import “../math/trigonometry”;
function d3_geo_spherical(cartesian) {
return [ Math.atan2(cartesian[1], cartesian[0]), d3_asin(cartesian[2]) ];
}
function d3_geo_sphericalEqual(a, b) {
return Math.abs(a[0] - b[0]) < ε && Math.abs(a[1] - b[1]) < ε;
}