private List <Polygon> ReadPolygon(int shxLength, byte[] shpArray, byte[] shxArray)
{
int count = (shxLength - 100) / 8;
int offset = 0;
List <Polygon> polyList = new List <Polygon> ();
CoordConversion cc = new CoordConversion();
for (int i = 0; i < count; i++)
{
if ((i % 100) == 0)
{
EventControl.Instance().SendEvent(new ProgressEventArgs(null, "PB_OPER", i, count));
}
offset = BitConverter.ToInt32(shxArray, 100 + 8 * i);
offset = Swap(offset) * 2 + 8; // BigEndian, Word(16bit) 단위 // SHP 파일의 컨텐츠 위치
int shapeType = BitConverter.ToInt32(shpArray, offset);
int nParts = BitConverter.ToInt32(shpArray, offset + 36);
int nPoints = BitConverter.ToInt32(shpArray, offset + 40);
if (shapeType != 0)
{
Polygon poly = new Polygon(nParts, nPoints);
poly.shapeType = BitConverter.ToInt32(shpArray, offset);
poly.box[0].x = BitConverter.ToDouble(shpArray, offset + 4 + 8 * 0);
poly.box[0].y = BitConverter.ToDouble(shpArray, offset + 4 + 8 * 1);
poly.box[0].xy2ll();
poly.box[1].x = BitConverter.ToDouble(shpArray, offset + 4 + 8 * 2);
poly.box[1].y = BitConverter.ToDouble(shpArray, offset + 4 + 8 * 3);
poly.box[1].xy2ll();
for (int j = 0; j < nParts; j++) // Parts
{
poly.parts[j] = BitConverter.ToInt32(shpArray, offset + 44 + 4 * j);
}
for (int j = 0; j < nPoints; j++)
{
poly.points[j].x = BitConverter.ToDouble(shpArray, offset + 44 + 4 * nParts + 16 * j);
poly.points[j].y = BitConverter.ToDouble(shpArray, offset + 44 + 4 * nParts + 16 * j + 8);
poly.points[j].xy2ll();
}
poly.CalcCenter();
polyList.Add(poly);
}
}
////// 폴리곤 읽기 끝
EventControl.Instance().SendEvent(new ProgressEventArgs(null, "PB_OPER", count, count));
return(polyList);
}
public void xy2ll()
{
CoordConversion cc = new CoordConversion();
LatLon coordi = cc.Tm2Geo(x, y);
this.lat = coordi.lat * 180.0 / Math.PI;;
this.lon = coordi.lon * 180.0 / Math.PI;;
}