footprint
撰寫 footprint.geojson
footprint.geojson 描述 building 在地面上 (ground) 、空中 (aerial) 、地下 (subterranean) 的投影形狀。因此， ground 的投影就使用 level 1F 的形狀；而 aerial 的投影是所有樓層的形狀的聯集，這部分可以先使用最高樓層的形狀，進入 IMDF Sandbox 後再給他自動修正。
要注意填寫的欄位包含以下幾個：
| Prop | Type | Default |
|---|---|---|
geometry? | polygon | - |
building_ids? | string | e.g. ["b2c99096-281b-4d6e-b8c9-8042a264609b"] |
name? | null | null |
category? | string | ground, aerial, subterranean |
id? | string | uuid v4 |
{
"type": "FeatureCollection",
"features": [
{
"type": "Feature",
"id": "f329780b-9f38-4fa4-8d52-e00f766a6d1d",
"feature_type": "footprint",
"properties": {
"category": "ground",
"name": null,
"building_ids": ["02f9d41b-8b38-4b8b-a13c-5e5288248460"]
},
"geometry": {
"type": "Polygon",
"coordinates": [
[
[121.5156948, 25.1227705],
[121.5156815, 25.1227699],
[121.5156484, 25.1227683],
// ...
[121.5157176, 25.1227716],
[121.5157124, 25.1227713],
[121.5156948, 25.1227705]
]
]
}
},
{
"type": "Feature",
"id": "89c543cf-968a-4511-8760-760cb72134c6",
"feature_type": "footprint",
"properties": {
"category": "aerial",
"name": null,
"building_ids": ["02f9d41b-8b38-4b8b-a13c-5e5288248460"]
},
"geometry": {
"type": "Polygon",
"coordinates": [
[
[121.5156482, 25.1227683],
[121.5156499, 25.1227391],
[121.5156501, 25.1227363],
// ...
[121.5156483, 25.1227684],
[121.5156483, 25.1227683],
[121.5156482, 25.1227683]
]
]
}
}
]
}