/// <summary>
/// 通过新旧坐标表构造，三个点以上
/// </summary>
/// <param name="pold">旧坐标表</param>
/// <param name="pnew">新坐标表</param>
public CoordinateTQ(List <_3D_Point> pold, List <_3D_Point> pnew)
{
para = new TransParam();
Matrix B = new Matrix(pold.Count * 3, 8);
Matrix l = new Matrix(B.Row, 1);
Matrix Bx = new Matrix(1, 8);
Matrix w = new Matrix(1, 1);
Matrix x;
do
{
double q0 = para.q0,
q1 = para.q1,
q2 = para.q2,
q3 = para.q3,
lambda = para.lambda,
X0 = para.X0,
Y0 = para.Y0,
Z0 = para.Z0,
a1 = q0 * q0 + q1 * q1 - q2 * q2 - q3 * q3,
a2 = 2 * (q1 * q2 - q0 * q3),
a3 = 2 * (q1 * q3 + q0 * q2),
b1 = 2 * (q1 * q2 + q0 * q3),
b2 = q0 * q0 - q1 * q1 + q2 * q2 - q3 * q3,
b3 = 2 * (q2 * q3 - q0 * q1),
c1 = 2 * (q1 * q3 - q0 * q2),
c2 = 2 * (q2 * q3 + q0 * q1),
c3 = q0 * q0 - q1 * q1 - q2 * q2 + q3 * q3;
Bx[0, 0] = q0;
Bx[0, 1] = q1;
Bx[0, 2] = q2;
Bx[0, 3] = q3;
w[0, 0] = (1 - (q0 * q0 + q1 * q1 + q2 * q2 + q3 * q3)) / 2;
for (int i = 0; i < pold.Count; i++)
{
int row0 = 3 * i;
double X = pold[i].X,
Y = pold[i].Y,
Z = pold[i].Z;
B[row0, 0] = 2 * lambda * (q0 * X - q3 * Y + q2 * Z);
B[row0, 1] = 2 * lambda * (q1 * X + q2 * Y + q3 * Z);
B[row0, 2] = 2 * lambda * (-q2 * X + q1 * Y + q0 * Z);
B[row0, 3] = 2 * lambda * (-q3 * X - q0 * Y + q1 * Z);
B[row0, 4] = a1 * X + a2 * Y + a3 * Z;
B[row0, 5] = 1;
B[row0 + 1, 0] = 2 * lambda * (q3 * X + q0 * Y - q1 * Z);
B[row0 + 1, 1] = 2 * lambda * (q2 * X - q1 * Y - q0 * Z);
B[row0 + 1, 2] = 2 * lambda * (q1 * X + q2 * Y + q3 * Z);
B[row0 + 1, 3] = 2 * lambda * (q0 * X - q3 * Y + q2 * Z);
B[row0 + 1, 4] = b1 * X + b2 * Y + b3 * Z;
B[row0 + 1, 6] = 1;
B[row0 + 2, 0] = 2 * lambda * (-q2 * X + q1 * Y + q0 * Z);
B[row0 + 2, 1] = 2 * lambda * (q3 * X + q0 * Y - q1 * Z);
B[row0 + 2, 2] = 2 * lambda * (-q0 * X + q3 * Y - q2 * Z);
B[row0 + 2, 3] = 2 * lambda * (q1 * X + q2 * Y + q3 * Z);
B[row0 + 2, 4] = c1 * X + c2 * Y + c3 * Z;
B[row0 + 2, 7] = 1;
l[row0, 0] = pnew[i].X - (X0 + lambda * (a1 * X + a2 * Y + a3 * Z));
l[row0 + 1, 0] = pnew[i].Y - (Y0 + lambda * (b1 * X + b2 * Y + b3 * Z));
l[row0 + 2, 0] = pnew[i].Z - (Z0 + lambda * (c1 * X + c2 * Y + c3 * Z));
}
var N1 = Matrix.ColumnCombine(B.T() * B, Bx.T());
var N2 = Matrix.ColumnCombine(Bx, Matrix.Zeros(Bx.Row, Bx.Row));
var N = Matrix.RowCombine(N1, N2);
var W = Matrix.RowCombine(B.T() * l, w);
var xx = N.Inverse() * W;
x = xx.SubRMatrix(0, B.Column - 1);
para.q0 += x[0, 0];
para.q1 += x[1, 0];
para.q2 += x[2, 0];
para.q3 += x[3, 0];
para.lambda += x[4, 0];
para.X0 += x[5, 0];
para.Y0 += x[6, 0];
para.Z0 += x[7, 0];
} while (!Terminate(x));
}
/// <summary>
/// 通过变换参数构造
/// </summary>
/// <param name="p">变换参数</param>
public CoordinateTQ(TransParam p)
{
para = p;
}
