/usr/share/doc/libplplot12/examples/java/x02.java is in libplplot-java 5.10.0-0ubuntu5.
This file is owned by root:root, with mode 0o644.
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// $Id: x02.java 12288 2013-01-30 04:40:35Z airwin $
//--------------------------------------------------------------------------
//--------------------------------------------------------------------------
// Copyright (C) 2001 Geoffrey Furnish
// Copyright (C) 2002 Alan W. Irwin
// Copyright (C) 2004,2005 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 2 in Java.
//--------------------------------------------------------------------------
package plplot.examples;
import plplot.core.*;
import static plplot.core.plplotjavacConstants.*;
import java.text.*;
class x02 {
private PLStream pls;
public static void main( String[] args )
{
new x02( args );
}
x02( String[] args )
{
pls = new PLStream();
// Parse and process command line arguments.
pls.parseopts( args, PL_PARSE_FULL | PL_PARSE_NOPROGRAM );
// Initialize plplot.
pls.init();
demo1();
demo2();
pls.end();
}
void demo1()
{
pls.bop();
// Divide screen into 16 regions.
pls.ssub( 4, 4 );
draw_windows( 16, 0 );
pls.eop();
}
void demo2()
{
// Set up cmap0
// Use 100 custom colors in addition to base 16
int[] r = new int[116];
int[] g = new int[116];
int[] b = new int[116];
int[] r1i = new int[1];
int[] g1i = new int[1];
int[] b1i = new int[1];
// Min and max lightness values
double lmin = 0.15, lmax = 0.85;
int i;
pls.bop();
// Divide screen into 100 regions.
pls.ssub( 10, 10 );
for ( i = 0; i <= 99; i++ )
{
double h, l, s;
double[] r1 = new double[1];
double[] g1 = new double[1];
double[] b1 = new double[1];
// Bounds on HLS, from plhlsrgb() commentary --
// hue [0., 360.] degrees
// lightness [0., 1.] magnitude
// saturation [0., 1.] magnitude
//
// Vary hue uniformly from left to right
h = ( 360. / 10. ) * ( i % 10 );
// Vary lightness uniformly from top to bottom, between min & max
l = lmin + ( lmax - lmin ) * ( i / 10 ) / 9.;
// Use max saturation
s = 1.0;
pls.hlsrgb( h, l, s, r1, g1, b1 );
r[i + 16] = (int) ( r1[0] * 255.001 );
g[i + 16] = (int) ( g1[0] * 255.001 );
b[i + 16] = (int) ( b1[0] * 255.001 );
}
// Load default cmap0 colors into our custom set
for ( i = 0; i <= 15; i++ )
{
pls.gcol0( i, r1i, g1i, b1i );
r[i] = r1i[0];
g[i] = g1i[0];
b[i] = b1i[0];
}
// Now set cmap0 all at once (faster, since fewer driver calls)
pls.scmap0( r, g, b );
draw_windows( 100, 16 );
pls.eop();
}
// --------------------------------------------------------------------
// draw_windows
//
// Draws a set of numbered boxes with colors according to cmap0 entry.
// --------------------------------------------------------------------
void draw_windows( int nw, int cmap0_offset )
{
int i, j;
double vmin, vmax;
NumberFormat nf = NumberFormat.getNumberInstance();
pls.schr( 0.0, 3.5 );
pls.font( 4 );
for ( i = 0; i < nw; i++ )
{
pls.col0( i + cmap0_offset );
String text = nf.format( i );
pls.adv( 0 );
vmin = 0.1;
vmax = 0.9;
for ( j = 0; j <= 2; j++ )
{
pls.width( j + 1 );
pls.vpor( vmin, vmax, vmin, vmax );
pls.wind( 0.0, 1.0, 0.0, 1.0 );
pls.box( "bc", 0.0, 0, "bc", 0.0, 0 );
vmin = vmin + 0.1;
vmax = vmax - 0.1;
}
pls.width( 1 );
pls.ptex( 0.5, 0.5, 1.0, 0.0, 0.5, text );
}
}
}
//--------------------------------------------------------------------------
// End of x02.java
//--------------------------------------------------------------------------
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