Point.hh

/*
  libSDL2pp - C++ bindings/wrapper for SDL2
  Copyright (C) 2013-2015 Dmitry Marakasov <amdmi3@amdmi3.ru>
 
  This software is provided 'as-is', without any express or implied
  warranty.  In no event will the authors be held liable for any damages
  arising from the use of this software.
 
  Permission is granted to anyone to use this software for any purpose,
  including commercial applications, and to alter it and redistribute it
  freely, subject to the following restrictions:
 
  1. The origin of this software must not be misrepresented; you must not
     claim that you wrote the original software. If you use this software
     in a product, an acknowledgment in the product documentation would be
     appreciated but is not required.
  2. Altered source versions must be plainly marked as such, and must not be
     misrepresented as being the original software.
  3. This notice may not be removed or altered from any source distribution.
*/
 
#ifndef SDL2PP_POINT_HH
#define SDL2PP_POINT_HH
 
#include <iostream>
#include <functional>
 
#include <SDL_rect.h>
 
#include <SDL2pp/Export.hh>
 
namespace SDL2pp {
 
class Rect;
 
class SDL2PP_EXPORT Point : public SDL_Point {
public:
    constexpr Point() : SDL_Point{0, 0} {
    }
 
    constexpr Point(const SDL_Point& point) : SDL_Point{point.x, point.y} {
    }
 
    constexpr Point(int x, int y) : SDL_Point{x, y} {
    }
 
    Point(const Point&) noexcept = default;
 
    Point(Point&&) noexcept = default;
 
    Point& operator=(const Point&) noexcept = default;
 
    Point& operator=(Point&&) noexcept = default;
 
    constexpr int GetX() const {
        return x;
    }
 
    Point& SetX(int nx) {
        x = nx;
        return *this;
    }
 
    constexpr int GetY() const {
        return y;
    }
 
    Point& SetY(int ny) {
        y = ny;
        return *this;
    }
 
    constexpr Point operator-() const {
        return Point(-x, -y);
    }
 
    constexpr Point operator+(const Point& other) const {
        return Point(x + other.x, y + other.y);
    }
 
    constexpr Point operator-(const Point& other) const {
        return Point(x - other.x, y - other.y);
    }
 
    constexpr Point operator/(int value) const {
        return Point(x / value, y / value);
    }
 
    constexpr Point operator/(const Point& other) const {
        return Point(x / other.x, y / other.y);
    }
 
    constexpr Point operator%(int value) const {
        return Point(x % value, y % value);
    }
 
    constexpr Point operator%(const Point& other) const {
        return Point(x % other.x, y % other.y);
    }
 
    constexpr Point operator*(int value) const {
        return Point(x * value, y * value);
    }
 
    constexpr Point operator*(const Point& other) const {
        return Point(x * other.x, y * other.y);
    }
 
    Point& operator+=(const Point& other) {
        x += other.x;
        y += other.y;
        return *this;
    }
 
    Point& operator-=(const Point& other) {
        x -= other.x;
        y -= other.y;
        return *this;
    }
 
    Point& operator/=(int value) {
        x /= value;
        y /= value;
        return *this;
    }
 
    Point& operator/=(const Point& other) {
        x /= other.x;
        y /= other.y;
        return *this;
    }
 
    Point& operator%=(int value) {
        x %= value;
        y %= value;
        return *this;
    }
 
    Point& operator%=(const Point& other) {
        x %= other.x;
        y %= other.y;
        return *this;
    }
 
    Point& operator*=(int value) {
        x *= value;
        y *= value;
        return *this;
    }
 
    Point& operator*=(const Point& other) {
        x *= other.x;
        y *= other.y;
        return *this;
    }
 
    Point GetClamped(const Rect& rect) const;
 
    Point& Clamp(const Rect& rect);
 
    Point GetWrapped(const Rect& rect) const;
 
    Point& Wrap(const Rect& rect);
};
 
}
 
constexpr bool operator==(const SDL2pp::Point&a, const SDL2pp::Point& b) {
    return a.x == b.x && a.y == b.y;
}
 
constexpr bool operator!=(const SDL2pp::Point& a, const SDL2pp::Point& b) {
    return !(a == b);
}
 
SDL2PP_EXPORT bool operator<(const SDL2pp::Point& a, const SDL2pp::Point& b);
 
SDL2PP_EXPORT std::ostream& operator<<(std::ostream& stream, const SDL2pp::Point& point);
 
namespace std {
 
template<>
struct hash<SDL2pp::Point> {
    size_t operator()(const SDL2pp::Point& p) const {
        size_t seed = std::hash<int>()(p.x);
        seed ^= std::hash<int>()(p.y) + 0x9e3779b9 + (seed<<6) + (seed>>2);
        return seed;
    }
};
 
}
 
#endif