Ejemplo n.º 1
0
        /// <summary>
        /// 转换geometry为坐标串
        /// </summary>
        /// <param name="geometry"></param>
        /// <param name="message">输出消息(目前是错误消息)</param>
        /// <returns>返回坐标串</returns>
        public static string ConvertGeometryToJson(IGeometry geometry, out string message)
        {
            string geomJsonStr = null;

            message = string.Empty;
            try
            {
                ITopologicalOperator topoGeom = geometry as ITopologicalOperator;
                topoGeom.Simplify();
                if (topoGeom is IPolygon polygon)
                {
                    polygon.Generalize(1);
                }

                if (geometry.SpatialReference == null || geometry.SpatialReference.Name == "Unknown")
                {
                    geometry.SpatialReference = SpatialRefUtil.GetProjectedCoordinate(esriSRProjCS4Type.esriSRProjCS_Xian1980_3_Degree_GK_CM_120E);
                }

                ESRI.ArcGIS.esriSystem.IJSONWriter jsonWriter = new ESRI.ArcGIS.esriSystem.JSONWriterClass();
                jsonWriter.WriteToString();

                ESRI.ArcGIS.Geometry.JSONConverterGeometryClass jsonCon = new ESRI.ArcGIS.Geometry.JSONConverterGeometryClass();
                jsonCon.WriteGeometry(jsonWriter, null, geometry, false);

                geomJsonStr = Encoding.UTF8.GetString(jsonWriter.GetStringBuffer());
            }
            catch (Exception ex)
            {
                LOG.Error(ex);
                message = ex.ToString();
            }
            return(geomJsonStr);
        }
Ejemplo n.º 2
0
        /// <summary>
        /// 默认西安80坐标转换
        /// </summary>
        /// <param name="x"></param>
        /// <param name="y"></param>
        /// <param name="sourceSpatialReference">原来点坐标的空间参考</param>
        /// <returns></returns>
        public static IPoint ProjectPoint(double x, double y, ISpatialReference sourceSpatialReference)
        {
            IPoint pPoint = new PointClass();

            pPoint.PutCoords(x, y);

            pPoint.SpatialReference = sourceSpatialReference;
            ISpatialReference spatialReference_New = SpatialRefUtil.GetProjectedCoordinate(esriSRProjCS4Type.esriSRProjCS_Xian1980_3_Degree_GK_CM_120E);

            pPoint.Project(spatialReference_New);

            return(pPoint);
        }