sources/geometry.h

changeset 1
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child 69
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0:792876306489 1:4dd5bde4e777
1 /*
2 Copyright 2014 Teemu Piippo
3 All rights reserved.
4
5 Redistribution and use in source and binary forms, with or without
6 modification, are permitted provided that the following conditions
7 are met:
8
9 1. Redistributions of source code must retain the above copyright
10 notice, this list of conditions and the following disclaimer.
11 2. Redistributions in binary form must reproduce the above copyright
12 notice, this list of conditions and the following disclaimer in the
13 documentation and/or other materials provided with the distribution.
14 3. Neither the name of the copyright holder nor the names of its
15 contributors may be used to endorse or promote products derived from
16 this software without specific prior written permission.
17
18 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
19 "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
20 TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
21 PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER
22 OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
23 EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
24 PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
25 PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
26 LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
27 NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
28 SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29 */
30
31 #pragma once
32
33 struct Position
34 {
35 int x;
36 int y;
37
38 Position (int x, int y) :
39 x (x),
40 y (y) {}
41
42 Position() :
43 x (0),
44 y (0) {}
45
46 inline METHOD operator< (const Position& other) const -> bool;
47 inline METHOD operator> (const Position& other) const -> bool;
48 inline METHOD operator== (const Position& other) const -> bool;
49 inline METHOD operator<= (const Position& other) const -> bool;
50 inline METHOD operator>= (const Position& other) const -> bool;
51 inline METHOD operator!= (const Position& other) const -> bool;
52 };
53
54 // -------------------------------------------------------------------------------------------------
55
56 struct Size
57 {
58 int width;
59 int height;
60
61 Size (int width, int height) :
62 width (width),
63 height (height) {}
64
65 Size() :
66 width (0),
67 height (0) {}
68
69 auto area() const -> int
70 {
71 return width * height;
72 }
73 };
74
75 // -------------------------------------------------------------------------------------------------
76
77 struct Rectangle : Position, Size
78 {
79 Rectangle (int x, int y, int width, int height) :
80 Position (x, y),
81 Size (width, height) {}
82
83 Rectangle() :
84 Position(),
85 Size() {}
86 };
87
88 // -------------------------------------------------------------------------------------------------
89
90 inline METHOD
91 Position::operator< (const Position& other) const -> bool
92 {
93 if (y != other.y)
94 return y < other.y;
95
96 return x < other.x;
97 }
98
99 // -------------------------------------------------------------------------------------------------
100
101 inline METHOD
102 Position::operator> (const Position& other) const -> bool
103 {
104 if (y != other.y)
105 return y > other.y;
106
107 return x > other.x;
108 }
109
110 // -------------------------------------------------------------------------------------------------
111
112 inline METHOD
113 Position::operator== (const Position& other) const -> bool
114 {
115 return y == other.y and x == other.x;
116 }
117
118 // -------------------------------------------------------------------------------------------------
119
120 inline METHOD
121 Position::operator<= (const Position& other) const -> bool
122 {
123 return not operator> (other);
124 }
125
126 // -------------------------------------------------------------------------------------------------
127
128 inline METHOD
129 Position::operator>= (const Position& other) const -> bool
130 {
131 return not operator< (other);
132 }
133
134 // -------------------------------------------------------------------------------------------------
135
136 inline METHOD
137 Position::operator!= (const Position& other) const -> bool
138 {
139 return not operator== (other);
140 }

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