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//---------------------------------------------------------------------------//
// $Id: x19.cc,v 1.5 2004/03/03 17:41:16 andrewross Exp $
//---------------------------------------------------------------------------//
//
//---------------------------------------------------------------------------//
// Copyright (C) 2004 Andrew Ross <andrewr@coriolis.greenend.org.uk>
// Copyright (C) 2004 Alan W. Irwin
//
// This file is part of PLplot.
//
// PLplot is free software; you can redistribute it and/or modify
// it under the terms of the GNU Library General Public License as published by
// the Free Software Foundation; version 2 of the License.
//
// PLplot 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 Library General Public License for more details.
//
// You should have received a copy of the GNU Library General Public License
// along with PLplot; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
//---------------------------------------------------------------------------//
//
//---------------------------------------------------------------------------//
// Implementation of PLplot example 19 in C++.
//---------------------------------------------------------------------------//
#include "plstream.h"
#include <iostream>
#include <cmath>
#ifdef USE_NAMESPACE
using namespace std;
#endif
class x19 {
public:
x19(int, char **);
private:
// Class data
plstream *pls;
};
//--------------------------------------------------------------------------
// mapform19
//
// Defines specific coordinate transformation for example 19.
// Not to be confused with mapform in src/plmap.c.
// x[], y[] are the coordinates to be plotted.
//--------------------------------------------------------------------------
void
mapform19(PLINT n, PLFLT *x, PLFLT *y)
{
int i;
double xp, yp, radius;
for (i = 0; i < n; i++) {
radius = 90.0 - y[i];
xp = radius * cos(x[i] * M_PI / 180.0);
yp = radius * sin(x[i] * M_PI / 180.0);
x[i] = xp;
y[i] = yp;
}
}
x19::x19( int argc, char ** argv ) {
PLFLT minx, maxx, miny, maxy;
int c;
// plplot initialization
pls = new plstream();
// Parse and process command line arguments.
pls->ParseOpts( &argc, argv, PL_PARSE_FULL );
// Longitude (x) and latitude (y)
miny = -70;
maxy = 80;
// Initialize PLplot.
pls->init();
// Cartesian plots
// Most of world
minx = 190;
maxx = 190+360;
pls->col0(1);
pls->env(minx, maxx, miny, maxy, 1, -1);
pls->map(NULL, "usaglobe", minx, maxx, miny, maxy);
// The Americas
minx = 190;
maxx = 340;
pls->col0(1);
pls->env(minx, maxx, miny, maxy, 1, -1);
pls->map(NULL, "usaglobe", minx, maxx, miny, maxy);
// Polar, Northern hemisphere
minx = 0;
maxx = 360;
pls->env(-75., 75., -75., 75., 1, -1);
pls->map(mapform19,"globe", minx, maxx, miny, maxy);
pls->lsty(2);
pls->meridians(mapform19,10.0, 10.0, 0.0, 360.0, -10.0, 80.0);
delete pls;
}
int main( int argc, char ** argv ) {
x19 *x = new x19( argc, argv );
delete x;
}
//---------------------------------------------------------------------------//
// End of x19.cc
//---------------------------------------------------------------------------//
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