threePointDepthTestDistance
The distance from the camera, within which, labels with a Label.heightReference value of HeightReference.CLAMP_TO_GROUND or HeightReference.CLAMP_TO_TERRAIN are depth tested against three key points. This ensures that if any key point of the label is visible, the whole label will be visible. When set to 0, this feature is disabled and portions of a label behind terrain be clipped.
This setting only applies when a labels's Label.disableDepthTestDistance value would otherwise allow depth testing—i.e., distance from the camera to the label is less than the labels's Label.disableDepthTestDistance value.