GPXSee/src/graph.h

#ifndef GRAPH_H
#define GRAPH_H

#include <QVector>
#include <cmath>

enum GraphType {Distance, Time};

class GraphPoint
{
public:
	GraphPoint(qreal s = NAN, qreal t = NAN, qreal y = NAN)
	  : _s(s), _t(t), _y(y) {}

	qreal s() const {return _s;}
	qreal t() const {return _t;}
	qreal y() const {return _y;}
	qreal x(GraphType type) const {return (type == Distance) ? _s : _t;}

	void setS(qreal s) {_s = s;}
	void setT(qreal t) {_t = t;}
	void setY(qreal y) {_y = y;}

private:
	qreal _s;
	qreal _t;
	qreal _y;
};

class Graph : public QVector<GraphPoint>
{
public:
	Graph() : QVector<GraphPoint>() {_time = true;}
	void append(const GraphPoint &p)
	{
		if (std::isnan(p.t()))
			_time = false;
		QVector<GraphPoint>::append(p);
	}

	bool hasTime() const {return _time;}

private:
	bool _time;
};

Q_DECLARE_TYPEINFO(GraphPoint, Q_PRIMITIVE_TYPE);

#endif // GRAPH_H