private void ReadHeader()
{
//FileCode
int fileCode = ToLocalEndian.ToInt32FromBig(_brMainFile.ReadBytes(4));
if (fileCode != 9994)
{
throw new Exception("文件不是ESRI Shape Files文件头！");
}
//Skip 20 bytes unused (5 integer)
_brMainFile.ReadBytes(20);
//File length
_fileLength = ToLocalEndian.ToInt32FromBig(_brMainFile.ReadBytes(4)) * 2;
if (_fileLength != _fsMainFile.Length)
{
throw new Exception("ESRI Shape Files文件未正确结束！");
}
//Version
int Version = ToLocalEndian.ToInt32FromLittle(_brMainFile.ReadBytes(4));
//Shape Type
int ShapeType = ToLocalEndian.ToInt32FromLittle(_brMainFile.ReadBytes(4));
_shapeType = (enumShapeType)ShapeType;
_envelope.MinX = ToLocalEndian.ToDouble64FromLittle(_brMainFile.ReadBytes(8));
_envelope.MinY = ToLocalEndian.ToDouble64FromLittle(_brMainFile.ReadBytes(8));
_envelope.MaxX = ToLocalEndian.ToDouble64FromLittle(_brMainFile.ReadBytes(8));
_envelope.MaxY = ToLocalEndian.ToDouble64FromLittle(_brMainFile.ReadBytes(8));
AdjustZeroWidthEnvelope(_envelope);
//Skip minZ,maxZ,minM,maxM
_brMainFile.ReadBytes(8 * 4);
_fileHeaderSize = _fsMainFile.Position;
}
public bool TryOpen(string filename, byte[] bytes, params object[] args)
{
_filename = filename;
if (!filename.ToUpper().EndsWith(".000"))
{
return(false);
}
if (string.IsNullOrEmpty(filename))
{
throw new NullReferenceException("new MicapsDataReader(null)");
}
if (!File.Exists(filename))
{
throw new FileNotFoundException(filename);
}
if (args == null || args.Length < 1)
{
return(false);
}
_dataTypeId = args[0].ToString(); //identify="GroundObserveData"
_dataSetting = GetDataTypeSetting(_dataTypeId); //指定_dataTypeId的所有Field
_fields = GetFields(_dataSetting); //_dataTypeId的所有Field的identify组成的[]
//检查Field的合法性
if (!CheckFieldsIsOK(filename))
{
return(false);
}
_shapeType = enumShapeType.Point;
_spatialReference = CodeCell.AgileMap.Core.SpatialReference.GetDefault();
//创建Features
_features = ConstructPoint(); //将000文件中的观测值读成features
_envelope = GetEnvelope(); //所有features的并集
return(true);
}
public EsriShapeFilesWriterII(string outFilename, enumShapeType shape)
{
try
{
if (Path.GetExtension(outFilename).ToUpper() != ".SHP")
{
throw new Exception("请输入shp文件格式的文件名！");
}
_shapeType = shape;
_mainFileName = outFilename;
string dir = Path.GetDirectoryName(outFilename);
string fname = Path.GetFileNameWithoutExtension(outFilename);
_shxFileName = Path.Combine(dir, fname + ".shx");
_dbfFileName = Path.Combine(dir, fname + ".dbf");
if (File.Exists(_mainFileName))
{
File.Delete(_mainFileName);
}
if (File.Exists(_shxFileName))
{
File.Delete(_shxFileName);
}
}
catch (Exception ex)
{
Log.WriterError(ex.Message);
}
}
protected override object ConstructFeature(BinaryReader br, int oid)
{
enumShapeType shapeType = (enumShapeType)ToLocalEndian.ToInt32FromLittle(br.ReadBytes(4));
switch (shapeType)
{
case enumShapeType.NullShape:
break;
case enumShapeType.Point:
return(ConstructPoint(br, oid));
case enumShapeType.MultiPoint:
return(ConstructMultiPoint(br, oid));
case enumShapeType.Polyline:
return(ConstructPolyline(br, oid));
case enumShapeType.PolylineM:
return(ConstructPolylineM(br, oid));
case enumShapeType.Polygon:
return(ConstructPolygon(br, oid));
default:
return(null);
}
return(null);
}
private void setRandomShapes(Canvas e, enumShapeType t, int number)
{
double canvasHeight = e.ActualHeight;
double canvasWidth = e.ActualWidth;
Shape shape = new Ellipse();
for (int count = 0; count < number; count++)
{
switch (t)
{
case enumShapeType.ELLIPSE:
shape = new Ellipse();
break;
case enumShapeType.RECTANGLE:
shape = new Rectangle();
break;
}
shape.Height = randomNumber.Next(10, 25);
shape.Width = shape.Height;
SolidColorBrush mySolidColorBrush = new SolidColorBrush();
// Describes the brush's color using RGB values.
