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Adds an optional slider to the action constraint so that it can be
driven without a constraint target.
This is very helpful for more complex rigging and mechanical rigs, as it
means the action constraint can be controlled with a driver/custom
property directly, currently if we want to use a driver to control it we
must add a "dummy" bone/object inbetween to act as a control.
Reviewed By: Sebastian Parborg, Sybren A. Stüvel, Demeter Dzadik, Julian Eisel
Differential Revision: http://developer.blender.org/D8022
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For modifier shortcuts we added a "custom_data" field to panels.
This commit uses the same system for accessing the list data that
corresponds to each panel. This way the context is only used once
and the modifier for each panel can be accessed more easily later.
This ends up being mostly a cleanup commit with a few small changes
in interface_panel.c. The large changes in the UI functions are due
to the fact that the panel custom data is now passed around as a
single pointer instead of being created again for every panel.
The list_index variable in Panel.runtime is removed as it's now
unnecessary.
Differential Revision: https://developer.blender.org/D8559
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- Remove the "mapping" subpanel and moves the source axis
selection ot the destination subpanel.
- Rename "Source" and "Destination" to "Map From" and "Map To" to
make the action more clear
- Gray out source axes when their data isn't selected.
These changes were discussed in D8041.
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- Head / Tail was stuck on two rows. It seems there is an issue with
headings here, which means the first property has to place its own
label. (So for example the small button can't be first in the row.)
- Some misalignment and decorator fixes for aligned toggles
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Silly typo in earlier fix
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This patch implements the list panel system D7490 for constraints.
In this case the panels are still defined in Python.
The layouts are also updated to use subpanels and the a more organized
single column layout. There may be more tweaks necessary for the
layouts.
Reviewed By: Severin, billreynish, Mets
Differential Revision: https://developer.blender.org/D7499
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Currently the action channels are applied after the existing
transformation, as if the action controlled a child of the
bone. This is not very natural, but more importantly, the
transform tools are not designed to work conveniently with an
additional 'pseudo-child' transformation, resulting in effects
like an unexpected pivot location.
Implementing a Before mode that integrates the action channels
as if applied to a parent allows using the special transform
tool code intended for dealing with such constraints.
Note that in either mode, Action constraints should be added
in reverse order, putting a new constraint before the existing
ones that the Action was keyframed to work together.
In order to implement the option, extract a utility from
the Copy Transform constraint code for combining transforms
with special anti-shear scale handling that matches the
Aligned Inherit Scale mode.
The Before mode also requires switching the constraint to
the Local owner space, while the After mode can still use the
World space for efficiency as before. Since the constraint
doesn't have an Owner space option in the UI, this has to be
handled in an RNA setter.
For full backward compatibility, the original simple matrix
multiplication mode is preserved as the third option, but it
is not recommended due to creating shear.
Differential Revision: https://developer.blender.org/D6297
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Most of the time Stretch To is used in actual rigs, like BlenRig
or Rigify, in combination with Damped Track to handle rotation
before the stretch, because it produces rotations more appropriate
for organic deformation, and doesn't flip because of internal
gimbal lock.
The prevalence of this pattern suggests that Stretch To should
support that kind of rotation directly as an option.
Differential Revision: https://developer.blender.org/D6134
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Allow selecting how the new location/rotation/scale is combined with
the existing transformation. This is most useful for rotation, which
has multiple options, and scale, which previously could only replace.
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Allow combining location, rotation and scale at the same time,
using one constraint. The mixing modes are based on matrix
multiplication, but handle scale in a way that avoids creating
shear.
Reviewers: brecht
Differential Revision: https://developer.blender.org/D5640
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Upon close inspection, the way the Offset mode works in the
Copy Rotation constraint makes no sense, and in fact, destroys
the rotation of its owner unless either it's single axis, or
the order is set specifically to `ZYX Euler`.
Since it can't simply be changed because of backward compatibility
concerns, replace the checkbox with a dropdown that provides a set
of new modes that actually make sense.
Specifically, add a mode that simply adds Euler components together,
and two options that use matrix multiplication in different order.
The Python use_offset property is replaced with compatibility stubs.
Reviewers: brecht
Differential Revision: https://developer.blender.org/D5640
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For reasons similar to drivers, it should be possible to set an
explicit Euler rotation order in constraints that use Euler angles.
The Transform constraint in a way approaches drivers in its use,
in that it effectively alters channels using values of other
channels after applying a fixed form mathematical expression.
For this reason, instead of just specifying the euler order for
its inputs, it uses the same enum as driver variables. However
Quaternion components are converted to a weighted pseudo-angle
representation as the rest of the constraint UI expects angles.
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Uniform scale is superior to non-uniform scale in that it works with
parenting without causing shear. Thus it is a valid desire in some
cases to turn arbitrary scale into guaranteed uniform scale.
Implementing this in the Copy Scale constraint allows one for instance
to 'inherit scale as uniform' by disabling Inherit Scale, and using
Copy Scale from parent with Offset and Make Uniform.
Reviewers: brecht
Differential Revision: https://developer.blender.org/D5614
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This option from the very beginning of its existence needed more work
to make it work correct and this was never done.
