Resolves polygon features to ECEF label anchors at each exterior-ring centroid — so a park /
building can carry a name label even though it isn't a point feature. The anchor sits at the
roof height for an extruded polygon (else the base), plus labelHeightOffset.
Resolves polygon features to ECEF label anchors at each exterior-ring centroid — so a park / building can carry a name label even though it isn't a point feature. The anchor sits at the roof height for an extruded polygon (else the base), plus
labelHeightOffset.