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MapboxGL & D3.js - polygon
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| <!DOCTYPE html> | |
| <head> | |
| <meta charset="utf-8"> | |
| <meta name='viewport' content='initial-scale=1,maximum-scale=1,user-scalable=no' /> | |
| <title>MapboxGL & D3.js - dpolygon</title> | |
| <link href='https://api.tiles.mapbox.com/mapbox-gl-js/v0.52.0/mapbox-gl.css' rel='stylesheet' /> | |
| <style> | |
| html, body, #wrapper { | |
| width: 100%; | |
| height: 100%; | |
| padding: 0px; | |
| margin: 0px; | |
| } | |
| #map { | |
| position:relative; | |
| width: 100%; | |
| height: 100%; | |
| margin: auto auto; | |
| } | |
| svg { | |
| position: absolute; | |
| width: 100%; | |
| height: 100%; | |
| } | |
| .hidden { | |
| display: none; | |
| } | |
| </style> | |
| </head> | |
| <body> | |
| <div id="wrapper"> | |
| <div id="map"></div> | |
| </div> | |
| <script src='//unpkg.com/d3@5.0.0/dist/d3.min.js'></script> | |
| <script src='https://api.tiles.mapbox.com/mapbox-gl-js/v0.52.0/mapbox-gl.js'></script> | |
| <script> | |
| d3.json("ken.geojson").then(mapDraw); | |
| function mapDraw(geojson){ | |
| //mapboxgs トークン | |
| mapboxgl.accessToken = 'pk.eyJ1Ijoic2hpbWl6dSIsImEiOiJjam95MDBhamYxMjA1M2tyemk2aHMwenp5In0.i2kMIJulhyPLwp3jiLlpsA' | |
| //Setup mapbox-gl map | |
| var map = new mapboxgl.Map({ | |
| container: 'map', // container id | |
| style: 'mapbox://styles/mapbox/streets-v8', | |
| center: [141.15448379999998, 39.702053 ], | |
| zoom: 4, | |
| }) | |
| map.addControl(new mapboxgl.NavigationControl()); | |
| // svg要素をアペンドする | |
| var container = map.getCanvasContainer() | |
| var svg = d3.select(container).append("svg") | |
| //緯度経度->パスジェネレーター関数作成 | |
| var transform = d3.geoTransform({point: projectPoint}); | |
| var path = d3.geoPath().projection(transform); | |
| var featureElement = svg.selectAll("path") | |
| .data(geojson.features) | |
| .enter() | |
| .append("path") | |
| .attr("stroke", "red") | |
| .attr("fill", "green") | |
| .attr("fill-opacity", 0.4) | |
| //path要素のアップデート | |
| function update() { | |
| featureElement.attr("d", path); | |
| } | |
| // | |
| map.on("viewreset", update) | |
| map.on("movestart", function(){ | |
| svg.classed("hidden", true); | |
| }); | |
| map.on("rotate", function(){ | |
| svg.classed("hidden", true); | |
| }); | |
| map.on("moveend", function(){ | |
| update() | |
| svg.classed("hidden", false); | |
| }) | |
| //初期レンダリング | |
| update() | |
| function projectPoint(lon, lat) { | |
| var point = map.project(new mapboxgl.LngLat(lon, lat)); | |
| this.stream.point(point.x, point.y); | |
| } | |
| } | |
| </script> | |
| </body> |
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