# CS 285: SOLID MODELING, Spring 2000

CS 285 HOME < - - - - > CURRENT LECTURE

# CS 285 Course Goals for Spring 2000

## Solid Modeling and Fabrication for Industrial, Commercial, and Artistic Applications

Not just CAs (COMPUTER-AIDED shaping) of forms that may look good on a computer screen,

---- e.g., with a giant B-Spline patch with dozens of freely movable control points.

But caD (computer-aided DESIGN) of solids that can be fabricated and that are worth being fabricated.

==> Designing with serious functional and/or aesthetic constraints.

==> Leading to "usable" or enjoyable physical parts.

• A#1: "Design Examples"
• Understanding the design process;
• and its decomposition into individual steps.

• A#2: "Mugs and Teapots"
• Phase 1: - Some loose functional and aestetic constraints.
• Phase 2: - A description that can be "understood" by QuickSlice.

• A#3: "Escher Spheres"
• Phase 1: - Strict symmetry constraints: 120-fold icosahedral group.
• Phase 2: - Water-tight representation; show tile boundaries in bas-relief.

• A#4: "Gear Wheels"
• Phase 1: - Understanding gear wheels and their interaction; - Creating a parameterized generator that captures this understanding.
• Phase 2: - Extending the generator to making bevel gears; - Applying that generator to making a coupled gear cluster.

• A#5: "Snap-together Tiles"
• Phase 1: - Design parts that form a modular set; - and which interact extremely tightly. - How to "sell" your design ideas.
• Phase 2: - Introduce materials properties (ABS plastic from an FDM machine). - Consider requirements of injection mold making. - Make Boolean operations work in the QuickSlice environment.

• A#6: "Recursive Torus"
• The creative aspects of the conceptual design process.
• Tough test cases to give the Boolean pipeline a workout.

• The Project:
• Putting several of the above elements together.

Page Editor: Carlo H. Séquin