BOSS 7.1.2
BESIII Offline Software System
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Public Member Functions | Static Public Attributes | List of all members
HoughStereo Class Reference

#include <HoughStereo.h>

Public Member Functions

 HoughStereo (double bunchTime, Hough2D *circle, HoughRecHit *rechit)
 
void setAmb (int i)
 
int cald ()
 
void calcu (double x1, double y1, double xc, double yc, double rc, double x_east, double y_east, double z_east, double x_west, double y_west, double z_west, double &theta, double &l, double &z)
 
void setRecHit ()
 
void print ()
 
Hough2D * getCircle () const
 
HoughRecHit * getRecHit () const
 
double getlLeft () const
 
double getlRight () const
 
double getzLeft () const
 
double getzRight () const
 

Static Public Attributes

static int m_debug =0
 

Detailed Description

Definition at line 9 of file HoughStereo.h.

Constructor & Destructor Documentation

◆ HoughStereo()

HoughStereo::HoughStereo ( double bunchTime,
Hough2D * circle,
HoughRecHit * rechit )

Definition at line 9 of file HoughStereo.cxx.

9 :_bunchTime(bunchTime),_circle(circle),_rechit(rechit){
10 _lleft=-99;
11 _zleft=-99;
12 _lright=-99;
13 _zright=-99;
14 _ambig=0;
15 _charge=circle->getCharge();
16}
Hough2D::getCharge
int getCharge() const
Definition Hough2D.h:39

Member Function Documentation

◆ calcu()

void HoughStereo::calcu ( double x1,
double y1,
double xc,
double yc,
double rc,
double x_east,
double y_east,
double z_east,
double x_west,
double y_west,
double z_west,
double & theta,
double & l,
double & z )

Definition at line 119 of file HoughStereo.cxx.

119 {
120 //rphi -> sz
121 if(xc==0||x1-xc==0){
122 theta=0;
123 }
124 else{
125 theta=M_PI-atan2(y1-yc,x1-xc)+atan2(yc,xc);
126 if(theta>2*M_PI){
127 theta=theta-2*M_PI;
128 }
129 if(theta<0){
130 theta=theta+2*M_PI;
131 }
132 }
133 if(_charge == 1 ) theta = 2*M_PI-theta;
134
135 double d1=sqrt((x1-x_west)*(x1-x_west)+(y1-y_west)*(y1-y_west));
136 double d2=sqrt((x_east-x_west)*(x_east-x_west)+(y_east-y_west)*(y_east-y_west));
137// cout<<"d1/d2 "<<d1/d2<<" "<<d1<<" "<<d2<<endl;
138// cout<<"zw ze "<<z_west<<" "<<z_east<<endl;
139 z = z_west-(z_west-z_east)*d1/d2;
140 l = rc*theta;
141}
M_PI
#define M_PI
Definition TConstant.h:4

Referenced by cald().

◆ cald()

int HoughStereo::cald ( )

Definition at line 23 of file HoughStereo.cxx.

