public static ZComplexDescriptor Inverse2_BPF(int sdvig, int DX)
{
//if (Form1.zComplex[k1] == null) { MessageBox.Show("FurieN zComplex[k2] == NULL"); return null; }
//int nx = Form1.zArrayPicture.width;
//if (nx % 2 != 0) nx = nx - 1; // n - должно быть четным
//int ny = 50;
//nx = 4874;
int nx = 4096;
int ny = 200;
int m = 1;
int nn = 2;
for (int i = 1; ; i++)
{
nn = nn * 2; if (nn > nx)
{
m = i; break;
}
}
int n = Convert.ToInt32(Math.Pow(2.0, m)); // N=2**m
Complex[] ArrayX = new Complex[nx]; // Комплексный массив экспоненты сдвига
Complex[] Array = new Complex[nx];
ZComplexDescriptor resultArray = new ZComplexDescriptor(nx, ny); // Re=zArrayPicture Im=0
// for (int i = 0; i < nx; i++)
// {
// double a = 2 * Math.PI * sdvig * i / nx;
// ArrayX[i] = new Complex(Math.Cos(a), -Math.Sin(a));
// }
for (int j = 0; j < ny; j++) // Преобразование Фурье
{
for (int i = 0; i < nx; i++)
{
Array[i] = new Complex(Form1.zArrayPicture.array[i, j], 0.0);
}
//for (int i = 0; i < nx; i++) { Array[i] = Array[i] * ArrayX[i]; }
Array = Furie.GetFourierTransform(Array, m);
for (int i = 0; i < nx; i++)
{
resultArray.array[i, j] = Array[i];
}
}
Complex[] ArrayY = new Complex[nx];
for (int i = sdvig, j = 0; i < sdvig + DX; i++, j++)
{
ArrayY[i] = new Complex(DX - j, DX - j);
}
for (int i = sdvig, j = 0; i > sdvig - DX; i--, j++)
{
ArrayY[i] = new Complex(DX - j, DX - j);
}
//for (int i = sdvig, j = 0; i < sdvig + DX; i++, j++) { ArrayY[nx-i] = new Complex(DX - j, DX - j); }
//for (int i = sdvig, j = 0; i > sdvig - DX; i--, j++) { ArrayY[nx-i] = new Complex(DX - j, DX - j); }
//for (int i = nx - DX, k = 0; i < nx; i++, k++) { ArrayY[i] = new Complex(k, 0); }
//for (int i = 0; i < DX; i++) { ArrayY[i] = ArrayY[i] / DX; }
//for (int i = nx - DX; i < nx; i++) { ArrayY[i] = ArrayY[i] / DX; }
//for (int i = 4004; i < 4028; i++) { ArrayY[i] = new Complex(1, 0); }
//for (int i = nx - DX; i < nx; i++) { Array[i] = new Complex(1, 0); }
for (int j = 0; j < ny; j++)
{
for (int i = 0; i < nx; i++)
{
Array[i] = resultArray.array[i, j] * ArrayY[i];
}
//for (int i = 0; i < nx; i++) { Array[i] = resultArray.array[i, j] ; }
Array = Furie.GetInverseFourierTransform(Array, m);
for (int i = 0; i < nx; i++)
{
resultArray.array[i, j] = Array[i];
}
}
return(resultArray);
}
public static ZComplexDescriptor Inverse_BPF(int k2, int sdvig, int DX)
{
int nx = 4096;
int ny = 200;
int m = 1;
int nn = 2;
for (int i = 1; ; i++)
{
nn = nn * 2; if (nn > nx)
{
m = i; break;
}
}
int n = Convert.ToInt32(Math.Pow(2.0, m)); // N=2**m
MessageBox.Show("nx: " + nx + " m: " + m);
Complex[] Array = new Complex[nx];
for (int i = 0; i < DX; i++)
{
Array[i] = new Complex(1, 0);
}
for (int i = nx - DX; i < nx; i++)
{
Array[i] = new Complex(1, 0);
}
for (int i = 0; i < DX; i++)
{
Array[i] = new Complex(DX - i, 0);
}
for (int i = nx - DX, k = 0; i < nx; i++, k++)
{
Array[i] = new Complex(k, 0);
}
for (int i = 0; i < DX; i++)
{
Array[i] = Array[i] / DX;
}
for (int i = nx - DX; i < nx; i++)
{
Array[i] = Array[i] / DX;
}
Array = Furie.GetInverseFourierTransform(Array, m);
ZComplexDescriptor resultArray = new ZComplexDescriptor(nx, ny); // Re=zArrayPicture Im=0
for (int j = 0; j < ny; j++)
{
for (int i = 0; i < nx; i++)
{
resultArray.array[i, j] = Array[i];
}
}
return(resultArray);
}