Marble/GeoData: Difference between revisions
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== GeoData Overview == | == GeoData Overview == | ||
The Marble Framework has got two major design goals: | |||
* The Marble Framework should build strongly on [http://qt.gitorious.org/qt/pages/ApiDesignPrinciples#Naming+Enum+Types+and+Values Qt-API principles] and Qt design concepts. | |||
* The map data should be handled using classes that are modelled after the [http://code.google.com/intl/de/apis/kml/documentation/kmlreference.html KML OGC standard]. | |||
The KML standard itself describes the properties of a data model for maps: | |||
GeoData holds the data model that is internally used for any geographic information which should be rendered. It deals whith the data only, drawing is performed elsewhere. | GeoData holds the data model that is internally used for any geographic information which should be rendered. It deals whith the data only, drawing is performed elsewhere. | ||
Revision as of 16:46, 31 July 2009
GeoData Overview
The Marble Framework has got two major design goals:
- The Marble Framework should build strongly on Qt-API principles and Qt design concepts.
- The map data should be handled using classes that are modelled after the KML OGC standard.
The KML standard itself describes the properties of a data model for maps:
GeoData holds the data model that is internally used for any geographic information which should be rendered. It deals whith the data only, drawing is performed elsewhere.
GeoDataDocument describes a document.
A model representation is built through parsing of files and creating a stack of GeoDataObject representing its data. The Geodata objects are all modeled after the Google KML files as defined in the KML documentation.