Divide the curve into two curves at the point specified by
Returns an array with two new curves without modifying the original curve. The function expects
t to lie between 0 and 1; values outside the range are constrained to 0 and 1, respectively.
This function is not a counterpart to the
line.divideAt() function. The relationship between
t and distance along a curve is complex and non-linear. If it is necessary to divide the curve at a certain
ratio (normalized length) away from beginning of the curve, use the