![]() Each operates independently of the others on its own canvas. ![]() A web page may contain more than one WorldWindow object. It’s passed to WorldWind during construction of a WorldWindow object. The canvas is created by the app, typically within a element in an HTML page. ![]() The WorldWindow object encapsulates Web WorldWind’s functionality around an HTML canvas. The primary WorldWind component is called WorldWindow. Objects implementing a particular interface may be used wherever that interface is called for. Items in grey represent work WorldWind performs behind the scenes to retrieve data from the network and draw what the user sees.Īll the objects above can be those provided by WorldWind or those created by application developers. This figure illustrates Web WorldWind’s architecture. Extensibility is a fundamental objective of WorldWind. Concrete classes can also be replaced or extended. The API is defined primarily by interfaces, so components can be selectively replaced by alternative components. WorldWind provides a collection of components that interactively display 3D geographic information within a browser. Other components provide textual or graphic information or provide a user interface. As a component, it comprises one aspect of a web application or web page. It provides an interactive, 3D geographic context for information. Web WorldWind is a virtual globe that you embed in web pages. NASA WorldWind Workshop Learn how to build web apps with NASA's 3D virtual globe technology. NASA WorldWind Workshop | Learn how to build web apps with NASA’s 3D virtual globe technology.
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