project/node_modules/echarts/lib/chart/line/helper.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 { isDimensionStacked } from '../../data/helper/dataStackHelper.js';
import { isNumber, map } from 'zrender/lib/core/util.js';
export function prepareDataCoordInfo(coordSys, data, valueOrigin) {
  var baseAxis = coordSys.getBaseAxis();
  var valueAxis = coordSys.getOtherAxis(baseAxis);
  var valueStart = getValueStart(valueAxis, valueOrigin);
  var baseAxisDim = baseAxis.dim;
  var valueAxisDim = valueAxis.dim;
  var valueDim = data.mapDimension(valueAxisDim);
  var baseDim = data.mapDimension(baseAxisDim);
  var baseDataOffset = valueAxisDim === 'x' || valueAxisDim === 'radius' ? 1 : 0;
  var dims = map(coordSys.dimensions, function (coordDim) {
    return data.mapDimension(coordDim);
  });
  var stacked = false;
  var stackResultDim = data.getCalculationInfo('stackResultDimension');
  if (isDimensionStacked(data, dims[0] /* , dims[1] */)) {
    // jshint ignore:line
    stacked = true;
    dims[0] = stackResultDim;
  }
  if (isDimensionStacked(data, dims[1] /* , dims[0] */)) {
    // jshint ignore:line
    stacked = true;
    dims[1] = stackResultDim;
  }
  return {
    dataDimsForPoint: dims,
    valueStart: valueStart,
    valueAxisDim: valueAxisDim,
    baseAxisDim: baseAxisDim,
    stacked: !!stacked,
    valueDim: valueDim,
    baseDim: baseDim,
    baseDataOffset: baseDataOffset,
    stackedOverDimension: data.getCalculationInfo('stackedOverDimension')
  };
}
function getValueStart(valueAxis, valueOrigin) {
  var valueStart = 0;
  var extent = valueAxis.scale.getExtent();
  if (valueOrigin === 'start') {
    valueStart = extent[0];
  } else if (valueOrigin === 'end') {
    valueStart = extent[1];
  }
  // If origin is specified as a number, use it as
  // valueStart directly
  else if (isNumber(valueOrigin) && !isNaN(valueOrigin)) {
    valueStart = valueOrigin;
  }
  // auto
  else {
    // Both positive
    if (extent[0] > 0) {
      valueStart = extent[0];
    }
    // Both negative
    else if (extent[1] < 0) {
      valueStart = extent[1];
    }
    // If is one positive, and one negative, onZero shall be true
  }

  return valueStart;
}
export function getStackedOnPoint(dataCoordInfo, coordSys, data, idx) {
  var value = NaN;
  if (dataCoordInfo.stacked) {
    value = data.get(data.getCalculationInfo('stackedOverDimension'), idx);
  }
  if (isNaN(value)) {
    value = dataCoordInfo.valueStart;
  }
  var baseDataOffset = dataCoordInfo.baseDataOffset;
  var stackedData = [];
  stackedData[baseDataOffset] = data.get(dataCoordInfo.baseDim, idx);
  stackedData[1 - baseDataOffset] = value;
  return coordSys.dataToPoint(stackedData);
}