Function graticule

docs/app/js/sanddance-app.js:133269–133386

()

    };
}
function graticule() {
    var x1, x0, X1, X0, y1, y0, Y1, Y0, dx = 10, dy = dx, DX = 90, DY = 360, x3, y3, X, Y, precision = 2.5;
    function graticule1() {
        return {
            type: "MultiLineString",
            coordinates: lines()
        };
    }
    function lines() {
        return (0, _d3Array.range)((0, _mathJs.ceil)(X0 / DX) * DX, X1, DX).map(X).concat((0, _d3Array.range)((0, _mathJs.ceil)(Y0 / DY) * DY, Y1, DY).map(Y)).concat((0, _d3Array.range)((0, _mathJs.ceil)(x0 / dx) * dx, x1, dx).filter(function(x) {
            return (0, _mathJs.abs)(x % DX) > (0, _mathJs.epsilon);
        }).map(x3)).concat((0, _d3Array.range)((0, _mathJs.ceil)(y0 / dy) * dy, y1, dy).filter(function(y) {
            return (0, _mathJs.abs)(y % DY) > (0, _mathJs.epsilon);
        }).map(y3));
    }
    graticule1.lines = function() {
        return lines().map(function(coordinates) {
            return {
                type: "LineString",
                coordinates: coordinates
            };
        });
    };
    graticule1.outline = function() {
        return {
            type: "Polygon",
            coordinates: [
                X(X0).concat(Y(Y1).slice(1), X(X1).reverse().slice(1), Y(Y0).reverse().slice(1))
            ]
        };
    };
    graticule1.extent = function(_) {
        if (!arguments.length) return graticule1.extentMinor();
        return graticule1.extentMajor(_).extentMinor(_);
    };
    graticule1.extentMajor = function(_) {
        if (!arguments.length) return [
            [
                X0,
                Y0
            ],
            [
                X1,
                Y1
            ]
        ];
        X0 = +_[0][0], X1 = +_[1][0];
        Y0 = +_[0][1], Y1 = +_[1][1];
        if (X0 > X1) _ = X0, X0 = X1, X1 = _;
        if (Y0 > Y1) _ = Y0, Y0 = Y1, Y1 = _;
        return graticule1.precision(precision);
    };
    graticule1.extentMinor = function(_) {
        if (!arguments.length) return [
            [
                x0,
                y0
            ],