Draw an arc on the screen.

An arc is a segment that traces part of the outline of a circle. If you are looking for something shaped like a piece of pie, then you want a segment.

Arcs are often drawn on top of a segment to get an affect where a piece of pie is filled in, but only the curvy edge is stroked.

Note that you can fill an arc, but that will result in a shape that looks like a potato wedge.

Data

{radius, start, finish}

The data for an arc is a three-tuple.

• radius - the radius of the arc
• start - the starting angle in radians
• finish - end ending angle in radians

Styles

This primitive recognizes the following styles

• hidden - show or hide the primitive
• fill - fill in the area of the primitive
• stroke - stroke the outline of the primitive. In this case, only the curvy part.

Usage

You should add/modify primitives via the helper functions in Scenic.Primitives