Marble/Placemark

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    Revision as of 21:01, 10 March 2016 by Ochurlaud (talk | contribs) (Ochurlaud moved page Projects/Marble/Placemark to Marble/Placemark)

    Overview of Placemarks in Marble

    The Expression error: Unrecognized word "x". is the class representing a placemark in Marble, with GeoData classes following kml specification. There are basically 2 kinds of Placemarks: Point Placemarks, and Placemarks containing a Geometry class inheriting Expression error: Unrecognized word "x"..

    Registration and use in MarbleModel

    The Expression error: Unrecognized word "x". provides registration of Placemarks within a Expression error: Unrecognized word "x".. The tree model stores multiple Expression error: Unrecognized word "x". corresponding to the data they hold.

    It is used currently by 3 frameworks:

    File Management

    The Expression error: Unrecognized word "x". performs file reading and then signals that files have been added/removed. It registers its document in the tree model. The role of the FileManager is:

    • Centralise file parsing while relying on the Expression error: Unrecognized word "x". to support various file formats thanks to Parsing plugins.
    • use threading support with FileLoader loading the file asynchronously (should be deprecated since the runner manager handles this already).
    • provide the results of those parsing to MarbleModel so that Marble can have easy access to the data.

    Placemark Search runners

    The Expression error: Unrecognized word "x". is a framework to query external servers for placemarks thanks to Placemark search plugins. The user types the query in the search line of the ControlBox widget, and then the MarbleRunnerManager provides the resulting Placemarks in the tree model.

    Position Provider

    The Expression error: Unrecognized word "x". class has a document to display the current position, as well as the track stored of past positions. That document belongs in the tree model.


    Display in the map

    The Point placemarks are displayed thanks to the Expression error: Unrecognized word "x". which does layouting of the labels, and filtering of the important placemarks to render, based on a popularity ranking.

    The Geometry placemarks are displayed thanks to the Expression error: Unrecognized word "x". which contains a Expression error: Unrecognized word "x"..