diff options
Diffstat (limited to 'source/blender/blenlib/intern/math_matrix.c')
| -rw-r--r-- | source/blender/blenlib/intern/math_matrix.c | 33 |
1 files changed, 17 insertions, 16 deletions
diff --git a/source/blender/blenlib/intern/math_matrix.c b/source/blender/blenlib/intern/math_matrix.c index 0204c3bc86c..1b4bbafdb04 100644 --- a/source/blender/blenlib/intern/math_matrix.c +++ b/source/blender/blenlib/intern/math_matrix.c @@ -848,9 +848,10 @@ bool invert_m4_m4(float inverse[4][4], float mat[4][4]) } } - temp = tempmat[i][i]; - if (temp == 0) - return 0; /* No non-zero pivot */ + if (UNLIKELY(tempmat[i][i] == 0.0f)) { + return false; /* No non-zero pivot */ + } + temp = (double)tempmat[i][i]; for (k = 0; k < 4; k++) { tempmat[i][k] = (float)((double)tempmat[i][k] / temp); inverse[i][k] = (float)((double)inverse[i][k] / temp); @@ -865,7 +866,7 @@ bool invert_m4_m4(float inverse[4][4], float mat[4][4]) } } } - return 1; + return true; } /****************************** Linear Algebra *******************************/ @@ -1149,11 +1150,11 @@ bool is_orthogonal_m3(float m[3][3]) for (i = 0; i < 3; i++) { for (j = 0; j < i; j++) { if (fabsf(dot_v3v3(m[i], m[j])) > 1.5f * FLT_EPSILON) - return 0; + return false; } } - return 1; + return true; } bool is_orthogonal_m4(float m[4][4]) @@ -1163,12 +1164,12 @@ bool is_orthogonal_m4(float m[4][4]) for (i = 0; i < 4; i++) { for (j = 0; j < i; j++) { if (fabsf(dot_v4v4(m[i], m[j])) > 1.5f * FLT_EPSILON) - return 0; + return false; } } - return 1; + return true; } bool is_orthonormal_m3(float m[3][3]) @@ -1178,12 +1179,12 @@ bool is_orthonormal_m3(float m[3][3]) for (i = 0; i < 3; i++) if (fabsf(dot_v3v3(m[i], m[i]) - 1) > 1.5f * FLT_EPSILON) - return 0; + return false; - return 1; + return true; } - return 0; + return false; } bool is_orthonormal_m4(float m[4][4]) @@ -1193,12 +1194,12 @@ bool is_orthonormal_m4(float m[4][4]) for (i = 0; i < 4; i++) if (fabsf(dot_v4v4(m[i], m[i]) - 1) > 1.5f * FLT_EPSILON) - return 0; + return false; - return 1; + return true; } - return 0; + return false; } bool is_uniform_scaled_m3(float m[3][3]) @@ -1448,7 +1449,7 @@ float mat3_to_scale(float mat[3][3]) { /* unit length vector */ float unit_vec[3]; - copy_v3_fl(unit_vec, (float)(1.0 / M_SQRT3)); + copy_v3_fl(unit_vec, (float)M_SQRT1_3); mul_m3_v3(mat, unit_vec); return len_v3(unit_vec); } @@ -1457,7 +1458,7 @@ float mat4_to_scale(float mat[4][4]) { /* unit length vector */ float unit_vec[3]; - copy_v3_fl(unit_vec, (float)(1.0 / M_SQRT3)); + copy_v3_fl(unit_vec, (float)M_SQRT1_3); mul_mat3_m4_v3(mat, unit_vec); return len_v3(unit_vec); } |