Fix View Roll failure to align the quaternion to the view-axis

View roll checked if the resulting roll was close to a view axis
but didn't write the aligned quaternion back to the final result.
Add ED_view3d_quat_to_axis_view_and_reset_quat since most callers
to ED_view3d_quat_to_axis_view will reset the quaternion when a view
aligned axis is found.

1 files changed, 10 insertions, 0 deletions

diff --git a/source/blender/editors/include/ED_view3d.h b/source/blender/editors/include/ED_view3d.h
index 1e9b68c0920..51fd8e6c533 100644
--- a/source/blender/editors/include/ED_view3d.h
+++ b/source/blender/editors/include/ED_view3d.h
@@ -1064,6 +1064,16 @@ bool ED_view3d_quat_to_axis_view(const float viewquat[4],
                                  float epsilon,
                                  char *r_view,
                                  char *r_view_axis_rotation);
+/**
+ * A version of #ED_view3d_quat_to_axis_view that updates `viewquat`
+ * if it's within `epsilon` to an axis-view.
+ *
+ * \note Include the special case function since most callers need to perform these operations.
+ */
+bool ED_view3d_quat_to_axis_view_and_reset_quat(float viewquat[4],
+                                                float epsilon,
+                                                char *r_view,
+                                                char *r_view_axis_rotation);
 
 char ED_view3d_lock_view_from_index(int index);
 char ED_view3d_axis_view_opposite(char view);