Level of Detail for scenery, specifically airports

User Support Hub SDK
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Thanks for the reply. Looking at the sample aircraft file, it seems that we actually decide when each LOD is used based on the bounding box height as a percentage of screen height, so you are definitely on the right track.

From the sample file:

	<!-- minimum display size in % (should be bounding sphere vertical screen size, sphere will often be slightly larger than you expect) -->
	<!-- default minSize is 0 -->
	<LOD minSize="50" ModelFile="SimpleAircraft_LOD00.gltf"/>
	<LOD minSize="20" ModelFile="SimpleAircraft_LOD01.gltf"/>
	<LOD minSize="10" ModelFile="SimpleAircraft_LOD02.gltf"/>
	<LOD minSize="5" ModelFile="SimpleAircraft_LOD03.gltf"/>
	<LOD minSize="1" ModelFile="SimpleAircraft_LOD04.gltf"/>

Correct.