Added methods to the ExampleUtil static utility class that generate a random 2D grid of values and read a plain text file containing comma delimited values.

git-svn-id: http://worldwind31.arc.nasa.gov/svn/trunk@2425 822214bb-dcf7-4c8d-a767-17ae0fb20d88
Added example CSV data to support contouring examples. Modified the IntelliJ IDEA project settings to include CSV files when running from within the IDE.

git-svn-id: http://worldwind31.arc.nasa.gov/svn/trunk@2426 822214bb-dcf7-4c8d-a767-17ae0fb20d88
Initial implementation of a ContourBuilder, a utility class for computing contours in arbitrary 2D scalar fields.

git-svn-id: http://worldwind31.arc.nasa.gov/svn/trunk@2427 822214bb-dcf7-4c8d-a767-17ae0fb20d88
Updated log messages in AnalyticSurface constructors.

git-svn-id: http://worldwind31.arc.nasa.gov/svn/trunk@2428 822214bb-dcf7-4c8d-a767-17ae0fb20d88