project/node_modules/echarts/lib/chart/line/lineAnimationDiff.js

/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements.  See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership.  The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License.  You may obtain a copy of the License at
*
*   http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied.  See the License for the
* specific language governing permissions and limitations
* under the License.
*/


/**
 * AUTO-GENERATED FILE. DO NOT MODIFY.
 */

/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements.  See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership.  The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License.  You may obtain a copy of the License at
*
*   http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied.  See the License for the
* specific language governing permissions and limitations
* under the License.
*/
import { prepareDataCoordInfo, getStackedOnPoint } from './helper.js';
import { createFloat32Array } from '../../util/vendor.js';
function diffData(oldData, newData) {
  var diffResult = [];
  newData.diff(oldData).add(function (idx) {
    diffResult.push({
      cmd: '+',
      idx: idx
    });
  }).update(function (newIdx, oldIdx) {
    diffResult.push({
      cmd: '=',
      idx: oldIdx,
      idx1: newIdx
    });
  }).remove(function (idx) {
    diffResult.push({
      cmd: '-',
      idx: idx
    });
  }).execute();
  return diffResult;
}
export default function lineAnimationDiff(oldData, newData, oldStackedOnPoints, newStackedOnPoints, oldCoordSys, newCoordSys, oldValueOrigin, newValueOrigin) {
  var diff = diffData(oldData, newData);
  // let newIdList = newData.mapArray(newData.getId);
  // let 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);
  // const oldDataNewCoordInfo = prepareDataCoordInfo(newCoordSys, oldData, newValueOrigin);
  var oldPoints = oldData.getLayout('points') || [];
  var newPoints = newData.getLayout('points') || [];
  for (var i = 0; i < diff.length; i++) {
    var diffItem = diff[i];
    var pointAdded = true;
    var oldIdx2 = void 0;
    var newIdx2 = void 0;
    // 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 '=':
        oldIdx2 = diffItem.idx * 2;
        newIdx2 = diffItem.idx1 * 2;
        var currentX = oldPoints[oldIdx2];
        var currentY = oldPoints[oldIdx2 + 1];
        var nextX = newPoints[newIdx2];
        var nextY = newPoints[newIdx2 + 1];
        // If previous data is NaN, use next point directly
        if (isNaN(currentX) || isNaN(currentY)) {
          currentX = nextX;
          currentY = nextY;
        }
        currPoints.push(currentX, currentY);
        nextPoints.push(nextX, nextY);
        currStackedPoints.push(oldStackedOnPoints[oldIdx2], oldStackedOnPoints[oldIdx2 + 1]);
        nextStackedPoints.push(newStackedOnPoints[newIdx2], newStackedOnPoints[newIdx2 + 1]);
        rawIndices.push(newData.getRawIndex(diffItem.idx1));
        break;
      case '+':
        var newIdx = diffItem.idx;
        var newDataDimsForPoint = newDataOldCoordInfo.dataDimsForPoint;
        var oldPt = oldCoordSys.dataToPoint([newData.get(newDataDimsForPoint[0], newIdx), newData.get(newDataDimsForPoint[1], newIdx)]);
        newIdx2 = newIdx * 2;
        currPoints.push(oldPt[0], oldPt[1]);
        nextPoints.push(newPoints[newIdx2], newPoints[newIdx2 + 1]);
        var stackedOnPoint = getStackedOnPoint(newDataOldCoordInfo, oldCoordSys, newData, newIdx);
        currStackedPoints.push(stackedOnPoint[0], stackedOnPoint[1]);
        nextStackedPoints.push(newStackedOnPoints[newIdx2], newStackedOnPoints[newIdx2 + 1]);
        rawIndices.push(newData.getRawIndex(newIdx));
        break;
      case '-':
        pointAdded = false;
    }
    // Original indices
    if (pointAdded) {
      status.push(diffItem);
      sortedIndices.push(sortedIndices.length);
    }
  }
  // Diff result may be crossed if all items are changed
  // Sort by data index
  sortedIndices.sort(function (a, b) {
    return rawIndices[a] - rawIndices[b];
  });
  var len = currPoints.length;
  var sortedCurrPoints = createFloat32Array(len);
  var sortedNextPoints = createFloat32Array(len);
  var sortedCurrStackedPoints = createFloat32Array(len);
  var sortedNextStackedPoints = createFloat32Array(len);
  var sortedStatus = [];
  for (var i = 0; i < sortedIndices.length; i++) {
    var idx = sortedIndices[i];
    var i2 = i * 2;
    var idx2 = idx * 2;
    sortedCurrPoints[i2] = currPoints[idx2];
    sortedCurrPoints[i2 + 1] = currPoints[idx2 + 1];
    sortedNextPoints[i2] = nextPoints[idx2];
    sortedNextPoints[i2 + 1] = nextPoints[idx2 + 1];
    sortedCurrStackedPoints[i2] = currStackedPoints[idx2];
    sortedCurrStackedPoints[i2 + 1] = currStackedPoints[idx2 + 1];
    sortedNextStackedPoints[i2] = nextStackedPoints[idx2];
    sortedNextStackedPoints[i2 + 1] = nextStackedPoints[idx2 + 1];
    sortedStatus[i] = status[idx];
  }
  return {
    current: sortedCurrPoints,
    next: sortedNextPoints,
    stackedOnCurrent: sortedCurrStackedPoints,
    stackedOnNext: sortedNextStackedPoints,
    status: sortedStatus
  };
}