how to use this page

You can open this page with below params by a 'params' JSON argument.

1. title(optional)
2. backgroundColor(optional)
3. rounds(array)
   1. baseAngle(optional)
   2. denominator
   3. tracks(array)
      1. type(first or arc or line)
      2. angle
      3. radius(optional)
   4. fillStyle

sample links