As part of my computer graphics, we've learnt about Bezier and B-spline curves. I'm going over some questions in preparation for my exam and I've come across a past exam question.
The question is "A B spline has control points (0, 0), (1, 0), (1, 1) and (0, 1). Calculate the coordinates of the midpoint of this curve".
Now, I'm assuming its safe to assume that we don't know what the curve looks like since the control points can either interpolate or approximate the curve. Do I use De Casteljau's algorithm to find the mid-point of the curve? If not, could anyone please point me in the right direction in figuring it out?