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*LUA* drawArc function (for arcs and segments)

Showcase of a little function that allows you to draw a circle arc or circle segment.
The function can be minified to about 340 characters (or a bit less if you cut some of its features).

Usage is as follows:
drawArc(x, y, radius, *angle1, *angle2, *filled, *step)

The first 3 parameters are mandatory, the others can be left out.
The function will draw an arc or a filled circle segmet in a set radius between angle1 and angle2 around the center x,y.

Setting "filled" to true will cause it to draw a filled segment, otherwise just an arc.

"step" is used to define how round the circle is. This is set to 22.5° by default which is also what the drawCircle function uses in most cases. That means a full circle will consist of 8 segments.