diff options
Diffstat (limited to 'source/blender/blenkernel/intern/constraint.c')
-rw-r--r-- | source/blender/blenkernel/intern/constraint.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/source/blender/blenkernel/intern/constraint.c b/source/blender/blenkernel/intern/constraint.c index 766d0f5dd2e..826c79c3764 100644 --- a/source/blender/blenkernel/intern/constraint.c +++ b/source/blender/blenkernel/intern/constraint.c @@ -1635,6 +1635,16 @@ static void rotlimit_evaluate(bConstraint *con, bConstraintOb *cob, ListBase *UN float eul[3]; float size[3]; + /* This constraint is based on euler rotation math, which doesn't work well with shear. + * The Y axis is chosen as the main one because constraints are most commonly used on bones. + * This also allows using the constraint to simply remove shear. */ + orthogonalize_m4_stable(cob->matrix, 1, false); + + /* Only do the complex processing if some limits are actually enabled. */ + if (!(data->flag & (LIMIT_XROT | LIMIT_YROT | LIMIT_ZROT))) { + return; + } + /* Select the Euler rotation order, defaulting to the owner value. */ short rot_order = cob->rotOrder; |