public Sec(string fn)
{
using (FileStream fs = new FileStream(fn, FileMode.Open, FileAccess.Read))
{
using (BinaryReader br = new BinaryReader(fs))
{
int f1 = br.ReadInt32();
int f2 = br.ReadInt32();
if (f1 == 1 && f2 == 1)
{
version = 2;
}
else if (f1 == 2 && f2 == 1)
{
version = 3;
}
else
{
Debug.Assert(false);
}
while (br.ReadInt32() != 0x3150414d)
{
;
}
/////////////////////////////////////////////////////////////////
br.BaseStream.Seek(7 * 4, SeekOrigin.Current);
/////////////////////////////////////////////////////////////////
num_points = br.ReadInt32();
num_borders = br.ReadInt32();
num_districts = br.ReadInt32();
num_xdistricts = br.ReadInt32();
/////////////////////////////////////////////////////////////////
points = new FPoint[num_points];
for (int i = 0; i < num_points; i++)
{
FPoint fp = new FPoint();
fp.idx = i;
fp.x = br.ReadSingle();
fp.y = br.ReadSingle();
points[i] = fp;
}
CalculateMinMax(); //计算最大最小值
/////////////////////////////////////////////////////////////////
borders = new Border[num_borders];
for (int i = 0; i < num_borders; i++)
{
Border bb = new Border();
bb.idx = i;
int idx = br.ReadInt32();
bb.from = points[idx];
idx = br.ReadInt32();
bb.to = points[idx];
bb.belong_district = br.ReadInt32();
bb.neighbor_district = br.ReadInt32();
br.ReadInt32(); //DO NOT KNOW ABOUT IT YET
borders[i] = bb;
}
/////////////////////////////////////////////////////////////////
districts = new District[num_districts];
for (int i = 0; i < num_districts; i++)
{
District dd = new District();
dd.num_borders = br.ReadInt32();
dd.attributes = br.ReadBytes(8);
dd.tanX = br.ReadSingle();
dd.tanY = br.ReadSingle();
dd.M = br.ReadSingle();
if (version == 2)
{
dd.not_sure = br.ReadBytes(24);
}
else if (version == 3)
{
dd.not_sure = br.ReadBytes(16);
}
dd.minx = br.ReadSingle();
dd.miny = br.ReadSingle();
dd.minz = br.ReadSingle();
dd.maxx = br.ReadSingle();
dd.maxy = br.ReadSingle();
dd.maxz = br.ReadSingle();
dd.borders = new Border[dd.num_borders];
for (int j = 0; j < dd.num_borders; j++)
{
int idx = br.ReadInt32();
dd.borders[j] = borders[idx];
}
districts[i] = dd;
}
}
}
ValidateSecData(); //这个修正非常强！效果极好！
}