expandSquare(cornerPoints, oldSide, newSide) {
			let ratio = newSide / (2.0 * oldSide);
			let dx = cornerPoints[0].getX() - cornerPoints[2].getX();
			let dy = cornerPoints[0].getY() - cornerPoints[2].getY();
			let centerx = (cornerPoints[0].getX() + cornerPoints[2].getX()) / 2.0;
			let centery = (cornerPoints[0].getY() + cornerPoints[2].getY()) / 2.0;
			let result0 = new ResultPoint(centerx + ratio * dx, centery + ratio * dy);
			let result2 = new ResultPoint(centerx - ratio * dx, centery - ratio * dy);
			dx = cornerPoints[1].getX() - cornerPoints[3].getX();
			dy = cornerPoints[1].getY() - cornerPoints[3].getY();
			centerx = (cornerPoints[1].getX() + cornerPoints[3].getX()) / 2.0;
			centery = (cornerPoints[1].getY() + cornerPoints[3].getY()) / 2.0;
			let result1 = new ResultPoint(centerx + ratio * dx, centery + ratio * dy);
			let result3 = new ResultPoint(centerx - ratio * dx, centery - ratio * dy);
			let results = [result0, result1, result2, result3];
			return results;
		}
Expand the square represented by the corner points by pushing out equally in all directions

@param cornerPoints the corners of the square, which has the bull's eye at its center
@param oldSide the original length of the side of the square in the target bit matrix
@param newSide the new length of the size of the square in the target bit matrix
@return the corners of the expanded square