This option was working fine during continuous playback, when there
are no skipped frames, but it was failing when AV-sync of framedrop
was enabled.
It was never working correct when jumping between frames, including
rendering on a farm which usually does frame-range based rendering.
With copy-on-write things became even more tricky, since the "stuck"
flag was never preserved between re-evaluations.
Fixes T65683: Sticky Option in Floor Constraint for Bones Not Working
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Since scale is multiplicative, the appropriate way to partially copy
it is to use power. However, the influence slider of constraints uses
linear interpolation. Thus, there is no way to correctly split scale
via constraints without adding this feature.
In addition, this allows inverting scale by using negative powers,
fulfilling the function of Copy Rotation's Invert checkboxes.
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A 'Disable and Keep Transform' button for constraints was added. This
allows animators to disable a constraint without moving the constrained
object/bone, making it easier to toggle constriants on and off without
any visual consequence. Typical usage would be a character picking up an
object (enable 'Copy Transform' constraint) and placing it somewhere
else (disable the constraint).
Note that there could still be movement when there are muliple
constraints active. For example, when using this constraint stack
- #1: Copy Transform from Empty.001
- #2: Copy Rotation from Empty.002
and disabling constraint #2, constraint #1 is still active and will
still modify the visual transform of the object. According to our
in-house animators, this is expected behaviour.
Reviewers: campbellbarton, dfelinto, sergey
Reviewed By: campbellbarton
Subscribers: brecht
Tags: #animation
Differential Revision: https://developer.blender.org/D4677
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Add a new option that makes the Spline IK solver apply volume
preservation on top of the original scaling, considering the
pre-IK scale of the bone as the goal volume to be preserved.
This basically works similar to the Stretch To constraint, and
allows easily rigging a stretchy chain that uniformly follows
its parent's scaling.
Since the Stretch To behavior is more familiar, the new option
is on by default for newly created Spline IK constraints.
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After a lot of thinking about this, I decided that all operation modes
that I've tried over the past couple of years, including the original
2.79 one, have their uses after all. Thus the only reasonable solution
is to add yet another option.
The modes are:
- Strict: The current 2.80 mode, which overrides the original scaling
of the non-free axes to strictly preserve the volume. This is the most
obvious way one would expect a 'Maintain Volume' constraint to work.
- Uniform: The original 2.79 mode, which assumes that all axes have been
scaled the same as the free one when computing the volume. This seems
strange, but the net effect is that when simply scaling the object
uniformly with S, the volume is preserved; however, scaling the non-
free axes individually allows deviating from the locked volume.
This was obviously intended as a more or less convenient UI tool.
- Single Axis: My own variant of the intent of the Uniform scale, which
does volume-preserving if the object is scaled just on the Free axis,
while passing the non-free axis scaling through. I.e. instead of
uniform S scaling, the user has to scale the object just on its
primary axis to achieve constant volume. This can allow reducing the
number of animation curves when only constant volume scaling is needed,
or be an easier to control tool inside a complex rig.
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Quiet's pylint W0613 warning, also remove some unused args.
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Previously Spline IK provided only two choices: either scale the
length of the bone chain to fit the length of the curve, or don't
scale the bone in the Y dimension at all (ignoring effects of
actually fitting to the curve due to curvature and curve object
scale).
This patch adds a new option to use the pre-IK Y scale of the
bones to adjust their length when fitted to the curve, allowing
individual posing control over the length of the segments.
Reviewers: brecht
Differential Revision: https://developer.blender.org/D4687
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This was originally added in 6feddb8b61df, but the warning is quite clumsy
and we also don't limit editing object transforms that way. The add constraint
button at the top now also indicates if it's for objects or bones, which was
not the case before and probably was part of the confusion.
If it does still cause issues we can always change back or hide the tab.
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The Nearest Surface Point shrink method, while fast, is neither
smooth nor continuous: as the source point moves, the projected
point can both stop and jump. This causes distortions in the
deformation of the shrinkwrap modifier, and the motion of an
animated object with a shrinkwrap constraint.
This patch implements a new mode, which, instead of using the simple
nearest point search, iteratively solves an equation for each triangle
to find a point which has its interpolated normal point to or from the
original vertex. Non-manifold boundary edges are treated as infinitely
thin cylinders that cast normals in all perpendicular directions.
Since this is useful for the constraint, and having multiple
objects with constraints targeting the same guide mesh is a quite
reasonable use case, rather than calculating the mesh boundary edge
data over and over again, it is precomputed and cached in the mesh.
Reviewers: mont29
Differential Revision: https://developer.blender.org/D3836
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The main use one can imagine for this is adding tweak controls to
parts of a model that are already deformed by multiple other major
bones. It is natural to expect such locations to deform as if the
tweaks aren't there by default; however currently there is no easy
way to make a bone follow multiple other bones.
This adds a new constraint that implements the math behind the Armature
modifier, with support for explicit weights, bone envelopes, and dual
quaternion blending. It can also access bones from multiple armatures
at the same time (mainly because it's easier to code it that way.)
This also fixes dquat_to_mat4, which wasn't used anywhere before.
