1

13693261870

2024-09-03 a9b99add3e1baa7fc49049247b8bf071e70a6005

 SimuTools/Tools/GdalHelper.cs

@@ -9,6 +9,7 @@
{
    public class GdalHelper
    {
        #region 成员变量+构造函数
        private static bool isInited;

        private static GdalHelper instance;
@@ -42,6 +43,7 @@
                }
            }
        }
        #endregion

        /// <summary>
        /// 实例
@@ -135,14 +137,14 @@
            }

            String srsName = ds.GetSpatialRef().GetName();
            if (srsName.Contains(CGCS2000))
            {
                point.TransformTo(sr4490);
            }
            else
            {
            //if (srsName.Contains(CGCS2000))
            //{
            //    point.TransformTo(sr4490);
            //}
            //else
            //{
                point.TransformTo(sr4326);
            }
            //}
            point.SwapXY();

            return point;
@@ -161,7 +163,7 @@
                ds = Gdal.Open(file, Access.GA_ReadOnly);
                if (null == ds) return;

                OSGeo.GDAL.Band band = ds.GetRasterBand(1);
                Band band = ds.GetRasterBand(1);
                if (0 == band.GetOverviewCount())
                {
                    ds.BuildOverviews("nearest", new int[] { 2, 4, 6, 8, 16 });
@@ -180,7 +182,7 @@
        /// <summary>
        /// 创建PNG
        /// </summary>
        public void CreatePng(string filePath, int width, int height, int bands = 3)
        public void CreatePng(byte[] buffer, string filePath, int width, int height, int bands = 3)
        {
            // 创建内存驱动
            OSGeo.GDAL.Driver memDriver = Gdal.GetDriverByName("MEM");
@@ -192,13 +194,6 @@
            {
                Band band = ds.GetRasterBand(i);
                band.SetRasterColorInterpretation((ColorInterp)i);
            }

            // 填充内存图像
            byte[] buffer = new byte[width * height * bands];
            for (int i = 0; i < buffer.Length; i++)
            {
                buffer[i] = (byte)(i % 256);
            }

            // 写入内存图像