package com.moral.service.impl;
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import java.text.DecimalFormat;
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import java.util.ArrayList;
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import java.util.List;
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import java.util.Map;
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import org.apache.commons.collections.MapUtils;
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import org.springframework.stereotype.Service;
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import com.moral.entity.Device;
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import com.moral.entity.Point;
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import com.moral.entity.Sensor;
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import com.moral.mapper.HistoryHourlyMapper;
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import com.moral.mapper.SensorMapper;
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import com.moral.service.DeviceService;
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import com.moral.service.HistoryHourlyService;
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import com.moral.service.SensorService;
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import javax.annotation.Resource;
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@Service
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public class HistoryHourlyServiceImpl implements HistoryHourlyService {
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@Resource
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private HistoryHourlyMapper historyHourlyMapper;
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@Resource
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private DeviceService deviceService;
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@Resource
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private SensorService sensorService;
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@Resource
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private SensorMapper sensorMapper;
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@Override
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public Map<String, Object> getPollutionSourceData(Map<String, Object> parameters) throws Exception {
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List<Sensor> sensors = sensorMapper.getSensorsByMac(parameters);
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List<String> sensorKeys = new ArrayList<>();
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for (Sensor sensor : sensors) {
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sensorKeys.add(sensor.getSensorKey());
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}
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parameters.put("sensorKeys", sensorKeys);
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Map<String, Object> pollutionSourceData = historyHourlyMapper.getPollutionSourceData(parameters);
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if (MapUtils.isNotEmpty(pollutionSourceData)) {
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Map<String, String> sensorsMap = sensorService.getSensorsMap(parameters);
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String selectSensorKey = parameters.get("sensorKey").toString();
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for (Map.Entry<String, String> s : sensorsMap.entrySet()) {
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if (selectSensorKey.equals(s.getKey())) {
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selectSensorKey = s.getValue();
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}
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}
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pollutionSourceData.put("selectSensorKey", selectSensorKey);
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}
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return pollutionSourceData;
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}
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@Override
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public Point getDirPoint(Map<String, Object> parameters) throws Exception {
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Map<String, Object> pollutionSourceData = getPollutionSourceData(parameters);
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String mac = parameters.get("mac").toString();
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Device device = deviceService.getDeviceByMac(mac, false);
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Point pointEnd = new Point();
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if (MapUtils.isNotEmpty(pollutionSourceData)) {
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if (pollutionSourceData.get("e18") != null && pollutionSourceData.get("e23") != null && pollutionSourceData.get("e6") != null) {
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double windSpeed = Double.valueOf(pollutionSourceData.get("e18").toString());
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double winDir = Double.valueOf(pollutionSourceData.get("e23").toString());
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double distance = windSpeed * 3600;
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double long1 = device.getLongitude();
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double lat1 = device.getLatitude();
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String[] result = calLocationByDistanceAndLocationAndDirection(winDir, long1, lat1, distance);
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pointEnd.setLng(Double.valueOf(result[0]));
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pointEnd.setLat(Double.valueOf(result[1]));
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}
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}
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return pointEnd;
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}
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/**
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* 根据一点的坐标与距离，以及方向，计算另外一点的位置
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*
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* @param angle 角度，从正北顺时针方向开始计算
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* @param startLong 起始点经度
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* @param startLat 起始点纬度
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* @param distance 距离，单位m
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* @return
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*/
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private String[] calLocationByDistanceAndLocationAndDirection(double angle, double startLong, double startLat, double distance) {
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/** 地球半径 **/
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final double R = 6371e3;
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/** 180° **/
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final DecimalFormat df = new DecimalFormat("0.000000");
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String[] result = new String[2];
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//将距离转换成经度的计算公式
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double δ = distance / R;
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// 转换为radian，否则结果会不正确
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angle = Math.toRadians(angle);
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startLong = Math.toRadians(startLong);
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startLat = Math.toRadians(startLat);
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double lat = Math.asin(Math.sin(startLat) * Math.cos(δ) + Math.cos(startLat) * Math.sin(δ) * Math.cos(angle));
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double lng = startLong + Math.atan2(Math.sin(angle) * Math.sin(δ) * Math.cos(startLat), Math.cos(δ) - Math.sin(startLat) * Math.sin(lat));
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// 转为正常的10进制经纬度
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lng = Math.toDegrees(lng);
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lat = Math.toDegrees(lat);
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result[0] = df.format(lng);
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result[1] = df.format(lat);
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return result;
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}
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}
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