ReVisitor CityGML Library

Version 0.1

CityGML is a common information model for the representation of 3D urban objects. CityGML is realised as an open data model and XML-based format for the storage and exchange of virtual 3D city models. It is implemented as an application schema for the Geography Markup Language 3 (GML3), the extendible international standard for spatial data exchange issued by the Open Geospatial Consortium (OGC) and the ISO TC211. CityGML is an OGC standard.

ReVisitors CityGML library is implemented in C++. It is based on wxWidgets, an open-source cross platform library. For the XML processing, the XML DOM wxXmlDocument is used. The DOM contains wxXmlNodes.

GML nodes reside in the gml namespace, while CityGML nodes reside in the cgml namespace.

All GML and CityGML nodes inherit from a common gml::_Base node, which includes convinience methods for gml::name, gml::id and gml::description.

The root node of a city model is cgml::CityModel. The objects in a city model inherit from the cgml::_CityObject class. A city object is created through the static cgml::_CityObject::Create method which takes an enumerative cgml::ECityObject as argument. Only some of the enumerated values are currently implemented.