/* -*- C++ -*-

 *

 * This file is a part of LEMON, a generic C++ optimization library

 *

 * Copyright (C) 2003-2008

 * Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport

 * (Egervary Research Group on Combinatorial Optimization, EGRES).

 *

 * Permission to use, modify and distribute this software is granted

 * provided that this copyright notice appears in all copies. For

 * precise terms see the accompanying LICENSE file.

 *

 * This software is provided "AS IS" with no warranty of any kind,

 * express or implied, and with no claim as to its suitability for any

 * purpose.

 *

 */

/// \ingroup demos

/// \file

/// \brief Demo of the EPS grawing class \ref lemon::EpsDrawer "EpsDrawer".

///

/// This demo program shows examples how to use the class \ref

/// lemon::EpsDrawer "EpsDrawer". It takes no input but simply creates

/// a file <tt>eps_demo.eps</tt> demonstrating the capability of \ref

/// lemon::EpsDrawer "EpsDrawer".

///

/// \include eps_demo.cc

#include <cmath>

#include <lemon/eps.h>

using namespace lemon;

void kosar(EpsDrawer &ed)

{

  double d,r;

  r = sqrt(2);

  ed.save();

  ed.translate(256,256).scale(256,256);

  ed.lineWidth(1/256);

  ed.collect();

  ed.moveTo(0,1);

  for(d=0;d<M_PI*2*5;d+=.1)

    {

      ed.lineTo(sin(d*3),cos(d*5));

    }

  ed.stroke();

  ed.restore();

}

void fonts(EpsDrawer &ed)

{

  ed.save().centerMode(true);

  ed.font("Helvetica").fontSize(90);

  ed.moveTo(256,512/3*2+50) << "Helvetica";

  ed.font("Courier");

  ed.moveTo(256,512/3+50) << "Courier" ;

  ed.font("Times-Roman");

  ed.moveTo(256,50) << "Times-Roman";

  ed.centerMode(false).restore();

}

int main()

{

  EpsDrawer ed("eps_demo.eps",512,512);

  ed.scale(1,1);

  ed.color(0,0,0).collect();

  ed.moveTo(0,0).lineTo(0,512).lineTo(512,512).lineTo(512,0).closePath().fill();

  ed.lineWidth(4);

  for(double r=0;r<=256;r+=2)

    {

      ed.color(r/256.0,0,1-r/256.0).circle(256,256,r);

    }

  ed.save();

  ed.color(0,0,0);

  ed.translate(256,256);

  for(int i=0;i<18;i++)

    {

      ed.rotate(20);

      for(double r=0;r<=256;r+=20)

	ed.fontSize(r/10+1).rotate(2).moveTo(0,r) << r;

      ed.rotate(-26);

    }

  ed.restore();

  fonts(ed.color(.7,.7,.7));

  ed.color(0,1,0);

  ed.node(ed.CIRCLE,128,333,25);

  ed.node(ed.SQUARE,256,333,25);

  ed.node(ed.DIAMOND,128+256,333,25);

  kosar(ed);

}