Add-ons and Plugins
World Wind can be expanded by using one of many add-ons - small extensions that add new functionality to the program.
Possible types of add-ons:
- Point layers - simple XML files displaying placemarks (point of interest) as icons
- Trail layers - paths (routes, boundaries)
- Line features - XML with a list of points visualized as a line or wall
- Polygon features - XML with a list of points visualized as a filled polygon (flat or extruded)
- Model features - XML used to load 3D textured meshes
- Place names - specific points (such as cities, hills and buildings) that are assigned text labels
- Image layers - high resolution imagery for various places in the world
- Scripts - files that control camera movement
Plugins are small programs written in C#, VB or J# which are loaded and compiled by World Wind at startup. Plug-in developers can add features to World Wind without changing the program's source code.
Read more about this topic: NASA World Wind