/usr/lib/perl5/Ace/Graphics/Glyph/triangle.pm is in libace-perl 1.92-2build3.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 | package Ace::Graphics::Glyph::triangle;
# DAS-compatible package to use for drawing a triangle
use strict;
use vars '@ISA';
@ISA = 'Ace::Graphics::Glyph';
sub draw {
my $self = shift;
my $gd = shift;
my $fg = $self->fgcolor;
my $orient = $self->option('orient') || 'S';
# find the center and vertices
my ($x1,$y1,$x2,$y2) = $self->calculate_boundaries(@_);
my $fg = $self->fgcolor;
my $xmid = ($x1+$x2)/2;
my $ymid = ($y1+$y2)/2;
my ($vx1,$vy1,$vx2,$vy2,$vx3,$vy3) = undef;
#effectively the width of the base
my $p = abs($x2 - $x1);
my $q = $p/2;
if ($self->option('point')){
$p = $self->option('point');
$p = $p > $self->option('height') ? $self->option('height') : $p;
$q = $p/2;
$x1 = $xmid - $q; $x2 = $xmid + $q;
$y1 = $ymid - $q; $y2 = $ymid + $q;
}
if ($orient eq 'N'){$vx1=$xmid-$q;$vy1=$y1;$vx2=$xmid+$q;$vy2=$y1;$vx3=$xmid;$vy3=$y2;}
elsif($orient eq 'S'){$vx1=$xmid-$q;$vy1=$y2;$vx2=$xmid+$q;$vy2=$y2;$vx3=$xmid;$vy3=$y1;}
elsif($orient eq 'E'){$vx1=$x2;$vy1=$y1;$vx2=$x2;$vy2=$y2;$vx3=$x2-$p;$vy3=$ymid;}
elsif($orient eq 'W'){$vx1=$x1;$vy1=$y1;$vx2=$x1;$vy2=$y2;$vx3=$x1+$p;$vy3=$ymid;}
# now draw the triangle
$gd->line($vx1,$vy1,$vx2,$vy2,$fg);
$gd->line($vx2,$vy2,$vx3,$vy3,$fg);
$gd->line($vx3,$vy3,$vx1,$vy1,$fg);
if ($self->option('fillcolor')){
my $c = $self->color('fillcolor');
$gd->fill($xmid,$ymid,$c);
}
$self->draw_label($gd,@_) if $self->option('label');
}
1;
__END__
=head1 NAME
Ace::Graphics::Glyph::ex - The "triangle" glyph
=head1 SYNOPSIS
See L<Ace::Graphics::Panel> and L<Ace::Graphics::Glyph>.
=head1 DESCRIPTION
This glyph draws an isoceles triangle. It is possible to draw
the triangle with the base on the N, S, E, or W side.
=head2 OPTIONS
In addition to the common options, the following glyph-specific
options are recognized:
Option Description Default
------ ----------- -------
-point Whether to draw a triangle feature width
with base the scaled width
of the feature or length
point.
-orient On which side shall the S
base be? (NSEW)
=head1 BUGS
Please report them.
=head1 SEE ALSO
L<Ace::Sequence>, L<Ace::Sequence::Feature>, L<Ace::Graphics::Panel>,
L<Ace::Graphics::Track>, L<Ace::Graphics::Glyph::anchored_arrow>,
L<Ace::Graphics::Glyph::arrow>,
L<Ace::Graphics::Glyph::box>,
L<Ace::Graphics::Glyph::primers>,
L<Ace::Graphics::Glyph::segments>,
L<Ace::Graphics::Glyph::toomany>,
L<Ace::Graphics::Glyph::transcript>,
=head1 AUTHOR
Allen Day <day@cshl.org>.
Copyright (c) 2001 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.
=cut
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