The meaning of the euler angles completely depends on the rotation
order. Currently the rotation order is taken from the target of the
driver variable, which somewhat makes sense if it uses euler, but if
it's quaternion, then the order is always set to XYZ.
Add a new option for the rotation channels of the Transform Channel
driver variables that defaults to the old behavior, but allows setting
an explicit rotation order.
The old layout of `PointerRNA` was confusing for historic reasons:
```
typedef struct PointerRNA {
struct {
void *data;
} id;
struct StructRNA *type;
void *data;
} PointerRNA;
```
This patch updates it to:
```
typedef struct PointerRNA {
struct ID *owner_id;
struct StructRNA *type;
void *data;
} PointerRNA;
```
Throughout the code base `id.data` was replaced with `owner_id`.
Furthermore, many explicit pointer type casts were added which
were implicit before. Some type casts to `ID *` were removed.
Reviewers: brecht, campbellbarton
Differential Revision: https://developer.blender.org/D5558
Without these buttons the functionality of the popover is
incomplete compared to the Graph Editor panel. To support
this the operators have to read the active F-Curve from
the context, instead of directly scanning animation data.
Expanding the context would also help Python operators.
Cheap tip: anything that is not "Camel Case" and/or that is more than
a few words long should use `TIP_` translation, not `IFACE_` one.
Also added several missing strings (including the one reported in D5056
by Jean First (@robbott), thanks).
Each space had separate operators, duplicating logic.
Use RNA properties instead so adding the ability to toggle other
region types (floating redo region for eg) doesn't need to have an
extra operator per space type.
It's also nicer to show a check-box for something which can be toggled.
BF-admins agree to remove header information that isn't useful,
to reduce noise.
- BEGIN/END license blocks
Developers should add non license comments as separate comment blocks.
No need for separator text.
- Contributors
This is often invalid, outdated or misleading
especially when splitting files.
It's more useful to git-blame to find out who has developed the code.
See P901 for script to perform these edits.
There were at least three copies of those:
- OB_RECALC* family of flags, which are rudiment of an old
dependency graph system.
- PSYS_RECALC* which were used by old dependency graph system
as a separate set since the graph itself did not handle
particle systems.
- DEG_TAG_* which was used to tag IDs.
Now there is a single set, which defines what can be tagged
and queried for an update. It also has some aggregate flags
to make queries simpler.
Lets once and for all solve the madness of those flags, stick
to a single set, which will not overlap with anything or require
any extra conversion.
Technically, shouldn't be measurable user difference, but some
of the agregate flags for few dependency graph components did
change.
Fixes T58632: Particle don't update rotation settings
This was broken since cca87ccc75
The problem was that as this popover was defined in the C-code
for the Graph Editor, the relevant panel never got added to the
WM_paneltype registry, since only Python defined panels get
WM_paneltype_add() called when they are defined.
Since the majority of panels defined for regions are only used there,
a more localised fix was applied here by only adding the driver popover
to the global list manually.
Recently @sergey found that hard-coding evaluation of certain very
common driver expressions without calling the Python interpreter
produces a 30-40% performance improvement. Since hard-coding is
obviously not suitable for production, I implemented a proper
parser and interpreter for simple arithmetic expressions in C.
The evaluator supports +, -, *, /, (), ==, !=, <, <=, >, >=,
and, or, not, ternary if; driver variables, frame, pi, True, False,
and a subset of standard math functions that seem most useful.
Booleans are represented as numbers, since within the supported
operation set it seems to be impossible to distinguish True/False
from 1.0/0.0. Boolean operations properly implement lazy evaluation
with jumps, and comparisons support chaining like 'a < b < c...'.
Expressions are parsed into a very simple stack machine program
that can then be safely evaluated in multiple threads.
Reviewers: sergey, campbellbarton
Differential Revision: https://developer.blender.org/D3698
Rebuilding depsgraph is not enough, with COW we also need to ensure COW
copies get updated accordingly.
Had to tweak the generic update system here, since it was always passed
a NULL pointer for the callback arg, this should not change existing
behavior (besides crash fixing ;) )...
Limit to a restricted set of built-ins, as well as the math module.
Also restrict of op-codes, disallowing imports and attribute access.
This allows most math expressions to run
without any performance cost once the initial check is done.
See: D1862 for details.
The copy/paste driver variables buttons currently only work when used in the
Graph Editor as they rely on being able to have the "active F-Curve" context
info that's only present in the Graph Editor (in Drivers Editor mode).
Instead of having them constantly greyed out in the popover, it's easier
to just hide them for now. Besides, this is probably more of an "advanced"
feature that we don't need to expose in the simple UI.
This fixes the problem where the "Show in Drivers Editor" button would
not actually select and highlight the driver under the mouse.
(TODO: The channels still aren't getting selected properly in the
channels list, but at least the properties show correctly)
Otherwise, it's not clear where things are coming from.
FIXME: The icons for datablocks may not always be correct. It uses the
innermost struct's icon instead of the datablock's icon - e.g. Bone
vs Object/Armature. But, that may make more sense for users?
The idea is that we may be able to just take this code and put it into a
new popover panel that gets displayed when called from the UI. This should
at least work well for a first pass test of what we want this UI to look like.
In theory, this should mean that we can get rid of the "Update Dependencies"
button. In practice, there may still be cases where it's still needed
(as somehow, it did end up being needed in the past, even though the RNA
calls should in theory be doing everything needed already).
There are multiple other ways to do it. Leaving this here just made it
easy (and dangerous) to accidentally remove the driver, and was causing
other problems with other layouts.
* Remove "Show Debug Info" option. Everyone has it turned on all the time,
since it's just useful to have
* Make the "Remove Driver" button less prominent. It doesn't happen that much,
so it shouldn't take up as much room
* Make "expressions" textbox wider (i.e. taking up the whole column width)
by separating the label and textbox on separate lines.
* Rename "Add Variable" button to make it clearer to users what "variables"
may be (i.e. they serve as a way to specify Inputs, just like adding a
"Source Data" node in a nodetree)
* Regroup buttons
To bring the UI more in line with the proposed design in T54653 for the "Add Drivers"
popup panel (NOTE: this is separate from the "Drivers Editor", in previous commit!),
this commit adds a new panel - "Driven Property" to the Drivers Editor UI.
This basically duplicates the "Active F-Curve" panel (with less options)
to make it easier to see at a glance which property the Drivers Editor is
showing you.
