/// <summary>
/// Reads Polygon shapefile
/// </summary>
/// <param name="stream"></param>
/// <returns></returns>
protected IList ReadPolygonData(Stream stream)
{
IList list = new ArrayList();
// Jump to first header
stream.Seek(100, SeekOrigin.Begin);
// Read big endian informations
using (BigEndianBinaryReader beReader = new BigEndianBinaryReader(stream))
{
// Read little endian informations
using (BinaryReader reader = new BinaryReader(stream))
{
// For each header
while (stream.Position < stream.Length)
{
ReadFeatureHeader(beReader);
shapeReader.ReadBoundingBox(reader);
int[] indexParts = null;
int numParts = shapeReader.ReadNumParts(reader);
int numPoints = shapeReader.ReadNumPoints(reader);
indexParts = shapeReader.ReadIndexParts(reader, numParts);
ICoordinate[] coordinates = shapeReader.ReadCoordinates(reader, numPoints);
if (numParts == 1)
{
list.Add(shapeReader.CreateSimpleSinglePolygon(coordinates));
}
else
{
list.Add(shapeReader.CreateSingleOrMultiPolygon(numPoints, indexParts, coordinates));
}
}
}
}
return(list);
}
