NAME

Circle

SYNOPSIS

use Carp;
use GD;
use WWPlot;
use Fun;

DESCRIPTION

This module defines a circle which can be inserted as a stamp in a graph (WWPlot) object.

Command:

$circle_object = new Circle( $center_pos_x, $center_pos_y, $radius, $border_color, $fill_color);

Examples:

Here is the code used to define the subroutines open_circle and closed_circle in PGgraphmacros.pl

sub open_circle {
    my ($cx,$cy,$color) = @_;
    new Circle ($cx, $cy, 4,$color,'nearwhite');
}

sub closed_circle {
    my ($cx,$cy, $color) = @_;
    $color = 'black' unless defined $color;
    new Circle ($cx, $cy, 4,$color, $color);
}

$circle_object2 = closed_circle( $x_position, $y_position, $color );

@circle_objects = $graph -> stamps($circle_object2);
# puts a filled dot at ($x_position, $y_position) on the graph -- using real world coordinates.