I am looking for an engine / library / technic to implement a large scale 2D topographical map that will be used in an RTS game.
The closest I've been able to find is: http://stackoverflow.com/questions/263305/drawing-a-topographical-map which isn't exactly what I want..
Idealistically I'd like to have something that will give me similar result to "Google maps Terrain view", I will also need "Layers" just as with Google maps.
The game modules were originally written in Delphi but they are going to be rewritten, I don't have any programming language constraint.