1

13693261870

2024-09-30 6827092435f97dcd7bf557eb01711d24f437ce55

 src/main/java/com/se/simu/helper/GdalHelper.java

@@ -5,10 +5,7 @@
import org.gdal.gdal.Dataset;
import org.gdal.gdal.gdal;
import org.gdal.gdalconst.gdalconst;
import org.gdal.ogr.DataSource;
import org.gdal.ogr.Driver;
import org.gdal.ogr.Layer;
import org.gdal.ogr.ogr;
import org.gdal.ogr.*;
import org.gdal.osr.SpatialReference;
import org.gdal.osr.osr;

@@ -143,4 +140,63 @@
            log.error(ex.getMessage(), ex);
        }
    }

    public static Geometry getMinPoint(Dataset ds)
    {
        double[] transform = new double[6];
        ds.GetGeoTransform(transform);

        double xMin = transform[0];
        double yMin = transform[3] - ds.getRasterYSize() * transform[1];

        Geometry point = new Geometry(ogr.wkbPoint);
        point.AddPoint(xMin, yMin, 0);

        return Transform(ds, point);
    }

    public static Geometry getMaxPoint(Dataset ds)
    {
        /*
         * transform[0] 左上角x坐标
         * transform[1] 东西方向分辨率
         * transform[2] 旋转角度, 0表示图像 "北方朝上"
         *
         * transform[3] 左上角y坐标
         * transform[4] 旋转角度, 0表示图像 "北方朝上"
         * transform[5] 南北方向分辨率
         */
        double[] transform = new double[6];
        ds.GetGeoTransform(transform);

        double xMax = transform[0] + (ds.getRasterYSize() * transform[1]);
        double yMax = transform[3];

        Geometry point = new Geometry(ogr.wkbPoint);
        point.AddPoint(xMax, yMax, 0);

        return Transform(ds, point);
    }

    public static Geometry Transform(Dataset ds, Geometry point)
    {
        point.AssignSpatialReference(ds.GetSpatialRef());
        if (ds.GetSpatialRef().IsGeographic() > 0)
        {
            return point;
        }

        String srsName = ds.GetSpatialRef().GetName();
        //if (srsName.Contains(CGCS2000))
        //{
        //    point.TransformTo(sr4490);
        //}
        //else
        //{
        point.TransformTo(SR4326);
        //}
        point.SwapXY();

        return point;
    }
}