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Validator - check that normals are unit length #112

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lilleyse opened this issue Jul 20, 2017 · 0 comments
Open

Validator - check that normals are unit length #112

lilleyse opened this issue Jul 20, 2017 · 0 comments

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@lilleyse
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@rms13

From the roadmap:

i3dm
If NORMAL_UP/NORMAL_RIGHT (or NORMAL_UP_OCT32P/NORMAL_RIGHT_OCT32P) are defined, verify that they are orthonormal.

pnts
If NORMAL/NORMAL_OCT16P are defined, verify they are of unit length.

Use the same Cesium3DTileFeatureTable object to extract the values. Look at https://github.com/AnalyticalGraphicsInc/cesium/blob/master/Source/Scene/Instanced3DModel3DTileContent.js#L363 for reading these values and converting the oct-encoded versions to regular numbers. (The OCT16P version will use a range of 255 instead of 65535 for octDecodeInRange)
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@lilleyse