diff options
Diffstat (limited to 'source/blender/blenlib/intern/math_matrix.c')
-rw-r--r-- | source/blender/blenlib/intern/math_matrix.c | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/source/blender/blenlib/intern/math_matrix.c b/source/blender/blenlib/intern/math_matrix.c index ce9abc36cad..fcd017b3082 100644 --- a/source/blender/blenlib/intern/math_matrix.c +++ b/source/blender/blenlib/intern/math_matrix.c @@ -1116,6 +1116,22 @@ double determinant_m3_array_db(const double m[3][3]) m[2][0] * (m[0][1] * m[1][2] - m[0][2] * m[1][1])); } +bool invert_m2_m2(float m1[2][2], const float m2[2][2]) +{ + adjoint_m2_m2(m1, m2); + float det = determinant_m2(m2[0][0], m2[1][0], m2[0][1], m2[1][1]); + + bool success = (det != 0.0f); + if (success) { + m1[0][0] /= det; + m1[1][0] /= det; + m1[0][1] /= det; + m1[1][1] /= det; + } + + return success; +} + bool invert_m3_ex(float m[3][3], const float epsilon) { float tmp[3][3]; |