public static GrdFile Read(FileInfo fileInfo)
{
var grd = new GrdFile(fileInfo);
using (var reader = new BinaryReader(fileInfo.OpenRead()))
{
grd.Info = new string(reader.ReadChars(4));
grd.Row = reader.ReadInt16();
grd.Column = reader.ReadInt16();
grd.MinX = reader.ReadDouble();
grd.MaxX = reader.ReadDouble();
grd.MinY = reader.ReadDouble();
grd.MaxY = reader.ReadDouble();
grd.MinZ = reader.ReadDouble();
grd.MaxZ = reader.ReadDouble();
grd.Data = new float[grd.Row, grd.Column];
for (int i = grd.Row - 1; i >= 0; i--)
{
for (int j = 0; j < grd.Column; j++)
{
grd.Data[j, i] = reader.ReadSingle();
}
}
}
return(grd);
}
public static void DrawLine(GrdFile grd, int x1, int y1, int x2, int y2)
{
Preconditions.CheckOutOfRange(x1, 0, 944, "x1");
Preconditions.CheckOutOfRange(y1, 0, 944, "y1");
Preconditions.CheckOutOfRange(x2, 0, 944, "x2");
Preconditions.CheckOutOfRange(y2, 0, 944, "y2");
int dx = Math.Abs(x2 - x1), sx = x1 < x2 ? 1 : -1;
int dy = Math.Abs(y2 - y1), sy = y1 < y2 ? 1 : -1;
var err = (dx > dy ? dx : -dy) / 2;
while (true)
{
grd.Data[x1, y1] = -1;
if (x1 == x2 && y1 == y2)
{
break;
}
var e2 = err;
if (e2 > -dx)
{
err -= dy; x1 += sx;
}
if (e2 < dy)
{
err += dx; y1 += sy;
}
}
}
public static GrdFile NewInstance()
{
GrdFile grd = new GrdFile();
return(grd);
}
