先看效果
PHP代码
<?php
namespace kds_addons\edata\controller;
use think\addons\Controller;
use think\Db;
class Maps extends Controller
{
// 经纬度计算面积
function calculate_area($points)
{
$totalArea = 0;
$numPoints = count($points);
if ($numPoints > 2) {
for ($i = 0; $i < $numPoints; $i++) {
$j = ($i + 1) % $numPoints;
$x1 = $points[$i]["lng"];
$y1 = $points[$i]["lat"];
$x2 = $points[$j]["lng"];
$y2 = $points[$j]["lat"];
$totalArea += deg2rad($x2 - $x1) * (2 + sin(deg2rad($y1)) + sin(deg2rad($y2)));
}
$totalArea *= 6378137 * 6378137 / 2;
}
return abs($totalArea);
}
// 地图设置
public function set_pi()
{
$times = time();
$id = intval(input("id"));
$this->assign("id", $id);
if (request()->isPost()) {
$l2_json = trim(input("l2_json"));
// dump($l2_json);
$l2_json = htmlspecialchars_decode($l2_json);
// $l2_json = stripslashes($l2_json);
$l2_arr = json_decode($l2_json, true);
// dump($l2_arr);
Db::name("land_l2")->where("land_id", $id)->delete(); //删除数据
$datas_ia = [];
foreach ($l2_arr as $key => &$value) {
// dump($value);
$value["land_id"] = $id;
$value["create_time"] = $times;
ksort($value); //数组按键名排序
$datas_ia[] = $value;
}
$datas_ia = array_values($datas_ia); //只保留数组中的value
Db::name("land_l2")->insertAll($datas_ia); //插入多条数据
// 计算中心
// 经度
$lng_sum = Db::name("land_l2")->where("land_id", $id)->sum("lng");
$lng_nu = Db::name("land_l2")->where("land_id", $id)->count("lng");
$datas["lng"] = $lng_sum / $lng_nu;
// 纬度
$lat_sum = Db::name("land_l2")->where("land_id", $id)->sum("lat");
$lat_nu = Db::name("land_l2")->where("land_id", $id)->count("lat");
$datas["lat"] = $lat_sum / $lat_nu;
// 计算面积
$lists_l2 = Db::name("land_l2")->field(["lng", "lat"])->where("land_id", $id)->select();
$area = $this->calculate_area($lists_l2);
$datas["area_m2"] = $area;
$datas["area_gq2"] = $area / 10000; //平方米转换为平方公顷
$datas["not_gp2"] = $area / 10000; //平方米转换为平方公顷
// 更新数据
Db::name("land")->where("id", $id)->update($datas);
$res = [];
$res["code"] = 0;
return json($res);
}
// 获取所有标记点
$lists = Db::name("land_l2")
->field(["lng", "lat"])
->where("land_id", $id)
->order("id asc")
->select();
$this->assign("lists", $lists);
// 获取中心坐标
$first = reset($lists);
$this->assign("lng", $first["lng"]);
$this->assign("lat", $first["lat"]);
return $this->fetch();
// return $this->fetch(request()->action() . "_qq");
}
// 地图查看
public function se_pi()
{
$id = intval(input("id"));
$this->assign("id", $id);
// 获取所有标记点
$lists = Db::name("land_l2")
->field(["lng", "lat"])
->where("land_id", $id)
->order("id asc")
->select();
$this->assign("lists", $lists);
// 获取中心坐标
$first = reset($lists);
$this->assign("lng", $first["lng"]);
$this->assign("lat", $first["lat"]);
return $this->fetch();
// return $this->fetch(request()->action() . "_qq");
}
}
选点
<html>
<head>
<meta charset="utf-8">
<title></title>
<meta name="renderer"
content="webkit">
<meta http-equiv="X-UA-Compatible"
content="IE=edge,chrome=1">
<meta name="viewport"
content="width=device-width, initial-scale=1.0, minimum-scale=1.0, maximum-scale=1.0, user-scalable=0">
<link rel="stylesheet"
href="/yunqikds_static/iconfont/iconfont.css">
<script src="/yunqikds_static/iconfont/iconfont.js"></script>
<link rel="stylesheet"
href="/yunqikds_static/layuiadmin/layui/css/layui.css"
media="all">
<script src="/yunqikds_static/layuiadmin/layui/layui.js"></script>
<script src="/yunqikds_static/js/jquery-1.10.2.min.js"></script>
</head>
<body>
<div id="container"></div>
<ul class="drawing-panel">
<li class="btn"
onclick="map_tog()">切换</li>
<li class="btn"
onclick="map_save()">保存</li>
</ul>
<script src="https://api.map.baidu.com/api?v=1.0&&type=webgl&ak=xxx"></script>
<script type="text/javascript"
src="https://api.map.baidu.com/library/GeoUtils/1.2/src/GeoUtils_min.js"></script>
<script type="text/javascript">
$(function () {
layui.use([
"layer",
], function () {
layer = layui.layer;
});
});
var is_add = true; //解决单击添加和删除冲突的问题
var map = new BMapGL.Map("container", {
mapType: BMAP_SATELLITE_MAP, //卫星底图
