for (var finger_point = 0; finger_point <= params.finger_points; finger_point++) {
var finger_progress = finger_point / params.finger_points;
var angle = (finger_angle + twirl_angle * finger_progress) * 2 * Math.PI;
for (var finger_point = 0; finger_point <= params.finger_points; finger_point++) {
var finger_progress = finger_point / params.finger_points;
var angle = (finger_angle + twirl_angle * finger_progress) * 2 * Math.PI;