- HEADER (beginning of each file)
* general header:
+ 8 char: "BPHYSICS"
+ 1 int: simulation type (same as PTCacheID->type)
* custom header (same for sb, particles and cloth, but can be different for new dynamics)
+ 1 int: totpoint (number of points)
+ 1 int: data_types (bit flags for what the stored data is)
- DATA (directly after header)
*totpoint times the data as specified in data_types flags
- simulation type
soft body = 0, particles = 1, cloth = 2
- data types (more can be added easily when needed)
data flag contains
----------------------------------------
index (1<<0) 1 int (index of current point)
location (1<<1) 3 float
velocity (1<<2) 3 float
rotation (1<<3) 4 float (quaternion)
avelocity (1<<4) 3 float (used for particles)
xconst (1<<4) 3 float (used for cloth)
size (1<<5) 1 float
times (1<<6) 3 float (birth, die & lifetime of particle)
boids (1<<7) 1 BoidData
Notes:
- Every frame is not nescessary since data is interpolated for the inbetween frames.
- For now every point is needed for every cached frame, the "index" data type is reserved for future usage.
- For loading external particle caches only "location" data is necessary, other needed values are determined from the given data.
- Non-dynamic data should be written into an info file if external usage is desired.
* Info file is named as normal cache files, but with frame number 0;
* "Non-dynamic" means data such as particle times.
* Written automatically when baking to disk so basically a library of particle simulations should be possible.
- Old disk cache format is supported for reading, so pre 2.5 files shouldn't break. However old style memory cache (added during 2.5 development) is not supported. To keep memory cached simulations convert the cache to disk cache before svn update and save the blend.
- External sb and cloth caches should be perfectly possible, but due to lack of testing these are not yet enabled in ui.
Other changes:
- Multiple point caches per dynamics system.
* In the future these will hopefully be nla editable etc, but for now things are simple and the current (selected) point cache is used.
* Changing the amount of cached points (for example particle count) is allowed, but might not give correct results if multiple caches are present.
- Generalization of point cache baking etc operator & rna code.
- Comb brushing particle hair didn't work smoothly.
An engine to use for output can now be selected an influences what
shows in the buttons window, only showing relevant data. The idea
behind this is to make it more clear what is supported where, make
the system more pluggable for external render/game engines, and save
space hiding stuff that is not relevant anyway.
* Top header now has an engine menu, to choose between the blender
render engine, game engine, and other future external engines.
* If the game engine is enabled, the buttons window should show
only properties that work in the game engine, and similarly for
the render engine.
* Moved panels from the logic space and game tabs to the physics,
scene and world tabs instead, and removed the game tab.
* Materials and textures tabs should eventually become game
specific too, to better show what is supported.
* Revert lamp sampling/buffers change. The right enum items should
be defined in RNA, not the layout, so that it works in outliner,
python api too.
* Also changed type popup to radio buttons again, and removed the
icons. This is more consistent, and I don't think it's a good idea
to start using icons for these things, too much clutter.
* Replace Mesh with Normals panel in the mesh buttons.
* Remove Material panel from mesh buttons.
* Added name fields for shape/vgroup/vcol/uv.
* Spacing tweak to Object and Bone names.
* Fix some naming conflicts in RNA, with "name" and "type" properties
being defined twice in the same struct.
* context.scene.tool_settings -> context.tool_settings.
this works for the calling operators from python and using the RNA api.
bpy.ops.CONSOLE_exec() is now bpy.ops.console.exec()
eg.
split.itemO("PARTICLE_OT_editable_set", text="Free Edit") becomes... split.itemO("particle.editable_set", text="Free Edit")
For now any operator thats called checks if its missing _OT_ and assumes its python syntax and converts it before doing the lookup.
bpy.ops is a python class in release/ui/bpy_ops.py which does the fake submodules and conversion, the C operator api is at bpy.__ops__
personally Id still rather rename C id-names not to contain the _OT_ text which would avoid the conversion, its called a lot since the UI has to convert the operators.
