list of classes

RSShape

RSShape is the root of all the Roassal shapes. A shape represents a visual element meant to be inserted in a RSCanvas. RSShape is an abstract class, not meant to be directly instantiated therefore.

Responsibility: A shape, i.e., subclass of the class RSShape is responsible to model a visual element.

Collaborators: A shape is meaningful when inserted in a canvas

Variables:

• paint: the color of the Athens paint object used to render the visual shape
• path: refers to AthensCairoPath, which is a resource of a foreign object, ie., the cairo on
• border:
• parent: the parent shape
• isFixed: a boolean indicating if the shape is fixed (ie., not subject to the camera position and movement)