rt300@0: /*
rt300@0:  *  2dvector.h
rt300@0:  *  simplespring
rt300@0:  *
rt300@0:  *  Created by Robert Tubb on 01/06/2011.
rt300@0:  *  Copyright 2011 __MyCompanyName__. All rights reserved.
rt300@0:  *
rt300@0:  */
rt300@0: #ifndef _2DVECTORH
rt300@0: #define _2DVECTORH
rt300@0: #include <iostream>
rt300@0: 
rt300@0: class TwoVector{
rt300@0: public:
rt300@0: 	double x, y;
rt300@0: 	TwoVector();
rt300@0: 	TwoVector(double ax, double ay);
rt300@0: 
rt300@0: // public methods	
rt300@0: 	double norm();
rt300@0: 	void setCoord(double ax, double ay);
rt300@0: 	TwoVector minus(TwoVector otherPoint);
rt300@0:     TwoVector operator-(TwoVector otherPoint);
rt300@0:     TwoVector operator+(TwoVector otherPoint);
rt300@0:     
rt300@0:     TwoVector operator*(TwoVector otherPoint);
rt300@0:     TwoVector operator*(const double& scalar); // scalar is right operand
rt300@0: 
rt300@0:     //TwoVector operator=(TwoVector otherPoint);
rt300@0:     
rt300@0:     double distanceTo(TwoVector otherPoint);
rt300@0: 
rt300@0: };
rt300@0: using namespace std;
rt300@0: // output text formatting: (x,y) in super precise output 
rt300@0: inline ostream& operator<<(ostream& ostr, const TwoVector& tvec){
rt300@0:     ostr.setf(ios_base::fixed,ios_base::floatfield);
rt300@0:     ostr.precision(1);
rt300@0:     
rt300@0:     ostr << "(" << tvec.x << "," << tvec.y << ")";
rt300@0:     return ostr;
rt300@0: }
rt300@0: inline istream& operator>>(istream& istr, TwoVector& tvec){
rt300@0:         // um
rt300@0: 
rt300@0:     char l_paren , comma, r_paren;
rt300@0:     
rt300@0:     
rt300@0:     if(istr.bad()){
rt300@0:         cout << "BAD INPUT";
rt300@0:         return istr;
rt300@0:     }
rt300@0:     
rt300@0:     istr.setf(ios_base::fixed,ios_base::floatfield);
rt300@0:     istr.precision(1);
rt300@0:     
rt300@0:     istr >> l_paren >> tvec.x >> comma >> tvec.y >> r_paren;
rt300@0:     if(l_paren != '('){
rt300@0:         cout << "BAD INPUT (";
rt300@0:         return istr;
rt300@0:     }
rt300@0: 
rt300@0:     if(comma != ','){
rt300@0:         cout << "BAD INPUT ,";
rt300@0:         return istr;
rt300@0:     }
rt300@0: 
rt300@0:     if(r_paren != ')'){
rt300@0:         cout << "BAD INPUT )";
rt300@0:         return istr;
rt300@0:     }
rt300@0:     return istr;
rt300@0: }
rt300@0: #endif // #ifndef _2DVECTORH