/usr/share/perl5/Geometry/Primitive/Arc.pm is in libgeometry-primitive-perl 0.24-1.
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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 | package Geometry::Primitive::Arc;
use Moose;
use MooseX::Storage;
with qw(Geometry::Primitive::Shape MooseX::Clone MooseX::Storage::Deferred);
use Geometry::Primitive::Point;
has 'angle_start' => (
is => 'rw',
isa => 'Num',
required => 1
);
has 'angle_end' => (
is => 'rw',
isa => 'Num',
required => 1
);
has 'origin' => (
is => 'rw',
isa => 'Geometry::Primitive::Point',
coerce => 1
);
has 'radius' => (
is => 'rw',
isa => 'Num',
required => 1
);
# Area of a sector, if it's ever needed...
# sub area {
# my ($self) = @_;
#
# return (($self->radius**2 * ($self->angle_end - $self->angle_start)) / 2
# );
# }
sub get_point_at_angle {
my ($self, $angle) = @_;
return Geometry::Primitive::Point->new(
x => $self->origin->x + ($self->radius * cos($angle)),
y => $self->origin->y + ($self->radius * sin($angle))
);
}
sub length {
my ($self) = @_;
return $self->radius * ($self->angle_end - $self->angle_start);
}
sub point_end {
my ($self) = @_;
return $self->get_point_at_angle($self->angle_end);
}
sub point_start {
my ($self) = @_;
return $self->get_point_at_angle($self->angle_start);
}
sub scale {
my ($self, $amount) = @_;
$self->radius($self->radius * $amount);
}
__PACKAGE__->meta->make_immutable;
no Moose;
1;
__END__
=head1 NAME
Geometry::Primitive::Arc - Portion of the circumference of a Circle
=head1 DESCRIPTION
Geometry::Primitive::Arc represents a closed segment of a curve.
=head1 SYNOPSIS
use Geometry::Primitive::Arc;
my $arc = Geometry::Primitive::Arc->new(
angle_start => 0,
angle_end => 1.57079633,
radius => 15
);
=head1 ATTRIBUTES
=head2 angle_start
The starting angle for this arc in radians.
=head2 angle_end
The ending angle for this arc in radians.
=head2 radius
Returns the radius of the arc.
=head2 origin
Set/Get the origin of this arc.
=head1 METHODS
=head2 new
Creates a new Geometry::Primitive::Arc
=head2 get_point_at_angle
Given angle in radians returns the point at that angle on this arc. Returns
undef if the angle falls outside this arc's range.
=head2 length
Returns the length of this arc.
=head2 point_end
Get the end point. Provided for Shape role.
=head2 point_start
Get the start point. Provided for Shape role.
=head2 scale ($amount)
Increases the radius by multiplying it by the supplied amount.
=head1 AUTHOR
Cory Watson <gphat@cpan.org>
=head1 COPYRIGHT & LICENSE
You can redistribute and/or modify this code under the same terms as Perl
itself.
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