RadarView.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.
*/

var _config = require("../../config");

var __DEV__ = _config.__DEV__;

var echarts = require("../../echarts");

var zrUtil = require("zrender/lib/core/util");

var AxisBuilder = require("../axis/AxisBuilder");

var graphic = require("../../util/graphic");

/*
* 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 axisBuilderAttrs = ['axisLine', 'axisTickLabel', 'axisName'];

var _default = echarts.extendComponentView({
  type: 'radar',
  render: function (radarModel, ecModel, api) {
    var group = this.group;
    group.removeAll();

    this._buildAxes(radarModel);

    this._buildSplitLineAndArea(radarModel);
  },
  _buildAxes: function (radarModel) {
    var radar = radarModel.coordinateSystem;
    var indicatorAxes = radar.getIndicatorAxes();
    var axisBuilders = zrUtil.map(indicatorAxes, function (indicatorAxis) {
      var axisBuilder = new AxisBuilder(indicatorAxis.model, {
        position: [radar.cx, radar.cy],
        rotation: indicatorAxis.angle,
        labelDirection: -1,
        tickDirection: -1,
        nameDirection: 1
      });
      return axisBuilder;
    });
    zrUtil.each(axisBuilders, function (axisBuilder) {
      zrUtil.each(axisBuilderAttrs, axisBuilder.add, axisBuilder);
      this.group.add(axisBuilder.getGroup());
    }, this);
  },
  _buildSplitLineAndArea: function (radarModel) {
    var radar = radarModel.coordinateSystem;
    var indicatorAxes = radar.getIndicatorAxes();

    if (!indicatorAxes.length) {
      return;
    }

    var shape = radarModel.get('shape');
    var splitLineModel = radarModel.getModel('splitLine');
    var splitAreaModel = radarModel.getModel('splitArea');
    var lineStyleModel = splitLineModel.getModel('lineStyle');
    var areaStyleModel = splitAreaModel.getModel('areaStyle');
    var showSplitLine = splitLineModel.get('show');
    var showSplitArea = splitAreaModel.get('show');
    var splitLineColors = lineStyleModel.get('color');
    var splitAreaColors = areaStyleModel.get('color');
    splitLineColors = zrUtil.isArray(splitLineColors) ? splitLineColors : [splitLineColors];
    splitAreaColors = zrUtil.isArray(splitAreaColors) ? splitAreaColors : [splitAreaColors];
    var splitLines = [];
    var splitAreas = [];

    function getColorIndex(areaOrLine, areaOrLineColorList, idx) {
      var colorIndex = idx % areaOrLineColorList.length;
      areaOrLine[colorIndex] = areaOrLine[colorIndex] || [];
      return colorIndex;
    }

    if (shape === 'circle') {
      var ticksRadius = indicatorAxes[0].getTicksCoords();
      var cx = radar.cx;
      var cy = radar.cy;

      for (var i = 0; i < ticksRadius.length; i++) {
        if (showSplitLine) {
          var colorIndex = getColorIndex(splitLines, splitLineColors, i);
          splitLines[colorIndex].push(new graphic.Circle({
            shape: {
              cx: cx,
              cy: cy,
              r: ticksRadius[i].coord
            }
          }));
        }

        if (showSplitArea && i < ticksRadius.length - 1) {
          var colorIndex = getColorIndex(splitAreas, splitAreaColors, i);
          splitAreas[colorIndex].push(new graphic.Ring({
            shape: {
              cx: cx,
              cy: cy,
              r0: ticksRadius[i].coord,
              r: ticksRadius[i + 1].coord
            }
          }));
        }
      }
    } // Polyyon
    else {
        var realSplitNumber;
        var axesTicksPoints = zrUtil.map(indicatorAxes, function (indicatorAxis, idx) {
          var ticksCoords = indicatorAxis.getTicksCoords();
          realSplitNumber = realSplitNumber == null ? ticksCoords.length - 1 : Math.min(ticksCoords.length - 1, realSplitNumber);
          return zrUtil.map(ticksCoords, function (tickCoord) {
            return radar.coordToPoint(tickCoord.coord, idx);
          });
        });
        var prevPoints = [];

        for (var i = 0; i <= realSplitNumber; i++) {
          var points = [];

          for (var j = 0; j < indicatorAxes.length; j++) {
            points.push(axesTicksPoints[j][i]);
          } // Close


          if (points[0]) {
            points.push(points[0].slice());
          } else {}

          if (showSplitLine) {
            var colorIndex = getColorIndex(splitLines, splitLineColors, i);
            splitLines[colorIndex].push(new graphic.Polyline({
              shape: {
                points: points
              }
            }));
          }

          if (showSplitArea && prevPoints) {
            var colorIndex = getColorIndex(splitAreas, splitAreaColors, i - 1);
            splitAreas[colorIndex].push(new graphic.Polygon({
              shape: {
                points: points.concat(prevPoints)
              }
            }));
          }

          prevPoints = points.slice().reverse();
        }
      }

    var lineStyle = lineStyleModel.getLineStyle();
    var areaStyle = areaStyleModel.getAreaStyle(); // Add splitArea before splitLine

    zrUtil.each(splitAreas, function (splitAreas, idx) {
      this.group.add(graphic.mergePath(splitAreas, {
        style: zrUtil.defaults({
          stroke: 'none',
          fill: splitAreaColors[idx % splitAreaColors.length]
        }, areaStyle),
        silent: true
      }));
    }, this);
    zrUtil.each(splitLines, function (splitLines, idx) {
      this.group.add(graphic.mergePath(splitLines, {
        style: zrUtil.defaults({
          fill: 'none',
          stroke: splitLineColors[idx % splitLineColors.length]
        }, lineStyle),
        silent: true
      }));
    }, this);
  }
});

module.exports = _default;