Destination points must be an array with a length of 3 or 4. A length of 3 defines a parallelogram with the upper-left, upper-right, ...

Destination points must be an array with a length of 3 or 4. A length of 3 defines a parallelogram with the upper-left, upper-right, and lower-left corners. A length of 4 defines a quadrilateral with the fourth element of the array specifying the lower-right coordinate.