Toggle navigation
PlayRho
0.9.0
GitHub
Main Page
Modules
Classes
Files
Examples
File List
File Members
Common
Transformation.hpp
Go to the documentation of this file.
1
/*
2
* Original work Copyright (c) 2006-2009 Erin Catto http://www.box2d.org
3
* Modified work Copyright (c) 2017 Louis Langholtz https://github.com/louis-langholtz/PlayRho
4
*
5
* This software is provided 'as-is', without any express or implied
6
* warranty. In no event will the authors be held liable for any damages
7
* arising from the use of this software.
8
*
9
* Permission is granted to anyone to use this software for any purpose,
10
* including commercial applications, and to alter it and redistribute it
11
* freely, subject to the following restrictions:
12
*
13
* 1. The origin of this software must not be misrepresented; you must not
14
* claim that you wrote the original software. If you use this software
15
* in a product, an acknowledgment in the product documentation would be
16
* appreciated but is not required.
17
* 2. Altered source versions must be plainly marked as such, and must not be
18
* misrepresented as being the original software.
19
* 3. This notice may not be removed or altered from any source distribution.
20
*/
21
22
#ifndef PLAYRHO_COMMON_TRANSFORMATION_HPP
23
#define PLAYRHO_COMMON_TRANSFORMATION_HPP
24
25
#include <
PlayRho/Common/Settings.hpp
>
26
#include <
PlayRho/Common/Vector2.hpp
>
27
#include <
PlayRho/Common/UnitVec.hpp
>
28
31
32
namespace
playrho
{
33
namespace
d2 {
34
41
struct
Transformation
42
{
43
Length2
p
=
Length2
{};
44
UnitVec
q
=
UnitVec::GetRight
();
45
};
46
48
PLAYRHO_CONSTEXPR
const
auto
Transform_identity
=
Transformation
{
49
Length2
{0_m, 0_m},
UnitVec::GetRight
()
50
};
51
54
PLAYRHO_CONSTEXPR
inline
bool
operator==
(
Transformation
lhs,
Transformation
rhs) noexcept
55
{
56
return
(lhs.p == rhs.p) && (lhs.q == rhs.q);
57
}
58
61
PLAYRHO_CONSTEXPR
inline
bool
operator!=
(
Transformation
lhs,
Transformation
rhs) noexcept
62
{
63
return
(lhs.p != rhs.p) || (lhs.q != rhs.q);
64
}
65
66
}
// namespace d2
67
70
template
<>
71
PLAYRHO_CONSTEXPR
inline
bool
IsValid
(
const
d2::Transformation
& value) noexcept
72
{
73
return
IsValid
(value.p) &&
IsValid
(value.q);
74
}
75
76
}
// namespace playrho
77
78
#endif // PLAYRHO_COMMON_TRANSFORMATION_HPP