c3_chart_internal_fn.redrawSubchart = function()

in TestApplications/Web/js/lib/components/c3-0.4.2/src/subchart.js [83:162]
68 lines of code
8 McCabe index (conditional complexity)

c3_chart_internal_fn.redrawSubchart = function (withSubchart, transitions, duration, durationForExit, areaIndices, barIndices, lineIndices) {
    var $$ = this, d3 = $$.d3, context = $$.context, config = $$.config,
        contextLine,  contextArea, contextBar, drawAreaOnSub, drawBarOnSub, drawLineOnSub,
        barData = $$.barData.bind($$),
        lineData = $$.lineData.bind($$),
        classBar = $$.classBar.bind($$),
        classLine = $$.classLine.bind($$),
        classArea = $$.classArea.bind($$),
        initialOpacity = $$.initialOpacity.bind($$);

    // subchart
    if (config.subchart_show) {
        // reflect main chart to extent on subchart if zoomed
        if (d3.event && d3.event.type === 'zoom') {
            $$.brush.extent($$.x.orgDomain()).update();
        }
        // update subchart elements if needed
        if (withSubchart) {

            // rotate tick text if needed
            if (!config.axis_rotated && config.axis_x_tick_rotate) {
                $$.rotateTickText($$.axes.subx, transitions.axisSubX, config.axis_x_tick_rotate);
            }

            // extent rect
            if (!$$.brush.empty()) {
                $$.brush.extent($$.x.orgDomain()).update();
            }
            // setup drawer - MEMO: this must be called after axis updated
            drawAreaOnSub = $$.generateDrawArea(areaIndices, true);
            drawBarOnSub = $$.generateDrawBar(barIndices, true);
            drawLineOnSub = $$.generateDrawLine(lineIndices, true);
            // bars
            contextBar = context.selectAll('.' + CLASS.bars).selectAll('.' + CLASS.bar)
                .data(barData);
            contextBar.enter().append('path')
                .attr("class", classBar)
                .style("stroke", 'none')
                .style("fill", $$.color);
            contextBar
                .style("opacity", initialOpacity)
                .transition().duration(duration)
                .attr('d', drawBarOnSub)
                .style('opacity', 1);
            contextBar.exit().transition().duration(duration)
                .style('opacity', 0)
                .remove();
            // lines
            contextLine = context.selectAll('.' + CLASS.lines).selectAll('.' + CLASS.line)
                .data(lineData);
            contextLine.enter().append('path')
                .attr('class', classLine)
                .style('stroke', $$.color);
            contextLine
                .style("opacity", initialOpacity)
                .transition().duration(duration)
                .attr("d", drawLineOnSub)
                .style('opacity', 1);
            contextLine.exit().transition().duration(duration)
                .style('opacity', 0)
                .remove();
            // area
            contextArea = context.selectAll('.' + CLASS.areas).selectAll('.' + CLASS.area)
                .data(lineData);
            contextArea.enter().append('path')
                .attr("class", classArea)
                .style("fill", $$.color)
                .style("opacity", function () { $$.orgAreaOpacity = +d3.select(this).style('opacity'); return 0; });
            contextArea
                .style("opacity", 0)
                .transition().duration(duration)
                .attr("d", drawAreaOnSub)
                .style("fill", $$.color)
                .style("opacity", $$.orgAreaOpacity);
            contextArea.exit().transition().duration(durationForExit)
                .style('opacity', 0)
                .remove();
        }
    }
};