c# - SharpMap 使用 GeoAPI.Geometries 选择几何

Question

您好我正在尝试创建一个函数，该函数将选择图层几何形状并更改其颜色或突出显示它。

我找到了这个FindGeoNearPoint函数，但它处理的是旧SharpMap.Geometries的 whih 不再存在，并已被 GeoAPI.Geometries 取代。

如何更改FindGeoNearPoint函数以使用 GeoAPI

这是我的尝试

     public SharpMap.Data.FeatureDataRow FindGeoNearPoint(GeoAPI.Geometries.IPoint pos, SharpMap.Layers.VectorLayer layer, double amountGrow)
    {

        GeoAPI.Geometries.Envelope bbox = new GeoAPI.Geometries.Envelope();
        SharpMap.Data.FeatureDataSet ds = new SharpMap.Data.FeatureDataSet();

        layer.DataSource.ExecuteIntersectionQuery(bbox, ds);

        DataTable tbl = ds.Tables[0] as SharpMap.Data.FeatureDataTable;

        NetTopologySuite.IO.WKTReader reader = new NetTopologySuite.IO.WKTReader();

        GeoAPI.Geometries.IGeometry point = reader.Read(pos.ToString());

        if (tbl.Rows.Count == 0)

            return null;



        double distance = point.Distance(reader.Read((tbl.Rows[0] as SharpMap.Data.FeatureDataRow).Geometry.ToString()));

        SharpMap.Data.FeatureDataRow selectedFeature = tbl.Rows[0] as SharpMap.Data.FeatureDataRow;



        if (tbl.Rows.Count > 1)

            for (int i = 1; i < tbl.Rows.Count; i++)
            {

                GeoAPI.Geometries.IGeometry line = reader.Read((tbl.Rows[i] as SharpMap.Data.FeatureDataRow).Geometry.ToString());

                if (point.Distance(line) < distance)
                {

                    distance = point.Distance(line);

                    selectedFeature = tbl.Rows[i] as SharpMap.Data.FeatureDataRow;

                }

            }

        return selectedFeature;

    }