Differential Revision: https://developer.blender.org/D3664
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- Use smooth normals to displace in Above Surface mode.
- Add an option to align an axis to the normal in the constraint.
I've seen people request the alignment feature, and it seems useful.
For the actual aligning I use the damped track logic.
In order to conveniently keep mesh data needed for normal
computation together, a new data structure is introduced.
Reviewers: mont29
Differential Revision: https://developer.blender.org/D3762
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Allow raycasting in two directions and culling front or back faces.
Also implement a new Invert Cull option in both constraint and
modifier that can be used to aim for faces aligned with the project
axis direction when raycasting both ways.
Reviewers: mont29
Differential Revision: https://developer.blender.org/D3737
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In addition to the original map to surface and Keep Above Surface,
add modes that only affect vertices that are inside or outside
the object. This is inspired by the Limit Distance constraint,
and can be useful for crude collision detection in rigs.
The inside/outside test works based on face normals and may not be
completely reliable near 90 degree or sharper angles in the target.
Reviewers: campbellbarton, mont29
Differential Revision: https://developer.blender.org/D3717
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Misleading name since it's between 0..1.
Use as a keyword argument to prepare for keyword only args.
Also document that leaving unset has special behavior.
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Prepare for keyword only args
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Scale is a multiplicative quantity, so adding it doesn't make sense.
However, for backward compatibility reasons, and in case somebody
actually desires the old additive behavior, the old way remains as
an option.
Without this change the only way to properly combine scale is via
parenting or the complicated Transformation constraint.
The new mode is turned on by a flag for file compatibility, but the
RNA option is reversed so that the new behavior feels more default.
Reviewers: aligorith
Differential Revision: https://developer.blender.org/D3558
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Use 'autopep8 --ignore E721,E722' on our UI code, only minor changes.
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Although this wasn't so obvious since it
only showed up for factory settings and in the preferences window.
Panel display order depends on registration order,
Sorry for the noise. On the bright side we no longer need to move
classes around to re-arrange panels.
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In preparation for it being removed, see: T47811
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All in all, this patch adds an Alembic importer, an Alembic exporter,
and a new CacheFile data block which, for now, wraps around an Alembic
archive. This data block is made available through a new modifier ("Mesh
Sequence Cache") as well as a new constraint ("Transform Cache") to
somewhat properly support respectively geometric and transformation data
streaming from alembic caches.
A more in-depth documentation is to be found on the wiki, as well as a
guide to compile alembic: https://wiki.blender.org/index.php/
User:Kevindietrich/AlembicBasicIo.
Many thanks to everyone involved in this little project, and huge shout
out to "cgstrive" for the thorough testings with Maya, 3ds Max, Houdini
and Realflow as well as @fjuhec, @jensverwiebe and @jasperge for the
custom builds and compile fixes.
Reviewers: sergey, campbellbarton, mont29
Reviewed By: sergey, campbellbarton, mont29
Differential Revision: https://developer.blender.org/D2060
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This reverts commit 4fd78bb06faa31f265af6a5f247cf4255b5ac479.
After further testing, it turns out that these options are less-broken than
I remember them being (and have been hearing about). Specifically, as long
as you disable all 3-axes of a transform component (i.e. all location, all
rotation, all scale) you're not likely to have problems, whereas if you only
disabled one axis (i.e. y-rotation), you may have problems in some cases.
So, restoring these to the UI.
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The RNA properties are still there (in case you really need them), except now
they will not be shown in the UI anymore, as this constraint really didn't
work well/at all when any of those was disabled. Most people shouldn't really
need to worry about this change.
If anyone wants a matrix-math challenge, they're welcome to try getting those
working for real, so that we can show these toggles again.
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This commit/patch/branch brings a bunch of powerful new options for B-Bones and
for working with B-Bones, making it easier for animators to create their own
rigs, using fewer bones (which also means hopefully lighter + faster rigs ;)
This functionality was first demoed by Daniel at BConf15
Some highlights from this patch include:
* You can now directly control the shape of B-Bones using a series of properties
instead of being restricted to trying to indirectly control them through the
neighbouring bones. See the "Bendy Bones" panel...
* B-Bones can be shaped in EditMode to define a "curved rest pose" for the bone.
This is useful for things like eyebrows and mouths/eyelids
* You can now make B-Bones use custom bones as their reference bone handles,
instead of only using the parent/child bones. To do so, enable the
"Use Custom Reference Handles" toggle. If none are specified, then the BBone will
only use the Bendy Bone properties.
* Constraints Head/Tail option can now slide along the B-Bone shape, instead of
just linearly interpolating between the endpoints of the bone.
For more details, see:
* http://aligorith.blogspot.co.nz/2016/05/bendy-bones-dev-update.html
* http://aligorith.blogspot.co.nz/2016/05/an-in-depth-look-at-how-b-bones-work.html
-- Credits --
Original Idea: Daniel M Lara (pepeland)
Original Patch/Research: Jose Molina
Additional Development + Polish: Joshua Leung (aligorith)
Testing/Feedback: Daniel M Lara (pepeland), Juan Pablo Bouza (jpbouza)
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