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