src/js/libpannellum.js
function multiresNodeSort(a, b) {
        // Base tiles are always first
        if (a.level == 1 && b.level != 1) {
            return -1;
        }
        if (b. level == 1 && a.level != 1) {
            return 1;
        }
        
        // Higher timestamp first
        return b.timestamp - a.timestamp;
    }
function multiresNodeSort(a, b) {
        // Base tiles are always first
        if (a.level == 1 && b.level != 1) {
            return -1;
        }
        if (b. level == 1 && a.level != 1) {
            return 1;
        }
        
        // Higher timestamp first
        return b.timestamp - a.timestamp;
    }
Sorting method for multires nodes.
@private
@param {MultiresNode} a - First node.
@param {MultiresNode} b - Second node.
@returns {number} Base tiles first, then higher timestamp first.