Summary

Bio::Graphics::Glyph::christmas_arrow - The "christmas arrow" glyph

Package variables

Included modules

Inherit

Bio::Graphics::Glyph::generic

Synopsis

  See Bio::Graphics::Panel and Bio::Graphics::Glyph.

Description

This glyph draws an arrow which has a circle ("christmas ball")
dangling at one end. In addition to the common options, the following glyph-specific
options are recognized:

  Option      Description                  Default
  ------      -----------                  -------

  -radius     Radius of the circle          4
              glyph

  -length     Length of the arrow           20

  -height     Standard option, but          10
              important here

Methods

Methods description

None available.

Methods code

sub default_radius {

  return 4;

}

sub default_length {

  return 20;

}

sub draw_component {

  my $self = shift;
  my $gd = shift;
  my ($x1,$y1,$x2,$y2) = $self->calculate_boundaries(@_);
  
  my $fg = $self->fgcolor;
  
  my $radius = defined $self->option('radius') ? $self->option('radius') : $self->default_radius ();
  
  $gd->filledEllipse($x1+$radius, $y2-$radius, 2*$radius, 2*$radius, $fg);
  
  my $length = defined $self->option('length') ? $self->option('length') : $self->default_length();

  my $angle = deg2rad(30);
  my $dx = 6;
  my $dy = 4;
  my $midX = $x2-$dx;
  my $midY = $y1+$dy;

  $gd->line($x1+$radius, $y2-$radius, $x1+$radius, $y1+$dy, $fg);

  return if ($x2-$x1 <= $radius);
  
  $x2 = $x1+$radius+$length;
  $gd->line($x1+$radius, $midY, $x2, $midY, $fg);
  $gd->line($x2, $midY, $x2-$dx, $y1, $fg);
  $gd->line($x2, $midY, $x2-$dx, $y1+2*$dy, $fg);

}

General documentation

Please report them.

Bio::Graphics::Panel,
Bio::Graphics::Glyph,
Bio::Graphics::Glyph::arrow,
Bio::Graphics::Glyph::cds,
Bio::Graphics::Glyph::crossbox,
Bio::Graphics::Glyph::diamond,
Bio::Graphics::Glyph::dna,
Bio::Graphics::Glyph::dot,
Bio::Graphics::Glyph::ellipse,
Bio::Graphics::Glyph::extending_arrow,
Bio::Graphics::Glyph::generic,
Bio::Graphics::Glyph::graded_segments,
Bio::Graphics::Glyph::heterogeneous_segments,
Bio::Graphics::Glyph::line,
Bio::Graphics::Glyph::pinsertion,
Bio::Graphics::Glyph::primers,
Bio::Graphics::Glyph::rndrect,
Bio::Graphics::Glyph::segments,
Bio::Graphics::Glyph::ruler_arrow,
Bio::Graphics::Glyph::toomany,
Bio::Graphics::Glyph::transcript,
Bio::Graphics::Glyph::transcript2,
Bio::Graphics::Glyph::translation,
Bio::Graphics::Glyph::triangle,
Bio::DB::GFF,
Bio::SeqI,
Bio::SeqFeatureI,
Bio::Das,
GD

Vsevolod (Simon) Ilyushchenko <simonf@cshl.edu>.
Copyright (c) 2004 Cold Spring Harbor Laboratory
This library is free software; you can redistribute it and/or modify
it under the same terms as Perl itself. See DISCLAIMER.txt for
disclaimers of warranty.