Function getOrigin

src/traces/treemap/plot_one.js:104–115

(pt, onPathbar, refRect, size)

    };

    var getOrigin = function(pt, onPathbar, refRect, size) {
        if(onPathbar) {
            return prevLookupPathbar[getKey(hierarchy)] || pathbarOrigin;
        } else {
            var ref = prevLookupSlices[trace.level] || refRect;

            if(hasVisibleDepth(pt)) { // case of an empty object - happens when maxdepth is set
                return findClosestEdge(pt, ref, size);
            }
        }
        return {};
    };

    // N.B. handle multiple-root special case
    if(cd0.hasMultipleRoots && isRoot) {