Point2D.Double upperLeft = PointsOperations.upperLeftPoint(start, point);
Point2D.Double bottomRight = PointsOperations.bottomRightPoint(start, point);
double width = bottomRight.x - upperLeft.x;
double height = bottomRight.y - upperLeft.y;
Shape shape = new Ellipse(upperLeft.x, upperLeft.y,
width, height, color, chat.getMyJID(), isFilled);
chat.draw(shape);
board.setCurrentShape(null);
}