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Direction.hpp
Go to the documentation of this file.
Or view
the newest version in sPHENIX GitHub for file Direction.hpp
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// This file is part of the Acts project.
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//
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// Copyright (C) 2016-2018 CERN for the benefit of the Acts project
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//
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// This Source Code Form is subject to the terms of the Mozilla Public
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// License, v. 2.0. If a copy of the MPL was not distributed with this
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// file, You can obtain one at http://mozilla.org/MPL/2.0/.
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#pragma once
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#include "
Acts/Definitions/Algebra.hpp
"
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#include <cassert>
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#include <cstddef>
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#include <iosfwd>
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#include <string>
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namespace
Acts {
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class
Direction
final {
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private
:
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enum class
Value
: int {
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Negative
= -1,
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Positive
= 1,
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};
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public
:
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static
constexpr
auto
Negative
= Value::Negative;
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static
constexpr
auto
Positive
= Value::Positive;
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static
constexpr
auto
Backward
= Value::Negative;
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static
constexpr
auto
Forward
= Value::Positive;
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static
inline
constexpr
Direction
fromScalar
(
ActsScalar
scalar) {
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assert
(scalar != 0);
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return
scalar >= 0 ? Value::Positive : Value::Negative;
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}
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static
inline
constexpr
Direction
fromScalarZeroAsPositive
(
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ActsScalar
scalar) {
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return
scalar >= 0 ? Value::Positive : Value::Negative;
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}
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static
inline
constexpr
Direction
fromIndex
(std::size_t
index
) {
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if
(index == 0
u
) {
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return
Value::Negative;
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}
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return
Value::Positive;
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}
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inline
constexpr std::size_t
index
()
const
{
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if
(
m_value
== Value::Negative) {
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return
0
u
;
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}
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return
1
u
;
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}
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inline
constexpr
int
sign
()
const
{
return
static_cast<
int
>
(
m_value
); }
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inline
constexpr
Direction
invert
()
const
{
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return
(
m_value
== Value::Positive) ? Value::Negative : Value::Positive;
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}
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std::string
toString
()
const
;
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inline
constexpr
Direction
() =
default
;
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inline
constexpr
Direction
(
Value
value
) :
m_value
(value) {}
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inline
constexpr
bool
operator==
(
Direction
other)
const
{
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return
m_value
== other.
m_value
;
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}
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inline
constexpr
bool
operator!=
(
Direction
other)
const
{
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return
m_value
!= other.
m_value
;
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}
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private
:
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Value
m_value
= Value::Positive;
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};
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std::ostream&
operator<<
(std::ostream&
os
,
Direction
dir);
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// Direction * T
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inline
constexpr
int
operator*
(
Direction
dir,
int
value
) {
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return
dir.
sign
() *
value
;
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}
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inline
constexpr
float
operator*
(
Direction
dir,
float
value
) {
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return
dir.
sign
() *
value
;
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}
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inline
constexpr
double
operator*
(
Direction
dir,
double
value
) {
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return
dir.
sign
() *
value
;
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}
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inline
Acts::Vector3
operator*
(
Direction
dir,
const
Acts::Vector3
&
value
) {
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return
dir.
sign
() *
value
;
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}
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// T * Direction
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inline
constexpr
int
operator*
(
int
value
,
Direction
dir) {
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return
value * dir.
sign
();
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}
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inline
constexpr
float
operator*
(
float
value
,
Direction
dir) {
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return
value * dir.
sign
();
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}
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inline
constexpr
double
operator*
(
double
value
,
Direction
dir) {
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return
value * dir.
sign
();
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}
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inline
Acts::Vector3
operator*
(
const
Acts::Vector3
&
value
,
Direction
dir) {
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return
value * dir.
sign
();
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}
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// T *= Direction
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inline
constexpr
int
operator*=
(
int
&
value
,
Direction
dir) {
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value *= dir.
sign
();
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return
value
;
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}
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inline
constexpr
float
operator*=
(
float
&
value
,
Direction
dir) {
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value *= dir.
sign
();
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return
value
;
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}
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inline
constexpr
double
operator*=
(
double
&
value
,
Direction
dir) {
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value *= dir.
sign
();
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return
value
;
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}
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inline
Acts::Vector3
&
operator*=
(
Acts::Vector3
&
value
,
Direction
dir) {
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value *= dir.
sign
();
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return
value
;
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}
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}
// namespace Acts
acts
blob
sPHENIX
Core
include
Acts
Definitions
Direction.hpp
Built by
Jin Huang
. updated:
Sat Feb 17 2024 22:17:32
using
1.8.2 with
sPHENIX GitHub integration