Jan Krc-Jediny
Abstract
Spatial information is an important part of geographic information systems, CAD and CAM systems, and user interfaces for visualization of any kind of information. The object-oriented approach to spatial object modelling results in much more understandable designs than non-object-oriented approaches.
This tutorial describes the design of several key components of a system for dealing with spatial information which are: analytical geometry closed with respect to union, intersection and complement operations; hierarchically structured objects for maintaining topological information; object identity and problems arising from change of spatial objects in the database and user interface, transactions and copies of objects; dependencies of spatial objects and their copies in the MVC user-interface architecture.
You should have experience in building user-interfaces and should have some background in analytical geometry. Examples are shown in Smalltalk, so a basic knowledge of Smalltalk would be helpful.
Index Terms
- Object-oriented geometry and graphics (abstract)
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