Placemark = new WorldWind.Placemark(new WorldWind.Position(latitude, longitude, altitude)) WorldWindow manages the display of the globe and its layers using WebGL, in conjunction with an interactive view that defines the user’s view of the planet. In typical usage, applications create a WorldWindow then configure the globe and layers for their data. WorldWindow associates an HTML5 canvas with a WorldWind Globe, Layers, and Navigator. See the WorldWindow API documentation for its interface details. In addition to acting as a container for the Globe and other objects, the WorldWindow provides picking and scene control. 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 world wind api how to#
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.
0 kommentar(er)