// mapType: BMAP_NORMAL_MAP, //矢量底图
});
`{if $lng&&$lat}`;
var c_pi = new BMapGL.Point(parseFloat(`{$lng}`), parseFloat(`{$lat}`));
`{else}`;
var c_pi = "乐都区";
`{/if}`;
map.centerAndZoom(c_pi, 16);
map.enableScrollWheelZoom(true);
map.disableDoubleClickZoom(); //设置是否可以双击放大
// 添加标记点
function p_add(lat, lng, i = null) {
lat = parseFloat(lat);
lng = parseFloat(lng);
var pis = new BMapGL.Point(lng, lat);
var marker = new BMapGL.Marker(pis, {
enableDragging: true,
});
if (i) {
// console.log(i);
var opts = {
position: pis, // 指定文本标注所在的地理位置
offset: new BMapGL.Size(0, 0) // 设置文本偏移量
};
var label = new BMapGL.Label(i, opts);
// 自定义文本标注样式
label.setStyle({
color: "glay",
borderRadius: "5px",
borderColor: "red",
padding: "5px",
fontSize: "16px",
height: "20px",
lineHeight: "20px",
fontFamily: "微软雅黑"
});
map.addOverlay(label);
}
marker.addEventListener("click", function (e) {
// console.log(e);
map.removeOverlay(marker); //删除标记
map.removeOverlay(label); //删除标签
is_add = false;
setTimeout(function () {
is_add = true;
}, 1);
});
map.addOverlay(marker);
}
`{volist name="lists" id="vo"}`;
p_add(`{$vo.lat}`, `{$vo.lng}`, `{$i}`);
`{/volist}`;
// 监听点击事件添加marker
map.addEventListener("click", function (e) {
// console.log(e);
if (is_add) {
p_add(e.latlng.lat, e.latlng.lng);
}
});
// 切换地图类型
function map_tog() {
if (map.getMapType() != BMAP_SATELLITE_MAP) {
map.setMapType(BMAP_SATELLITE_MAP); //卫星底图
} else {
map.setMapType(BMAP_NORMAL_MAP); //矢量底图
}
}
// 保存标记标记点
function map_save() {
var l2_marker = [];
// 获取经纬度
var arr_marker = map.getOverlays();
// console.log(arr_marker);
$.each(arr_marker, function (key, vo) {
// console.log(vo);
l2_marker.push({
lat: vo.latLng.lat,
lng: vo.latLng.lng,
});
});
// console.log(l2_marker);
l2_marker = JSON.stringify(l2_marker);
$.post("", {
id: "{$id}",
l2_json: l2_marker,
}, function (params) {
if (params.code == 0) {
layer.msg("标记成功");
} else {
layer.msg("标记失败");
}
}, "json");
}
</script>
</body>
</html>
效果查看
<html>
<head>
<meta charset="utf-8">
<title></title>
<meta name="renderer"
content="webkit">
<meta http-equiv="X-UA-Compatible"
content="IE=edge,chrome=1">
<meta name="viewport"
content="width=device-width, initial-scale=1.0, minimum-scale=1.0, maximum-scale=1.0, user-scalable=0">
<link rel="stylesheet"
href="/yunqikds_static/iconfont/iconfont.css">
<script src="/yunqikds_static/iconfont/iconfont.js"></script>
<link rel="stylesheet"
href="/yunqikds_static/layuiadmin/layui/css/layui.css"
media="all">
<script src="/yunqikds_static/layuiadmin/layui/layui.js"></script>
<script src="/yunqikds_static/js/jquery-1.10.2.min.js"></script>
</head>
<body>
<div id="container"></div>
<ul class="drawing-panel">
<li class="btn"
onclick="map_tog()">切换</li>
</ul>
<script src="https://api.map.baidu.com/api?v=1.0&&type=webgl&ak=xxx"></script>
<script type="text/javascript"
src="https://api.map.baidu.com/library/GeoUtils/1.2/src/GeoUtils_min.js"></script>
<script type="text/javascript">
$(function () {
layui.use([
"layer",
], function () {
layer = layui.layer;
});
});
var map = new BMapGL.Map("container", {
mapType: BMAP_SATELLITE_MAP, //卫星底图
// mapType: BMAP_NORMAL_MAP, //矢量底图
});
`{if $lng&&$lat}`;
var c_pi = new BMapGL.Point(parseFloat(`{$lng}`), parseFloat(`{$lat}`));
`{else}`;
var c_pi = "乐都区";
`{/if}`;
map.centerAndZoom(c_pi, 16);
map.enableScrollWheelZoom(true);
map.disableDoubleClickZoom(); //设置是否可以双击放大
var polygon_path = [];
`{volist name="lists" id="vo"}`;
polygon_path.push(new BMapGL.Point(parseFloat(`{$vo.lng}`), parseFloat(`{$vo.lat}`)));
`{/volist}`;
// console.log(polygon_path);
// 绘制面
var polygon1 = new BMapGL.Polygon(polygon_path, {
strokeColor: "#295BFF",
strokeWeight: 3,
strokeOpacity: 0.5,
fillOpacity: 0,
});
map.addOverlay(polygon1);
// 切换地图类型
function map_tog() {
if (map.getMapType() != BMAP_SATELLITE_MAP) {
map.setMapType(BMAP_SATELLITE_MAP); //卫星底图
} else {
map.setMapType(BMAP_NORMAL_MAP); //矢量底图
}
}
</script>
</body>
</html>