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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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About maxScreenThreshold and screen size? #41

Closed intckarl closed 5 years ago

intckarl commented 5 years ago

How to define maxScreenThreshold? Is it pixel or dpi or something else?

What's the relation with diameter of the node's minimum bounding sphere?

jfoster126 commented 5 years ago

Hi @intckarl ,

The details for maxScreenThreshold and its relation to the MBS are in the lodSelection. Here is the text:

maxScreenThreshold: A per-node value for the maximum pixel size as measured in screen pixels. This value indicates the upper limit for the screen size of the diameter of the node's minimum bounding sphere (MBS). In other words, the content referenced by this node will qualify to be rendered only when the screen size is below the maximum screen threshold value. Used with the mesh pyramid profile.