public static void Write(string shpFileName, IShapeCollection shapes, bool createDbf = false, bool overwrite = false)
{
if (shapes == null || shapes.Count < 1)
{
return;
}
var directory = System.IO.Path.GetDirectoryName(shpFileName);
if (!System.IO.Directory.Exists(directory))
{
System.IO.Directory.CreateDirectory(directory);
}
ShapeType shapeType = shapes.First().Type;
using (System.IO.MemoryStream featureWriter = new System.IO.MemoryStream())
{
int recordNumber = 0;
foreach (IShape item in shapes)
{
featureWriter.Write(WriteHeaderToByte(++recordNumber, item), 0, 2 * ShapeConstants.IntegerSize);
featureWriter.Write(item.WriteContentsToByte(), 0, 2 * item.ContentLength);
}
using (System.IO.MemoryStream shpWriter = new System.IO.MemoryStream())
{
int fileLength = (int)featureWriter.Length / 2 + 50;
shpWriter.Write(WriteMainHeader(shapes, fileLength, shapeType), 0, 100);
shpWriter.Write(featureWriter.ToArray(), 0, (int)featureWriter.Length);
//var mode = overwrite ? System.IO.FileMode.Create : System.IO.FileMode.CreateNew;
var mode = Shapefile.GetMode(shpFileName, overwrite);
System.IO.FileStream stream = new System.IO.FileStream(shpFileName, mode);
shpWriter.WriteTo(stream);
stream.Close();
shpWriter.Close();
featureWriter.Close();
}
}
ShxWriter.Write(Shapefile.GetShxFileName(shpFileName), shapes, shapeType, overwrite);
if (createDbf)
{
Dbf.DbfFile.Write(Shapefile.GetDbfFileName(shpFileName), shapes.Count, overwrite);
}
}
public static IShapeCollection Process(IShapeCollection shapes, double threshold, Func <EsriPoint[], double, EsriPoint[]> method)
{
if (shapes.First().Type == ShapeType.Polygon || shapes.First().Type == ShapeType.PolygonZ)
{
var result = new List <Polygon>();
foreach (ISimplePoints feature in shapes)
{
var temp = feature.Parts.Select((i, index) => method(feature.GetPart(index), threshold)).Where(i => i != null && i.Length > 3).ToArray();
if (temp == null || temp.Length == 0 || temp.Sum(i => i.Length) == 0)
{
continue;
}
result.Add(new Polygon(temp));
}
return(new ShapeCollection <Polygon>(result));
}
else if (shapes.First().Type == ShapeType.PolyLine || shapes.First().Type == ShapeType.PolyLineZ || shapes.First().Type == ShapeType.PolyLineM)
{
var result = new List <PolyLine>();
foreach (ISimplePoints feature in shapes)
{
var temp = feature.Parts.Select((i, index) => method(feature.GetPart(index), threshold)).Where(i => i != null && i.Length > 1).ToArray();
if (temp == null || temp.Length == 0 || temp.Sum(i => i.Length) == 0)
{
continue;
}
result.Add(new PolyLine(temp));
}
return(new ShapeCollection <PolyLine>(result));
}
else
{
throw new NotImplementedException();
}
}
