Function lineAnimationDiff

libs/echarts/echarts-en.simple.js:34119–34252

(
    oldData, newData,
    oldStackedOnPoints, newStackedOnPoints,
    oldCoordSys, newCoordSys,
    oldValueOrigin, newValueOrigin
)

}

var lineAnimationDiff = function (
    oldData, newData,
    oldStackedOnPoints, newStackedOnPoints,
    oldCoordSys, newCoordSys,
    oldValueOrigin, newValueOrigin
) {
    var diff = diffData(oldData, newData);

    // var newIdList = newData.mapArray(newData.getId);
    // var oldIdList = oldData.mapArray(oldData.getId);

    // convertToIntId(newIdList, oldIdList);

    // // FIXME One data ?
    // diff = arrayDiff(oldIdList, newIdList);

    var currPoints = [];
    var nextPoints = [];
    // Points for stacking base line
    var currStackedPoints = [];
    var nextStackedPoints = [];

    var status = [];
    var sortedIndices = [];
    var rawIndices = [];

    var newDataOldCoordInfo = prepareDataCoordInfo(oldCoordSys, newData, oldValueOrigin);
    var oldDataNewCoordInfo = prepareDataCoordInfo(newCoordSys, oldData, newValueOrigin);

    for (var i = 0; i < diff.length; i++) {
        var diffItem = diff[i];
        var pointAdded = true;

        // FIXME, animation is not so perfect when dataZoom window moves fast
        // Which is in case remvoing or add more than one data in the tail or head
        switch (diffItem.cmd) {
            case '=':
                var currentPt = oldData.getItemLayout(diffItem.idx);
                var nextPt = newData.getItemLayout(diffItem.idx1);
                // If previous data is NaN, use next point directly
                if (isNaN(currentPt[0]) || isNaN(currentPt[1])) {
                    currentPt = nextPt.slice();
                }
                currPoints.push(currentPt);
                nextPoints.push(nextPt);

                currStackedPoints.push(oldStackedOnPoints[diffItem.idx]);
                nextStackedPoints.push(newStackedOnPoints[diffItem.idx1]);

                rawIndices.push(newData.getRawIndex(diffItem.idx1));
                break;
            case '+':
                var idx = diffItem.idx;
                currPoints.push(
                    oldCoordSys.dataToPoint([
                        newData.get(newDataOldCoordInfo.dataDimsForPoint[0], idx),
                        newData.get(newDataOldCoordInfo.dataDimsForPoint[1], idx)
                    ])