getter x() and y()

6-cia/src/geo2d-vz.cc

@@ -74,9 +74,10 @@ class Point
   double distance(const Point& other) const; 
                  //|                  |--- my own variables cannot be changed
                  //other cannot be changed
-  
-  static double distance(Point p,Point q);
-// private: Suende
+//getter
+  double x() const;
+  double y() const;
+ private:
   void svg();  //draw the point
   double xc;   //x-coordinate
   double yc;   //y-coordinate
@@ -123,11 +124,6 @@ void Point::svg()
  SVG::dot(xc,yc); //with default radius
 }
 
-double Point::distance(Point p,Point q) //is not a member of Point
-{
- return std::hypot(q.xc-p.xc,q.yc-p.yc);
-                //   |private
-}
 
 double Point::distance(const Point& other) const    //is a member of Point
                          // |----------c++ reference
@@ -144,6 +140,9 @@ double Point::distance(const Point& other) const    //is a member of Point
                    yc- other.yc);  
 } 
 
+inline double Point::x()const{return xc;}
+inline double Point::y()const{return yc;}
+
 //----------------------------------------------- Line
 //                                      implementation
 Line::Line(const Point& p,const Point& q)
@@ -159,8 +158,8 @@ Line::~Line()
 
 void Line::svg()
 {
- SVG::line(pp.xc,pp.yc,  //x0,y0
-           qq.xc,qq.yc); //x1 y1
+ SVG::line(pp.x(),pp.y(),   //x0,y0
+           qq.x(),qq.y()); //x1 y1
 }
 
 int main(int argc,char**args)