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//--------------------------------------------------------------------------
// Copyright (C) 2001 Geoffrey Furnish
// Copyright (C) 2001, 2002 Alan W. Irwin
// Copyright (C) 2004 Andrew Ross
//
// 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
//--------------------------------------------------------------------------
//--------------------------------------------------------------------------
// Implementation of PLplot example 13 in Java.
//--------------------------------------------------------------------------
package plplot.examples;
import plplot.core.*;
import static plplot.core.plplotjavacConstants.*;
import java.lang.Math;
class x13 {
static String[] text = { "Maurice", "Geoffrey", "Alan", "Rafael", "Vince" };
static int per[] = { 10, 32, 12, 30, 16 };
public static void main( String[] args )
{
new x13( args );
}
public x13( String[] args )
{
PLStream pls = new PLStream();
int i, j, dthet, theta0, theta1, theta;
double just, dx, dy;
double[] x = new double[ 500 ];
double[] y = new double[ 500 ];
pls.parseopts( args, PL_PARSE_FULL | PL_PARSE_NOPROGRAM );
pls.init();
pls.adv( 0 );
// Ensure window has aspect ratio of one so circle is
// plotted as a circle.
pls.vasp( 1.0 );
pls.wind( 0., 10., 0., 10. );
//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 * Math.cos( ( 2. * Math.PI / 500. ) * theta );
y[j++] = 5 + 3 * Math.sin( ( 2. * Math.PI / 500. ) * theta );
}
pls.col0( i + 1 );
pls.psty( ( i + 3 ) % 8 + 1 );
// Make array of correct size to copy to.
double [] xsized = new double[j];
double [] ysized = new double[j];
System.arraycopy( x, 0, xsized, 0, j );
System.arraycopy( y, 0, ysized, 0, j );
pls.fill( xsized, ysized );
pls.col0( 1 );
pls.line( xsized, ysized );
just = ( 2. * Math.PI / 500. ) * ( theta0 + theta1 ) / 2.;
dx = .25 * Math.cos( just );
dy = .25 * Math.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();
}
}
//--------------------------------------------------------------------------
// End of x13.java
//--------------------------------------------------------------------------
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