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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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LoD Selection structure #31

Closed Shtirlic81 closed 5 years ago

Shtirlic81 commented 5 years ago

Hi,

In the spec there are two fields: metricType and maxError, but in the explanation it is written that "Cookers can add as many LodSelection objects as desired, but must provide one as soon as the layer's lodType is not null. Of the three min/avg/max values, typically only one or two are used."

So as I understand, the cookers can add avgScreenThreshold as metricType and than the second filed will be avgError? Or you meant something else?

Thanks

jfoster126 commented 5 years ago

Hi @Shtirlic81,

We recently updated the doc for LOD Selection with more details about metricType and maxError. https://github.com/Esri/i3s-spec/blob/master/docs/1.7/lodSelection.cmn.md

Please let us know if you need more information. Thanks.

Shtirlic81 commented 5 years ago

Ok, thanks, it's mych more clearer.

I have only one question: Normalizaed distance its the distance of the node from the camera, divided by the distance of the camera from the origin?

jfoster126 commented 5 years ago

Hi @Shtirlic81,

Our apologies, the distanceRangeFromDefaultCamera is not normalized. It is the distance from the surface of the node's minimum bounding volume to the camera. We will update our documentation to reflect this. Thanks.

jfoster126 commented 5 years ago

Updated lod Selection metrics