14. Graphics Class Design

14.1 Design principles

14.1.1 Types

14.1.2 Operations

14.1.3 Naming

14.1.4 Mutability

14.2 Shape

14.2.1 An abstract class

14.2.2 Access control

14.2.3 Drawing shapes

14.2.4 Copying and mutability

14.3 Base and derived classes

14.3.1 Object layout

14.3.2 Deriving classes and defining virtual functions

14.3.3 Overriding

14.3.4 Access

14.3.5 Pure virtual functions

14.4 Benefits of object-oriented programming

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