circle
A circle sector is the portion of a disk enclosed by two radii and an arc and it extends in the first and second axis by its radius and angle.
Return
the shape
Parameters
radius
the radius of the circle from which the sector is extracted
angle
the angle of the arc in radians, it determines its dimension in the second axis
heading
the angle in radians of the median segment which bisects the sector. It's used to determine the sector's heading.