Belle II Software
release-05-01-25
EveVisBField.h
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#pragma once
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#include <framework/geometry/BFieldManager.h>
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#include <TEveTrackPropagator.h>
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namespace
Belle2
{
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class
EveVisBField
:
public
TEveMagField {
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public
:
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EveVisBField
(): TEveMagField() { }
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virtual
~
EveVisBField
() { }
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virtual
TEveVector
GetField
(Float_t x, Float_t y, Float_t z)
const override
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{
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TEveVector v;
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v.Set(
BFieldManager::getField
(x, y, z) /
Unit::T
);
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v.fZ *= -1;
//Eve has inverted B field convention
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v.fZ -= 1e-6;
//field must not be zero!
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return
v;
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}
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virtual
Float_t
GetMaxFieldMag
()
const override
{
return
1.5; }
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};
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}
Belle2::BFieldManager::getField
static void getField(const double *pos, double *field)
return the magnetic field at a given position.
Definition:
BFieldManager.h:110
Belle2::Unit::T
static const double T
[tesla]
Definition:
Unit.h:130
Belle2
Abstract base class for different kinds of events.
Definition:
MillepedeAlgorithm.h:19
Belle2::EveVisBField::GetMaxFieldMag
virtual Float_t GetMaxFieldMag() const override
maximal field strength (is this correct?)
Definition:
EveVisBField.h:29
Belle2::EveVisBField
Provide magnetic field values for TEveTrackPropagator.
Definition:
EveVisBField.h:12
Belle2::EveVisBField::GetField
virtual TEveVector GetField(Float_t x, Float_t y, Float_t z) const override
return field strength at given coordinates, using Eve conventions.
Definition:
EveVisBField.h:18
display
include
EveVisBField.h
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