diff options
Diffstat (limited to 'intern/cycles/util/util_transform.cpp')
| -rw-r--r-- | intern/cycles/util/util_transform.cpp | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/intern/cycles/util/util_transform.cpp b/intern/cycles/util/util_transform.cpp index 70ee13d96d7..4eee024990f 100644 --- a/intern/cycles/util/util_transform.cpp +++ b/intern/cycles/util/util_transform.cpp @@ -251,6 +251,13 @@ void transform_motion_decompose(MotionTransform *decomp, const MotionTransform * transform_decompose(&decomp->pre, &motion->pre); transform_decompose(&decomp->mid, mid); transform_decompose(&decomp->post, &motion->post); + + /* ensure rotation around shortest angle, negated quaternions are the same + * but this means we don't have to do the check in quat_interpolate */ + if(dot(decomp->mid.x, decomp->post.x) < 0.0f) + decomp->mid.x = -decomp->mid.x; + if(dot(decomp->pre.x, decomp->mid.x) < 0.0f) + decomp->pre.x = -decomp->pre.x; } CCL_NAMESPACE_END |