Overview Contour SDK Overview The Contour SDK is a powerful development tool that allows anyone with a basic Windows programming background to create dynamic, scalable OpenGL applications. Specializing in 3D bathymetry, the Contour SDK gives every programmer the edge he needs to render convincing terrain, whether below or above sea level. You can see the first generation of the Contour SDK at work in Maptech's Contour Professional software. The SDK will be available for licensing soon!