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FieldManager.h
Go to the documentation of this file.
Or view
the newest version in sPHENIX GitHub for file FieldManager.h
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/* Copyright 2008-2010, Technische Universitaet Muenchen,
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Authors: Christian Hoeppner & Sebastian Neubert & Johannes Rauch
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This file is part of GENFIT.
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GENFIT is free software: you can redistribute it and/or modify
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it under the terms of the GNU Lesser General Public License as published
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by the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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GENFIT is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with GENFIT. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef genfit_FieldManager_h
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#define genfit_FieldManager_h
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#include "
AbsBField.h
"
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#include "
IO.h
"
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#include <stdexcept>
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#include <string>
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#define CACHE
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namespace
genfit {
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#ifdef CACHE
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struct
fieldCache
{
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double
posX
;
double
posY
;
double
posZ
;
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double
Bx
;
double
By
;
double
Bz
;
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};
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#endif
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class
FieldManager
{
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public
:
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AbsBField
*
getField
(){
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checkInitialized
();
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return
field_
;
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}
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TVector3
getFieldVal
(
const
TVector3&
position
){
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checkInitialized
();
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return
field_
->
get
(position);
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}
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#ifdef CACHE
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void
getFieldVal
(
const
double
& posX,
const
double
& posY,
const
double
& posZ,
double
& Bx,
double
& By,
double
&
Bz
);
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#else
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inline
void
getFieldVal
(
const
double
& posX,
const
double
& posY,
const
double
& posZ,
double
& Bx,
double
& By,
double
&
Bz
) {
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checkInitialized
();
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return
field_
->
get
(posX, posY, posZ, Bx, By, Bz);
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}
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#endif
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void
init
(
AbsBField
*
b
) {
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field_
=
b
;
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}
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void
destruct
() {
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if
(
instance_
!=
nullptr
) {
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delete
instance_
;
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instance_
=
nullptr
;
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}
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}
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bool
isInitialized
() {
return
field_
!=
nullptr
; }
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void
checkInitialized
() {
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if
(!
isInitialized
()){
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errorOut
<<
"FieldManager hasn't been initialized with a correct AbsBField pointer!"
<< std::endl;
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std::string
msg
(
"FieldManager hasn't been initialized with a correct AbsBField pointer!"
);
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std::runtime_error
err
(msg);
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throw
err
;
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}
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}
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static
void
checkInstanciated
() {
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if
(
instance_
==
nullptr
){
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errorOut
<<
"FieldManager hasn't been instantiated yet, call getInstance() and init() before getFieldVal()!"
<< std::endl;
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std::string
msg
(
"FieldManager hasn't been instantiated yet, call getInstance() and init() before getFieldVal()!"
);
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std::runtime_error
err
(msg);
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throw
err
;
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}
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}
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#ifdef CACHE
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void
useCache
(
bool
opt =
true
,
unsigned
int
nBuckets = 8);
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#else
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void
useCache
(
bool
opt =
true
,
unsigned
int
nBuckets = 8) {
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std::cerr <<
"genfit::FieldManager::useCache() - FieldManager is compiled w/o CACHE, no caching will be done!"
<< std::endl;
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}
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#endif
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static
FieldManager
*
getInstance
(){
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if
(
instance_
==
nullptr
) {
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instance_
=
new
FieldManager
();
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}
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return
instance_
;
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}
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private
:
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FieldManager
() {}
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#ifdef CACHE
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~FieldManager
() {
delete
cache_
; }
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#else
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~FieldManager
() { }
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#endif
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static
FieldManager
*
instance_
;
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static
AbsBField
*
field_
;
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#ifdef CACHE
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static
bool
useCache_
;
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static
unsigned
int
n_buckets_
;
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static
fieldCache
*
cache_
;
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#endif
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};
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}
/* End of namespace genfit */
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#endif // genfit_FieldManager_h
GenFit
blob
master
core
include
FieldManager.h
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Jin Huang
. updated:
Sat Feb 17 2024 22:18:17
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