23 {
24 bool ok_ambig[2];
25 bool ok[2][2];
26 ok_ambig[0]=true;
27 ok_ambig[1]=true;
28 ok[0][0]=false;
29 ok[0][1]=false;
30 ok[1][0]=false;
31 ok[1][1]=false;
32 double xeast = _rechit->getEastPoint().x();
33 double xwest = _rechit->getWestPoint().x();
34 double yeast = _rechit->getEastPoint().y();
35 double ywest = _rechit->getWestPoint().y();
36 double zeast = _rechit->getEastPoint().z();
37 double zwest = _rechit->getWestPoint().z();
38// cout<<"xeast xwest "<<xeast<<" "<<xwest<<endl;
39 double k = (ywest-yeast)/(xwest-xeast);
40 double b = -k*xeast+yeast;
41 // cout<<" k b "<<k<<" "<<b<<endl;
42 double xc = _circle->getCirX();
43 double yc = _circle->getCirY();
44 double rc = _circle->getCirR();
45// cout<<"xc yc rc "<<xc<<" "<<yc<<" "<<rc<<endl;
46 double drift = _rechit->getDriftDist();
47 //double drift = _rechit->getDriftDistTruth();
48// cout<<"drift "<<_rechit->getDriftDist()<<endl;
49// cout<<"driftTruth "<<_rechit->getDriftDistTruth()<<endl;
50 double x1(999),y1(999);
51 double x2(999),y2(999);
52 double a = k*k+1;
53 double b1 = -2*(xc+k*yc-k*b);
54 double c1 = xc*xc+(yc-b)*(yc-b)-(rc+drift)*(rc+drift);
55 double c2 = xc*xc+(yc-b)*(yc-b)-(rc-drift)*(rc-drift);
56 double delta1 = (b1*b1-4*a*c1);
57 double delta2 = (b1*b1-4*a*c2);
58 if( delta1 <0 ) ok_ambig[0] = false;
59 if( delta2 <0 ) ok_ambig[1] = false;
60 // cout<<"(b1*b1-4*a*c1) "<<(b1*b1-4*a*c1)<<endl;
61 // cout<<"(b1*b1-4*a*c2) "<<(b1*b1-4*a*c2)<<endl;
62 if( delta1>=0 ) {
63 double x1_0 = ( -b1+sqrt(delta1) ) /(2*a);
64 double x1_1 = ( -b1-sqrt(delta1) ) /(2*a);
65// cout<<"x1 0 1 "<<x1_0<<" "<<x1_1<<endl;
66 if( (xeast>=x1_0 && xwest<=x1_0) or (xeast<=x1_0 && xwest>=x1_0) ) ok[0][0] = true;
67 if ( (xeast>=x1_1 && xwest<=x1_1) or (xeast<=x1_1 && xwest>=x1_1) ) ok[0][1]=true;
68 if( ok[0][0] == true && ok[0][1]==false ) x1 = x1_0;
69 if( ok[0][0] == false && ok[0][1]==true ) x1 = x1_1;
70 if( ok[0][0] == true && ok[0][1]==true ) {
71 x1 = x1_0; //??good
72// cout<<" error both ok "<<endl;
73 }
74 if( ok[0][0] == false && ok[0][1]==false ) ok_ambig[0] = false;
75 y1 = k*x1+b;
76 double theta1 = 0;
77 double l1= 0;
78 double z1= 0;
79 if(ok_ambig[0]==true) {
80 calcu(x1,y1,xc,yc,rc,xeast,yeast,zeast,xwest,ywest,zwest,theta1,l1,z1);
81 if(m_debug>0) cout<<" theta1 l1 z1 "<<theta1<<" "<<l1<<" "<<z1<<endl;
82 _zleft = z1;
83 _lleft = l1;
84 }
85 }
86
87 if( delta2>=0){
88 double x2_0 = ( -b1+sqrt(delta2) ) /(2*a);
89 double x2_1 = ( -b1-sqrt(delta2) ) /(2*a);
90// cout<<"x2 0 1 "<<x2_0<<" "<<x2_1<<endl;
91 if( (xeast>=x2_0 && xwest<=x2_0) or (xeast<=x2_0 && xwest>=x2_0) ) ok[1][0] = true;
92 if ( (xeast>=x2_1 && xwest<=x2_1) or (xeast<=x2_1 && xwest>=x2_1) ) ok[1][1]=true;
93 if( ok[1][0] == true && ok[1][1]==false ) x2 = x2_0;
94 if( ok[1][0] == false && ok[1][1]==true ) x2 = x2_1;
95 if( ok[1][0] == true && ok[1][1]==true ) {
96 x2 = x2_0;
97// cout<<" error both ok "<<endl;
98 }
99 if( ok[1][0] == false && ok[1][1]==false ) ok_ambig[1] = false;
100 y2 = k*x2+b;
101 double theta2 = 0;
102 double l2= 0;
103 double z2= 0;
104 if(ok_ambig[1]==true) {
105 calcu(x2,y2,xc,yc,rc,xeast,yeast,zeast,xwest,ywest,zwest,theta2,l2,z2);
106 if(m_debug>0) cout<<" theta2 l2 z2 "<<theta2<<" "<<l2<<" "<<z2<<endl;
107 _zright = z2;
108 _lright = l2;
109 }
110 }
111 if( ok_ambig[0] == true && ok_ambig[1] == false ) return -1;
112 if( ok_ambig[0] == false && ok_ambig[1] == true ) return 1;
113 if( ok_ambig[0] == true && ok_ambig[1] == true ) return 2;
114 if( ok_ambig[0] == false && ok_ambig[1] == false ) return 0;
115 //cout<<" ztruth : "<<_rechit->getZTruth()<<endl;
116}
theta2
@ theta2
Definition TrkKalDeriv.h:24
theta1
@ theta1
Definition TrkKalDeriv.h:24
Hough2D::getCirR
double getCirR() const
Definition Hough2D.h:35
Hough2D::getCirX
double getCirX() const
Definition Hough2D.h:33
Hough2D::getCirY
double getCirY() const
Definition Hough2D.h:34
HoughHit::getDriftDist
double getDriftDist() const
Definition HoughHit.h:69
HoughHit::getWestPoint
HepPoint3D getWestPoint() const
Definition HoughHit.h:59
HoughHit::getEastPoint
HepPoint3D getEastPoint() const
Definition HoughHit.h:58
HoughStereo::m_debug
static int m_debug
Definition HoughStereo.h:26
HoughStereo::calcu
void calcu(double x1, double y1, double xc, double yc, double rc, double x_east, double y_east, double z_east, double x_west, double y_west, double z_west, double &theta, double &l, double &z)
Definition HoughStereo.cxx:119
b
const double b
Definition slope.cxx:9

