133 行
4.8 KiB
PHP
133 行
4.8 KiB
PHP
<?php
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namespace SmallProgramApi\Helper;
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/**
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* 电子围栏辅助类
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* 用于判断坐标点是否在电子围栏内
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*/
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class FenceHelper
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{
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/**
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* 判断点是否在多边形内（射线法）
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* @param float $lng 经度
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* @param float $lat 纬度
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* @param array $polygon 多边形坐标数组 [['lng' => x, 'lat' => y], ...]
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* @return bool
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*/
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public static function isPointInPolygon($lng, $lat, $polygon)
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{
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if (empty($polygon) || count($polygon) < 3) {
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return false;
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}
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$count = count($polygon);
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$inside = false;
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for ($i = 0, $j = $count - 1; $i < $count; $j = $i++) {
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$xi = $polygon[$i]['lng'];
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$yi = $polygon[$i]['lat'];
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$xj = $polygon[$j]['lng'];
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$yj = $polygon[$j]['lat'];
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if ((($yi > $lat) != ($yj > $lat)) &&
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($lng < ($xj - $xi) * ($lat - $yi) / ($yj - $yi) + $xi)) {
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$inside = !$inside;
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}
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}
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return $inside;
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}
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/**
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* 判断点是否在任意一个围栏内
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* @param float $lng 经度
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* @param float $lat 纬度
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* @param array $fences 围栏数据数组
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* @return array 返回结果 ['in_fence' => bool, 'fence_name' => string]
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*/
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public static function checkPointInFences($lng, $lat, $fences)
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{
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if (empty($fences)) {
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return ['in_fence' => false, 'fence_name' => ''];
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}
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foreach ($fences as $fence) {
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// 只检查启用的围栏
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if (isset($fence['is_active']) && $fence['is_active'] != 1) {
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continue;
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}
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// 只处理多边形围栏
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if (isset($fence['fence_type']) && $fence['fence_type'] != 1) {
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continue;
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}
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$fenceData = $fence['fence_data'];
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// 如果fence_data是字符串，尝试解析
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if (is_string($fenceData)) {
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$fenceData = json_decode($fenceData, true);
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if (json_last_error() !== JSON_ERROR_NONE) {
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continue;
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}
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}
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// 如果fence_data是数组格式（新格式）
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if (is_array($fenceData)) {
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// 检查是否是多个多边形的数组格式
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if (isset($fenceData[0]) && is_array($fenceData[0])) {
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// 新格式：[{id: '', paths: [{lat: x, lng: y}]}, ...]
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if (isset($fenceData[0]['paths'])) {
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foreach ($fenceData as $polygon) {
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if (isset($polygon['paths']) && is_array($polygon['paths'])) {
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$points = [];
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foreach ($polygon['paths'] as $point) {
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if (isset($point['lat']) && isset($point['lng'])) {
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$points[] = ['lng' => $point['lng'], 'lat' => $point['lat']];
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}
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}
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if (count($points) >= 3 && self::isPointInPolygon($lng, $lat, $points)) {
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return [
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'in_fence' => true,
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'fence_name' => $fence['fence_name'] ? $fence['fence_name'] : '配送区域'
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];
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}
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}
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}
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}
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// 旧格式：直接是坐标点数组 [{lng: x, lat: y}, ...]
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else {
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$points = [];
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foreach ($fenceData as $point) {
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if (isset($point['lng']) && isset($point['lat'])) {
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$points[] = ['lng' => $point['lng'], 'lat' => $point['lat']];
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}
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}
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if (count($points) >= 3 && self::isPointInPolygon($lng, $lat, $points)) {
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return [
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'in_fence' => true,
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'fence_name' => $fence['fence_name'] ? $fence['fence_name'] : '配送区域'
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];
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}
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}
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}
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}
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}
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return ['in_fence' => false, 'fence_name' => ''];
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}
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/**
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* 获取门店的电子围栏数据
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* @param int $storeId 门店ID
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* @return array
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*/
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public static function getStoreFences($storeId)
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{
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$FenceModel = new \Common\Model\StoreDeliveryFenceModel();
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return $FenceModel->where(['store_id' => $storeId, 'is_active' => 1])->select();
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}
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} |