Added cockpit mode location tracking.

git-svn-id: http://worldwind31.arc.nasa.gov/svn/trunk@1815 822214bb-dcf7-4c8d-a767-17ae0fb20d88
Repaired overflow error for bulk retrieval data size. Added check for empty sector in WWLevelSet. Added world file handling to WWSector.

git-svn-id: http://worldwind31.arc.nasa.gov/svn/trunk@1816 822214bb-dcf7-4c8d-a767-17ae0fb20d88
Modified TAIGA location tracking to maintain the navigator's zoom distance and tilt.

git-svn-id: http://worldwind31.arc.nasa.gov/svn/trunk@1817 822214bb-dcf7-4c8d-a767-17ae0fb20d88
Eliminated unnecessary location forecasting and smoothing in LocationTrackingViewController.

git-svn-id: http://worldwind31.arc.nasa.gov/svn/trunk@1818 822214bb-dcf7-4c8d-a767-17ae0fb20d88
Modified WWNavigator's default animation duration to include change in heading, tilt and roll.

git-svn-id: http://worldwind31.arc.nasa.gov/svn/trunk@1819 822214bb-dcf7-4c8d-a767-17ae0fb20d88
Updated release version.

git-svn-id: http://worldwind31.arc.nasa.gov/svn/trunk@1820 822214bb-dcf7-4c8d-a767-17ae0fb20d88
Corrected the WMS layer names in the default elevation model configuration file EarthElevations2.xml.

git-svn-id: http://worldwind31.arc.nasa.gov/svn/trunk@1821 822214bb-dcf7-4c8d-a767-17ae0fb20d88
Added Aster elevations.

git-svn-id: http://worldwind31.arc.nasa.gov/svn/trunk@1822 822214bb-dcf7-4c8d-a767-17ae0fb20d88
Modified TiledImageLayer, RectangularTessellator and SurfaceObjectTileBuilder to use a common pattern for determining when to subdivide a tile. This change does not affect the runtime level of detail. Repaired an issue where TiledImageLayer.needToSplit incorrectly converts from texel size in radians to texel size in meters, see WWJ-448.

git-svn-id: http://worldwind31.arc.nasa.gov/svn/trunk@1823 822214bb-dcf7-4c8d-a767-17ae0fb20d88
Modified TiledImageLayer, RectangularTessellator and SurfaceObjectTileBuilder to display the correct level of detail for a narrow field of view. See WWJ-445.

git-svn-id: http://worldwind31.arc.nasa.gov/svn/trunk@1824 822214bb-dcf7-4c8d-a767-17ae0fb20d88
Repaired incorrect inline documentation in WWDrawContext and WWMath.

git-svn-id: http://worldwind31.arc.nasa.gov/svn/trunk@1825 822214bb-dcf7-4c8d-a767-17ae0fb20d88
Updated the World Wind Examples app's performance statistics view to include a draw continuously switch.

git-svn-id: http://worldwind31.arc.nasa.gov/svn/trunk@1826 822214bb-dcf7-4c8d-a767-17ae0fb20d88
Improved the GPU performance of the SurfaceTileRenderer fragment program.

git-svn-id: http://worldwind31.arc.nasa.gov/svn/trunk@1827 822214bb-dcf7-4c8d-a767-17ae0fb20d88
Updated METAR data URL.

git-svn-id: http://worldwind31.arc.nasa.gov/svn/trunk@1828 822214bb-dcf7-4c8d-a767-17ae0fb20d88
Improved the performance of WWSurfaceTileRenderer by eliminating unnecessary rendering of non-overlapping tiles.

git-svn-id: http://worldwind31.arc.nasa.gov/svn/trunk@1829 822214bb-dcf7-4c8d-a767-17ae0fb20d88
Simplified WWTiledImageLayer's tileMeetsRenderCriteria method.

git-svn-id: http://worldwind31.arc.nasa.gov/svn/trunk@1830 822214bb-dcf7-4c8d-a767-17ae0fb20d88
Updated version strings.

git-svn-id: http://worldwind31.arc.nasa.gov/svn/trunk@1831 822214bb-dcf7-4c8d-a767-17ae0fb20d88
Updated ViewController.xib with auto-generated Xcode updates.

git-svn-id: http://worldwind31.arc.nasa.gov/svn/trunk@1832 822214bb-dcf7-4c8d-a767-17ae0fb20d88
Eliminated an unnecessary vector multiplication in SurfaceTileRenderer.frag.

git-svn-id: http://worldwind31.arc.nasa.gov/svn/trunk@1833 822214bb-dcf7-4c8d-a767-17ae0fb20d88
Updated version to 027.

git-svn-id: http://worldwind31.arc.nasa.gov/svn/trunk@1834 822214bb-dcf7-4c8d-a767-17ae0fb20d88