getPoint method
Implementation
@override
getPoint(t, optionalTarget) {
var point = optionalTarget ?? Vector2(null, null);
var v0 = this.v0, v1 = this.v1, v2 = this.v2, v3 = this.v3;
point.set(CubicBezier(t, v0.x, v1.x, v2.x, v3.x),
CubicBezier(t, v0.y, v1.y, v2.y, v3.y));
return point;
}