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node_modules/echarts/lib/chart/lines/linesLayout.js 2.98 KB
2a09d1a4   liuqimichale   添加宜春 天水 宣化
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  var createRenderPlanner = require("../helper/createRenderPlanner");
  
  /*
  * 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 _default = {
    seriesType: 'lines',
    plan: createRenderPlanner(),
    reset: function (seriesModel) {
      var coordSys = seriesModel.coordinateSystem;
      var isPolyline = seriesModel.get('polyline');
      var isLarge = seriesModel.pipelineContext.large;
  
      function progress(params, lineData) {
        var lineCoords = [];
  
        if (isLarge) {
          var points;
          var segCount = params.end - params.start;
  
          if (isPolyline) {
            var totalCoordsCount = 0;
  
            for (var i = params.start; i < params.end; i++) {
              totalCoordsCount += seriesModel.getLineCoordsCount(i);
            }
  
            points = new Float32Array(segCount + totalCoordsCount * 2);
          } else {
            points = new Float32Array(segCount * 4);
          }
  
          var offset = 0;
          var pt = [];
  
          for (var i = params.start; i < params.end; i++) {
            var len = seriesModel.getLineCoords(i, lineCoords);
  
            if (isPolyline) {
              points[offset++] = len;
            }
  
            for (var k = 0; k < len; k++) {
              pt = coordSys.dataToPoint(lineCoords[k], false, pt);
              points[offset++] = pt[0];
              points[offset++] = pt[1];
            }
          }
  
          lineData.setLayout('linesPoints', points);
        } else {
          for (var i = params.start; i < params.end; i++) {
            var itemModel = lineData.getItemModel(i);
            var len = seriesModel.getLineCoords(i, lineCoords);
            var pts = [];
  
            if (isPolyline) {
              for (var j = 0; j < len; j++) {
                pts.push(coordSys.dataToPoint(lineCoords[j]));
              }
            } else {
              pts[0] = coordSys.dataToPoint(lineCoords[0]);
              pts[1] = coordSys.dataToPoint(lineCoords[1]);
              var curveness = itemModel.get('lineStyle.curveness');
  
              if (+curveness) {
                pts[2] = [(pts[0][0] + pts[1][0]) / 2 - (pts[0][1] - pts[1][1]) * curveness, (pts[0][1] + pts[1][1]) / 2 - (pts[1][0] - pts[0][0]) * curveness];
              }
            }
  
            lineData.setItemLayout(i, pts);
          }
        }
      }
  
      return {
        progress: progress
      };
    }
  };
  module.exports = _default;