- GREAT Day
- Tomorrow
- Extra credit similar to colloquia for summary/reaction to any one
math talk or poster
- ...Or for any one UpStat talk
- Related terms = encapsulation, abstract data types, object oriented programming
- Example: geometric objects
- Described by a transformation, a color, a ray intersection function, and a normal function
- Problem: Keeping implementations and uses of an idea consistent throughout program
- Solution: Implement once, with well-defined interface
- Trade-offs: code is easier to write correctly and debug, but bigger and slower
- Examples from my ray tracer: object.m along with sphere.m and triangle.m, surfaceColor.m
- Sampler module is the most modular in design
- Constructor - makeCosineSampler
- Accessors - sampleCosine, cosinePDF
- Representation - struct w/ 5 fields
- Abstract data type = set of values (e.g., samplers) defined solely by operations
- Designing programs
- Testing and debugging