If there was a dependency cycle involved, it was possible that pchan
array will be freed before all bones are evaluated. Now clear is
done in a dedicated node, which is never a part of dependency cycle.
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
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
The key used by find_operation consists of the operation code,
node name, and an index for array property drivers. All three
elements are required to unambiguously look up a node.
- Use the original ID pointer for lookup in DEG_get_eval_flags_for_id.
- When the flags change after a DEG rebuild, tag the object for update.
- Instead of mixing int and short in different places, use uint32_t.
This fixes text not updating when a Follow Curve reference is set.
- 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
There were a few copies of the same few lines in depsgraph build code,
so it seems to be logical to introduce a function for it, and make it
accessible from C code for completeness.
As an example, register the mask needs of the Data Transfer modifier.
Before it was only doing this for directly linked objects. This was
initially needed to solve fps issues in some of the shots. Now this
fps drop i can no longer reproduce. Was likely needed prior to
modifiers dependencies "inheriting" visibility from the "parent".
This commit makes it so objects which are linked indirectly to the
scene via collections are properly considered visible (or, rather,
evaluatable) by dependency graph.
Solves missing eyelashes and braids issues with 01_035_A.
Previously it was possible to have geometry component to
tag batch for DIRTY_ALL and shading to tag with SHADING_UPDATE.
Now there is a relation between uber eval and shading, which
solves this issue.
The idea of those flags is to avoid evaluation of operations
which are not needed to bring visible objects to an up to date
state.
Previously, dependency graph attempted to do combine those
into an ID level flag. In practice it proved to be rather
tricky, since there could be dependency cycles on ID level
which will not exist on component level.
This allows to force duplicated object to be fully evaluated for
display/draw.
Previously only transform component of duplicated object was
forced to become evaluated.
Need to ensure objects from collection which was built but
is became visible in the new "context" are poked for re-built.
This should be rather cheap, since this only will update
their visibility flag.
Can not rely on visibility flush here, since there is no
relations between collection and its objects.
Avoids invisible objects from being considered visible when they
are used as driver variables.
If those cases are actually coming from a visible object, then
deg_graph_build_flush_visibility() will ensure visibility is
properly flushed there.
Was happenign for following cases:
- Deep hierarchy of non-restircted collections, which has grand-grand
parent restricted.
- Collections which are constructed from invisible object.
