Blend at Edges of Cartographic Polygon

Cesium for Unreal
1

Hi,

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?

Thanks,

Aidan

Cesium_Polygon_Blend_Question
Cesium_Polygon_Blend_Question1046×815 146 KB

2

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.

3

Thanks, Kevin!