Listing 4

// file: point.cpp
#include "soapH.h"
Point::Point() : x(0.0), y(0.0) {}
Point::Point(float x, float y) : x(x), y(y) {}
// the radius of a point is always 0.0
float Point::radius() const
{ return 0.0; }
// compute the distance to another point
float Point::distance(const Point& p) const
{ return sqrt((x-p.x)*(x-p.x)+(y-p.y)*(y-p.y)); }