package com.se.simu.service;
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import cn.hutool.core.io.FileUtil;
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import com.alibaba.fastjson.JSON;
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import com.se.simu.config.PropertiesConfig;
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import com.se.simu.domain.dto.ExtensionDto;
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import com.se.simu.domain.dto.LayerDto;
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import com.se.simu.domain.dto.ResultDto;
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import com.se.simu.domain.po.DataPo;
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import com.se.simu.helper.GdalHelper;
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import lombok.extern.slf4j.Slf4j;
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import org.gdal.gdal.Band;
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import org.gdal.gdal.Dataset;
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import org.gdal.gdal.WarpOptions;
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import org.gdal.gdal.gdal;
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import org.gdal.gdalconst.gdalconst;
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import org.gdal.ogr.Geometry;
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import org.springframework.stereotype.Service;
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import javax.annotation.Resource;
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import javax.imageio.ImageIO;
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import java.awt.*;
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import java.awt.image.BufferedImage;
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import java.io.*;
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import java.util.*;
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import java.util.List;
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/**
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* 处理结果服务类
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*
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* @author WWW
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* @date 2024-09-29
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*/
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@Slf4j
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@Service
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@SuppressWarnings("ALL")
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public class ResultService {
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@Resource
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PropertiesConfig config;
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public final static double MAX_X_OFFSET = 0.002;
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public void process(DataPo data) throws Exception {
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String basePath = config.getInPath() + File.separator + data.getInPath() + File.separator;
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ResultDto dto = new ResultDto(
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data.getInPath(),
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basePath + config.getTerrainFile(),
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basePath + config.getBuildingFile(),
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basePath + config.getWaterPath(),
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basePath + config.getFlowPath(),
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config.getOutPath(),
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"");
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LayerDto layer = new LayerDto(config.getVer(), data.getEpsg(), config.getSizes());
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process(dto, layer);
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}
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private void process(ResultDto dto, LayerDto layer) throws Exception {
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try {
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copeTerrain(dto, layer);
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copeBuilding(dto, layer);
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copeWater(dto, layer);
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copeFlow(dto, layer);
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copeLayerJson(dto, layer);
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} finally {
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File dir = new File(dto.getTemp());
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if (dir.exists()) {
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FileUtil.del(dir);
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}
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}
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}
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/**
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* 地形
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*/
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private void copeTerrain(ResultDto dto, LayerDto layer) {
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Dataset ds = null;
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try {
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ds = gdal.Open(dto.getTerrainFile(), gdalconst.GA_ReadOnly);
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if (null == ds || 0 == ds.getRasterCount() || null == ds.GetSpatialRef()) return;
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setTerrainInfo(ds, layer);
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setWaterInfo(dto, layer);
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createTerrainPng(dto, ds, layer);
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} finally {
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if (null != ds) ds.delete();
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}
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}
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private void setTerrainInfo(Dataset ds, LayerDto layer) {
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Geometry minPoint = GdalHelper.getMinPoint(ds);
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Geometry maxPoint = GdalHelper.getMaxPoint(ds);
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double minx = getMinVal(minPoint.GetX(0), 10000000);
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double miny = getMinVal(minPoint.GetY(0), 10000000);
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double maxx = getMaxVal(maxPoint.GetX(0) + MAX_X_OFFSET, 10000000);
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double maxy = getMaxVal(maxPoint.GetY(0), 10000000);
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layer.setExtension(new ExtensionDto(minx, miny, maxx, maxy, Double.MAX_VALUE, Double.MIN_VALUE));
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Band band = ds.GetRasterBand(1);
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double[] mm = new double[2];
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band.ComputeRasterMinMax(mm, 0);
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layer.getTerrain().setHeight(getMinVal(mm[0], 1000), getMaxVal(mm[1], 1000));
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}
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private static double getMinVal(double val, double radix) {
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return ((long) Math.floor(val * radix)) / radix;
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}
