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node_modules/echarts/lib/layout/points.js 3.8 KB
aaac7fed   liuqimichale   add
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  /*
  * 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.
  */
  
  var _util = require("zrender/lib/core/util");
  
  var map = _util.map;
  
  var createRenderPlanner = require("../chart/helper/createRenderPlanner");
  
  var _dataStackHelper = require("../data/helper/dataStackHelper");
  
  var isDimensionStacked = _dataStackHelper.isDimensionStacked;
  
  /*
  * 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.
  */
  
  /* global Float32Array */
  function _default(seriesType) {
    return {
      seriesType: seriesType,
      plan: createRenderPlanner(),
      reset: function (seriesModel) {
        var data = seriesModel.getData();
        var coordSys = seriesModel.coordinateSystem;
        var pipelineContext = seriesModel.pipelineContext;
        var isLargeRender = pipelineContext.large;
  
        if (!coordSys) {
          return;
        }
  
        var dims = map(coordSys.dimensions, function (dim) {
          return data.mapDimension(dim);
        }).slice(0, 2);
        var dimLen = dims.length;
        var stackResultDim = data.getCalculationInfo('stackResultDimension');
  
        if (isDimensionStacked(data, dims[0]
        /*, dims[1]*/
        )) {
          dims[0] = stackResultDim;
        }
  
        if (isDimensionStacked(data, dims[1]
        /*, dims[0]*/
        )) {
          dims[1] = stackResultDim;
        }
  
        function progress(params, data) {
          var segCount = params.end - params.start;
          var points = isLargeRender && new Float32Array(segCount * dimLen);
  
          for (var i = params.start, offset = 0, tmpIn = [], tmpOut = []; i < params.end; i++) {
            var point;
  
            if (dimLen === 1) {
              var x = data.get(dims[0], i);
              point = !isNaN(x) && coordSys.dataToPoint(x, null, tmpOut);
            } else {
              var x = tmpIn[0] = data.get(dims[0], i);
              var y = tmpIn[1] = data.get(dims[1], i); // Also {Array.<number>}, not undefined to avoid if...else... statement
  
              point = !isNaN(x) && !isNaN(y) && coordSys.dataToPoint(tmpIn, null, tmpOut);
            }
  
            if (isLargeRender) {
              points[offset++] = point ? point[0] : NaN;
              points[offset++] = point ? point[1] : NaN;
            } else {
              data.setItemLayout(i, point && point.slice() || [NaN, NaN]);
            }
          }
  
          isLargeRender && data.setLayout('symbolPoints', points);
        }
  
        return dimLen && {
          progress: progress
        };
      }
    };
  }
  
  module.exports = _default;