does anyone have a method for warping the sand node so that it radiates outward, following the shape of the coast like in image B, rather than in a straight line across the map like in image A?
It looks as though the majority of this is done with the /distance node to create the push and then make it non-uniform and the /sand node using warp by terrain.
The goal with them is to create a stepped radial mask that feeds in to the /sand / /dunesea nodes.
you could also use /dunesea with /transpose as well then layer all three components together nearer the end; your mass with both sand types.
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