public ShapeFileRW(string filename)
{
shapefilename = filename;
FileStream fsr = new FileStream(shapefilename, FileMode.Open);
BinaryReader br = new BinaryReader(fsr);
byte[] buff = br.ReadBytes(Marshal.SizeOf(typeof(ShapeFileHeader)));
GCHandle handle = GCHandle.Alloc(buff, GCHandleType.Pinned);
shapefileheader = (ShapeFileHeader)Marshal.PtrToStructure(handle.AddrOfPinnedObject(), typeof(ShapeFileHeader));
handle.Free();//Give control of the buffer back to the GC
ShapeType = br.ReadInt32();
buff = br.ReadBytes(Marshal.SizeOf(typeof(ShapeFileExtent)));
handle = GCHandle.Alloc(buff, GCHandleType.Pinned);
shapefileextent = (ShapeFileExtent)Marshal.PtrToStructure(handle.AddrOfPinnedObject(), typeof(ShapeFileExtent));
handle.Free();//Give control of the buffer back to the GC
LayerExtent = new MapExtent(shapefileextent.Xmin, shapefileextent.Xmax,
shapefileextent.Ymin, shapefileextent.Ymax);
ReadSpatialObject(br);
br.Close();
fsr.Close();
}
public MapPoint(double _x, double _y)
{
thispoint = new SimpleMapPoint(_x, _y);
ObjectType = SPATIALOBJECTTYPE.POINT;
Centroid = new SimpleMapPoint(_x, _y);
ObjectExtent = new MapExtent(thispoint, thispoint);
}
public MapPolygon(SimpleMapPoint[] _points)
{
points = _points;
ObjectType = SPATIALOBJECTTYPE.POLYGON;
Centroid = MapExtent.getCentroid(_points);
ObjectExtent = new MapExtent(_points);
Init();
}
private void Init()
{
ObjectType = SPATIALOBJECTTYPE.LINE;
Centroid = MapExtent.getCentroid(points);
ObjectExtent = new MapExtent(points);
}