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private static double getMaxVal(double val, double radix) {
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return ((long) Math.ceil(val * radix)) / radix;
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}
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private void createTerrainPng(ResultDto dto, Dataset ds, LayerDto layer) {
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String terrainPath = dto.getOutPath() + File.separator + "terrain";
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File f = new File(terrainPath);
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if (!f.exists() || !f.isDirectory()) f.mkdirs();
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for (int[] sizes : layer.getTerrain().getSize()) {
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String tif = dto.getTemp() + File.separator + "terrain_" + sizes[0] + "_" + sizes[1] + ".tif";
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Resample(ds, tif, sizes[0], sizes[1], layer);
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if (!new File(tif).exists()) continue;
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String png = terrainPath + File.separator + sizes[0] + "_" + sizes[1] + ".png";
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Terrain2Png(layer, tif, png, sizes[0], sizes[1]);
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}
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}
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private static void Resample(Dataset ds, String dest, int width, int height, LayerDto layer) {
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Vector<String> vector = new Vector<>();
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vector.add("-t_srs");
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vector.add("EPSG:" + 4326);
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vector.add("-ts");
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vector.add("" + width);
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vector.add("" + height);
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vector.add("-te");
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vector.add("" + layer.getExtension().getMinx());
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vector.add("" + layer.getExtension().getMiny());
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vector.add("" + layer.getExtension().getMaxx());
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vector.add("" + layer.getExtension().getMaxy());
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vector.add("-te_srs");
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vector.add("EPSG:" + 4326);
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vector.add("-r");
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vector.add("bilinear");
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vector.add("-of");
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vector.add("GTiff");
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WarpOptions warpOptions = new WarpOptions(vector);
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Dataset destDs = gdal.Warp(dest, new Dataset[]{ds}, warpOptions);
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destDs.delete();
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}
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private static void Terrain2Png(LayerDto layer, String tif, String png, int width, int height) {
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Dataset ds = null;
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try {
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ds = gdal.Open(tif, gdalconst.GA_ReadOnly);
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if (null == ds || 0 == ds.getRasterCount()) return;
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Band band = ds.GetRasterBand(1);
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float[] buffer = new float[width * height];
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//band.ReadRaster(0, 0, width, height, buffer, width, height, 0, 0);
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band.ReadRaster(0, 0, width, height, buffer);
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BufferedImage image = new BufferedImage(width, height, BufferedImage.TYPE_INT_ARGB);
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double differ = layer.getExtension().getMaxHeight() - layer.getExtension().getMinHeight(), minHeight = layer.getExtension().getMinHeight();
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for (int x = 0; x < width; x++) {
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for (int y = 0; y < height; y++) {
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int offset = x + y * width;
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if (Float.isNaN(buffer[offset]) || buffer[offset] < -999 || buffer[offset] < minHeight) continue;
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int r = 0, g, b;
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if (buffer[offset] - layer.getExtension().getMaxHeight() > 0) {
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g = b = 255;
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} else {
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int val = (int) ((buffer[offset] - minHeight) / differ * 65535);
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g = val / 256;
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b = val % 256;
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}
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Color color = new Color(r, g, b, 127);
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//graphic.drawImage(image, x, y, 1, 1, color, null);
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image.setRGB(x, y, color.getRGB());
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}
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}
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savePng(image, png);
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} finally {
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if (null != ds) ds.delete();
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}
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}
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private static BufferedImage createImage(int width, int height) {
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BufferedImage image = new BufferedImage(width, height, BufferedImage.TYPE_INT_ARGB);
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Graphics2D graphic = image.createGraphics();
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Color transparent = new Color(0, 0, 0, 0);
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graphic.setColor(transparent);
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graphic.clearRect(0, 0, width, height);
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graphic.dispose();
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return image;
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}
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private static void savePng(BufferedImage image, String png) {
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try {
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ImageIO.write(image, "png", new File(png));
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} catch (Exception ex) {
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log.error(ex.getMessage(), ex);
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}
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}
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/**
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* 建筑
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*/