Referenced by HoughTrack::calzs().

◆ getCircle()

Hough2D * HoughStereo::getCircle ( ) const
inline

Definition at line 20 of file HoughStereo.h.

20{return _circle;}

◆ getlLeft()

double HoughStereo::getlLeft ( ) const
inline

Definition at line 22 of file HoughStereo.h.

22{return _lleft;}

◆ getlRight()

double HoughStereo::getlRight ( ) const
inline

Definition at line 23 of file HoughStereo.h.

23{return _lright;}

◆ getRecHit()

HoughRecHit * HoughStereo::getRecHit ( ) const
inline

Definition at line 21 of file HoughStereo.h.

21{return _rechit;}

◆ getzLeft()

double HoughStereo::getzLeft ( ) const
inline

Definition at line 24 of file HoughStereo.h.

24{return _zleft;}

◆ getzRight()

double HoughStereo::getzRight ( ) const
inline

Definition at line 25 of file HoughStereo.h.

25{return _zright;}

◆ print()

void HoughStereo::print ( )

Definition at line 275 of file HoughStereo.cxx.

275 {
276 cout<<"Hit"<<"("<<_rechit->getLayerId()<<","<<_rechit->getWireId()<<") "<<_rechit->getStyle()<<endl;
277 cout<<" left: "<<_lleft<<","<<_zleft<<endl;
278 cout<<" right: "<<_lright<<","<<_zright<<endl;
279}
HoughHit::getStyle
int getStyle() const
Definition HoughHit.h:106
HoughHit::getLayerId
int getLayerId() const
Definition HoughHit.h:62
HoughHit::getWireId
int getWireId() const
Definition HoughHit.h:63

Referenced by HoughTrack::calzs().

◆ setAmb()

void HoughStereo::setAmb ( int i)

Definition at line 17 of file HoughStereo.cxx.

17 {
18 //initial
19 _ambig=i;
20}

◆ setRecHit()

void HoughStereo::setRecHit ( )

Definition at line 269 of file HoughStereo.cxx.

269 {
270 _rechit->setzAmb( 0 , _zleft);
271 _rechit->setsAmb( 0 , _lleft);
272 _rechit->setzAmb( 1 , _zright);
273 _rechit->setsAmb( 1 , _lright);
274}
HoughRecHit::setzAmb
void setzAmb(int i, double zPos)
Definition HoughRecHit.h:32
HoughRecHit::setsAmb
void setsAmb(int i, double sPos)
Definition HoughRecHit.h:33

Referenced by HoughTrack::calzs().

Member Data Documentation

◆ m_debug

int HoughStereo::m_debug =0
static

Definition at line 26 of file HoughStereo.h.

Referenced by cald(), and MdcHoughFinder::initialize().

The documentation for this class was generated from the following files: