// ********************************************************** // File: Point.h // Description: Definition of class Point // // Author: Carlos Moreno // ********************************************************** #ifndef __POINT_H__ #define __POINT_H__ class Segment; class Triangle; class Polygon; class Point { public: // Constructor explicit Point (double _x = 0, double _y = 0) : x(_x), y(_y) {} // Geometric and miscelaneous operations void draw (int radius = 0) const; // Platform dependent - implemented for Win32 bool is_on (const Segment &) const; bool is_inside (const Triangle &) const; bool is_inside (const Polygon &) const; // Arithmetic operators Point operator+ (const Point & p) const; Point operator- (const Point & p) const; Point operator* (double r) const; double operator* (const Point & p) const; // Scalar product Point operator/ (double r) const; // Comparison operators bool operator== (const Point & p) const; bool operator!= (const Point & p) const; bool operator< (const Point & p) const; bool operator> (const Point & p) const; // get utility functions double get_x () const { return x; } double get_y () const { return y; } private: double x,y; }; inline Point operator* (double x, const Point & p) { return p*x; // Invoke member-function } const Point origin (0,0); #endif