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suyu/src/common/math_util.h

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// Copyright 2013 Dolphin Emulator Project / 2014 Citra Emulator Project
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#pragma once
#include <cstdlib>
#include <type_traits>
namespace Common {
constexpr float PI = 3.1415926535f;
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template <class T>
struct Rectangle {
T left{};
T top{};
T right{};
T bottom{};
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constexpr Rectangle() = default;
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constexpr Rectangle(T left_, T top_, T right_, T bottom_)
: left(left_), top(top_), right(right_), bottom(bottom_) {}
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[[nodiscard]] T GetWidth() const {
if constexpr (std::is_floating_point_v<T>) {
return std::abs(right - left);
} else {
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return std::abs(static_cast<std::make_signed_t<T>>(right - left));
}
}
[[nodiscard]] T GetHeight() const {
if constexpr (std::is_floating_point_v<T>) {
return std::abs(bottom - top);
} else {
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return std::abs(static_cast<std::make_signed_t<T>>(bottom - top));
}
}
[[nodiscard]] Rectangle<T> TranslateX(const T x) const {
return Rectangle{left + x, top, right + x, bottom};
}
[[nodiscard]] Rectangle<T> TranslateY(const T y) const {
return Rectangle{left, top + y, right, bottom + y};
}
[[nodiscard]] Rectangle<T> Scale(const float s) const {
return Rectangle{left, top, static_cast<T>(left + GetWidth() * s),
static_cast<T>(top + GetHeight() * s)};
}
};
template <typename T>
Rectangle(T, T, T, T) -> Rectangle<T>;
} // namespace Common