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
|
// SPDX-FileCopyrightText: 2013 Dolphin Emulator Project
// SPDX-FileCopyrightText: 2014 Citra Emulator Project
// SPDX-License-Identifier: GPL-2.0-or-later
#pragma once
#include <algorithm>
#include <cstdlib>
#include <type_traits>
namespace Common {
constexpr float PI = 3.1415926535f;
template <class T>
struct Rectangle {
T left{};
T top{};
T right{};
T bottom{};
constexpr Rectangle() = default;
constexpr Rectangle(T width, T height) : right(width), bottom(height) {}
constexpr Rectangle(T left_, T top_, T right_, T bottom_)
: left(left_), top(top_), right(right_), bottom(bottom_) {}
[[nodiscard]] constexpr T Left() const {
return left;
}
[[nodiscard]] constexpr T Top() const {
return top;
}
[[nodiscard]] constexpr T Right() const {
return right;
}
[[nodiscard]] constexpr T Bottom() const {
return bottom;
}
[[nodiscard]] constexpr bool IsEmpty() const {
return (GetWidth() <= 0) || (GetHeight() <= 0);
}
[[nodiscard]] constexpr T GetWidth() const {
if constexpr (std::is_floating_point_v<T>) {
return std::abs(right - left);
} else {
return static_cast<T>(std::abs(static_cast<std::make_signed_t<T>>(right - left)));
}
}
[[nodiscard]] constexpr T GetHeight() const {
if constexpr (std::is_floating_point_v<T>) {
return std::abs(bottom - top);
} else {
return static_cast<T>(std::abs(static_cast<std::make_signed_t<T>>(bottom - top)));
}
}
[[nodiscard]] constexpr Rectangle<T> TranslateX(const T x) const {
return Rectangle{left + x, top, right + x, bottom};
}
[[nodiscard]] constexpr Rectangle<T> TranslateY(const T y) const {
return Rectangle{left, top + y, right, bottom + y};
}
[[nodiscard]] constexpr Rectangle<T> Scale(const float s) const {
return Rectangle{left, top, static_cast<T>(static_cast<float>(left + GetWidth()) * s),
static_cast<T>(static_cast<float>(top + GetHeight()) * s)};
}
[[nodiscard]] constexpr bool operator==(const Rectangle<T>& rhs) const {
return (left == rhs.left) && (top == rhs.top) && (right == rhs.right) &&
(bottom == rhs.bottom);
}
[[nodiscard]] constexpr bool operator!=(const Rectangle<T>& rhs) const {
return !operator==(rhs);
}
[[nodiscard]] constexpr bool Intersect(const Rectangle<T>& with, Rectangle<T>* result) const {
result->left = std::max(left, with.left);
result->top = std::max(top, with.top);
result->right = std::min(right, with.right);
result->bottom = std::min(bottom, with.bottom);
return !result->IsEmpty();
}
};
template <typename T>
Rectangle(T, T, T, T) -> Rectangle<T>;
} // namespace Common
|
