Renamed the ContourBuilding example as ContourBuilderExample and added documentation.

git-svn-id: http://worldwind31.arc.nasa.gov/svn/trunk@2429 822214bb-dcf7-4c8d-a767-17ae0fb20d88
Added optimizations and minimum elevation to RadarVolumeExample.

git-svn-id: http://worldwind31.arc.nasa.gov/svn/trunk@2430 822214bb-dcf7-4c8d-a767-17ae0fb20d88
New working directory for Web World Wind

git-svn-id: http://worldwind31.arc.nasa.gov/svn/trunk@2431 822214bb-dcf7-4c8d-a767-17ae0fb20d88
Added documentation to ContourBuilder.

git-svn-id: http://worldwind31.arc.nasa.gov/svn/trunk@2432 822214bb-dcf7-4c8d-a767-17ae0fb20d88
Removed wrong directory name

git-svn-id: http://worldwind31.arc.nasa.gov/svn/trunk@2433 822214bb-dcf7-4c8d-a767-17ae0fb20d88
New working directory for Web World Wind

git-svn-id: http://worldwind31.arc.nasa.gov/svn/trunk@2434 822214bb-dcf7-4c8d-a767-17ae0fb20d88
Repaired documentation typos in ContourBuilder.

git-svn-id: http://worldwind31.arc.nasa.gov/svn/trunk@2435 822214bb-dcf7-4c8d-a767-17ae0fb20d88
Fix a bug where a contour with a saddle cell doesn't traverse past the saddle cell on the second encounter.
 
 Previously, the code tracked whether a cell had been visited with a single bit. This is not a sufficient condition for exiting the tracking of a contour. Specifically, when the saddle cell was visited the first time, it got marked as visited. When processing the saddle cell subsequently in the same contour, it would be noted that the saddle cell was already visited and the contour traversal would terminate. Even if there was more of the contour that needed to be traversed.
  
  The situation is even more complex. For example, a saddle cell can be part of either one or two contours. In the latter case, the inclusion of the saddle cell in an initial contour would prevent it from being included in a second contour, prematurely terminating the traversal of that second contour.
  
  The solution is to maintain more information about how a cell has been visited. Rather than track a single visit, all edges the cell contributes to a contour is now maintained. This gives the code more visibility into which contour(s) need to be traversed.
  
  The code tracking a seed cell (i.e., a cell that has not been visited for a particular contour) is both simpler and more complex. Previously, if a seed cell was visited at all, subsequent contours would not traverse beyond that seed cell. This is especially a problem where a seed cell is a saddle cell and that saddle seed cell contributes to 2 contours. By tracking which edges of a cell contributed to a contour, it is now possible to detect that a separate contour also goes through a saddle cell if it is later encountered as a seed cell.

git-svn-id: http://worldwind31.arc.nasa.gov/svn/trunk@2436 822214bb-dcf7-4c8d-a767-17ae0fb20d88