Open4

位置記録サービス向けmapBoxリンク集

KanataYAMAGISHIKanataYAMAGISHI

https://docs.mapbox.com/mapbox-gl-js/example/add-image-animated/

  • canvas APIを用いてアニメーション生成. 位置はgeolocateで指定できる.
map.addSource('dot-point', {
  'type': 'geojson',
  'data': {
    'type': 'FeatureCollection',
    'features': [
      {
        'type': 'Feature',
        'geometry': {
          'type': 'Point',
          'coordinates': [0, 0] // icon position [lng, lat]
        }
      }
    ]
  }
});

https://developer.mozilla.org/en-US/docs/Web/API/Canvas_API

2021/08/30 追記
アニメーションgif(複数枚の画像を所持したファイル)は上記リンクの方法では対応できないらしい。gif単体は表示できるので、一枚ずつ読み込んで更新。
この方法で対処を検討中。

https://docs.mapbox.com/mapbox-gl-js/example/animate-images/

KanataYAMAGISHIKanataYAMAGISHI

位置情報から住所取得(座標→住所, 逆変換も可)

https://docs.mapbox.com/help/glossary/geocoding-api/

Data type Description
country Generally recognized countries or, in some cases like Hong Kong, an area of quasi-national administrative status that has been given a designated country code under ISO 3166-1.
region Top-level sub-national administrative features, such as states in the United States or provinces in Canada or China.
postcode Postal codes used in country-specific national addressing systems.
district Features that are smaller than top-level administrative features but typically larger than cities, in countries that use such an additional layer in postal addressing (for example, prefectures in China).
place Typically these are cities, villages, municipalities, etc. They’re usually features used in postal addressing, and are suitable for display in ambient end-user applications where current-location context is needed (for example, in weather displays).
locality Official sub-city features present in countries where such an additional administrative layer is used in postal addressing, or where such features are commonly referred to in local parlance. Examples include city districts in Brazil and Chile and arrondissements in France.
neighborhood Colloquial sub-city features often referred to in local parlance. Unlike locality features, these typically lack official status and may lack universally agreed-upon boundaries.
address Individual residential or business addresses.
poi Points of interest. These include restaurants, stores, concert venues, parks, museums, etc.
KanataYAMAGISHIKanataYAMAGISHI

マップ上で点を動かす.
https://docs.mapbox.com/jp/mapbox-gl-js/example/animate-point-along-line/

仕組みとしては特別なメソッドが用意されているわけではなく, window.requestAnimationFrame()関数を用いてブラウザが再描画されるたびにレイヤー上に表示する座標データを更新している.

window.requestAnimationFrame() メソッドは、ブラウザに描画させたいアニメーションを指定し、次の再描画の前に、アニメーションを更新する指定した関数を呼び出すように要求します。このメソッドは再描画する前に呼び出されるコールバックメソッドを引数にひとつとります。
引用元:MDN

map.on('load', () => {
// Add a source and layer displaying a point which will be animated in a circle.
map.addSource('point', {
'type': 'geojson',
'data': pointOnCircle(0)
});
 
map.addLayer({
'id': 'point',
'source': 'point',
'type': 'circle',
'paint': {
'circle-radius': 10,
'circle-color': '#007cbf'
}
});
 
function animateMarker(timestamp) {
// Update the data to a new position based on the animation timestamp. The
// divisor in the expression `timestamp / 1000` controls the animation speed.
map.getSource('point').setData(pointOnCircle(timestamp / 1000));
 
// Request the next frame of the animation.
requestAnimationFrame(animateMarker);
}
 
// Start the animation.
animateMarker(0);
});