cubicTo
Adds a cubic bezier from the last point, approaching control points (controlPoint1.x,controlPoint1.y) and (controlPoint2.x,controlPoint2.y), and ending at (endPoint.x,endPoint.y). If no moveTo children has been added to this Path, then the first point is automatically set to (0,0).
Parameters
controlPoint1
The 1st control point on a cubic curve
controlPoint2
The 2nd control point on a cubic curve
endPoint
The end point on a cubic curve