/// <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);
}
/// <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);
}