CubicBezierEasing
Parameters
a
The x coordinate of the first control point. The line through the point (0, 0) and the first control point is tangent to the easing at the point (0, 0).
b
The y coordinate of the first control point. The line through the point (0, 0) and the first control point is tangent to the easing at the point (0, 0).
c
The x coordinate of the second control point. The line through the point (1, 1) and the second control point is tangent to the easing at the point (1, 1).
d
The y coordinate of the second control point. The line through the point (1, 1) and the second control point is tangent to the easing at the point (1, 1).