From a2ee6e0dcdcfd9d1b8011a3cecb4e0fc4f6eeea3 Mon Sep 17 00:00:00 2001
From: dcb <xgybdcb@163.com>
Date: 星期五, 06 六月 2025 18:10:32 +0800
Subject: [PATCH] 实时模拟功能实现
---
src/main/java/com/se/nsl/service/SimuService.java | 155 +++++++++++++++++++++++++++++++++++++++++++++++++++
1 files changed, 154 insertions(+), 1 deletions(-)
diff --git a/src/main/java/com/se/nsl/service/SimuService.java b/src/main/java/com/se/nsl/service/SimuService.java
index c218828..1c314bc 100644
--- a/src/main/java/com/se/nsl/service/SimuService.java
+++ b/src/main/java/com/se/nsl/service/SimuService.java
@@ -4,24 +4,44 @@
import com.baomidou.mybatisplus.core.metadata.IPage;
import com.baomidou.mybatisplus.core.metadata.OrderItem;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
+import com.bc.zarr.ZarrArray;
+import com.bc.zarr.ZarrGroup;
+import com.se.nsl.config.PropertiesConfig;
import com.se.nsl.domain.po.Simu;
+import com.se.nsl.domain.vo.SimuResult;
import com.se.nsl.domain.vo.SimuVo;
import com.se.nsl.helper.StringHelper;
import com.se.nsl.mapper.SimuMapper;
+import com.se.nsl.utils.CoordinateTransformer;
+import com.se.nsl.utils.TimeFormatUtil;
import lombok.extern.slf4j.Slf4j;
+import org.gdal.gdal.Band;
+import org.gdal.gdal.Dataset;
+import org.gdal.gdal.gdal;
+import org.gdal.gdalconst.gdalconstConstants;
import org.springframework.stereotype.Service;
+import ucar.ma2.InvalidRangeException;
import javax.annotation.Resource;
+import java.io.File;
+import java.io.IOException;
+import java.time.Instant;
+import java.time.LocalDateTime;
+import java.time.ZoneId;
+import java.time.format.DateTimeFormatter;
import java.util.Arrays;
-import java.util.Collections;
import java.util.List;
@Slf4j
@Service
@SuppressWarnings("ALL")
public class SimuService {
+ public static final String TIF_EXTSION = ".tif";
@Resource
SimuMapper simuMapper;
+
+ @Resource
+ PropertiesConfig config;
/**
* 鍒嗛〉鏌ヨ鎺ㄦ紨妯℃嫙
@@ -108,4 +128,137 @@
public int updateById(Simu simu) {
return simuMapper.updates(Arrays.asList(simu));
}
+
+ public SimuResult queryByPosition(double lon, double lat, long time, String serviceName) {
+ //transform coordiante from 4326 to 4548
+ double[] xy = CoordinateTransformer.transform(4326, 4548, lon, lat);
+// System.out.println(String.format("杞崲鍓嶇殑鍧愭爣锛歺:%s,y:%s", lon, lat));
+// System.out.println(String.format("杞崲鍚庣殑鍧愭爣锛歺:%s,y:%s", xy[0], xy[1]));
+ //read from zarr
+// return queryByZarr(xy, time, serviceName);
+
+ //read from tif file
+ return queryByTif(xy, time, serviceName);
+
+ }
+
+ private SimuResult queryByZarr(double[] xy, long time, String serviceName) {
+ double x = xy[0];
+ double y = xy[1];
+ String prefix = formatTime(time);
+ File inPath = new File(config.getInPath());
+// File tifDir = new File(inPath, serviceName + File.separator + "depth");
+// int index = 0;
+// File[] files = tifDir.listFiles();
+// for (File file : files) {
+// String name = file.getName();
+// if (!name.endsWith(TIF_EXTSION)) continue;
+// if (name.equals(prefix + TIF_EXTSION)) {
+// break;
+// }
+// index++;
+// }
+ File dem = new File(inPath, serviceName + File.separator + "DEM.tif");
+ ColumnRow cr = getColumnRow(dem.getAbsoluteFile(), x, y);
+ if (cr == null) return null;
+
+ File zarr = new File(inPath, serviceName + File.separator + "result.zarr");
