#pragma once class Rect; class Point { public: Point() { } Point(int x, int y) : m_x(x) , m_y(y) { } int x() const { return m_x; } int y() const { return m_y; } void setX(int x) { m_x = x; } void setY(int y) { m_y = y; } void moveBy(int dx, int dy) { m_x += dx; m_y += dy; } void moveBy(const Point& delta) { moveBy(delta.x(), delta.y()); } void constrain(const Rect&); bool operator==(const Point& other) const { return m_x == other.m_x && m_y == other.m_y; } bool operator!=(const Point& other) const { return !(*this == other); } private: int m_x { 0 }; int m_y { 0 }; };