test/map-projection-animation.html - master - githubmirror/echarts

test/map-projection-animation.html
234 строки8 KB
Ovilia
test: change cdn to unpkg
09 июн 2022, 12:32
09 июн 2022, 12:323a5edc2
<!DOCTYPE html>
<!--
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
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   http://www.apache.org/licenses/LICENSE-2.0

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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.
-->


<html>
    <head>
        <meta charset="utf-8">
        <meta name="viewport" content="width=device-width, initial-scale=1" />
        <script src="https://unpkg.com/d3-array@3"></script>
        <script src="https://unpkg.com/d3-geo@3/dist/d3-geo.js"></script>

        <script src="lib/simpleRequire.js"></script>
        <script src="lib/config.js"></script>
        <script src="lib/jquery.min.js"></script>
        <script src="lib/facePrint.js"></script>
        <script src="lib/testHelper.js"></script>
        <script src="lib/dat.gui.min.js"></script>

        <!-- <script src="ut/lib/canteen.js"></script> -->
        <link rel="stylesheet" href="lib/reset.css" />
    </head>
    <body>
        <style>
            body {
                margin: 0;
            }
            #main {
                position: absolute;
                left: 0;
                top: 0;
                bottom: 0;
                right: 0;
            }
        </style>



        <div id="main"></div>






        <script>
        require([
            'echarts',
            './data/map/json/world.json',
            './data/usa.json'
        ], function (echarts, worldJson, usaJson) {

            var d3Projections =  [
                ['default'],
                // Azimuthal Projections
                ['geoAzimuthalEqualArea'],
                ['geoAzimuthalEquidistant'],
                // 'geoGnomonic',
                ['geoOrthographic'],
                ['geoStereographic', d3.geoStereographic().rotate([-27, 0])],


                // Conic Projections
                ['geoConicConformal'],
                ['geoConicEqualArea'],
                ['geoConicEquidistant'],

                // Cylindrical Projections
                ['geoEquirectangular'],
                ['geoMercator'],
                ['geoTransverseMercator', d3.geoStereographic()],
                // Equal-Earth
                ['geoEqualEarth'],
                ['geoNaturalEarth1']
            ];

            function createLineString(start, end) {
                var dx = end[0] - start[0];
                var dy = end[1] - start[1];
                var segs = 100;
                var stepX = dx / segs;
                var stepY = dy / segs;
                var points = [];
                // TODO needs adaptive sampling on the -180 / 180 of azimuthal projections.
                for (let i = 0; i <= segs; i++) {
                    points.push([
                        start[0] + i * stepX,
                        start[1] + i * stepY
                    ]);
                }
                return points;
            }
            function normalizePoint(pt) {
                if (pt[0] === -180) {
                    pt[0] += 1e-2;
                }
                if (pt[0] === 180) {
                    pt[0] -= 1e-2;
                }
                if (pt[1] === -80) {
                    pt[1] += 1e-2;
                }
                if (pt[1] === 80) {
                    pt[1] -= 1e-2;
                }
                return pt;
            }
            // Add graticule
            var graticuleLineStrings = [];
            for (var lat = -80; lat <= 80; lat += 10) {
                graticuleLineStrings.push(
                    createLineString(normalizePoint([-180, lat]), normalizePoint([180, lat]))
                );
            }
            for (var lng = -180; lng <= 180; lng += 10) {
                graticuleLineStrings.push(
                    createLineString(normalizePoint([lng, -80]), normalizePoint([lng, 80]))
                );
            }

            worldJson.features.unshift({
                geometry: {
                    type: 'MultiLineString',
                    coordinates: graticuleLineStrings
                },
                properties: {
                    name: 'graticule'
                }
            });


            echarts.registerMap('world', worldJson);

            function createWorldOption(name, projection) {
                return {
                    series : [
                        {
                            type: 'map',
                            map: 'world',
                            roam: false,
                            itemStyle: {
                                borderColor: '#fff',
                                areaColor: '#000'
                            },
                            projection,
                            universalTransition: true,
                            animationDurationUpdate: 2000,
                            data:[
                                {
                                    name: 'graticule',
                                    itemStyle: {
                                        borderColor: '#ddd'
                                    },
                                    emphasis: {
                                        itemStyle: {
                                            borderColor: '#ddd'
                                        }
                                    }
                                }
                            ]
                        }
                    ]
                };
            }

            var chart = echarts.init(document.querySelector('#main'));

            var config = {
                projection: 'default'
            };

            function updateProjection(projectionName) {
                var projection = d3Projections.find(item => item[0] === projectionName)[1]
                    || d3[projectionName] && d3[projectionName]();
                var projectionOpt = projection && {
                    project: (pt) => {
                        return projection(pt)
                    },
                    unproject: (pt) => projection.invert(pt),
                    stream: projection.stream
                };
                var option = createWorldOption(projectionName, projectionOpt);
                if (projectionName === 'geoStereographic') {
                    // TODO
                    option.series[0].center = projection([0, 0]);
                    option.series[0].zoom = 30;
                }
                else if (projectionName === 'geoTransverseMercator') {
                    option.series[0].center = projection([0, 0]);
                    option.series[0].zoom = 4000;
                }
                else {
                    option.series[0].center = null,
                    option.series[0].zoom = 1;
                }
                option.title = {
                    text: projectionName,
                    left: 'center',
                    top: 0,
                    textStyle: {
                        fontSize: 14
                    }
                };
                chart.setOption(option);
            }

            updateProjection(config.projection);

            var gui = new dat.GUI();
            gui.add(config, 'projection',  d3Projections.map(item => item[0])).onChange(function () {
                updateProjection(config.projection);
            })
        });
        </script>


    </body>
</html>