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private void copeBuilding(ResultDto dto, LayerDto layer) {
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Dataset ds = null;
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try {
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ds = gdal.Open(dto.getBuildingFile(), gdalconst.GA_ReadOnly);
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if (null == ds || 0 == ds.getRasterCount()) return;
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for (int[] sizes : layer.getTerrain().getSize()) {
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String tif = dto.getTemp() + File.separator + "building_" + sizes[0] + "_" + sizes[1] + ".tif";
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Resample(ds, tif, sizes[0], sizes[1], layer);
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if (!new File(tif).exists()) continue;
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Dataset dataset = gdal.Open(tif, gdalconst.GA_ReadOnly);
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if (null == dataset || 0 == dataset.getRasterCount()) return;
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float[] buffer = new float[sizes[0] * sizes[1]];
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//dataset.GetRasterBand(1).ReadRaster(0, 0, sizes[0], sizes[1], buffer, sizes[0], sizes[1], 0, 0);
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dataset.GetRasterBand(1).ReadRaster(0, 0, sizes[0], sizes[1], buffer);
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dto.getBuildings().put(sizes[0] + "_" + sizes[1], buffer);
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dataset.delete();
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}
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} finally {
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if (null != ds) ds.delete();
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}
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}
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/**
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* 水面
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*/
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private void setWaterInfo(ResultDto dto, LayerDto layer) {
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List<String> files = getFiles(dto.getWaterPath(), ".tif");
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layer.getWaters().setFiles(files);
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if (null == files || files.size() == 0) return;
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setWaterData(layer, files);
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setWaterHeight(layer, files);
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}
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private void copeWater(ResultDto dto, LayerDto layer) {
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List<String> files = layer.getWaters().getFiles();
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if (files.size() == 0 || files.size() != layer.getWaters().getData().size()) return;
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processWaters(dto, files, layer);
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}
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private static List<String> getFiles(String path, String suffix) {
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List<String> files = new ArrayList<>();
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getFiles(files, new File(path), suffix);
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files.sort((a, b) -> a.compareToIgnoreCase(b));
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return files;
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}
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private static void getFiles(List<String> files, File file, String suffix) {
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if (!file.exists()) return;
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if (file.isDirectory()) {
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File[] fileList = file.listFiles();
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for (File f : fileList) {
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if (f.isDirectory()) {
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getFiles(files, f, suffix);
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} else {
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if (f.getName().toLowerCase().endsWith(suffix)) {
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files.add(f.getPath());
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}
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}
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}
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} else {
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if (file.getName().toLowerCase().endsWith(suffix)) {
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files.add(file.getPath());
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}
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}
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}
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private static void setWaterData(LayerDto layer, List<String> files) {
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Calendar calendar = Calendar.getInstance();
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calendar.setTime(new Date());
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calendar.set(Calendar.MILLISECOND, 0);
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for (String file : files) {
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String fileName = getNameWithExt(file);
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int hour = Integer.parseInt(fileName.substring(0, 2));
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int minute = Integer.parseInt(fileName.substring(2, 4));
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int second = Integer.parseInt(fileName.substring(4, 6));
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calendar.set(Calendar.HOUR_OF_DAY, hour);
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calendar.set(Calendar.MINUTE, minute);
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calendar.set(Calendar.SECOND, second);
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layer.getWaters().getData().add(calendar.getTime().getTime());
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}
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layer.getDuration().setStart(layer.getWaters().getData().get(0));
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layer.getDuration().setEnd(layer.getWaters().getData().get(layer.getWaters().getData().size() - 1));
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}
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private static void setWaterHeight(LayerDto layer, List<String> files) {
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files.parallelStream().forEach(file -> {
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Dataset ds = null;
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try {
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ds = gdal.Open(file, gdalconst.GA_ReadOnly);
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if (null == ds || 0 == ds.getRasterCount() || null == ds.GetSpatialRef()) return;
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double[] mm = new double[2];
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ds.GetRasterBand(1).ComputeRasterMinMax(mm, 0);
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layer.getExtension().setHeight(mm[0], mm[1]);
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} finally {
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if (null != ds) ds.delete();