+ try {
+ ZarrGroup group = ZarrGroup.open(zarr.toPath());
+ ZarrArray depthArray = group.openArray("depth");
+ int[] shape = new int[] {60, 637, 351};
+// int[] offset = new int[]{210, 384};
+ float[] depth = (float[]) depthArray.read(shape);
+ System.out.println("depth:" + depth.length);
+ } catch (IOException | InvalidRangeException e) {
+ throw new RuntimeException(e);
+ }
+
+
+ return null;
+ }
+
+ private SimuResult queryByTif(double[] xy, long time, String serviceName) {
+ double x = xy[0];
+ double y = xy[1];
+ File inPath = new File(config.getInPath());
+ String prefix = formatTime(time);
+ String child = serviceName + File.separator + "depth" + File.separator + prefix + TIF_EXTSION;
+ File tifFile = new File(inPath, child);
+ if (!tifFile.exists()) {
+ return null;
+ }
+
+ ColumnRow cr = getColumnRow(tifFile, x, y);
+ if (cr == null) return null;
+// System.out.println("col:" + cr.col + " ,row:" + cr.row);
+ float depth = readPixelValue(cr.dataset, cr.col, cr.row, 1);
+ float velocity = calcVelocity(cr.dataset, cr.col, cr.row);
+ SimuResult result = new SimuResult();
+ result.setDepth(depth);
+ result.setVelocity(velocity);
+ return result;
+ }
+
+ private static ColumnRow getColumnRow(File tifFile, double x, double y) {
+ Dataset dataset = gdal.Open(tifFile.getAbsolutePath(), gdalconstConstants.GA_ReadOnly);
+ // 鑾峰彇鍦扮悊鍙樻崲鍙傛暟锛�6鍏冪礌鏁扮粍锛�
+ // [0]: 宸︿笂瑙扻鍧愭爣, [1]: 鍍忓厓瀹藉害, [2]: X鏂瑰悜鏃嬭浆,
+ // [3]: 宸︿笂瑙扽鍧愭爣, [4]: Y鏂瑰悜鏃嬭浆, [5]: 鍍忓厓楂樺害锛堣礋鍊艰〃绀篩杞村悜涓嬶級
+ double[] geoTransform = dataset.GetGeoTransform();
+ //璁＄畻鏍呮牸琛屽垪鍙�
+ int col = (int) ((x - geoTransform[0]) / geoTransform[1]);
+ int row = (int) ((geoTransform[3] - y) / Math.abs(geoTransform[5]));
+ int width = dataset.getRasterXSize();
+ int height = dataset.getRasterYSize();
+ if (col < 0 || col > width || row < 0 || row > height) {
+ log.warn("琛屽垪鍙蜂笉鍦╰if鑼冨洿鍐�");
+ return null;
+ }
+ return new ColumnRow(dataset, col, row);
+ }
+
+ private static class ColumnRow {
+ public final Dataset dataset;
+ public final int col;
+ public final int row;
+
+ public ColumnRow(Dataset dataset, int col, int row) {
+ this.dataset = dataset;
+ this.col = col;
+ this.row = row;
+ }
+ }
+
+ private float calcVelocity(Dataset dataset, int col, int row) {
+ float x = readPixelValue(dataset, col, row, 2);
+ float y = readPixelValue(dataset, col, row, 3);
+ float velocity = 0f;
+ if (Float.isNaN(x) && Float.isNaN(y)) {
+ velocity = 0f;
+ } else if (Float.isNaN(x)) {
+ velocity = y;
+ } else if (Float.isNaN(y)) {
+ velocity = x;
+ } else {
+ velocity = (float) Math.sqrt(x * x + y * y);
+ }
+ return velocity;
+ }
+
+ private float readPixelValue(Dataset dataset, int col, int row, int bandNum) {
+ Band band = dataset.GetRasterBand(bandNum);
+ float[] values = new float[1];
+ band.ReadRaster(col, row, 1, 1, values);
+ return values[0];
+ }
+
+ private String formatTime(long time) {
+// Instant instant = Instant.ofEpochMilli(time);
+// LocalDateTime localDateTime = LocalDateTime.ofInstant(instant, ZoneId.systemDefault());
+// DateTimeFormatter formatter = DateTimeFormatter.ofPattern("yyyyMMddHHmmss");
+// return localDateTime.format(formatter);
+ return TimeFormatUtil.formatTime(time, "yyyyMMddHHmmss");
+ }
+
}
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