NASA World Wind is a 3D API for rendering planets like Earth using data from NASA. It is based on JOGL and allows adding 3D objects and other data layers. The API contains classes for configuration, rendering, views, layers and controllers. It also includes demos for visualizing grids, shapes, images, and stereo views using anaglyph glasses.

1. Creative Commons Attribution-NonCommercial-ShareAlike 2.5 License
NASA World Wind for Java
API Overview
Fabrizio Giudici
Fabrizio Giudici – fabrizio.giudici@tidalwave.it – JUG Milano
Javaday Roma - 01/12/2007

2. In a few words...
Creative Commons Attribution-NonCommercial-ShareAlike 2.5 License
● 3D API for rendering the Earth
– ... but also other planets
● Default data from NASA
– You can feed other data providers
– Beware of terms of use
● You can add your own objects
Fabrizio Giudici – fabrizio.giudici@tidalwave.it – JUG Milano
Javaday Roma - 01/12/2007

3. Some basic facts
Creative Commons Attribution-NonCommercial-ShareAlike 2.5 License
● Based on JOGL (OpenGL bindings for Java)
– Fast!
– Fast Video Card required
– But beware of drivers (especially in Linux)
– Native library required
● You don't need to learn JOGL
Fabrizio Giudici – fabrizio.giudici@tidalwave.it – JUG Milano
Javaday Roma - 01/12/2007

4. Basic classes
Creative Commons Attribution-NonCommercial-ShareAlike 2.5 License
● Configuration
– How to set up things
● WorldWindowGLCanvas
– The components that renders the scene
● Model
– What we are going to render
Fabrizio Giudici – fabrizio.giudici@tidalwave.it – JUG Milano
Javaday Roma - 01/12/2007

5. Basic classes
Creative Commons Attribution-NonCommercial-ShareAlike 2.5 License
● Layer(s)
– Stacked sets of rendered objects
● View, OrbitView
– The coordinates and other attributes of the view
point
● SceneController
– The controller
Fabrizio Giudici – fabrizio.giudici@tidalwave.it – JUG Milano
Javaday Roma - 01/12/2007

6. Standard Layers
Creative Commons Attribution-NonCommercial-ShareAlike 2.5 License
● Stars ● USGSUrbanAreaOrtho
● Fog ● CountryBoundaries
● SkyGradient ● EarthNASAPlaceName
● BMNGSurface ● ScaleBar
● LandsatI3 ● WorldMap
● USGSDigitalOrtho ● Compass
Fabrizio Giudici – fabrizio.giudici@tidalwave.it – JUG Milano
Javaday Roma - 01/12/2007

7. The demos
Creative Commons Attribution-NonCommercial-ShareAlike 2.5 License
● ViewIteration ● SurfaceImages
● GlobalGridAboveSurface ● TexturedSurfaceShape
● Shapes ● Tracks
● DraggingShapes ● AnaglyphStereo
run-demo.bash demo_name
Fabrizio Giudici – fabrizio.giudici@tidalwave.it – JUG Milano
Javaday Roma - 01/12/2007

8. ViewIteration
Creative Commons Attribution-NonCommercial-ShareAlike 2.5 License
● Goes to a specific location applying a smooth
transition
● OrbitView
● ScheduledOrbitViewStateIterator
Fabrizio Giudici – fabrizio.giudici@tidalwave.it – JUG Milano
Javaday Roma - 01/12/2007

9. GlobalGridAboveSurface
Creative Commons Attribution-NonCommercial-ShareAlike 2.5 License
● Draws a grid over the surface
● RenderableLayer
● PolyLine
– color
– numSegments
– followTerrain
Fabrizio Giudici – fabrizio.giudici@tidalwave.it – JUG Milano
Javaday Roma - 01/12/2007

10. Shapes
Creative Commons Attribution-NonCommercial-ShareAlike 2.5 License
● Sticks and renders many different shapes at
given coordinates
● RenderableLayer
– SurfaceSector, SurfaceEllipse,
SurfaceSquare, SurfaceCircle,
SurfaceQuad, Quadrilateral,
SurfacePolygon, PolyLine
● IconLayer
● WWIcon, UserFacingIcon
Fabrizio Giudici – fabrizio.giudici@tidalwave.it – JUG Milano
Javaday Roma - 01/12/2007

11. DraggingShapes
Creative Commons Attribution-NonCommercial-ShareAlike 2.5 License
● Surface shapes can be selected and dragged
● SelectListener
– SelectEvent.HOVER
– SelectEvent.ROLLOVER
– SelectEvent.DRAG
– SelectEvent.DRAG_END
Fabrizio Giudici – fabrizio.giudici@tidalwave.it – JUG Milano
Javaday Roma - 01/12/2007

12. SurfaceImages
Creative Commons Attribution-NonCommercial-ShareAlike 2.5 License
● Paints a given image over the surface
● RenderableLayer
– SurfaceImage
Fabrizio Giudici – fabrizio.giudici@tidalwave.it – JUG Milano
Javaday Roma - 01/12/2007

13. TexturedSurfaceShape
Creative Commons Attribution-NonCommercial-ShareAlike 2.5 License
● Paints a shape with a given texture over the
surface
● RenderableLayer
– SurfaceSector
– TexturePaint
Fabrizio Giudici – fabrizio.giudici@tidalwave.it – JUG Milano
Javaday Roma - 01/12/2007

14. Tracks
Creative Commons Attribution-NonCommercial-ShareAlike 2.5 License
● Renders a track with waypoints
● TrackMarkerLayer
– Track
Fabrizio Giudici – fabrizio.giudici@tidalwave.it – JUG Milano
Javaday Roma - 01/12/2007

15. Anaglyph Stereo
Creative Commons Attribution-NonCommercial-ShareAlike 2.5 License
● Renders a 3D view that can be viewer with 3D
glasses
● Configuration
● AnaglyphSceneController
– setDisplayMode(...)
– setFocusAngle(...)
Fabrizio Giudici – fabrizio.giudici@tidalwave.it – JUG Milano
Javaday Roma - 01/12/2007

16. Contacts & Links
Creative Commons Attribution-NonCommercial-ShareAlike 2.5 License
● http://worldwind.arc.nasa.gov/java
● http://bluemarine.tidalwave.it
● http://forceten.tidalwave.it (soon)
● http://weblogs.java.net/blog/fabriziogiudici
● http://www.tidalwave.it/people
Fabrizio Giudici – fabrizio.giudici@tidalwave.it – JUG Milano
Javaday Roma - 01/12/2007