en/builder/src/echarts3/coord/cartesian/Cartesian.js

/**
 * Cartesian coordinate system
 * @module  echarts/coord/Cartesian
 *
 */
import * as zrUtil from 'zrender/src/core/util';

function dimAxisMapper(dim) {
  return this._axes[dim];
}
/**
 * @alias module:echarts/coord/Cartesian
 * @constructor
 */


var Cartesian = function (name) {
  this._axes = {};
  this._dimList = [];
  /**
   * @type {string}
   */

  this.name = name || '';
};

Cartesian.prototype = {
  constructor: Cartesian,
  type: 'cartesian',

  /**
   * Get axis
   * @param  {number|string} dim
   * @return {module:echarts/coord/Cartesian~Axis}
   */
  getAxis: function (dim) {
    return this._axes[dim];
  },

  /**
   * Get axes list
   * @return {Array.<module:echarts/coord/Cartesian~Axis>}
   */
  getAxes: function () {
    return zrUtil.map(this._dimList, dimAxisMapper, this);
  },

  /**
   * Get axes list by given scale type
   */
  getAxesByScale: function (scaleType) {
    scaleType = scaleType.toLowerCase();
    return zrUtil.filter(this.getAxes(), function (axis) {
      return axis.scale.type === scaleType;
    });
  },

  /**
   * Add axis
   * @param {module:echarts/coord/Cartesian.Axis}
   */
  addAxis: function (axis) {
    var dim = axis.dim;
    this._axes[dim] = axis;

    this._dimList.push(dim);
  },

  /**
   * Convert data to coord in nd space
   * @param {Array.<number>|Object.<string, number>} val
   * @return {Array.<number>|Object.<string, number>}
   */
  dataToCoord: function (val) {
    return this._dataCoordConvert(val, 'dataToCoord');
  },

  /**
   * Convert coord in nd space to data
   * @param  {Array.<number>|Object.<string, number>} val
   * @return {Array.<number>|Object.<string, number>}
   */
  coordToData: function (val) {
    return this._dataCoordConvert(val, 'coordToData');
  },
  _dataCoordConvert: function (input, method) {
    var dimList = this._dimList;
    var output = input instanceof Array ? [] : {};

    for (var i = 0; i < dimList.length; i++) {
      var dim = dimList[i];
      var axis = this._axes[dim];
      output[dim] = axis[method](input[dim]);
    }

    return output;
  }
};
export default Cartesian;