This commit adds a new type of volume preservation mode to Spline IK
which makes it possible to set limits on the minimum and maximum
scaling of bone "fatness".
* The old volume preseving mode has been kept but renamed, to avoid
breaking old rigs. "Volume Presevation" uses the new method, while
"Inverse Preservation" is the old one.
* The code and settings for this new xz scale mode are directly lifted
from the improved Stretch To constraint
Make sure the 1.0 value is not affected by smoothing, and min/max limits
never go above or below 1.0 respectively. This was a request by
animators since not modifying the mesh in its rest pose is regarded as
crucial.
Currently the volume variation feature in stretch constraints is
unlimited. This has to be compensated by riggers by adding scale limit
constraints, but these are unaware of the stretch orientation and can
lead to flipping. Also the stretch calculation itself is not working
properly and can lead to collapsing volume.
The patch fixes this with several modifications:
- Interpret the volume variation factor as exponent, which works better
with large values for artistic purposes.
- Add integrated limits to the volume "bulge" factor, so secondary
constraints for compensation become unnecessary
- Add a smoothness factor to make limits less visible.
Eventually a generic volume preservation constraint would be nicer,
because multiple constraints currently implement volume variation of
their own. This feature could actually work very nicely independent from
other constraint features.
Differential Revision: https://developer.blender.org/D826
There is no good solution here, since RNA props can only have one type/unit.
Tried to find the less worse one - have different RNA props for same DNA value
(a bit like the angle/length for camera lens).
Also fixed two other issues with Transform conctraint:
* Angle were still in degrees (yes, another backward-compatibility breacking).
* Scale was absolute, unlike loc/rot.
Also cleaned up a bit the code, replaced some magic numbers by proper enums, ...
- ability to change the space the axis is projected in (so you can choose worldspace or -space, was always local-space before).
- support projecting on a negative axis, without this some very simple clamping is not possible if the direction happened not to be positive.
- add distance limit (same as modifier), without this single meshes surrounding an object would make the constraint impossible to use in some cases (it would snap to the wrong side).
note: this removes the ability to project on multiple axes at once but this option only added up directions and didnt project on multiple axes as you might expect.
purpose of some of these features
* ClampTo Constraint, Target Object field: now mentions that it is for curve
objects only
* Dopesheet Editor Modes: now describe what data is editable in each mode. The
wording may be a bit clumsy here, but (apart from Mask Editor one, which I'm not
entirely sure about) should at least be technically correct
* Rename Legacy to Standard, it's not being deprecated as far as I know.
* Make option to toggle off Location solving work with Standard.
* Make it converge a bit better in some cases by enforcing a minimum number of
iterations before giving up.
* Move IK solver choice out of bone panel, it's an armature level setting and
should be set there.
* Radiant -> Radians
* Noted down revision number for when Jahka removed the old constraint blending
logic. I spent some time hunting this down while trying to check if it might've
caused any obvious changes leading to one of the (now closed) bugreports. Better
to note this in the code then.
This is needed in cases when using blender camera with different
resolution than original footage. Behaves in the same way as
background picture framing.
* ID-blocks referenced by Constraints but not being used as the target objects
(such as Actions in the Action Constraint, or Text Blocks in PyConstraints) now
get usercounts for being referenced in this way. This should fix ancient bugs
such as [#19205] and [#8593]. More tests still needed to verify that this
does now play nicely with proxies.
* Changing actions used by NLA strips should now update the usercounts
accordingly
can type in any value, and only when sliding the number value there is a limit.
It was already possible to assign any value to a socket with node linking, so
this shouldn't cause any new issues.
Also raised the limits on the math nodes, with a patch by Agustin Benavidez.
This fix adds a "ref_id" ID pointer to BKE_all_animdata_fix_paths_rename() & co, which is the ID against which prefix+oldName/NewName is "applied", currently only used for drivers' bones targets. Just pass NULL to get same behavior as previously. A bit annoying to make such a change for such a specific case, but there seems to be no other way to go... :/
Note about long lines: I did not touch to two pieces of code (because I don’t see any way to keep a nicely formated, compact code, with shorter lines):
* The node types definitions into rna_nodetree_types.h
* The vgroup name functions into rna_particle.c
While looking at a bug report, I found that the current GUI for the Action
Constraint actually didn't make sense, mixing up settings so that it wasn't
clear which settings corresponded to which others. This commit cleans up the
layout into a clearer two-column design to have a "from" -> "to" layout, making
all the
relationships between things clear.
For more details see http://aligorith.blogspot.com/2012/01/action-constraint-
gui-revised.html
If this object is defined, object with Follow Track constraint would be
projected into surface of this depth object.
If object is not set or there's no projection onto it, projection plane
calculated based on original object position would be used.
This allows to make cheap facial mocap.
