fillArc(x, y, radius, start, end, antiClockwise) {
		this.strokeArc(x, y, radius, start, end, antiClockwise || false, true);
	}
Fill an arc at the specified coordinates with given radius, start and end points
@param {number} x - arc center point x-axis
@param {number} y - arc center point y-axis
@param {number} radius
@param {number} start - start angle in radians
@param {number} end - end angle in radians
@param {boolean} [antiClockwise=false] - draw arc anti-clockwise