// Each value has a range of 0-255.
mySolidColorBrush.Color = Color.FromArgb(255, (byte)randomNumber.Next(0, 255), (byte)randomNumber.Next(0, 255), (byte)randomNumber.Next(0, 255));
shape.Fill = mySolidColorBrush;
e.Children.Add(shape);
Canvas.SetLeft(shape, randomNumber.Next(0, (int)(canvasWidth - shape.Width)));
Canvas.SetTop(shape, randomNumber.Next(0, (int)(canvasHeight - shape.Height)));
}
}
public static MemoryDataSource FromXElement(XElement ele)
{
if (ele == null)
{
return(null);
}
string name = null;
if (ele.Attribute("name") != null)
{
name = ele.Attribute("name").Value;
}
string shapetype = ele.Attribute("shapetype").Value;
enumShapeType stype = enumShapeType.Point;
foreach (enumShapeType st in Enum.GetValues(typeof(enumShapeType)))
{
if (st.ToString() == shapetype)
{
stype = st;
break;
}
}
MemoryDataSource ds = new MemoryDataSource(name, stype);
if (ele.Element("ArgsOfLeveling") != null)
{
ds.SetArgOfLevel(ArgOfLeveling.FromXElement(ele.Element("ArgsOfLeveling")));
}
return(ds);
}
internal void GetArgsFromDataSource()
{
_fullEnvelope = _dataSource.GetFullEnvelope();
_fullGridCount = _dataSource.GetFullGridCount();
_coordType = _dataSource.GetCoordinateType();
_shapeType = _dataSource.GetShapeType();
_fieldNames = _dataSource.GetFieldNames();
_originalCoordType = _coordType;
}
private void SetRandomShapes(Canvas e, enumShapeType t, int number)
{
double canvasHeight = e.ActualHeight;
double canvasWidth = e.ActualWidth;
Shape shape = new Ellipse();
for (int count = 0; count < number; count++)
{
switch (t)
{
case enumShapeType.ELLIPSE:
shape = new Ellipse();
break;
case enumShapeType.RECTANGLE:
shape = new Rectangle();
break;
case enumShapeType.TRIANGLE:
Polygon temp = new Polygon();
int temp_len = randomNumber.Next(10, 25);
//10,110 60,10 110,110
System.Windows.Point Point1 = new System.Windows.Point(0, 0);
System.Windows.Point Point2 = new System.Windows.Point(7, 0);
System.Windows.Point Point3 = new System.Windows.Point(7, 7);
PointCollection myPointCollection = new PointCollection
{
Point1,
Point2,
Point3
};
temp.Points = myPointCollection;
shape = temp;
break;
}
shape.Height = randomNumber.Next(10, 25);
shape.Width = shape.Height;
SolidColorBrush mySolidColorBrush = new SolidColorBrush();
// Describes the brush's color using RGB values.
// Each value has a range of 0-255.
