/// <summary>
/// 将传入的JSONstring型geometry转化为指定格式
/// </summary>
/// <param name="inString">JSONstring型geometry</param>
/// <param name="outType">输出的geometry类型</param>
/// <returns>Hashtable 或 string</returns>
public static object Transform(string inString, objectType outType)
{
object ht;
try
{
geometryEntity geo = formatToEntity(inString);
ht = formatToGeometry(geo, outType);
}
catch (Exception e)
{
throw e;
}
return(ht);
}
/// <summary>
/// 将传入的Hashtable转换为指定格式的geometry
/// </summary>
/// <param name="inHastTable">传入的Hashtable</param>
/// <param name="outType">Enum 输出的geometry类型</param>
/// <returns>Hashtable 或 string</returns>
public static object Transform(Hashtable inHastTable, objectType outType)
{
object ht;
try
{
geometryEntity geo = formatToEntity(inHastTable);
ht = formatToGeometry(geo, outType);
}
catch (Exception e)
{
throw e;
}
return(ht);
}
/// <summary>
/// 将geometries对象转化为指定layout的geometry
/// </summary>
/// <param name="geometry">geometry实体对象</param>
/// <param name="layout">Enum 输出geometry类型</param>
/// <returns>string 或 hashtable</returns>
private static object formatToGeometry(geometryEntity geometry, objectType layout)
{
Hashtable resultht = new Hashtable();
string resultgeostr = "";
//转换为esriGeometries
if (layout == objectType.esriGeometries)
{
Hashtable wkidht = new Hashtable();
wkidht.Add("wkid", geometry.wkid);
//点
if (geometry.type == geometryType.point)
{
Hashtable geoht = new Hashtable();
geoht.Add("x", geometry.coordinates[0]);
geoht.Add("y", geometry.coordinates[1]);
geoht.Add("spatialReference", wkidht);
ArrayList list = new ArrayList();
list.Add(geoht);
resultht.Add("geometryType", "esriGeometryPoint");
resultht.Add("geometries", list);
}
//线 和 面
else if (geometry.type == geometryType.line || geometry.type == geometryType.polygon)
{
string geotype = "";
string geoname = "";
if (geometry.type == geometryType.line)
{
geotype = "esriGeometryPolyline";
geoname = "paths";
}
else
{
geotype = "esriGeometryPolygon";
geoname = "rings";
}
Hashtable geoht = new Hashtable();
geoht.Add(geoname, geometry.coordinates);
geoht.Add("spatialReference", wkidht);
ArrayList list = new ArrayList();
list.Add(geoht);
resultht.Add("geometryType", geotype);
resultht.Add("geometries", list);
}
resultgeostr = JSON.JsonEncode(resultht);
}
//转换为normalGeometries 或 simpleGeometries
else if (layout == objectType.normalGeometries || layout == objectType.simpleGeometries)
{
Hashtable wkidht = new Hashtable();
wkidht.Add("wkid", geometry.wkid);
//点
if (geometry.type == geometryType.point)
{
if (layout == objectType.normalGeometries)
{
resultht.Add("type", "point");
}
resultht.Add("x", geometry.coordinates[0]);
resultht.Add("y", geometry.coordinates[1]);
resultht.Add("spatialReference", wkidht);
}
//线 和 面
else if (geometry.type == geometryType.line || geometry.type == geometryType.polygon)
{
string geotype = "";
string geoname = "";
string _name = "";
if (geometry.type == geometryType.line)
{
geotype = "polyline";
geoname = "paths";
_name = "_path";
}
else
{
geotype = "polygon";
geoname = "rings";
_name = "_ring";
}
if (layout == objectType.normalGeometries)
{
resultht.Add("type", geotype);
}
resultht.Add(geoname, geometry.coordinates);
if (layout == objectType.normalGeometries)
{
resultht.Add(_name, "0");
}
resultht.Add("spatialReference", wkidht);
if (layout == objectType.normalGeometries && geometry.type == geometryType.polygon)
{
resultht.Add("_centroid", "null");
resultht.Add("_extent", "null");
}
}
resultgeostr = JSON.JsonEncode(resultht);
}
//转化为STGeometries
else if (layout == objectType.STGeometries)
{
//点
if (geometry.type == geometryType.point)
{
resultgeostr = $"POINT({geometry.coordinates[0]} {geometry.coordinates[1]})";
}
//线
else if (geometry.type == geometryType.line)
{
string pointstr = "";
//循环线
for (int i = 0; i < geometry.coordinates.Count; i++)
{
ArrayList linelist = geometry.coordinates[i] as ArrayList;
pointstr += "(";
//循环线内点
for (int ii = 0; ii < linelist.Count; ii++)
{
pointstr += $"{(linelist[ii] as ArrayList)[0]} {(linelist[ii] as ArrayList)[1]},";
}
pointstr = pointstr.TrimEnd(',');
pointstr += "),";
}
pointstr = pointstr.TrimEnd(',');
if (geometry.coordinates.Count > 1)
{
resultgeostr = "MULTILINESTRING(" + pointstr + ")";
}
else
{
resultgeostr = "LINESTRING" + pointstr;
}
}
//面
else if (geometry.type == geometryType.polygon)
{
string pointstr = "";
//循环线
for (int i = 0; i < geometry.coordinates.Count; i++)
{
ArrayList linelist = geometry.coordinates[i] as ArrayList;
pointstr += "((";
//循环线内点
for (int ii = 0; ii < linelist.Count; ii++)
{
pointstr += $"{(linelist[ii] as ArrayList)[0]} {(linelist[ii] as ArrayList)[1]},";
}
pointstr = pointstr.TrimEnd(',');
pointstr += ")),";
}
pointstr = pointstr.TrimEnd(',');
if (geometry.coordinates.Count > 1)
{
resultgeostr = "MULTIPOLYGON(" + pointstr + ")";
}
else
{
resultgeostr = "POLYGON" + pointstr;
}
}
}
//转换为hashTableGeometries
else if (layout == objectType.hashTableGeometries)
{
//面 或 线
if (geometry.type == geometryType.polygon || geometry.type == geometryType.line)
{
string typename = "";
string name = "";
string _name = "";
if (geometry.type == geometryType.polygon)
{
typename = "polygon";
name = "rings";
_name = "_ring";
}
else
{
typename = "polyline";
name = "paths";
_name = "_path";
}
Hashtable wkidht = new Hashtable();
wkidht.Add("wkid", geometry.wkid);
wkidht.Add("latestWkid", geometry.wkid);
Hashtable geoht = new Hashtable();
geoht.Add("type", typename);
geoht.Add(name, geometry.coordinates);
geoht.Add(_name, "0");
geoht.Add("spatialReference", wkidht);
resultht.Add("geometry", geoht);
}
//点
else if (geometry.type == geometryType.point)
{
Hashtable wkidht = new Hashtable();
wkidht.Add("wkid", geometry.wkid);
wkidht.Add("latestWkid", geometry.wkid);
Hashtable geoht = new Hashtable();
geoht.Add("type", "point");
geoht.Add("x", geometry.coordinates[0]);
geoht.Add("y", geometry.coordinates[1]);
geoht.Add("spatialReference", wkidht);
resultht.Add("geometry", geoht);
}
return(resultht);
}
return(resultgeostr);
}
