/// <summary>
/// 导入SHP文件
/// </summary>
/// <param name="sfile"></param>
private void ImportSHP(string sfile)
{
int indexext = sfile.LastIndexOf(".shp", StringComparison.OrdinalIgnoreCase);
if (indexext < 0)
{
return;
}
string dfile = sfile.Substring(0, indexext) + ".dbf";
SHPHandle hSHP = SHPHandle.Open(sfile, "rb");
DBFHandle hDBF = DBFHandle.Open(dfile, "rb");
// 读取DBF信息
Dictionary <int, Dictionary <string, object> > fieldInfos = new Dictionary <int, Dictionary <string, object> >();
int fieldCount = hDBF.GetFieldCount(); // 字段总数
for (int i = 0; i < fieldCount; i++)
{
string szTitle;
int nWidth;
int nDecimals;
FT eType = hDBF.GetFieldInfo(i, out szTitle, out nWidth, out nDecimals);
fieldInfos[i] = new Dictionary <string, object>()
{
{ "name", szTitle },
{ "width", nWidth },
{ "decimals", nDecimals },
{ "type", eType }
};
}
// 读取SHP信息
int nEntities;
SHPT nShapeType;
double[] adfMinBound = new double[4];
double[] adfMaxBound = new double[4];
hSHP.GetInfo(out nEntities, out nShapeType, adfMinBound, adfMaxBound);
Dictionary <string, object> featureCollection = new Dictionary <string, object>();
List <object> features = new List <object>();
featureCollection["type"] = "FeatureCollection";
featureCollection["features"] = features;
StreamWriter writer = new StreamWriter("山体保护线.txt", false, Encoding.UTF8);
writer.Write("{'type': 'FeatureCollection','features': [".Replace('\'', '"'));
for (int irecord = 0; irecord < nEntities; irecord++)
{
Dictionary <string, object> feature = new Dictionary <string, object>();
Dictionary <string, object> properties = new Dictionary <string, object>();
Dictionary <string, object> geometry = new Dictionary <string, object>();
feature["type"] = "Feature";
feature["id"] = irecord;
feature["properties"] = properties; // 属性
feature["geometry"] = geometry; // 图形
features.Add(feature); // 添加到要素列表
// 填写属性
for (int ifield = 0; ifield < hDBF.GetFieldCount(); ifield++)
{
FT eType = (FT)fieldInfos[ifield]["type"];
switch (eType)
{
case FT.String: {
string value = hDBF.ReadStringAttribute(irecord, ifield);
properties[fieldInfos[ifield]["name"].ToString()] = value.Trim();
}
break;
case FT.Integer: {
int value = hDBF.ReadIntegerAttribute(irecord, ifield);
properties[fieldInfos[ifield]["name"].ToString()] = value;
}
break;
case FT.Double: {
double value = hDBF.ReadDoubleAttribute(irecord, ifield);
properties[fieldInfos[ifield]["name"].ToString()] = value;
}
break;
case FT.Logical:
case FT.Invalid:
break;
default:
break;
}
}
// 填写图形
List <object> coordinates = new List <object>();
geometry["type"] = ""; //
geometry["coordinates"] = coordinates; // 坐标集合
SHPObject psShape = hSHP.ReadObject(irecord);
//
switch (psShape.nSHPType)
{
case SHPT.POINT:
case SHPT.POINTZ:
case SHPT.POINTM:
// 点数据
geometry["type"] = "Point";
break;
case SHPT.ARC:
case SHPT.ARCZ:
case SHPT.ARCM:
// 线数据
geometry["type"] = "LineString";
break;
case SHPT.POLYGON:
case SHPT.POLYGONZ:
case SHPT.POLYGONM:
// 面数据
geometry["type"] = "Polygon";
break;
default:
MessageBox.Show("暂时无法处理多点/多线数据");
throw new Exception();
}
//
if (psShape.nSHPType == SHPT.POINT ||
psShape.nSHPType == SHPT.POINTM ||
psShape.nSHPType == SHPT.POINTZ)
{
geometry["coordinates"] = new double[] { psShape.padfX[0], psShape.padfY[0] };
}
else
{
// 读取所有节点
for (int index = 0; index < psShape.panPartStart.Length; index++)
{
if (index < psShape.panPartStart.Length - 1)
{
// 普通的有开始有结束的
int start = psShape.panPartStart[index];
int end = psShape.panPartStart[index + 1];
List <object> parts = new List <object>(); // 坐标段
coordinates.Add(parts);
for (int n = start; n < end; n++)
{
double x = Math.Round(psShape.padfX[n], 6);
double y = Math.Round(psShape.padfY[n], 6);
parts.Add(new List <object>()
{
x, y
});
}
}
else
{
// 只有开始无结束的
int start = psShape.panPartStart[index];
int end = psShape.nVertices;
List <object> parts = new List <object>(); // 坐标段
