitions
    float x, y;
    float dx = v1.fX - v2.fX;
    float dy = v1.fY - v2.fY;
    float dr = sqrt((dx * dx) + (dy * dy));
    float D = ((v2.fX * v1.fY) - (v1.fX * v2.fY));

    float rtDescrim = sqrt(((r * r) * (dr * dr)) - (D * D));

    if (dy < 0)  // Going down
    {
      x = (D * dy) - ((sgn(dy) * dx) * rtDescrim);
      x /= (dr * dr);

      y = (-D * dx) - (fabs(dy) * rtDescrim);
      y /= (dr * dr);
    } else {
      x = (D * dy) + ((sgn(dy) * dx) * rtDescrim);
      x /= (dr * dr);

      y = (-D * dx) + (fabs(dy) * rtDescrim);
      y /= (dr * dr);
    }

    TEveVector result = TEveVector(x, y, 0.001);
    return result;
  }

lineLineIntersect()

TEveVector FWPFMaths::lineLineIntersect	(	const TEveVector &	v1,
		const TEveVector &	v2,
		const TEveVector &	v3,
		const TEveVector &	v4
	)

Definition at line 58 of file FWPFMaths.cc.

References a, b, DummyCfis::c, cross(), dot(), LaserDQM_cfg::p1, SiStripOfflineCRack_cfg::p2, chargedHadronTrackResolutionFilter_cfi::p3, mps_fire::result, alignCSCRings::s, and heppy_batch::val.

Referenced by FWPFTrackUtils::getCollisionMarkers(), and FWPFTrackUtils::setupLegoTrack().

                                                                                                                       {
    TEveVector a = p2 - p1;
    TEveVector b = p4 - p3;
    TEveVector c = p3 - p1;
    TEveVector result;
    float s, val;

    s = dot(cross(c, b), cross(a, b));
    val = dot(cross(a, b), cross(a, b));
    s /= val;

    result = p1 + (a * s);
    return result;
  }

sgn()

float FWPFMaths::sgn

(

float

val

)

Definition at line 7 of file FWPFMaths.cc.

References heppy_batch::val.

Referenced by ThirdHitPredictionFromCircle::angle(), GlobalCoordsObtainer::calc_atan_lut(), HFRecoEcalCandidateAlgo::correctEPosition(), ThirdHitPredictionFromCircle::curvature(), GlobalCoordsObtainer::generate_luts(), OmtfAngleConverter::getGlobalEta(), AngleConverter::getGlobalEta(), ThirdHitPredictionFromCircle::HelixRZ::HelixRZ(), lineCircleIntersect(), OmtfName::OmtfName(), ThirdHitPredictionFromCircle::phi(), OmtfName::position(), and OmtfName::tftype().

{ return (val < 0) ? -1 : 1; }