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feat: 增加 asst::Point 的一些工具函数

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Horror Proton
2022-07-21 21:05:45 +08:00
parent e162ddd4af
commit d22c592cd4
1 changed files with 16 additions and 7 deletions
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23
src/MeoAssistant/AsstTypes.h
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@@ -32,28 +32,37 @@ namespace asst
constexpr Point(int x, int y) : x(x), y(y) {}
Point& operator=(const Point&) noexcept = default;
Point& operator=(Point&&) noexcept = default;
Point operator-() const noexcept { return Point(-x, -y); }
Point operator-() const noexcept { return {-x, -y}; }
bool operator==(const Point& rhs) const noexcept { return x == rhs.x && y == rhs.y; }
std::string to_string() const
{
return "[ " + std::to_string(x) + ", " + std::to_string(y) + " ]";
}
static constexpr Point right() { return Point(1, 0); }
static constexpr Point down() { return Point(0, 1); }
static constexpr Point left() { return Point(-1, 0); }
static constexpr Point up() { return Point(0, -1); }
static constexpr Point right() { return {1, 0}; }
static constexpr Point down() { return {0, 1}; }
static constexpr Point left() { return {-1, 0}; }
static constexpr Point up() { return {0, -1}; }
int x = 0;
int y = 0;
#define DEFINE_ASST_POINT_BINARY_OP_AND_ARG_ASSIGN(Op) \
friend Point operator Op (const Point& lhs, const Point& rhs) { return {lhs.x Op rhs.x, lhs.y Op rhs.y}; } \
friend Point& operator Op##= (Point& val, const Point& opd) { val.x Op##= opd.x; val.y Op##= opd.y; return val; }
friend Point operator Op (const Point& lhs, const Point& rhs) noexcept { return {lhs.x Op rhs.x, lhs.y Op rhs.y}; } \
friend Point& operator Op##= (Point& val, const Point& opd) noexcept { val.x Op##= opd.x; val.y Op##= opd.y; return val; }
DEFINE_ASST_POINT_BINARY_OP_AND_ARG_ASSIGN(+)
DEFINE_ASST_POINT_BINARY_OP_AND_ARG_ASSIGN(-)
DEFINE_ASST_POINT_BINARY_OP_AND_ARG_ASSIGN(*)
#undef DEFINE_ASST_POINT_BINARY_OP_AND_ARG_ASSIGN
friend Point operator*(int scalar, const Point& value) noexcept { return {value.x * scalar, value.y * scalar}; }
friend Point operator*(const Point& value, int scalar) noexcept { return {value.x * scalar, value.y * scalar}; }
static int dot(const Point& lhs, const Point& rhs) noexcept { return (lhs.x * rhs.x) + (lhs.y * rhs.y); }
static double distance(const Point& lhs, const Point& rhs) noexcept
{
return std::sqrt(double(std::pow(rhs.x - lhs.x, 2) + std::pow(rhs.y - lhs.y, 2)));
}
double length() const noexcept { return std::sqrt(double(dot(*this, *this))); }
};
struct Rect