plot3d.cpp

/****************************************************************************
 *
 * $Id: plot.cpp 3530 2012-01-03 10:52:12Z fspindle $
 *
 * This file is part of the ViSP software.
 * Copyright (C) 2005 - 2013 by INRIA. All rights reserved.
 * 
 * This software is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * ("GPL") version 2 as published by the Free Software Foundation.
 * See the file LICENSE.txt at the root directory of this source
 * distribution for additional information about the GNU GPL.
 *
 * For using ViSP with software that can not be combined with the GNU
 * GPL, please contact INRIA about acquiring a ViSP Professional 
 * Edition License.
 *
 * See http://www.irisa.fr/lagadic/visp/visp.html for more information.
 * 
 * This software was developed at:
 * INRIA Rennes - Bretagne Atlantique
 * Campus Universitaire de Beaulieu
 * 35042 Rennes Cedex
 * France
 * http://www.irisa.fr/lagadic
 *
 * If you have questions regarding the use of this file, please contact
 * INRIA at visp@inria.fr
 * 
 * This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
 * WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
 *
 *
 * Description:
 * Example which describes how to use the vpPlot class
 *
 * Author:
 * Nicolas Melchior
 *
 *****************************************************************************/


#include <iostream>
#include <visp/vpConfig.h>
#include <visp/vpPlot.h>

int main ()
{
#if defined(VISP_HAVE_DISPLAY)
  //Create a window with one graphic
  vpPlot plot(1);

  // Change the default font
  //plot.setFont("-misc-fixed-bold-r-semicondensed--0-0-75-75-c-0-iso8859-10");

  //The graphic contains 2 curves
  plot.initGraph(0,2);
  
  //Set the graphic parameters
  plot.setTitle(0, "First graphic");
  plot.setUnitX(0, "time (s)");
  plot.setUnitY(0, "y");
  plot.setUnitZ(0, "z");
  plot.setLegend(0,0, "y^2+z^2=1 and y(0) = 1");
  plot.setLegend(0,1, "y^2+z^2=1 and y(0) = -1");
  plot.setColor(0,0,vpColor::red);
  plot.setColor(0,1,vpColor::green);

  double x = 0;
  double y = 1;
  double z = 0 ;
  double dx = 0.08;
  double dy = 0.04;
  double zsign = 1.0;

  unsigned long iter = 0;

  std::cout << "Hit CTRL-C to exit...";
  while(1) {
    if (iter < 300) {
      //y*y+z*z = 1
      if (fabs(y) < 1.0)
        z = sqrt(1.0-y*y);
      else z = 0;

      //Add points to the graphic
      plot.plot(0,0, x, y,z*zsign);
      plot.plot(0,1, x, -y,-z*zsign);
      
      x += dx;
      
      if (fabs(y) >= 1.0 ) 
        dy = -dy;
      y += dy;
      if (fabs(y) >= 1.0 ) 
        zsign = -zsign;
    }
    else {
      // Tip: to allows modifying the point of view with the mouse we
      // plot always the last point
      plot.plot(0,0, x, y,z*zsign);
      plot.plot(0,1, x, -y,-z*zsign);
    }
    iter ++;
  }
  
  return 0;
#else
  std::cout << "Plot functionalities are not avalaible since no display is available." << std::endl;
#endif
}