Function arrow

Returns the points forming an arrow.

Example: Create an arrow anchored by its tip at 100,100

const opts = {
 tailLength: 10,
 arrowSize: 20,
 tailThickness: 5,
 angleRadian: degreeToRadian(45)
}
const arrow = Shapes.arrow({x:100, y:100}, `tip`, opts); // Yields an array of points

// Eg: draw points
Drawing.connectedPoints(ctx, arrow, {strokeStyle: `red`, loop: true});

arrow(origin, from, opts?): readonly Point[]
Parameters
- origin: Point
  Origin of arrow
- from: "tip" | "tail" | "middle"
  Does origin describe the tip, tail or middle?
- opts: ArrowOpts = {}
  Options for arrow
Returns readonly Point[]