gnuplot.h

Particle filtering implementation and application to people tracking.

#ifndef __gnuplot_h__
#define __gnuplot_h__

#include <string>
#include <vector>
#include <iostream>

namespace Gnuplot
{

using std::cout;
using std::cerr;
using std::endl;
using std::vector;
using std::string;

enum gpmode
{
	plot2d,
	plot3d
};

struct range
{
	double min, max;
};

struct gpsettings
{
	range x, y, z;
	gpmode mode;
	string gphead;

	gpsettings()
	{
		x.min = y.min = z.min = -1;
		x.max = y.max = z.max = 1;
		mode = plot2d;
		gphead = "";
	}

	void enableHeadMode
	{
		gphead = "GNUPLOT";
	}
};

struct gpobject
{
	string color;

	gpobject(string color="gray"):
		color(color)
	{}
};

struct gpbuffer
{
	vector<gpobject> data;
};

struct point
{
	point(double x=0, double y=0):
		x(x),
		y(y)
	{}
	double x, y;
};

struct line
{
	point p0, p1;

	line(double x0=0, double y0=0, double x1=0, double y1=0):
		p0(x0,y0),
		p1(x1,y1)
	{}
};

struct gppoint: point, gpobject
{
	gppoint(double x, double y, string color):
		point(x,y),
		gpobject(color)
		{}
};

struct gppointvector: gpobject
{
	vector<point> points;
};

struct gpline: line, gpobject
{
	gpline(double x0, double y0, double x1, double y1, string color):
		line(x0,y0,x1,y1),
		gpobject(color)
	{}
};

struct gplinevector
{
	vector<line> lines;
};


gpbuffer buffer;
gpsettings settings;

void gp_addpoint(double x, double y, string color)
{
	buffer.data.push_back(gppoint(x, y, color));
}

void gp_addline(double x0, double y0, double x1, double y1, string color)
{
	buffer.data.push_back(gpline(x0, y0, x1, y1, color));
}

void gp_init()
{
	buffer.data.clear();
}

void gp_display()
{
	cout << gphead << "set mouse" << endl;
	cout << gphead << "set xrange [" << settings.x.min << ":" << settings.x.max << "]" << endl;
	cout << gphead << "set yrange [" << settings.y.min << ":" << settings.y.max << "]" << endl;
	if (settings.mode == plot3d)
	{
		cout << gphead << "set zrange [" << settings.z.min << ":" << settings.z.max << "]" << endl;
		cout << gphead << "splot";
	}
	cout << gphead << "plot";
	cout << gphead << " \'-\' w p";
	cout << gphead << endl;

	cout << gphead << "0  0" << endl;
	cout << gphead << "e" << endl;

}

}

#endif