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// Drawing mode setting and getting example.
//
// Copyright (C) 2011 Hezekiah M. Carty
//
// 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; either version 2 of the License, or
// (at your option) any later version.
//
// 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
//
//
#include "plcdemos.h"
// Drawing modes to demonstrate
#define NUM_MODES 3
PLINT drawing_modes[NUM_MODES] = {
PL_DRAWMODE_DEFAULT,
PL_DRAWMODE_REPLACE,
PL_DRAWMODE_XOR
};
PLCHAR_VECTOR drawing_mode_names[NUM_MODES] = {
"Default drawing mode",
"Replace destination with source",
"XOR drawing"
};
void initialize_colors( void );
void draw_page( PLINT mode, PLCHAR_VECTOR title );
//--------------------------------------------------------------------------
// main
//--------------------------------------------------------------------------
int main( int argc, char *argv[] )
{
PLINT mode;
PLINT i;
// PLplot initialization
// Parse and process command line arguments
plparseopts( &argc, argv, PL_PARSE_FULL );
// Initialize PLplot
plinit();
// Check for drawing mode support
mode = plgdrawmode();
if ( mode == PL_DRAWMODE_UNKNOWN )
{
printf( "WARNING: This driver does not support drawing mode getting/setting" );
}
else
{
// Setup colors
initialize_colors();
// Draw one page per drawing mode
for ( i = 0; i < NUM_MODES; i++ )
{
draw_page( drawing_modes[i], drawing_mode_names[i] );
}
}
// Clean up
plend();
exit( 0 );
}
void initialize_colors( void )
{
plscol0( 0, 255, 255, 255 );
plscol0( 1, 0, 0, 0 );
plscol0( 2, 255, 0, 0 );
plscol0a( 3, 0, 0, 255, 0.3 );
}
void draw_page( PLINT mode, PLCHAR_VECTOR title )
{
PLFLT xs[3], ys[3];
PLFLT over_x, over_y, over_r;
// A triangle for the background
xs[0] = 0.0;
xs[1] = 1.0;
xs[2] = 0.0;
ys[0] = 0.0;
ys[1] = 1.0;
ys[2] = 1.0;
// A circle for the foreground
over_x = 0.5;
over_y = 0.5;
over_r = 0.4;
plcol0( 1 );
// Setup a plot window
plenv( 0.0, 1.0, 0.0, 1.0, 1, 0 );
// Show which mode we're using
pllab( "", "", title );
// Draw a background triangle using the default drawing mode
plcol0( 2 );
plsdrawmode( PL_DRAWMODE_DEFAULT );
plfill( 3, xs, ys );
// Draw a circle in the given drawing mode
plcol0( 3 );
plsdrawmode( mode );
plarc( over_x, over_y, over_r, over_r, 0.0, 360.0, 0.0, 1 );
}
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