Chart::Clicker::Renderer::Pie

NAME

Chart::Clicker::Renderer::Pie - Pie renderer

VERSION

version 2.90

SYNOPSIS

  my $pier = Chart::Clicker::Renderer::Pie->new;
  # Optionally set the stroke width
  $pier->brush->width(2);

DESCRIPTION

Chart::Clicker::Renderer::Pie renders a dataset as slices of a pie. The keys of like-named Series are totaled and keys are ignored. So for a dataset like:

  my $series = Chart::Clicker::Data::Series->new(
      keys    => [ 1, 2, 3 ],
      values  => [ 1, 2, 3],
  );
  my $series2 = Chart::Clicker::Data::Series->new(
      keys    => [ 1, 2, 3],
      values  => [ 1, 1, 1 ],
  );

The keys are discarded and a pie chart will be drawn with $series' slice at 66% (1 + 2 + 3 = 6) and $series2's at 33% (1 + 1 + 1 = 3).

ATTRIBUTES

border_color

Set/Get the color to use for the border.

brush

Set/Get a brush to be used for the pie's border.

gradient_color

If supplied, specifies a color to mix with each slice's color for use as a radial gradient. The best results are usually gotten from mixing with a white or black and manipulating the alpha, like so:

  $ren->gradient_color(
    Graphics::Color::RGB->new(red => 1, green => 1, blue => 1, alpha => .3)
  );

The above will cause each generated color to fade toward a lighter version of itself. Adjust the alpha to increase or decrease the effect.

brush

Set/Get whether or not the gradient is to be reversed.

starting_angle

Set/Get a starting angle for the gradient.

AUTHOR

Cory G Watson <[email protected]>

COPYRIGHT AND LICENSE

This software is copyright (c) 2016 by Cory G Watson. This is free software; you can redistribute it and/or modify it under the same terms as the Perl 5 programming language system itself.