Function extractArcs

docs/app/js/sanddance-app.js:109560–109602

(topology, object, filter)

    };
}
function extractArcs(topology, object, filter) {
    var arcs1 = [], geomsByArc = [], geom;
    function extract0(i) {
        var j = i < 0 ? ~i : i;
        (geomsByArc[j] || (geomsByArc[j] = [])).push({
            i: i,
            g: geom
        });
    }
    function extract1(arcs) {
        arcs.forEach(extract0);
    }
    function extract2(arcs) {
        arcs.forEach(extract1);
    }
    function extract3(arcs) {
        arcs.forEach(extract2);
    }
    function geometry(o) {
        switch(geom = o, o.type){
            case "GeometryCollection":
                o.geometries.forEach(geometry);
                break;
            case "LineString":
                extract1(o.arcs);
                break;
            case "MultiLineString":
            case "Polygon":
                extract2(o.arcs);
                break;
            case "MultiPolygon":
                extract3(o.arcs);
                break;
        }
    }
    geometry(object);
    geomsByArc.forEach(filter == null ? function(geoms) {
        arcs1.push(geoms[0].i);
    } : function(geoms) {
        if (filter(geoms[0].g, geoms[geoms.length - 1].g)) arcs1.push(geoms[0].i);
    });
    return arcs1;
}

},{"./feature.js":"92SRL","./stitch.js":"kAWIL","@parcel/transformer-js/src/esmodule-helpers.js":"jA2du"}],"kAWIL":[function(require,module,exports) {
var parcelHelpers = require("@parcel/transformer-js/src/esmodule-helpers.js");