//===========================================================================
// Copyright (C) 1998, 2000-2007, 2010, 2011, 2012 SINTEF ICT, Applied
// Mathematics, Norway.
//
// This file is part of GoTools
//
// This program is free software; you can redistribute it and/or          
// modify it under the terms of the GNU General Public License            
// as published by the Free Software Foundation version 2 of the License. 
//
// This program is distributed in the hope that it will be useful,        
// but WITHOUT ANY WARRANTY; without even the implied warranty of         
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the          
// GNU General Public License for more details.                           
//
// You should have received a copy of the GNU General Public License      
// along with this program; if not, see <http://www.gnu.org/licenses>
//
// Contact information: E-mail: tor.dokken@sintef.no                      
// SINTEF ICT, Department of Applied Mathematics,                         
// P.O. Box 124 Blindern,                                                 
// 0314 Oslo, Norway.                                                     
//
// Other licenses are also available for this software, notably licenses
// for:
// - Building commercial software.                                        
// - Building software whose source code you wish to keep private.        
//===========================================================================

#include <iostream>
#include <fstream>
#include <string>
#include <stdexcept>

#include "sisl.h"
#include "GoReadWrite.h"

using namespace std;

namespace {
    string OUT_FILE_SURFACE = "example11_surf.g2";

    string DESCRIPTION = 
    //==========================================================
    "This program generates a cylindrical surface and saves it \n"
    "to the file '" + OUT_FILE_SURFACE + "'.\n\n";
    //==========================================================

    double bottom_pos[] = {10, 1, -1};
    double bottom_axis[] = {5, 0, 0};
    double ellipse_ratio = 1.2;
    double axis_dir[] = {0, 0, 1};
    double height = 35;

}; // end anonymous namespace 

//===========================================================================
int main(int avnum, char** vararg)
//===========================================================================
{
    cout << '\n' << vararg[0] << ":\n" << DESCRIPTION << endl;
    cout << "To proceed, press enter, or ^C to quit." << endl;
    getchar();

    try {
	ofstream os_surf(OUT_FILE_SURFACE.c_str());
	if (!os_surf) {
	    throw runtime_error("Unable to open output file.");
	}

	SISLSurf* result_surf = 0;
	int jstat = 0;
	
	// generating the surface
	s1021(bottom_pos,      // bottom position of the cylinder
	      bottom_axis,     // the axis of the base of the cylinder
	      ellipse_ratio,   // the ellipticalness of the base of the cylinder
	      axis_dir,        // direction of the main axis
	      height,          // height of the cylinder
	      &result_surf,    // resulting surface
	      &jstat);         // status variable
	if (jstat < 0) {
	    throw runtime_error("Error occured inside call to SISL routine s1024.");
	} else if (jstat > 0) {
	    cerr << "WARNING: warning occured inside call to SISL routine s1024. \n" 
		 << endl;
	}

	// writing surface to file
	writeGoSurface(result_surf, os_surf);

	// cleaning up
	freeSurf(result_surf);
	os_surf.close();

    } catch (exception& e) {
	cerr << "Exception thrown: " << e.what() << endl;
	return 0;
    }

    return 1;
};

