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Viewing file:     points.js (3.29 KB)      -rw-r--r--

/*
* 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 */

import {map} from 'zrender/src/core/util';
import createRenderPlanner from '../chart/helper/createRenderPlanner';
import {isDimensionStacked} from '../data/helper/dataStackHelper';

export default function (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};
        }
    };
}