ECCE @ EIC Software
Reference for
ECCE @ EIC
simulation and reconstruction software on GitHub
Home page
Related Pages
Modules
Namespaces
Classes
Files
External Links
File List
File Members
All
Classes
Namespaces
Files
Functions
Variables
Typedefs
Enumerations
Enumerator
Friends
Macros
Groups
Pages
G4GeometryTolerance.hh
Go to the documentation of this file.
Or view
the newest version in sPHENIX GitHub for file G4GeometryTolerance.hh
1
//
2
// ********************************************************************
3
// * License and Disclaimer *
4
// * *
5
// * The Geant4 software is copyright of the Copyright Holders of *
6
// * the Geant4 Collaboration. It is provided under the terms and *
7
// * conditions of the Geant4 Software License, included in the file *
8
// * LICENSE and available at http://cern.ch/geant4/license . These *
9
// * include a list of copyright holders. *
10
// * *
11
// * Neither the authors of this software system, nor their employing *
12
// * institutes,nor the agencies providing financial support for this *
13
// * work make any representation or warranty, express or implied, *
14
// * regarding this software system or assume any liability for its *
15
// * use. Please see the license in the file LICENSE and URL above *
16
// * for the full disclaimer and the limitation of liability. *
17
// * *
18
// * This code implementation is the result of the scientific and *
19
// * technical work of the GEANT4 collaboration. *
20
// * By using, copying, modifying or distributing the software (or *
21
// * any work based on the software) you agree to acknowledge its *
22
// * use in resulting scientific publications, and indicate your *
23
// * acceptance of all terms of the Geant4 Software license. *
24
// ********************************************************************
25
//
26
//
27
//
28
// --------------------------------------------------------------------
29
// GEANT 4 class header file
30
//
31
// Class Description:
32
//
33
// A singleton class for computation and storage of the tolerance values
34
// used by the geometry modeler for precision on boundaries.
35
// The Cartesian tolerance defines the thickness of the surface of the
36
// geometrical shapes for their inner funtions and for the tracking. The
37
// tolerance must be greater than the largest mathematical error from the
38
// shape distance calculation functions. The tolerance is centred on the
39
// surface, e.g. the Inside() method of a solid uses a tolerance dx +/- kTol/2.
40
// The Cartesian tolerance can either be set to a fixed value (1E-9 mm)
41
// or to a value computed on the basis of the maximum extent of the
42
// world volume assigned through the G4GeometryManager at the beginning
43
// of the application -before- any geometrical object is created.
44
45
// ---------------- G4GeometryTolerance ----------------
46
//
47
// Author: G.Cosmo (CERN), October 2006
48
// ------------------------------------------------------------
49
50
#ifndef G4GeometryTolerance_hh
51
#define G4GeometryTolerance_hh
52
53
#include "
G4Types.hh
"
54
55
class
G4GeometryTolerance
56
{
57
friend
class
G4GeometryManager
;
58
59
public
:
// with description
60
61
static
G4GeometryTolerance
*
GetInstance
();
62
// Get a pointer to the unique G4GeometryTolerance,
63
// creating it if necessary and setting the tolerances.
64
G4double
GetSurfaceTolerance
()
const
;
65
// Returns the current Cartesian tolerance of a surface.
66
G4double
GetAngularTolerance
()
const
;
67
// Returns the current angular tolerance.
68
G4double
GetRadialTolerance
()
const
;
69
// Returns the current radial tolerance.
70
71
public
:
// without description
72
73
~G4GeometryTolerance
();
74
// Destructor.
75
76
protected
:
77
78
void
SetSurfaceTolerance
(
G4double
worldExtent);
79
// Sets the Cartesian and Radial surface tolerance to a value computed
80
// from the maximum extent of the world volume. This method
81
// can be called only once, and is done only through the
82
// G4GeometryManager class.
83
84
G4GeometryTolerance
();
85
// Protected constructor.
86
87
private
:
88
89
static
G4ThreadLocal
G4GeometryTolerance
*
fpInstance
;
90
G4double
fCarTolerance
;
91
G4double
fAngTolerance
;
92
G4double
fRadTolerance
;
93
G4bool
fInitialised
;
94
};
95
96
#endif // G4GeometryTolerance_hh
97
geant4
tree
geant4-10.6-release
source
global
management
include
G4GeometryTolerance.hh
Built by
Jin Huang
. updated:
Wed Jun 29 2022 17:25:21
using
1.8.2 with
ECCE GitHub integration