2 ms·

with dynamic alpha, and mouse orient around x-axis: http://jsfiddle.net/rYa5d/1/ http://jsfiddle.net/rYa5d/1/

• elwell 13y ago
  Actually it's a little better when more spaced out: http://jsfiddle.net/rYa5d/8/ http://jsfiddle.net/rYa5d/8/