Line.h

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#ifndef _JON_LINE_H_
#define _JON_LINE_H_

#include <iostream>
#include <vector>
#include <set>
#include "Path.h"
#include "Vector.h"

namespace geom {

/*
 * Saves the line as a point and vector pair. This makes it possible to store vertical lines
 * and simplifies some operation such as finding the distance to the line from a point
 */
class Line: public Path {
        private:
                Point p;
                Vector d;
        public:
                Line();
    Line(Point p, float theta);
    Line(Point p1, Point p2);
                Line(Point p1, Point p2, bool setLen);
                Vector getDirection() const;
                Point getPoint() const;
                Point eval(float t) const;
                Point intersect(const Line& o) const;
                Point intersect(const Line& o, float& t, float& s) const;
                float distFrom(Point p) const;
                bool sameAs(const Line& o, double e = EPSILON) const;
                bool operator<(const Line& o) const;
                void translate(const Point& trans);
                std::ostream& output(std::ostream& out) const;

//              Drawable* getCopy() const;

                static Line getBestFit(const std::set<Point>& pts);
                static Line getBestFit(const std::vector<Point>& pts);
                static Line getBestFit(const double* xs, const double* ys, uint size);

                void draw() const;

                static bool test(std::ostream& out);
};

std::ostream& operator<<(std::ostream& out, const Line& line);

}

#endif /*_JON_LINE_H_*/