Coordinate Systems

JMU

Coordinate Systems
Software Design Considerations

Prof. David Bernstein
James Madison University

Computer Science Department

bernstdh@jmu.edu

Qualitative Goals: A Reminder

Adequate - Meets all of the requirements and satisfies all of the constraints
Reliable - Low probability of failure under normal operating conditions
Robust - Able to operate under a wide variety of condtions
Safe - Able to minmize the damage resulting from failure
Easy to Repair and Enhance
Easy to Understand/Document and Use
Easy to Re-use

High-Level Design

How should we model a point in, say, polar coordinates?
Where should the methods be?

High-Level Design (cont.)

Should we include methods for mixed-type operations?

Low-Level Design

Should we discretize angles to speed things up?
Should we store intermediate calculations?