Function countDescendants

src/traces/sunburst/calc.js:295–319

(node, trace, opts)

};

function countDescendants(node, trace, opts) {
    var nChild = 0;

    var children = node.children;
    if(children) {
        var len = children.length;

        for(var i = 0; i < len; i++) {
            nChild += countDescendants(children[i], trace, opts);
        }

        if(opts.branches) nChild++; // count this branch
    } else {
        if(opts.leaves) nChild++; // count this leaf
    }

    // save to the node
    node.value = node.data.data.value = nChild;

    // save to the trace
    if(!trace._values) trace._values = [];
    trace._values[node.data.data.i] = nChild;

    return nChild;
}