Function castMultiPolygon

src/components/selections/select.js:1468–1483

(allPolygons)

}

function castMultiPolygon(allPolygons) {
    var len = allPolygons.length;

    // descibe multi polygons in one polygon
    var p = [];
    for(var i = 0; i < len; i++) {
        var polygon = allPolygons[i];
        p = p.concat(polygon);

        // add starting vertex to close
        // which indicates next polygon
        p = p.concat([polygon[0]]);
    }

    return computeRectAndRanges(p);
}

function computeRectAndRanges(poly) {
    poly.isRect = poly.length === 5 &&