CS 284: CAGD (SPLINES)
Lecture #18 -- Mo 10/26, 1998.
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Preparation:
Read handout: "Local surface interpolation with shape parameters
between adjoining Gregory patches," by Shirman and Sequin.
Lecture Topics
Representation of Surfaces
Reuse of the tricks familiar from curves
- Tensor-product Bezier patches
- Rectangular B-spline surfaces
- DeCasteljau evaluation
- Degree elevation
- Enforcing G-1 continuity
- Gregory patches
- Triangular Bezier patches
A System to Create G-1 Continuous Interpolating Surfaces
- Background of the UniCubix System
- Triangular patches that can be joined to qudrilateral tensor product patches
- Triangular Gregory patches
- Making G-1 continuous seams between patches
Remarks about Paper Presentations
See Schedule and Specifications for Presentations
Remarks about Course Projects
- Projects start after Programming Assignment #6.
- Projects can be done alone or in pairs.
- Projects must concern 1-, 2-, or 3-dimensional spline manifolds.
- Look at some project ideas and
start thinking about what you might want to do NOW.
Next Reading Assignment:
Again: "Local surface interpolation with shape parameters
between adjoining Gregory patches," by Shirman and Sequin.
Reminder: Midterm Quiz Corrections:
Due Wednesday October 28, 1998
Programming Assignment #6:
Due Wednesday November 11, 1998
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