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# Manual Reference Pages  -  GEOMETRY::PRIMITIVE::ARC (3)

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### NAME

Geometry::Primitive::Arc - Portion of the circumference of a Circle

### DESCRIPTION

Geometry::Primitive::Arc represents a closed segment of a curve.

### SYNOPSIS

```

use Geometry::Primitive::Arc;

my \$arc = Geometry::Primitive::Arc->new(
angle_start => 0,
angle_end => 1.57079633,
);

```

### ATTRIBUTES

#### angle_start

The starting angle for this arc in radians.

#### angle_end

The ending angle for this arc in radians.

Returns the radius of the arc.

#### origin

Set/Get the origin of this arc.

### METHODS

#### new

Creates a new Geometry::Primitive::Arc

#### 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.

#### length

Returns the length of this arc.

#### point_end

Get the end point. Provided for Shape role.

#### point_start

Get the start point. Provided for Shape role.

#### scale (\$amount)

Increases the radius by multiplying it by the supplied amount.

### AUTHOR

Cory Watson <gphat@cpan.org>