/usr/share/perl5/Geometry/Primitive/Ellipse.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 | package Geometry::Primitive::Ellipse;
use Moose;
use MooseX::Storage;
use Moose::Util::TypeConstraints;
use Geometry::Primitive::Point;
use Math::Trig ':pi';
with qw(Geometry::Primitive::Shape MooseX::Clone MooseX::Storage::Deferred);
subtype 'My::Geometry::Primitive::Point' => as class_type('Geometry::Primitive::Point');
coerce 'My::Geometry::Primitive::Point'
=> from 'ArrayRef'
=> via { Geometry::Primitive::Point->new(x => $_->[0], y => $_->[1]) };
has 'height' => (
is => 'rw',
isa => 'Num',
default => 0
);
has 'origin' => (
is => 'rw',
isa => 'My::Geometry::Primitive::Point',
coerce => 1
);
has 'width' => (
is => 'rw',
isa => 'Num',
default => 0
);
sub area {
my ($self) = @_;
return (pi * $self->width * $self->height) / 4;
};
sub point_end {
my ($self) = @_;
return $self->point_start;
}
sub point_start {
my ($self) = @_;
return Geometry::Primitive::Point->new(
x => $self->origin->x,
y => $self->origin->y - ($self->height / 2)
);
}
sub scale {
my ($self, $amount) = @_;
return Geometry::Primitive::Ellipse->new(
height => $self->height * $amount,
width => $self->width * $amount
);
}
__PACKAGE__->meta->make_immutable;
no Moose;
1;
__END__
=head1 NAME
Geometry::Primitive::Ellipse - An Ellipse
=head1 DESCRIPTION
Geometry::Primitive::Ellipse represents an elliptical conic section.
=head1 SYNOPSIS
use Geometry::Primitive::Ellipse;
my $ellipse = Geometry::Primitive::Ellipse->new(
width => 15,
height => 10
);
print $ellipse->area;
=head1 ATTRIBUTES
=head2 height
Set/Get the height of this ellipse.
=head2 origin
Set/Get the origin of this ellipse.
=head2 width
Set/Get the width of this ellipse.
=head1 METHODS
=head2 new
Creates a new Geometry::Primitive::Ellipse
=head2 area
Returns the area of this ellipse.
=head2 point_end
Gets the "end" point for this Ellipse. Same as C<point_start>.
=head2 point_start
Get the point that "starts" this Ellipse. Returns the a point where the X
coordinate is the Ellipse origin X and the origin Y + height / 2.
=head2 scale ($amount)
Returns a new ellipse whose radius is $amount times bigger than this one.
=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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