diff 2dvector.h @ 0:a223551fdc1f

First commit - copy from tweakathlon.

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/2dvector.h	Fri Oct 10 11:46:42 2014 +0100
@@ -0,0 +1,74 @@
+/*
+ *  2dvector.h
+ *  simplespring
+ *
+ *  Created by Robert Tubb on 01/06/2011.
+ *  Copyright 2011 __MyCompanyName__. All rights reserved.
+ *
+ */
+#ifndef _2DVECTORH
+#define _2DVECTORH
+#include <iostream>
+
+class TwoVector{
+public:
+	double x, y;
+	TwoVector();
+	TwoVector(double ax, double ay);
+
+// public methods	
+	double norm();
+	void setCoord(double ax, double ay);
+	TwoVector minus(TwoVector otherPoint);
+    TwoVector operator-(TwoVector otherPoint);
+    TwoVector operator+(TwoVector otherPoint);
+    
+    TwoVector operator*(TwoVector otherPoint);
+    TwoVector operator*(const double& scalar); // scalar is right operand
+
+    //TwoVector operator=(TwoVector otherPoint);
+    
+    double distanceTo(TwoVector otherPoint);
+
+};
+using namespace std;
+// output text formatting: (x,y) in super precise output 
+inline ostream& operator<<(ostream& ostr, const TwoVector& tvec){
+    ostr.setf(ios_base::fixed,ios_base::floatfield);
+    ostr.precision(1);
+    
+    ostr << "(" << tvec.x << "," << tvec.y << ")";
+    return ostr;
+}
+inline istream& operator>>(istream& istr, TwoVector& tvec){
+        // um
+
+    char l_paren , comma, r_paren;
+    
+    
+    if(istr.bad()){
+        cout << "BAD INPUT";
+        return istr;
+    }
+    
+    istr.setf(ios_base::fixed,ios_base::floatfield);
+    istr.precision(1);
+    
+    istr >> l_paren >> tvec.x >> comma >> tvec.y >> r_paren;
+    if(l_paren != '('){
+        cout << "BAD INPUT (";
+        return istr;
+    }
+
+    if(comma != ','){
+        cout << "BAD INPUT ,";
+        return istr;
+    }
+
+    if(r_paren != ')'){
+        cout << "BAD INPUT )";
+        return istr;
+    }
+    return istr;
+}
+#endif // #ifndef _2DVECTORH
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