# CG Lecture 32, Wed 2016-11-30

- Iclicker questions.
- Handwritten notes from 11/28.
- How to find a point on a cubic Bezier curve by hand.
- How to subdivide a cubic Bezier curve into 2. That is, given the 4 control points of one curve, find the 4 control points of 2 curves that together match the original curve.
- How to hand-draw a cubic B-spline from a control polygon. It's really quite simple, which you wouldn't guess from most of the texts on splines.
- 15_2 Ray tracing.