@Override
    public void write(JmeExporter ex) throws IOException {
        super.write(ex);
    }
Get the triangle that the point is on.

@param x coordinate in local space to the geomap
@param z coordinate in local space to the geomap
@return triangle in local space to the geomap
jme3-terrain/src/main/java/com/jme3/terrain/geomipmap/LODGeomap.java