python - lux/pov/renderman materials, lamps etc as well as operators.
At the moment there are 2 ways to do this, The first is like subclassing from python, another (disabled) method copies the base PyTypeObject struct
and makes some changes.
The PyType is stored in the RNA Struct for reuse, right now there are no access functions - needs to be improved.
Added a python script for printing all blend file data to the console which helps testing the api.
dir(rna) wont work for python 2.x now, use rna.__dir__() instead.
example...
bpyui.registerKey( C, bpyui.spaceTypes.SEQ, 0, "Sequencer", "SEQUENCER_OT_view_selected", bpyui.keyTypes.A, bpyui.keyValTypes.PRESS, 0,0, {})
May want to split this into multiple functions.
removed epy docstrings from RNA python api, since Python can get this info from rna. (could be redone in python if getting doc's on RNA is needed)
epy_doc_gen works again
* RNA_blender.h is now generated along with the other files. It is not
used anywhere yet, and still located quite hidden next to the other
rna_*_gen.c files. Read only access for now.
* Inherited properties are not copied from the base anymore but
iterated over. Patch by Vekoon, thanks!
* Array get/set callbacks now do the whole array instead of getting an
index. This is needed for some layers for example so python can set
the array as a whole, otherwise the check that one layer has to be
enabled at all times gets in the way. Also nicer for the C API.
* Also some changes to returning pointers to make the API cleaner, got
rid of the type() callback and instead let get() return PointerRNA
with the type included.
The C API looks like this currently:
http://users.pandora.be/blendix/RNA_blender.h
- wm draw method is now initialized correct when reading older
files, but the SDNA bug causing the problem is still unsolved.
is due to // char pad[8]; not being recognized as commented.
- triple buffer proxy texture test follows spec better now,
was disabling triple buffer unnecessarily on some drivers.
- some cmake compile fixes related to sequencer pthread usage
and removed bad level calls lib for player.
- show outliner header buttons in oops mode as well until that
can be switched in the UI.
- fix region data free issue for tooltips
- warning fixes
This means you can define an operator in python that is called from C or Python - like any other operator.
Python functions for invoke and exec can be registered with an operator name.
keywords are read from the python exec() function, then used to create operator properties. The default python values are used to set the property type and defaults.
def exec(size=2.0, text="blah"): ...
is equivalent to...
prop = RNA_def_property(ot->srna, "size", PROP_FLOAT, PROP_NONE);
RNA_def_property_float_default(prop, 2.0f);
prop = RNA_def_property(ot->srna, "size", PROP_STRING, PROP_NONE);
RNA_def_property_string_default(prop, "blah");
TODO -
* make use of events
* return OPERATOR_CANCELLED/OPERATOR_FINISHED.. etc
* add support for array args
* more testing
this means it can reuse the function for converting python to RNA types - giving more useful errors.
* Incorrect enum args lists valid values in their exception message (used for PyRNA and PyOperators).
* remove bpy_idprop.c and bpy_idprop.h
PyOperators are not usable since they run outside the UI loop atm.
* RNA_property_enum_value
* RNA_property_enum_identifier
To get an enum string from a value and a value from an enum.
BPy_StructRNA types (objects, meshes, images etc) can now be used as dictionary keys.
source\blender\python\intern\bpy_rna.c:1018: error: initializer element is not constant
source\blender\python\intern\bpy_rna.c:1018: error: (near initialization for `pyrna_prop_Type.tp_get
Assign get generic get/sets before PyType_Ready runs
examples...
RNA Lamp: Lamp
==============
@ivar rna_type: RNA type definition. *readonly*
@type rna_type: PyRNA PointerProperty
@ivar name: Unique datablock ID name. (22 maximum length)
@type name: string
@ivar adapt_thresh: Threshold for Adaptive Sampling. in (0.000, 1.000)
@type adapt_thresh: float
@ivar area_shape: Shape of the Area lamp
@type area_shape: enum in [SQUARE, RECTANGLE]
@ivar area_size: Size of the area of the Area Lamp. in (0.000, 100.000)
@type area_size: float
@ivar area_sizey: Size of the area of the Area Lamp. in (0.000, 100.000)
@type area_sizey: float
- snip
RNA Object: Object
==================
@ivar rna_type: RNA type definition. *readonly*
@type rna_type: PyRNA PointerProperty
@ivar name: Unique datablock ID name. (22 maximum length)
@type name: string
@ivar data: Object data. *readonly*
@type data: PyRNA PointerProperty
@ivar fake_user: Saves this datablock even if it has no users
@type fake_user: bool
@ivar library: Library file the datablock is linked from. *readonly*
@type library: PyRNA PointerProperty
@ivar loc: in (-inf, inf)
@type loc: float[3]
Can now assign RNA arrays from python lists of bools/ints/floats
eg -> rna.scenes["Scene"].layer = [True] * 20
Also added exceptions when trying to set readonly properties.
* Matches the C/RNA api structure
* Thin wrapper ~(600 lines)
* No functions specific to any blender object type.
* Defines 2 types, BPy_StructRNA and BPy_PropertyRNA.
* Python 3.0 target (compatible with python 2.4,5,6)
* http://wiki.blender.org/index.php/BlenderDev/Blender2.5/PyRNA - continue docs/discussion here.
Todo
* Collection iterators
* Write access to data
* Define how constants should be accessed (as strings or some special type)
* Solve the "Python keeping invalid blender pointers" problem.
This cant just be solved in the py api - we need blender to notify when ID's are removed
Examples
Here are some examples that work with the current implementation of the api.
rna.lamps["Lamp.006"].energy -> (1.0)
rna.lamps["Lamp.007"].shadow -> ("NOSHADOW")
rna.materials.keys() -> ['flyingsquirrel_eye', 'frankie_skin', 'frankie_theeth']
rna.scenes["hud"].objects["num_text_p2_4"].data.novnormalflip -> False
rna.meshes["mymesh"].uv_layers.keys() -> ['UVTex', 'UVTex']
rna.meshes.items()
For a dump of yo-frankie level see - http://pasteall.org/3294/python
Notes
* Added python back, can only execute scripts from the command line with -P script.py
* bpy_interface.c is just enough functionality to run a python file.
