yuzu/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 <algorithm>
#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 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_) {}
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[[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 {
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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