mySolidColorBrush.Color = Color.FromArgb(255, (byte)randomNumber.Next(0, 255), (byte)randomNumber.Next(0, 255), (byte)randomNumber.Next(0, 255));
shape.Fill = mySolidColorBrush;
e.Children.Add(shape);
Canvas.SetLeft(shape, randomNumber.Next(0, (int)(canvasWidth - shape.Width)));
Canvas.SetTop(shape, randomNumber.Next(0, (int)(canvasHeight - shape.Height)));
}
}
public MemoryDataSource(string name,
enumShapeType shapeType
)
: base(name)
{
_shapeType = shapeType;
_coordType = enumCoordinateType.Geographic;
_gridDefinition = new GridDefinition(360, 180);
_fullEnvelope = new Envelope(-180, -90, 180, 90);
_gridStateIndicator = new GridStateIndicator(_fullEnvelope.Clone() as Envelope, _gridDefinition);
_fullGridCount = _gridStateIndicator.Width * _gridStateIndicator.Height;
_grid = new Grid(0, _fullEnvelope.Clone() as Envelope, new Feature[] { });
}
public EsriShapeFilesWriter(string outFilename, Feature[] features, enumShapeType shape)
{
//检查输入是否合法
string dir = Path.GetDirectoryName(outFilename);
string mainFilename = outFilename;
string shxFilename = Path.Combine(dir, Path.GetFileNameWithoutExtension(outFilename) + ".shx");
string dbfFilename = Path.Combine(dir, Path.GetFileNameWithoutExtension(outFilename) + ".dbf");
try
{
if (!outFilename.Contains(".shp"))
{
throw new Exception("请输入shp文件格式的文件名！");
}
if (File.Exists(mainFilename))
{
File.Delete(mainFilename);
}
if (File.Exists(shxFilename))
{
File.Delete(shxFilename);
}
_shapeType = shape;
//创建文件
_fsMainFile = new FileStream(mainFilename, FileMode.OpenOrCreate, FileAccess.ReadWrite);
_bwMainFile = new BinaryWriter(_fsMainFile);
_fsShxFile = new FileStream(shxFilename, FileMode.OpenOrCreate, FileAccess.ReadWrite);
_bwShxFile = new BinaryWriter(_fsShxFile);
/*
* River.shp
* River.shx
* River.dbf
* 1、shp文件，几何形状的文件
* 2、shx文件，索引文件
* 3、dbf文件，属性数据文件
* 4、prj文件，坐标系统
*/
//write dbf file
_bwDbfFile = new DbfWriter(dbfFilename, features);
// write main file and shx file
WriteVectorDataToFiles(features);
WriteDbfEncode(dbfFilename);
}
catch (Exception ex)
{
Log.WriterError(ex.Message);
}
}
public MemoryDataSource(string name,
enumShapeType shapeType,
enumCoordinateType coordType,
Envelope fullEnvelope
)
: base(name)
{
_shapeType = shapeType;
_coordType = enumCoordinateType.Geographic;
_gridDefinition = new GridDefinition((float)(fullEnvelope.Width + float.Epsilon),
(float)(fullEnvelope.Height + float.Epsilon));
_fullEnvelope = fullEnvelope;
_gridStateIndicator = new GridStateIndicator(_fullEnvelope.Clone() as Envelope, _gridDefinition);
_fullGridCount = _gridStateIndicator.Width * _gridStateIndicator.Height;
_grid = new Grid(0, _fullEnvelope.Clone() as Envelope, new Feature[] { });
}
private void ReadBaicProperties()
{
if (_dbConnection.State != ConnectionState.Open)
{
_dbConnection.Open();
}
string sql = "select id,datatable,annotable," + _adapter.SQLToWktForShapeField("envelope") + ",featurecount,shapetype from " + BudGISMetadata.cstFeatureClassTableName +
" t where datatable = '" + _fetclassName + "'";
using (IDbCommand cmd = _dbConnection.CreateCommand())
{
cmd.CommandText = sql;
using (IDataReader dr = cmd.ExecuteReader())
{
if (dr.Read())
{
_id = _adapter.DrToString(dr, 0);
_datatable = _adapter.DrToString(dr, 1);
_annotable = _adapter.DrToString(dr, 2);
//
ShapePolygon ply = _adapter.DrToShape(dr, 3) as ShapePolygon;
if (ply != null)
{
ShapeRing ring = ply.Rings[0];
_envelope = new Envelope(ring.Points[0].X, ring.Points[2].Y, ring.Points[1].X, ring.Points[0].Y);
}
//
_fetCount = _adapter.DrToInt32(dr, 4);
//
string shapeTypeStr = _adapter.DrToString(dr, 5);
foreach (enumShapeType st in Enum.GetValues(typeof(enumShapeType)))
{
if (st.ToString() == shapeTypeStr.ToString())
{
_shapeType = st;
break;
}
}
//
}
else
{
throw new Exception("要素类\"" + _fetclassName + "\"在指定的空间数据库中不存在。");
}
}
}
}
private static ISymbol GetSymbol(string dataName, enumShapeType shapeType)
{
switch (shapeType)
{
case enumShapeType.Point:
