World wind – Java application
NASA world wind Java SDK 0.6 has some excellent features like distance and area measure tools, view visual control layer that gives a GUI to tilt, pan, and look around.
World wind java SDK has released in 2007 and various applications are emerged and gathered on the WWJ demo page. These applications are used to explore the ocean depth, track satellites, visualize information clusters, and control camera flying in the sky. The university of Muenster institute for Geoinformatics utilized WWJ for the project of a multi-touch wall.
Now we will discuss about world wind java SDK 0.5. Many new things are added in this new version like the view handling permits you for navigating over elevated terrains and underwater in accurate way. With this new version, you can also get very near to the ground. An open source and a fee WMS server are added in the SDK 0.5. Cubed LandSat and blue marble next generation are served through this new WMS infrastructure.
GeoNames layer of world wind java displays city names for the latest view. If you want to use this layer then you must download GeoNamesLayer.java and then remove the *.txt extension and then add it in SDK layers Earth package. This layer shows you city names below 1500km but without storing anything. It only sends requests for the service and then displays the current results. This layer does not allow you for knowing whether a location is a bigger or tiny village. However, it is useful for getting world city names, which are now displayed, in WWJ. This layer also provides several types of geographic features. WWJ forum member toolshed posted postcode for loading .obj and 3D models in SDK.
Creating image layers for world wind java
There are some experimental classes for creating procedural image layers. The test layer creates elevation colored tiles. First, you must download ProceduralTiledImageLayer.java and proceduralTestLayer.java. After this, you have to remove .txt extension and then add the layer into your SKK layers package. In order to use this layer, you must add an instance for your layer list and then set its wwd reference; otherwise, it will not produce the tiles.
There are many things that you should remember like when a tile is created, it cannot be cached and recomputed. There are several potential applications for procedural tiles. With the help of elevation data, you are able to create various kinds of ‘elevation colored’ maps, cast shadows, drawing ‘line of sight areas and compute shading.
Procedural shading layer is made for world wind java, which computes light from a fixed southeast light source. Java splash screen also added in world wind java. To add java splash screen, first you must download splash.Screen.java, then remove the .txt extension, and then add it into SDK examples package. In order to use it, you must create a no argument new instance of Splash Screen at the beginning of your application and then dispose of it when the main frame is set visible.
Technorati Tags: NASA, NASA world wind, features of NASA world wind,
Tags: NASA World Wind
