Optionalangle?: numberShape's angle in radians. A value of 0 will have one of the shape's point facing up.
Optionaldisplacement?: number[]Displacement of the shape
Optionalfill?: FillFill style.
Number of points for stars and regular polygons. In case of a polygon, the number of points is the number of sides.
Optionalradius?: numberRadius of a regular polygon.
Optionalradius1?: numberOuter radius of a star.
Optionalradius2?: numberInner radius of a star.
OptionalrotateWhether to rotate the shape with the view.
Optionalrotation?: numberRotation in radians (positive rotation clockwise).
Optionalstroke?: StrokeStroke style.
Specify radius for regular polygons, or radius1 and radius2 for stars. See also: https://openlayers.org/en/latest/examples/regularshape.html