3 Parametric Curves and Surfaces with unset
The curvature at the end of the first curve and at the start of the second curve ((C1) and (C2)). Solution: 1. Reparameterize the input curves. We do that so that we know that the start of the curve evaluates at (t=0) and the end at (t=1). 2. Extract the end and start points of the two curves, and check whether they coincide.