With the brush system refactor in 4.3, the mesh filter tool was changed
to remove the `no_orig_co` `FilterCache` property. This change and
subsequent refactors had the unintended effect of breaking the filter
tool "repeat" functionality. The expected state of most filter modes
is to use the current position, not the original position.
To fix this behavior, in all modes except Sharpen, Smooth, and Relax
that used the original position data, this commit removes resetting
the transform by the distance from the original position, instead
updating this only when the modal is operating.
Unfortunately, the smooth filter is rather complicated in how it
expects this data, when running as a modal, we always use the original
data, but when the repeat parameter is being used, we need to instead
use the current position on any step that isn't the first one as the
undo step is not "committed" until the user is finished tweaking the
panel.
Additionally, many of the filter modes clipped the resulting posistions
based on the original position data instead of the new, transformed
position, this was also fixed.
Pull Request: https://projects.blender.org/blender/blender/pulls/131469
a77a5ec9f3