getArcLength
Public Function
Get the length of an arc between two points on a circle's perimeter.
Parameters
| Name | Description | 
|---|---|
  | The circle's center as [x, y].  | 
  | The circle's radius.  | 
  | The first point.  | 
  | The second point.  | 
Returns
number
Public Function
Get the length of an arc between two points on a circle's perimeter.
| Name | Description | 
|---|---|
  | The circle's center as [x, y].  | 
  | The circle's radius.  | 
  | The first point.  | 
  | The second point.  | 
number