Function getLayoutPolygons

src/components/selections/select.js:1350–1445

(gd, onlyActiveOnes)

}

function getLayoutPolygons(gd, onlyActiveOnes) {
    var allPolygons = [];

    var fullLayout = gd._fullLayout;
    var allSelections = fullLayout.selections;
    var len = allSelections.length;

    for(var i = 0; i < len; i++) {
        if(onlyActiveOnes && i !== fullLayout._activeSelectionIndex) continue;

        var selection = allSelections[i];
        if(!selection) continue;

        var xref = selection.xref;
        var yref = selection.yref;

        var xaxis = getFromId(gd, xref, 'x');
        var yaxis = getFromId(gd, yref, 'y');

        var xmin, xmax, ymin, ymax;

        var polygon;
        if(selection.type === 'rect') {
            polygon = [];

            var x0 = convert(xaxis, selection.x0);
            var x1 = convert(xaxis, selection.x1);
            var y0 = convert(yaxis, selection.y0);
            var y1 = convert(yaxis, selection.y1);
            polygon = [[x0, y0], [x0, y1], [x1, y1], [x1, y0]];

            xmin = Math.min(x0, x1);
            xmax = Math.max(x0, x1);
            ymin = Math.min(y0, y1);
            ymax = Math.max(y0, y1);

            polygon.xmin = xmin;
            polygon.xmax = xmax;
            polygon.ymin = ymin;
            polygon.ymax = ymax;

            polygon.xref = xref;
            polygon.yref = yref;

            polygon.subtract = false;
            polygon.isRect = true;

            allPolygons.push(polygon);
        } else if(selection.type === 'path') {
            var segments = selection.path.split('Z');

            var multiPolygons = [];
            for(var j = 0; j < segments.length; j++) {
                var path = segments[j];
                if(!path) continue;
                path += 'Z';

                var allX = shapeHelpers.extractPathCoords(path, shapeConstants.paramIsX, 'raw');