Callbacks used in `bpy.props` didn't hold a references to the functions
they used.
While this has been the case since early 2.5x it didn't cause any
problems as long as the class held a reference.
With Python 3.10 or when using `from __future__ import annotations`,
the annotations are no longer owned by the class once evaluated.
Resolve this by holding a reference in the module, which now supports
traverse & clear callbacks so the objects are visible to Python's
garbage collector.
Also refactor storage of Python data, moving from an array into a struct.
Support Python 3.10a5 or 3.9x with support explicitly enabled.
- Enable Python's postponed annotations for Blender's RNA classes
types registered on startup.
- Using postponed annotations has implications for how they are defined,
since they must evaluate in the modules name-space instead of the
classes name-space. See changes to annotations in `release/scripts`.
- Use `from __future__ import annotations` at the top of the module
to ensure the script will run with Python 3.10.
- Old logic is kept since it could be used if PEP-649 is supported.
Resolves T83626
Ref D10474
Remove DNA headers, using forward declarations where possible.
Also removed duplicate header, header including it's self
and unnecessary inclusion of libc system headers from BKE header.
Some subtypes never made it to all neccessary places when they were
introduced. This was throwing warnings when accessing such a properties
subtype from python.
The sub_type enums were also defined in 4 different places:
- RNA_types.h 'PropertySubType'
- rna_rna.c 'rna_enum_property_subtype_items'
- rna_rna.c 'subtype_items'
- bpy_props.c as multiple enums
This patch syncs the definitions across all places so that they are the
same everywhere. It also looks redundant to define these twice in
rna_rna.c, now just use 'rna_enum_property_subtype_items' there (and get
rid off 'subtype_items').
Also moved 'POWER' & 'TEMPERATURE' to number enum in bpy_props (these
were defined in the array enum).
Fixes T82167.
Maniphest Tasks: T82167
Differential Revision: https://developer.blender.org/D9371
Based on the original patch by Vaishnav S (@padthai), this adds
support for temperature units. Initially supported units are Celsius,
Kelvin, and Fahrenheit.
The units aren't used anywhere with this commit. Those changes should
happen in separate patches by adding PROP_TEMPERATURE to RNA property
definitions. But it should be ensured that the various solvers and
simulations actually properly use real units.
The complexity of some of the changes comes from the fact that these
units have offsets from each other as well as coefficients. This also
makes the implementation in the current unit system troublesome.
For example, entering 0C evaluates correctly to 273K, but 0C + 0C
doubles that result, because each unit value is evaluated separately.
This is quite hard to solve in the general case with Blender's current
unit system, though, so it is not handled in this commit.
Differential Revision: https://developer.blender.org/D4401
There is a parameter typo in Python API document about bpy.props.StringProperty.
This patch fixes this.
Also this patch should apply to 2.90 branch as well.
Reviewed By: Grische, mont29
Differential Revision: https://developer.blender.org/D8430
Time will tell whether we need to expose more RNA override flags here.
Implements/Fix T78534.
Differential Revision: https://developer.blender.org/D8250
This must match the specified number in enum items, and is supported for both
static and dynamic enums. Previously dynamic enums did not support a default
value at all.
At least one script writer was upset that this was not specified,
as it is different from "floating point" in Python.
Also, docstring for hard and soft min and max for FloatProperty
was wrong, using sys.float_info.min and sys.float_info.max.
This affects point, spot and area lights. Sun light strength remains without
a unit. This change does not affect .blend file compatibility in any way, as
with the rest of the unit system it's purely a display and editing feature.
Not used for Cycles yet, that will be done after unifying the settings with
Eevee.
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.
MASS unit was already implemented for the C api. Only making sure it is
accessible in the python api. Also added 'CAMERA' to the documentation as a valid option.
