- *y0 = M[0] * x0 + M[3] * x1 + M[6] * x2;
- *y1 = M[1] * x0 + M[4] * x1 + M[7] * x2;
- *y2 = M[2] * x0 + M[5] * x1 + M[8] * x2;
-}
-
-void invert_3x3_matrix(const Matrix3x3 m, Matrix3x3 result)
-{
- double inv_det = 1.0 / (
- m[6] * m[1] * m[5] - m[6] * m[2] * m[4] -
- m[3] * m[1] * m[8] + m[3] * m[2] * m[7] +
- m[0] * m[4] * m[8] - m[0] * m[5] * m[7]);
-
- result[0] = inv_det * (m[4] * m[8] - m[5] * m[7]);
- result[1] = inv_det * (m[2] * m[7] - m[1] * m[8]);
- result[2] = inv_det * (m[1] * m[5] - m[2] * m[4]);
-
- result[3] = inv_det * (m[6] * m[5] - m[3] * m[8]);
- result[4] = inv_det * (m[0] * m[8] - m[6] * m[2]);
- result[5] = inv_det * (m[3] * m[2] - m[0] * m[5]);
-
- result[6] = inv_det * (m[3] * m[7] - m[6] * m[4]);
- result[7] = inv_det * (m[6] * m[1] - m[0] * m[7]);
- result[8] = inv_det * (m[0] * m[4] - m[3] * m[1]);
+ printf("%6.4f %6.4f %6.4f\n", m(0,0), m(0,1), m(0,2));
+ printf("%6.4f %6.4f %6.4f\n", m(1,0), m(1,1), m(1,2));
+ printf("%6.4f %6.4f %6.4f\n", m(2,0), m(2,1), m(2,2));
+ printf("\n");