Problem 3
This problem uses is the Phong equation, which is based on V.R instead of Blinn-Phong's N.H.
Problem 5
Be careful to note the order of the points when constructing the control polygons and curves.
Please use a straight edge for constructing the various line segments and point.
In many cases, the various points you will create will land on grid lines. So, please use the grid lines where possible.
Part (c):
Note that t = 1.
Changed wording about repeating the endpoints to say: "Assume that we insert “phantom” control points C-1=C0 and C4=C3, so that the spline is endpoint interpolating." (PDF updated on 5/21/13)
Part (d):
Changed wording about repeating the endpoints to say: "Assume that we insert “phantom” control points B-2=B-1=B0 and B5=B4=B3, so that the spline is endpoint interpolating." (PDF updated on 5/21/13)