return(new SimpleMarkerSymbol(masSimpleMarkerStyle.Circle));
case enumShapeType.Polyline:
return(new SimpleLineSymbol(Color.Blue, 1));
case enumShapeType.Polygon:
return(new SimpleFillSymbol(Color.Transparent, new SimpleLineSymbol(Color.Blue, 1)));
default:
return(null);
}
}
private void TryExport2ShapeFile(Feature[] iceLines, string shpFileName, enumShapeType shapeType)
{
int cntCount = iceLines.Length;
string tip = "正在将等值线导出为矢量文件({0}/{1})...";
int progress = 0;
float interval = 100f / cntCount;
IEsriShapeFilesWriter writer = null;
try
{
writer = new EsriShapeFilesWriterII(shpFileName, shapeType);
writer.BeginWrite();
Feature[] buffer = new Feature[1];
for (int i = 0; i < cntCount; i++)
{
if (iceLines[i] == null)
{
continue;
}
progress = (int)(Math.Floor(interval * i));
//Feature fet = GetIceLineFeature(iceLines[i], resX, resY, minX, maxY, i);
Feature fet = iceLines[i];
if (fet != null)
{
buffer[0] = fet;
writer.Write(buffer);
}
if (_progressTracker != null)
{
_progressTracker(progress, string.Format(tip, i, cntCount));
}
}
}
finally
{
if (writer != null)
{
writer.EndWriter();
}
}
}
internal static SymbolTypeItem[] GetSymbolTypeItemsByShapeType(enumShapeType shapeType)
{
SymbolTypeItem[] Items = GetAllSymbolTypeItems();
List <SymbolTypeItem> retItems = new List <SymbolTypeItem>();
foreach (SymbolTypeItem it in Items)
{
switch (shapeType)
{
case enumShapeType.Point:
case enumShapeType.MultiPoint:
if (Array.IndexOf(it.SymbolType.GetInterfaces(), typeof(IMarkerSymbol)) >= 0)
{
retItems.Add(it);
}
break;
case enumShapeType.Polyline:
case enumShapeType.PolylineM:
case enumShapeType.PolylineZ:
if (Array.IndexOf(it.SymbolType.GetInterfaces(), typeof(ILineSymbol)) >= 0)
{
retItems.Add(it);
}
break;
case enumShapeType.Polygon:
if (Array.IndexOf(it.SymbolType.GetInterfaces(), typeof(IFillSymbol)) >= 0)
{
retItems.Add(it);
}
break;
default:
continue;
}
}
return(retItems.ToArray());
}
public static string GetStringByShapeType(enumShapeType shapeType)
{
switch (shapeType)
{
case enumShapeType.Point:
return("点");
case enumShapeType.Polyline:
return("线");
case enumShapeType.Polygon:
return("多边形");
case enumShapeType.NullShape:
return("空");
case enumShapeType.MixGeomtry:
return("混合(点、线、多边形)");
default:
throw new NotImplementedException("几何形状\"" + shapeType.ToString() + "\"到字符串的转换未实现。");
}
}
private void InitDataReader()
{
_shapeType = enumShapeType.Point;
_spatialReference = CodeCell.AgileMap.Core.SpatialReference.GetDefault();
//
string[] lines = File.ReadAllLines(_fileNames[0]);
List <string> fields = new List <string>();
fields.Add("Location");
fields.AddRange(lines[4].Split(new string[] { "," }, StringSplitOptions.RemoveEmptyEntries));
_fields = fields.ToArray();
List <string> fieldValues = new List <string>();
int oId = 0; ShapePoint pt;
double lon, lat;
List <Feature> features = new List <Feature>();
foreach (string file in _fileNames)
{
lines = File.ReadAllLines(file);
string[] infos = lines[2].Split(new string[] { ",", "=" }, StringSplitOptions.RemoveEmptyEntries);
if (!double.TryParse(infos[3], out lon) || !double.TryParse(infos[5], out lat))
{
return;
}
for (int i = 5; i < lines.Length; i++)
{
pt = new ShapePoint(lon, lat);
fieldValues.Clear();
fieldValues.Add(infos[1]);
fieldValues.AddRange(lines[i].Split(new string[] { "," }, StringSplitOptions.RemoveEmptyEntries));
Feature f = new Feature(oId++, pt, _fields, fieldValues.ToArray(), null);
features.Add(f);
}
}
_features = features.ToArray();
_envelope = GetEnvelope();//所有features的并集
}
public StatInfoFetClass(enumShapeType shapeType, int featureCount, Envelope envelope)
{
ShapeType = shapeType;
FeatureCount = featureCount;
Envelope = envelope;
}
public LayerInfo(string name, string id, enumShapeType shapeType)
{
_name = name;
_id = id;
_shapeType = shapeType;
}
private string GetShapeTypeString(enumShapeType enumShapeType)
{
return(ShapeTypeToString.GetStringByShapeType(enumShapeType));
}
