![]() ![]() World Wind Central lists dozens of add-ons, scripts, and plugins, from map packs to information overlays to new functionality - all of which still run only on Windows. Likewise, neither Google Earth nor vanilla World Wind interface with GPS devices, but third-party developers have written a World Wind GPS Tracker plugin. It is no surprise, then, that one of the first add-ons developed by third-party programmers was OneEarth - a plugin to allow clients to request data from any map server speaking the WMS (Web Map Service) standard. The World Wind code is straightforward enough - request tile coordinates from the server, then composite the results together on the client side, rendering each layer in the specified order and opacity (unlike Keyhole and Google Earth, which combine map data on the server side). But open source developers are still interested. Net, which should run on Mono, the DirectX requirement is an obstacle to porting the application to non-Windows platforms. Though the current release (1.3.2) is built on. The first widespread public release was in early August 2004, under the NASA Open Source Agreement. Trouble arose when implementing the visualization, however, so a proof-of-concept was drawn up in C# and DirectX and released as World Wind 1.0. According to project spokesman Randy Kim, the original core was intended to run on Linux and Windows using OpenGL. The World Wind project began in 2002 at NASA Learning Technologies, a lab whose purpose is to develop educational software for delivering NASA data.
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