Function plotOne

src/traces/sunburst/plot.js:85–521

(gd, cd, element, transitionOpts)

};

function plotOne(gd, cd, element, transitionOpts) {
    var isStatic = gd._context.staticPlot;

    var fullLayout = gd._fullLayout;
    var hasTransition = !fullLayout.uniformtext.mode && helpers.hasTransition(transitionOpts);

    var gTrace = d3.select(element);
    var slices = gTrace.selectAll('g.slice');

    var cd0 = cd[0];
    var trace = cd0.trace;
    var hierarchy = cd0.hierarchy;
    var entry = helpers.findEntryWithLevel(hierarchy, trace.level);
    var maxDepth = helpers.getMaxDepth(trace);

    var gs = fullLayout._size;
    var domain = trace.domain;
    var vpw = gs.w * (domain.x[1] - domain.x[0]);
    var vph = gs.h * (domain.y[1] - domain.y[0]);
    var rMax = 0.5 * Math.min(vpw, vph);
    var cx = (cd0.cx = gs.l + (gs.w * (domain.x[1] + domain.x[0])) / 2);
    var cy = (cd0.cy = gs.t + gs.h * (1 - domain.y[0]) - vph / 2);

    if (!entry) {
        return slices.remove();
    }

    // previous root 'pt' (can be empty)
    var prevEntry = null;
    // stash of 'previous' position data used by tweening functions
    var prevLookup = {};

    if (hasTransition) {
        // Important: do this before binding new sliceData!
        slices.each(function (pt) {
            prevLookup[helpers.getPtId(pt)] = {
                rpx0: pt.rpx0,
                rpx1: pt.rpx1,
                x0: pt.x0,
                x1: pt.x1,
                transform: pt.transform
            };

            if (!prevEntry && helpers.isEntry(pt)) {
                prevEntry = pt;
            }
        });
    }

    // N.B. slice data isn't the calcdata,
    // grab corresponding calcdata item in sliceData[i].data.data
    var sliceData = partition(entry).descendants();

    var maxHeight = entry.height + 1;
    var yOffset = 0;
    var cutoff = maxDepth;
    // N.B. handle multiple-root special case
    if (cd0.hasMultipleRoots && helpers.isHierarchyRoot(entry)) {