Blend at Edges of Cartographic Polygon


Is it possible, and is there an example of how to create a blend at the edges of the cartographic polygon so that the transition between the manually built site and the Google-generated stuff is less harsh?



I’m not aware of any way to do that. The cartographic polygon clipping works by using the “opacity mask” output of an Unreal Material, which only allows ON/OFF. Even if we could do alpha blending, I don’t think it would work very well here (and the usual depth ordering concerns with alpha blending geometry would apply). Your best bet - though I realize it’s a fair bit of work - might be to manually create a blend region, either as part of the manually built site or as a third model.

Thanks, Kevin!