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}
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});
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layer.getExtension().setMinHeight(getMinVal(layer.getExtension().getMinHeight() - 1, 1000));
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layer.getExtension().setMaxHeight(getMaxVal(layer.getExtension().getMaxHeight() + 1, 1000));
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}
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private static void processWaters(ResultDto dto, List<String> files, LayerDto layer) {
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for (int i = 0, c = files.size(); i < c; i++) {
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Dataset ds = null;
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try {
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ds = gdal.Open(files.get(i), gdalconst.GA_ReadOnly);
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if (null == ds || 0 == ds.getRasterCount() || null == ds.GetSpatialRef()) return;
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createWaterPng(dto, ds, layer, layer.getWaters().getData().get(i));
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} finally {
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if (null != ds) ds.delete();
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}
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}
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}
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private static void createWaterPng(ResultDto dto, Dataset ds, LayerDto layer, long ticks) {
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String waterPath = dto.getOutPath() + File.separator + "waters" + File.separator + ticks;
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File dir = new File(waterPath);
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if (!dir.exists() || !dir.isDirectory()) dir.mkdirs();
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for (int[] sizes : layer.getTerrain().getSize()) {
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String fileName = getNameWithExt(ds.GetDescription()) + "_" + sizes[0] + "_" + sizes[1];
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String tif = dto.getTemp() + File.separator + fileName + ".tif";
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Resample(ds, tif, sizes[0], sizes[1], layer);
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if (!new File(tif).exists()) continue;
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String png = waterPath + File.separator + sizes[0] + "_" + sizes[1] + ".png";
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water2Png(dto, layer, tif, png, sizes[0], sizes[1]);
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}
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}
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private static String getNameWithExt(String file) {
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return file.substring(file.lastIndexOf(File.separator) + 1, file.lastIndexOf("."));
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}
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private static void water2Png(ResultDto dto, LayerDto layer, String tif, String png, int width, int height) {
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Dataset ds = null;
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try {
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ds = gdal.Open(tif, gdalconst.GA_ReadOnly);
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if (null == ds || 0 == ds.getRasterCount()) return;
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Band band = ds.GetRasterBand(1);
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float[] buffer = new float[width * height];
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//band.ReadRaster(0, 0, width, height, buffer, width, height, 0, 0);
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band.ReadRaster(0, 0, width, height, buffer);
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float[] building = dto.getBuildings().get(width + "_" + height);
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BufferedImage image = new BufferedImage(width, height, BufferedImage.TYPE_INT_ARGB);
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double differ = layer.getExtension().getMaxHeight() - layer.getExtension().getMinHeight(), minHeight = layer.getExtension().getMinHeight();
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for (int x = 0; x < width; x++) {
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for (int y = 0; y < height; y++) {
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int offset = x + y * width;
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if (Float.isNaN(buffer[offset]) || buffer[offset] < -999 || buffer[offset] < minHeight) continue;
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if (!Float.isNaN(building[offset]) && building[offset] > -999) continue;
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int r = 0, g, b;
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if (buffer[offset] - layer.getExtension().getMaxHeight() > 0) {
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g = b = 255;
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} else {
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int val = (int) ((buffer[offset] - minHeight) / differ * 65535);
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g = val / 256;
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b = val % 256;
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}
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Color color = new Color(r, g, b, 127);
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image.setRGB(x, y, color.getRGB());
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}
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}
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savePng(image, png);
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} finally {
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if (null != ds) ds.delete();
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}
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}
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private void copeFlow(ResultDto dto, LayerDto layer) {
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List<String> vxFiles = new ArrayList<>();
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List<String> vyFiles = new ArrayList<>();
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List<String> files = getFiles(dto.getFlowPath(), ".tif");
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for (String file : files) {
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if (file.contains(File.separator + "vx")) vxFiles.add(file);
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if (file.contains(File.separator + "vy")) vyFiles.add(file);
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}
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if (null == vxFiles || null == vyFiles || vxFiles.size() != vyFiles.size() || vxFiles.size() != layer.getWaters().getData().size())
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return;
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for (int i = 0, c = vxFiles.size(); i < c; i++) {
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Dataset vxDs = null, vyDs = null;
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try {
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vxDs = gdal.Open(vxFiles.get(i), gdalconst.GA_ReadOnly);
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vyDs = gdal.Open(vyFiles.get(i), gdalconst.GA_ReadOnly);
