Function mergePolygons

src/components/selections/select.js:1019–1039

(list, poly, subtract)

}

function mergePolygons(list, poly, subtract) {
    var fn = subtract ?
        polybool.difference :
        polybool.union;

    var res = fn({
        regions: list
    }, {
        regions: [poly]
    });

    var allPolygons = res.regions.reverse();

    for(var i = 0; i < allPolygons.length; i++) {
        var polygon = allPolygons[i];

        polygon.subtract = getSubtract(polygon, allPolygons.slice(0, i));
    }

    return allPolygons;
}

function fillSelectionItem(selection, searchInfo) {
    if(Array.isArray(selection)) {