Esri / i3s-spec

This repository hosts the specification for Scene Layers which are containers for arbitrarily large amounts of geographic data. The delivery and persistence model for Scene Layers, referred to as Indexed 3d Scene Layer (I3S) and Scene Layer Package (SLPK) respectively, are specified.
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Potential ambiguity between spatialReference and indexCRS/vertexCRS #149

Open danme74 opened 2 years ago

danme74 commented 2 years ago

I find the potential ambiguity between spatialReference and indexCRS/vertexCRS disturbing (v1.8 and prior). What is the purpose of having the same information in multiple places?

Both indexCRS and vertexCRS "needs to be identical to the spatial reference" according to specification. Doesn't that imply indexCRS == vertexCRS? So what is the purpose of having both?

Thanks.