This repository was archived by the owner on Oct 26, 2020. It is now read-only.
-
Notifications
You must be signed in to change notification settings - Fork 15
/
Copy pathturf-buffer.html
91 lines (71 loc) · 2.21 KB
/
turf-buffer.html
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>Turf - buffer</title>
<style>
#mapDiv {
position: absolute;
display: block;
width: 100%;
height: 100%;
}
#range {
width: 300px;
}
.map-box {
padding: 10px;
}
</style>
<script src="js/jquery-1.11.3.min.js"></script>
<script src="js/turf.min.js"></script>
<script src="https://maps.googleapis.com/maps/api/js?libraries=drawing"></script>
</head>
<body onload="initMap()">
<p><input type="range" id="range" min="10" max="200" step="10" value="10" /> <span class="range-text">10 Km</span></p>
<div id="mapDiv"></div>
<script>
var map, marker;
var dataMap = new google.maps.Data();
// 台北火車站
var point = turf.point([121.51709318161011, 25.047833423462535]);
// turf.buffer
$('#range').on('change', function (e) {
$('.range-text').text($(this).val() + ' Km');
dataMapReload(marker.position, $(this).val());
});
function initMap() {
// 地圖初始設定
var mapOptions = {
center: new google.maps.LatLng(point.geometry.coordinates[1], point.geometry.coordinates[0]),
zoom: 12,
mapTypeId: google.maps.MapTypeId.ROADMAP
};
var mapElement = document.getElementById("mapDiv");
// Google 地圖初始化
map = new google.maps.Map(mapElement, mapOptions);
marker = new google.maps.Marker({
position: new google.maps.LatLng(point.geometry.coordinates[1], point.geometry.coordinates[0]),
map: map,
draggable: true,
title: '台北火車站'
});
google.maps.event.addListener(marker, 'dragend', function (e) {
dataMapReload(e.latLng, $('#range').val());
map.panTo(e.latLng);
});
// 載入 GeoJSON 資料
dataMapReload(marker.position, $('#range').val());
}
function dataMapReload(point, unit) {
unit = parseInt(unit, 10);
var turfPoint = turf.point([point.lng(), point.lat()]);
var buffered = turf.buffer(turfPoint, unit, "kilometers");
dataMap.setMap(null);
dataMap = new google.maps.Data();
dataMap.addGeoJson(buffered);
dataMap.setMap(map);
}
</script>
</body>
</html>