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Added a comment to our use of the term 'adjoint' in BLI_math.

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In modern usage this means the conjugate transpose, but we stick to
the classical usage (i.e. adjugate matrix), like Eigen does.
This commit is contained in:
Lukas Tönne 2015-12-07 12:35:36 +01:00
parent 9e0757a367
commit e65c647912
1 changed files with 4 additions and 0 deletions
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source/blender/blenlib/BLI_math_matrix.h
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@ -173,6 +173,10 @@ bool is_orthonormal_m4(float mat[4][4]);
bool is_uniform_scaled_m3(float mat[3][3]);
bool is_uniform_scaled_m4(float m[4][4]);
/* Note: 'adjoint' here means the adjugate (adjunct, "classical adjoint") matrix!
* Nowadays 'adjoint' usually refers to the conjugate transpose,
* which for real-valued matrices is simply the transpose.
*/
void adjoint_m2_m2(float R[2][2], float A[2][2]);
void adjoint_m3_m3(float R[3][3], float A[3][3]);
void adjoint_m4_m4(float R[4][4], float A[4][4]);