A clipping plane anchored on the ellipsoid. Content on the side the normalEnu
points away from is hidden (matching Cesium: the normal points toward what is
kept). The normal is given in the local East–North–Up frame at the anchor, so e.g.
{ u: 1 } keeps everything above the anchor height (a horizontal floor cut) and
{ e: 1 } keeps everything east of the anchor (a vertical wall facing west).
A clipping plane anchored on the ellipsoid. Content on the side the
normalEnupoints away from is hidden (matching Cesium: the normal points toward what is kept). The normal is given in the local East–North–Up frame at the anchor, so e.g.{ u: 1 }keeps everything above the anchor height (a horizontal floor cut) and{ e: 1 }keeps everything east of the anchor (a vertical wall facing west).