FoveatedInterpolationCallback
Optimization option. Used as a callback when Cesium3DTileset.foveatedScreenSpaceError is true to control how much to raise the screen space error for tiles outside the foveated cone, interpolating between Cesium3DTileset.foveatedMinimumScreenSpaceErrorRelaxation and Cesium3DTileset.maximumScreenSpaceError.
Parameters
p
The start value to interpolate.
q
The end value to interpolate.
time
The time of interpolation generally in the range [0.0, 1.0].