private function checkAreaAlarm($device, $location, $rule)
{
// Log::write("" .
// "\ncheckAreaAlarm\n" .$rule['id'].
// "\nRule:\n".print_r($rule, true)."" .
// "\nDevice\n".print_r($device, true)."" .
// "\nLocation\n".print_r($location, true) .
// "", Log::INFO);
$polygon = $this->getPathAreaPoints($rule['path_area_id']);
//将有关数字转成数字形式（否则是字符串形式，某些比较运算会有问题的）
$rule['speed'] += 0;
$location['speed'] += 0;
$rule['long'] += 0;
$rule['distance'] += 0;
$speedMsg = $this->getSpeedLimitAlarmMsg($location['speed'], $rule['speed']);
if ($rule['in_out'] == '进入') {
if (Geometry::geoPointInPolygon2($location['baidu_lat'], $location['baidu_lng'], $polygon)) {
if (empty($rule['long'])) {
$msg = '按照规则[' . $rule['label'] . ']，' . $device['target_type'] . '[' . $device['target_name'] . ']，' . '不允许在此时[' . date('Y-m-d H:i:s') . ']进入区域[' . $rule['path_area_label'] . ']，' . "而现在检测到目标在区域内（坐标：{$location['baidu_lat']}, {$location['baidu_lng']}）";
$msg .= empty($speedMsg) ? '' : '，并且' . $speedMsg;
return $this->startAlarm($device, $location, $rule, $msg);
} else {
//允许进入时间 不为0
$longInSeconds = $rule['long'] * 60;
while ($previousLocation = $this->getPreviousLocation($device['id'], $location['id'])) {
if (!Geometry::geoPointInPolygon2($previousLocation['baidu_lat'], $previousLocation['baidu_lng'], $polygon)) {
return empty($speedMsg) ? null : $this->startSpeedAlarm($device, $location, $rule);
//历史轨迹点不在区域内，不用报警（如果不超速的话）
}
$timeDiff = $this->getTimeDifference('now', $previousLocation['time']);
if ($timeDiff >= $longInSeconds) {
$msg = '按照规则[' . $rule['label'] . ']，' . $device['target_type'] . '[' . $device['target_name'] . ']，' . '不允许在此时[' . date('Y-m-d H:i:s') . ']进入区域[' . $rule['path_area_label'] . ']' . '超过' . $rule['long'] . '分钟，' . "而现在检测到目标在区域内（坐标：{$location['baidu_lat']}, {$location['baidu_lng']}），" . "并且时间已经超过" . floor($timeDiff / 60) . "分钟";
$msg .= empty($speedMsg) ? '' : '，并且' . $speedMsg;
return $this->startAlarm($device, $location, $rule, $msg);
}
}
return empty($speedMsg) ? null : $this->startSpeedAlarm($device, $location, $rule);
//已经 没有上一个定位了（时间仍不够长），不用报警
}
} else {
//不允许进入，但是现在点不在区域内，仍有可能需要报警：如果当前点和上一个轨迹点的线段切割区域多边形的话。
$previousLocation = $this->getPreviousLocation($device['id'], $location['id']);
$timeDiff = floor($this->getTimeDifference('now', $previousLocation['time']) / 60);
if ($timeDiff >= $rule['long'] && Geometry::geoSegmentCuttingPolygon($previousLocation['baidu_lat'], $previousLocation['baidu_lng'], $location['baidu_lat'], $location['baidu_lng'], $polygon)) {
$msg = '按照规则[' . $rule['label'] . ']，' . $device['target_type'] . '[' . $device['target_name'] . ']，' . '不允许在此时[' . date('Y-m-d H:i:s') . ']进入区域[' . $rule['path_area_label'] . ']' . (empty($rule['long']) ? '' : '超过' . $rule['long'] . '分钟') . "，而现在检测到目标的当前位置与上一个定位点的轨迹路线经过该区域" . (empty($rule['long']) ? '' : '，并且两轨迹点时间间隔已经超过' . $timeDiff . '分钟');
$msg .= empty($speedMsg) ? '' : '，并且' . $speedMsg;
return $this->startAlarm($device, $location, $rule, $msg);
}
return null;
}
} else {
//离开区域报警
$distance = round(Geometry::geoPointDistancePolygon($location['baidu_lat'], $location['baidu_lng'], $polygon));
if (!Geometry::geoPointInPolygon2($location['baidu_lat'], $location['baidu_lng'], $polygon) && $distance >= $rule['distance']) {
if (empty($rule['long'])) {
// 时长限制为0
$msg = '按照规则[' . $rule['label'] . ']，' . $device['target_type'] . '[' . $device['target_name'] . ']，' . '不允许在此时[' . date('Y-m-d H:i:s') . ']离开区域[' . $rule['path_area_label'] . ']' . $rule['distance'] . '米，' . "而现在检测到目标在区域外（坐标：{$location['baidu_lat']}, {$location['baidu_lng']}），距离区域" . $distance . '米';
$msg .= empty($speedMsg) ? '' : '，并且' . $speedMsg;
return $this->startAlarm($device, $location, $rule, $msg);
} else {
//允许离开一段时间
$longInSeconds = $rule['long'] * 60;
$curLocationId = $location['id'];
while ($previousLocation = $this->getPreviousLocation($device['id'], $curLocationId)) {
$historyDist = Geometry::geoPointDistancePolygon($previousLocation['baidu_lat'], $previousLocation['baidu_lng'], $polygon);
if (Geometry::geoPointInPolygon2($previousLocation['baidu_lat'], $previousLocation['baidu_lng'], $polygon) || $historyDist < $rule['distance']) {
//历史轨迹点在区域内或者离开距离不够
return empty($speedMsg) || $distance < $rule['distance'] ? null : $this->startSpeedAlarm($device, $location, $rule);
}
$timeDiff = $this->getTimeDifference('now', $previousLocation['time']);
if ($timeDiff >= $longInSeconds) {
$msg = '按照规则[' . $rule['label'] . ']，' . $device['target_type'] . '[' . $device['target_name'] . ']，' . '不允许在此时[' . date('Y-m-d H:i:s') . ']离开区域[' . $rule['path_area_label'] . ']' . $rule['distance'] . '米，' . '超过' . $rule['long'] . '分钟，' . "而现在检测到目标在区域外（坐标：{$location['baidu_lat']}, {$location['baidu_lng']}），" . "并且离开区域至少" . $rule['distance'] . '米' . "已经超过" . floor($timeDiff / 60) . "分钟";
$msg .= empty($speedMsg) ? '' : '，并且' . $speedMsg;
return $this->startAlarm($device, $location, $rule, $msg);
}
$curLocationId = $previousLocation['id'];
}
return empty($speedMsg) || $distance < $rule['distance'] ? null : $this->startSpeedAlarm($device, $location, $rule);
//已经 没有上一个定位了（时间仍不够长），不用报警
}
}
return null;
//轨迹点在区域里面，不用报警
}
}
public function test8()
{
$point = array('latitude' => 39.915, 'longitude' => 116.404);
$polygon = array(array('latitude' => 21.827688, 'longitude' => 90.279838), array('latitude' => 49.004931, 'longitude' => 114.269914), array('latitude' => 36.251841, 'longitude' => 126.780075), array('latitude' => 9.739644, 'longitude' => 128.546216), array('latitude' => 21.827688, 'longitude' => 90.279838));
echo "<pre>";
print_r(Geometry::geoPointPedalPolygon(39.915, 116.404, $polygon));
print_r(Geometry::geoPointDistancePolygon(39.915, 116.404, $polygon));
echo "</pre>";
}
