Mir
point.h
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1 /*
2  * Copyright © 2012, 2016 Canonical Ltd.
3  *
4  * This program is free software: you can redistribute it and/or modify it
5  * under the terms of the GNU Lesser General Public License version 2 or 3,
6  * as published by the Free Software Foundation.
7  *
8  * This program is distributed in the hope that it will be useful,
9  * but WITHOUT ANY WARRANTY; without even the implied warranty of
10  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
11  * GNU Lesser General Public License for more details.
12  *
13  * You should have received a copy of the GNU Lesser General Public License
14  * along with this program. If not, see <http://www.gnu.org/licenses/>.
15  *
16  * Authored by: Alexandros Frantzis <alexandros.frantzis@canonical.com>
17  */
18 
19 #ifndef MIR_GEOMETRY_POINT_H_
20 #define MIR_GEOMETRY_POINT_H_
21 
22 #include "dimensions.h"
23 #include <iosfwd>
24 
25 namespace mir
26 {
27 namespace geometry
28 {
29 
30 struct Point
31 {
32  constexpr Point() = default;
33  constexpr Point(Point const&) = default;
34  Point& operator=(Point const&) = default;
35 
36  template<typename XType, typename YType>
37  constexpr Point(XType&& x, YType&& y) : x(x), y(y) {}
38 
39  X x;
40  Y y;
41 };
42 
43 inline constexpr bool operator == (Point const& lhs, Point const& rhs)
44 {
45  return lhs.x == rhs.x && lhs.y == rhs.y;
46 }
47 
48 inline constexpr bool operator != (Point const& lhs, Point const& rhs)
49 {
50  return lhs.x != rhs.x || lhs.y != rhs.y;
51 }
52 
53 inline constexpr Point operator+(Point lhs, DeltaX rhs) { return{lhs.x + rhs, lhs.y}; }
54 inline constexpr Point operator+(Point lhs, DeltaY rhs) { return{lhs.x, lhs.y + rhs}; }
55 
56 inline constexpr Point operator-(Point lhs, DeltaX rhs) { return{lhs.x - rhs, lhs.y}; }
57 inline constexpr Point operator-(Point lhs, DeltaY rhs) { return{lhs.x, lhs.y - rhs}; }
58 
59 inline Point& operator+=(Point& lhs, DeltaX rhs) { lhs.x += rhs; return lhs; }
60 inline Point& operator+=(Point& lhs, DeltaY rhs) { lhs.y += rhs; return lhs; }
61 
62 inline Point& operator-=(Point& lhs, DeltaX rhs) { lhs.x -= rhs; return lhs; }
63 inline Point& operator-=(Point& lhs, DeltaY rhs) { lhs.y -= rhs; return lhs; }
64 
65 std::ostream& operator<<(std::ostream& out, Point const& value);
66 }
67 }
68 
69 #endif /* MIR_GEOMETRY_POINT_H_ */
Definition: splash_session.h:24
X x
Definition: point.h:39
Definition: point.h:30
constexpr DeltaX operator-(DeltaX lhs, DeltaX rhs)
Definition: dimensions.h:119
Y y
Definition: point.h:40
Point & operator=(Point const &)=default
constexpr bool operator !=(Point const &lhs, Point const &rhs)
Definition: point.h:48
constexpr Point()=default
constexpr DeltaX operator+(DeltaX lhs, DeltaX rhs)
Definition: dimensions.h:117
constexpr Point(XType &&x, YType &&y)
Definition: point.h:37
std::ostream & operator<<(std::ostream &out, Displacement const &value)
X & operator-=(X &lhs, DeltaX rhs)
Definition: dimensions.h:129
X & operator+=(X &lhs, DeltaX rhs)
Definition: dimensions.h:127
constexpr bool operator==(Displacement const &lhs, Displacement const &rhs)
Definition: displacement.h:51

Copyright © 2012-2019 Canonical Ltd.
Generated on Fri Feb 1 22:50:25 UTC 2019
This documentation is licensed under the GPL version 2 or 3.