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//---------------------------------------------------------------------------//
// $Id: x13.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 13 in C++.
//---------------------------------------------------------------------------//
#include "plstream.h"
#include <iostream>
#include <cmath>
#ifdef USE_NAMESPACE
using namespace std;
#endif
static char* text[] = {"Maurice", "Geoffrey", "Alan", "Rafael", "Vince"};
static int per[] = {10, 32, 12, 30, 16};
class x13 {
public:
x13(int, char **);
private:
// Class data
plstream *pls;
};
x13::x13( int argc, char ** argv ) {
int i, j, dthet, theta0, theta1, theta;
PLFLT just, dx, dy;
PLFLT *x = new PLFLT[ 500 ];
PLFLT *y = new PLFLT[ 500 ];
// plplot initialization
pls = new plstream();
// Parse and process command line arguments.
pls->ParseOpts( &argc, argv, PL_PARSE_FULL );
// Initialize PLplot.
pls->init();
pls->env(0., 10., 0., 10., 1, -2);
pls->col0(2);
// n.b. all theta quantities scaled by 2*pi/500 to be integers to avoid
// floating point logic problems.
theta0 = 0;
dthet = 1;
for (i = 0; i <= 4; i++) {
j = 0;
x[j] = 5.;
y[j++] = 5.;
// n.b. the theta quantities multiplied by 2*pi/500 afterward so
// in fact per is interpreted as a percentage.
theta1 = theta0 + 5 * per[i];
if (i == 4)
theta1 = 500;
for (theta = theta0; theta <= theta1; theta += dthet) {
x[j] = 5 + 3 * cos((2.*M_PI/500.)*theta);
y[j++] = 5 + 3 * sin((2.*M_PI/500.)*theta);
}
pls->col0(i + 1);
pls->psty((i + 3) % 8 + 1);
pls->fill(j,x, y);
pls->col0(1);
pls->line(j, x, y);
just = (2.*M_PI/500.)*(theta0 + theta1)/2.;
dx = .25 * cos(just);
dy = .25 * sin(just);
if ((theta0 + theta1) < 250 || (theta0 + theta1) > 750)
just = 0.;
else
just = 1.;
pls->ptex((x[j / 2] + dx), (y[j / 2] + dy), 1.0, 0.0, just, text[i]);
theta0 = theta - dthet;
}
pls->font(2);
pls->schr(0., 1.3);
pls->ptex(5.0, 9.0, 1.0, 0.0, 0.5, "Percentage of Sales");
// pls->end();
delete[] x;
delete[] y;
delete pls;
}
int main( int argc, char ** argv ) {
x13 *x = new x13( argc, argv );
delete x;
}
//---------------------------------------------------------------------------//
// End of x13.cc
//---------------------------------------------------------------------------//
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