rt300@0: /*
rt300@0:  *  2dvector.cpp
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: 
rt300@0: #include "2dvector.h"
rt300@0: #include <iostream>
rt300@0: 
rt300@0: TwoVector::TwoVector(){
rt300@0: 	x = 0.0;
rt300@0: 	y = 0.0;
rt300@0: 	//cout << "def constr set vector to zeros" << endl;
rt300@0: }
rt300@0: 
rt300@0: TwoVector::TwoVector(double ax, double ay){
rt300@0: 	x = ax;
rt300@0: 	y = ay;
rt300@0: 	//cout << "spec constr set vector to " << ax << "," << ay << endl;
rt300@0: }
rt300@0: 
rt300@0: double TwoVector::norm(){
rt300@0: 	double norm;
rt300@0: 	norm = sqrt(x * x + y * y);
rt300@0: 	return norm;
rt300@0: 	
rt300@0: }
rt300@0: 
rt300@0: void TwoVector::setCoord(double ax, double ay){
rt300@0: 	x = ax;
rt300@0: 	y = ay;
rt300@0: 
rt300@0: }
rt300@0: 
rt300@0: TwoVector TwoVector::minus(TwoVector otherPoint){
rt300@0:     TwoVector diff;
rt300@0:     diff.setCoord(x - otherPoint.x, y - otherPoint.y);
rt300@0:     return diff;
rt300@0: }
rt300@0: 
rt300@0: TwoVector TwoVector::operator-(TwoVector otherPoint){
rt300@0:     TwoVector diff;
rt300@0:     diff.setCoord(x - otherPoint.x, y - otherPoint.y);
rt300@0:     return diff;
rt300@0: }
rt300@0: 
rt300@0: TwoVector TwoVector::operator*(TwoVector otherPoint){ // if multiplying two vectors - elementwise
rt300@0:     TwoVector diff;
rt300@0:     diff.setCoord(x * otherPoint.x, y * otherPoint.y);
rt300@0:     return diff;
rt300@0: }
rt300@0: 
rt300@0: TwoVector TwoVector::operator*(double scalar){ // if multiplying two vectors - elementwise
rt300@0:     TwoVector diff;
rt300@0:     diff.setCoord(x * scalar, y * scalar);
rt300@0:     return diff;
rt300@0: }
rt300@0: 
rt300@0: TwoVector TwoVector::operator+(TwoVector otherPoint){
rt300@0:     TwoVector diff;
rt300@0:     diff.setCoord(otherPoint.x + x, otherPoint.y + y);
rt300@0:     return diff;
rt300@0: }
rt300@0: 
rt300@0: TwoVector TwoVector::unitDir(){
rt300@0:     TwoVector unit;
rt300@0:     double theNorm;
rt300@0:     theNorm = this->norm();
rt300@0:     
rt300@0:     unit.setCoord(x/theNorm, y/theNorm);
rt300@0:     return unit;
rt300@0: }
rt300@0: 
rt300@0: double TwoVector::distanceTo(TwoVector otherPoint){
rt300@0:     TwoVector diff;
rt300@0:     diff.setCoord(otherPoint.x - x, otherPoint.y - y);
rt300@0:     return diff.norm();
rt300@0: }
rt300@0: