1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
|
#ifndef VECTOR2_HPP_
#define VECTOR2_HPP_
#include <string>
#include <type_traits>
template<typename T>
struct vector2 {
static_assert(std::is_arithmetic<T>::value, "vector2 members must be an arithmetic type (i.e. numbers)");
T x, y;
vector2(T _x = 0, T _y = 0)
: x(_x), y(_y) {}
// format: "3, 5"
vector2(const std::string& s) {
*this = s;
}
vector2<T>& operator=(const T& value) {
x = y = value;
return *this;
}
vector2<T>& operator=(const std::string& s) {
auto comma = s.find(',');
x = std::stoi(s.substr(0, comma));
y = std::stoi(s.substr(comma + 1));
return *this;
}
// addition
vector2<T> operator+(const vector2<T>& v) const {
return vector2<T>(x + v.x, y + v.y);
}
vector2<T> operator+(const T& n) const {
return vector2<T>(x + n, y + n);
}
// subtraction
vector2<T> operator-(const vector2<T>& v) const {
return vector2<T>(x - v.x, y - v.y);
}
vector2<T> operator-(const T& n) const {
return vector2<T>(x - n, y - n);
}
// multiplication
vector2<T> operator*(const vector2<T>& v) const {
return vector2<T>(x * v.x, y * v.y);
}
vector2<T> operator*(const T& n) const {
return vector2<T>(x * n, y * n);
}
vector2<T> operator*=(const T& n) {
x *= n, y *= n;
return *this;
}
// division
vector2<T> operator/(const vector2<T>& v) const {
return vector2<T>(x / v.x, y / v.y);
}
vector2<T> operator/(const T& n) const {
return vector2<T>(x / n, y / n);
}
vector2<T> operator/=(const T& n) {
x /= n, y /= n;
return *this;
}
// compare
bool operator==(const vector2<T>& v) const {
return (x == v.x) && (y == v.y);
}
bool operator>(const vector2<T>& v) const {
return (x > v.x) && (y > v.y);
}
bool operator<(const vector2<T>& v) const {
return (x < v.x) && (y < v.y);
}
bool operator<=(const T& n) const {
return (x <= n) && (y <= n);
}
// other functions
std::string toString(void) const {
return "(" + std::to_string(x) + ", " + std::to_string(y) + ")";
}
};
using vec2 = vector2<float>;
using dim2 = vector2<int>;
#endif // VECTOR2_HPP_
|
