src/chart/candlestick/candlestickLayout.js

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define(function (require) {

    var CANDLE_MIN_WIDTH = 2;
    var CANDLE_MIN_NICE_WIDTH = 5;
    var GPA_MIN = 4;

    return function (ecModel) {

        ecModel.eachSeriesByType('candlestick', function (seriesModel) {

            var coordSys = seriesModel.coordinateSystem;
            var data = seriesModel.getData();
            var dimensions = seriesModel.dimensions;
            var chartLayout = seriesModel.get('layout');

            var candleWidth = calculateCandleWidth(seriesModel, data);

            data.each(dimensions, function () {
                var args = arguments;
                var dimLen = dimensions.length;
                var axisDimVal = args[0];
                var idx = args[dimLen];
                var variableDim = chartLayout === 'horizontal' ? 0 : 1;
                var constDim = 1 - variableDim;

                var openVal = args[1];
                var closeVal = args[2];
                var lowestVal = args[3];
                var highestVal = args[4];

                var ocLow = Math.min(openVal, closeVal);
                var ocHigh = Math.max(openVal, closeVal);

                var ocLowPoint = getPoint(ocLow);
                var ocHighPoint = getPoint(ocHigh);
                var lowestPoint = getPoint(lowestVal);
                var highestPoint = getPoint(highestVal);

                var whiskerEnds = [
                    [highestPoint, ocHighPoint],
                    [lowestPoint, ocLowPoint]
                ];

                var bodyEnds = [];
                addBodyEnd(ocHighPoint, 0);
                addBodyEnd(ocLowPoint, 1);

                data.setItemLayout(idx, {
                    chartLayout: chartLayout,
                    sign: openVal > closeVal ? -1 : openVal < closeVal ? 1 : 0,
                    initBaseline: openVal > closeVal
                        ? ocHighPoint[constDim] : ocLowPoint[constDim], // open point.
                    bodyEnds: bodyEnds,
                    whiskerEnds: whiskerEnds,
                    brushRect: makeBrushRect()
                });

                function getPoint(val) {
                    var p = [];
                    p[variableDim] = axisDimVal;