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if (null == vxDs || 0 == vxDs.getRasterCount() || null == vxDs.GetSpatialRef() || null == vyDs || 0 == vyDs.getRasterCount() || null == vyDs.GetSpatialRef())
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return;
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createFlowPng(dto, vxDs, vyDs, layer, layer.getWaters().getData().get(i));
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} finally {
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if (null != vxDs) vxDs.delete();
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if (null != vyDs) vyDs.delete();
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}
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}
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}
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private static void createFlowPng(ResultDto dto, Dataset vxDs, Dataset vyDs, LayerDto layer, long ticks) {
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String flowPath = dto.getOutPath() + File.separator + "flows" + File.separator + ticks;
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File dir = new File(flowPath);
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if (!dir.exists() || !dir.isDirectory()) dir.mkdirs();
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for (int[] sizes : layer.getTerrain().getSize()) {
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String vxName = getNameWithExt(vxDs.GetDescription()) + "_" + sizes[0] + "_" + sizes[1];
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String vxTif = dto.getTemp() + File.separator + vxName + ".tif";
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Resample(vxDs, vxTif, sizes[0], sizes[1], layer);
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String vyName = getNameWithExt(vyDs.GetDescription()) + "_" + sizes[0] + "_" + sizes[1];
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String vyTif = dto.getTemp() + File.separator + vyName + ".tif";
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Resample(vyDs, vyTif, sizes[0], sizes[1], layer);
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if (!new File(vxTif).exists() || !new File(vyTif).exists()) continue;
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String png = flowPath + File.separator + sizes[0] + "_" + sizes[1] + ".png";
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vxyTif2Png(layer, vxTif, vyTif, png, sizes[0], sizes[1]);
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}
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}
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private static void vxyTif2Png(LayerDto layer, String vxTif, String vyTif, String png, int width, int height) {
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Dataset vxDs = null, vyDs = null;
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try {
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vxDs = gdal.Open(vxTif, gdalconst.GA_ReadOnly);
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vyDs = gdal.Open(vyTif, gdalconst.GA_ReadOnly);
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if (null == vxDs || 0 == vxDs.getRasterCount() || null == vyDs || 0 == vyDs.getRasterCount()) return;
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float[] vxBuffer = new float[width * height], vyBuffer = new float[width * height];
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vxDs.GetRasterBand(1).ReadRaster(0, 0, width, height, vxBuffer);
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vyDs.GetRasterBand(1).ReadRaster(0, 0, width, height, vyBuffer);
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createFlowPng(vxBuffer, vyBuffer, png, width, height);
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} finally {
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if (null != vxDs) vxDs.delete();
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if (null != vyDs) vyDs.delete();
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}
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}
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private static void createFlowPng(float[] vxBuffer, float[] vyBuffer, String png, int width, int height) {
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BufferedImage image = new BufferedImage(width, height, BufferedImage.TYPE_INT_ARGB);
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// 用 R通道表示，流向为归一化的二维向量（x,y），G通道表示为 x *255 , B通道表示为 y * 255
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for (int x = 0; x < width; x++) {
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for (int y = 0; y < height; y++) {
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int offset = x + y * width;
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float fx = getFloatValue(vxBuffer[offset]);
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float fy = getFloatValue(vyBuffer[offset]);
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if (Float.isNaN(fx) && Float.isNaN(fy) || (fx == 0 && fy == 0)) continue;
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fx = Float.isNaN(fx) ? 0 : fx;
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fy = Float.isNaN(fy) ? 0 : fy;
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double dr = Math.sqrt(Math.pow(fx, 2) + Math.pow(fy, 2));
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int r = (int) (dr / 4 * 255);
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int g = (int) ((fx / dr * 0.5 + 0.5) * 255);
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int b = (int) ((fy / dr * 0.5 + 0.5) * 255);
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Color color = new Color(getSafeValue(r), getSafeValue(g), getSafeValue(b), 127);
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image.setRGB(x, y, color.getRGB());
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}
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}
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savePng(image, png);
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}
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private static float getFloatValue(float val) {
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return (Float.isNaN(val) || val < -999) ? Float.NaN : val;
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}
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private static int getSafeValue(int val) {
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if (val < 0) return 0;
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if (val > 255) return 255;
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return val;
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}
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/**
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* 元数据
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*/
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private void copeLayerJson(ResultDto dto, LayerDto layer) throws IOException {
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layer.getWaters().setFiles(null);
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//String json = JSONUtil.toJsonPrettyStr(layer);
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String json = JSON.toJSONString(layer);
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String filePath = dto.getOutPath() + File.separator + "layer.json";
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FileWriter fw = new FileWriter(filePath);
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BufferedWriter bw = new BufferedWriter(fw);
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bw.write(json);
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bw.close();
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fw.close();
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}
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}
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