scaleByDistance
Gets or sets near and far scaling properties of a Label based on the label's distance from the camera. A label's scale will interpolate between the NearFarScalar.nearValue and NearFarScalar.farValue while the camera distance falls within the lower and upper bounds of the specified NearFarScalar.near and NearFarScalar.far. Outside of these ranges the label's scale remains clamped to the nearest bound. If undefined, scaleByDistance will be disabled.