coordinates.Add(parts);
for (int n = start; n < end; n++)
{
double x = Math.Round(psShape.padfX[n], 6);
double y = Math.Round(psShape.padfY[n], 6);
parts.Add(new List <object>()
{
x, y
});
}
}
}
}
//
string feature_str = Json.JsonSerialize(feature);
writer.Write(feature_str + ",");
}
writer.Write("]}");
writer.Close();
//string jsonstr = Json.JsonSerialize(featureCollection);
//richTextBox.Text = jsonstr;
richTextBox.Text = "完成.";
}
/// <summary>
/// 导入SHP文件
/// </summary>
/// <param name="sfile"></param>
private void ImportSHP(string sfile)
{
int indexext = sfile.LastIndexOf(".shp", StringComparison.OrdinalIgnoreCase);
if (indexext < 0)
{
return;
}
string dfile = sfile.Substring(0, indexext) + ".dbf";
SHPHandle hSHP = SHPHandle.Open(sfile, "rb");
DBFHandle hDBF = DBFHandle.Open(dfile, "rb");
// 读取DBF信息
Dictionary <int, Dictionary <string, object> > fieldInfos = new Dictionary <int, Dictionary <string, object> >();
int fieldCount = hDBF.GetFieldCount(); // 字段总数
for (int i = 0; i < fieldCount; i++)
{
string szTitle;
int nWidth;
int nDecimals;
FT eType = hDBF.GetFieldInfo(i, out szTitle, out nWidth, out nDecimals);
fieldInfos[i] = new Dictionary <string, object>()
{
{ "name", szTitle },
{ "width", nWidth },
{ "decimals", nDecimals },
{ "type", eType }
};
}
// 读取SHP信息
int nEntities;
SHPT nShapeType;
double[] adfMinBound = new double[4];
double[] adfMaxBound = new double[4];
hSHP.GetInfo(out nEntities, out nShapeType, adfMinBound, adfMaxBound);
Dictionary <string, object> featureCollection = new Dictionary <string, object>();
List <object> features = new List <object>();
featureCollection["type"] = "FeatureCollection";
featureCollection["features"] = features;
for (int irecord = 0; irecord < nEntities; irecord++)
{
Dictionary <string, object> feature = new Dictionary <string, object>();
Dictionary <string, object> properties = new Dictionary <string, object>();
Dictionary <string, object> geometry = new Dictionary <string, object>();
feature["type"] = "Feature";
feature["id"] = irecord;
feature["properties"] = properties; // 属性
feature["geometry"] = geometry; // 图形
features.Add(feature); // 添加到要素列表
// 填写属性
for (int ifield = 0; ifield < hDBF.GetFieldCount(); ifield++)
{
FT eType = (FT)fieldInfos[ifield]["type"];
switch (eType)
{
case FT.String: {
string value = hDBF.ReadStringAttribute(irecord, ifield);
properties[fieldInfos[ifield]["name"].ToString()] = value.Trim();
}
break;
case FT.Integer: {
int value = hDBF.ReadIntegerAttribute(irecord, ifield);
properties[fieldInfos[ifield]["name"].ToString()] = value;
}
break;
case FT.Double: {
double value = hDBF.ReadDoubleAttribute(irecord, ifield);
properties[fieldInfos[ifield]["name"].ToString()] = value;
}
break;
case FT.Logical:
case FT.Invalid:
break;
default:
break;
}
}
// 填写图形
List <object> coordinates = new List <object>();
geometry["type"] = "Polygon"; // < 这里要修改
geometry["coordinates"] = coordinates; // 坐标集合
SHPObject psShape = hSHP.ReadObject(irecord);
// 读取所有节点
for (int index = 0; index < psShape.panPartStart.Length; index++)
{
if (index < psShape.panPartStart.Length - 1)
{
// 普通的有开始有结束的
int start = psShape.panPartStart[index];
int end = psShape.panPartStart[index + 1];
List <object> parts = new List <object>(); // 坐标段
coordinates.Add(parts);
for (int n = start; n < end; n++)
{
double x = Math.Round(psShape.padfX[n], 6);
double y = Math.Round(psShape.padfY[n], 6);
parts.Add(new List <object>()
{
x, y
});
}
}
else
{
// 只有开始无结束的
int start = psShape.panPartStart[index];
int end = psShape.nVertices;
List <object> parts = new List <object>(); // 坐标段
coordinates.Add(parts);
for (int n = start; n < end; n++)
{
double x = Math.Round(psShape.padfX[n], 6);
double y = Math.Round(psShape.padfY[n], 6);
parts.Add(new List <object>()
{
x, y
});
}
}
}
//
}
string jsonstr = Json.JsonSerialize(featureCollection);
richTextBox.Text = jsonstr;
}
