# CS 284: CAGD

Lecture #23 -- Tu 11/14, 2006.

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**
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**What is the key insight that allows meshes to be represented with just one scalar value per vertex (with a few exceptions) ?**

Why is the choice of the starting mesh really crucial ?

What are the main steps of the construction algorithm for normal meshes ?

How are normal meshes related to subdivision surfaces and fractal mountains ?

**Why is such a re-parametrization desirable ?**

How is the curvature field sampled, constructed ?

Why is there a restriction to genus 0 on page 2 ?

What routines, programs is the algorithm built upon ?

What is the key advice about implementation given in the paper ?

A
genus-3 object with suitably aligned quadrilateral parametrization.

**READ: **

**NR'98: Non-Uniform Recursive Subdivision ...**

**TS'03: T-Splines and T-NURCCs**

The 3 teams who implemented quad subdivision, please have your demos ready for Thursday.

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Page Editor: Carlo H. Séquin