but including "virtual" modifiers (for example, an object skel-parented
to a lattice has a virtual first lattice modifier)
- removed mesh_modifier(), all functionality has been incorporated into
modifier stack (well, keys still don't exist as a modifier, but I am
not sure if they should).
- added interface option to convert a virtual modifier into a real modifier
- added option to parent to lattice object or lattice with deform
- bug fix, patch of hook indices patched all hooks (oops) not just ones
for edited mesh
NOTE: Files saved with 2.38 that include an object parented to a lattice
will not load correctly, because it will look like the object is parented
only to the object (i.e. without deform). Can be simply fixed by reparenting
or adding a lattice modifier. Older files are handled automatically.
variables, these are still in same place. enable button automatically
makes/enables modifier.
- changed hook to hook modifier conversion to happen on direct link,
required to make sure we don't forget to free any memory for files
saved with 2.38 that have hooks.
- update modifier interface to enforce modifiers with the require-original-
data flag to not move beyond deforming modifiers.
- enforce only one softbody modifier allowed
NOTE: Once again, no modifier stack for lattice yet means softbody for
lattice does not work atm.
can only follow deform (for example, they store mesh vertex
indices)
- added ModifierType.foreachObjectLink for iterating over Object
links inside modifier data (used for file load, relinking, etc)
- switched various modifiers_ functions to take object argument
instead of ListBase
- added user editable name field to modifiers
- bug fix, duplicate and make single user didn't relink object
pointers in modifier data
- added modifiers to outliner, needs icon
- added armature, hook, and softbody modifiers (softbody doesn't
do anything atm). added conversion of old hooks to modifiers.
NOTE-THE-FIRST: User name field is not initialized on loading 2.38 files
so if you have saved stuff with a cvs blender you will see blank names.
NOTE-THE-SECOND: Since modifiers aren't evaluated yet for non-Mesh
objects, hooks for lattices and curves are broken. Don't updated if
you actually, say, *use* Blender.
NOTE-THE-THIRD: Old hooks used a quirky weighting system during
deformation which can't be extended to modifiers. On the upside,
I doubt anyone relied on the old quirky system and the new system
makes much more sense. (Although the way falloff works is still
quite stupid I think).
He even made a nice doc in wiki:
http://wiki.blender.org/bin/view.pl/Blenderdev/Blendgz
Usage: set the option "Compress File" in the main "File" pulldown menu.
This setting is a user-def, meaning it is not changed on reading files.
If you want it default, save it with CTRL+U.
The longest debate went over the file naming convention. Shaul started
with .blend.gz files, which gave issues in Blender because of the code
hanging out everywhere that detects blender files, and that appends the
.blend extension if needed.
Daniel Dunbar proposed to just save it as .blend, and not bother users
with such details. This is indeed the most elegant solution, with as
only drawback that old Blender executables cannot read it.
This drawback isn't very relevant at the moment, since we're heading
towards a release that isn't upward compatible anyway... the recode
going on on Meshes, Modfiers, Armatures, Poses, Actions, NLA already
have upward compatibility issues.
We might check - during the next month(s) - on a builtin system to
warn users in the future when we change things that make a file risky
to read in an older release.
- added decimate modifier & removed old decimate interface
(currently lacks warning about destroying data, and there needs
to be a way for modifiers to return errors back to the interface)
- allow applyModifier to return NULL to indicate error
- unfortunately new decimate modifier means it does not know exact
number of faces in mesh (other modifiers may come before) and so
instead interface uses a percentage. if people need exact face
count slider then I will have to think of some hack to fit this
in. note that it does display the output face count so its possible
to tweak the pct to get what you want regardless.
- removed python Wave object
If you are bored now how much easier it is to implement something
like decimate as a modifier. Very few changes to interface, very
few entry points.
- removed mesh_deform (merge into mesh_modifier)
- switch python lattice_apply function to use object_apply_deform,
this isn't exactly equivalent but the python system shouldn't
have been calling that deep into the kernel anyway.
New feature: Modifier stack
- added Object.modifiers (list of ModifierData elements)
- added DNA_modifier_types.h
o contains type definition for the file data for the various
modifier types
- added BKE_modifier.h
o contains modifierType_get_info (access to modifier type registry)
o structs and defines for runtime modifier usage
- updated mesh_calc_modifiers to evaluate modifier stack (note that
for the time being it also evaluates the old style modifiers so files
should load and work as normal).
- add file handling modifier code (todo: don't replicate on object copy)
- add modifier stack UI code (lives in object panel)
Only real new feature at the moment is that you can apply lattices and
curves *after* a subdivision surface which was never possible before.
Todo:
- DEP graph updating does not work correctly yet, so you generally have
to tab cycle to see results.
- editmode calculation does not use modifier stack.
- bug fixes (there must be a few in there somewhere)
- changed mesh_modifier, sbObjectStep, object_deform to take vertexCo
argument instead of operating on mesh
- fixed bug where a derived mesh would not be returned in editmode
- removed object_wave, replaced by init_wave_deform and calc_wave_deform
- moved cached DerivedMesh to Object, not Mesh... fixes heisenbugs
with linked objects
leaving in a DL_VERTS type displist (and modifying mesh)
- removed DL_VERTS displist type (woot woot)
- makeDispListMesh now puts deformed verts in object->derivedDeform
- switch over other system parts to new deformed vert storage,
still kinda hacky and maybe some inconsistencies... will be
sorted out soon enough.
- moved build_particle_system to makeDispListMesh... this may have
adverse side effects, needs to be sorted out with depgraph system
- convert object_apply_deform to use mesh_get_derived_deform
- convert build_particle_system to use mesh_get_derived_deform
- remove apply option from mesh_modifier
What do you know, this leaves only one callsite for mesh_modifier
and one "user" site for DL_VERTS...
Aim was to get a total refresh of the animation system. This
is needed because;
- we need to upgrade it with 21st century features
- current code is spaghetti/hack combo, and hides good design
- it should become lag-free with using dependency graphs
A full log, with complete code API/structure/design explanation
will follow, that's a load of work... so here below the list with
hot changes;
- The entire object update system (matrices, geometry) is now
centralized. Calls to where_is_object and makeDispList are
forbidden, instead we tag objects 'changed' and let the
depgraph code sort it out
- Removed all old "Ika" code
- Depgraph is aware of all relationships, including meta balls,
constraints, bevelcurve, and so on.
- Made depgraph aware of relation types and layers, to do smart
flushing of 'changed' events. Nothing gets calculated too often!
- Transform uses depgraph to detect changes
- On frame-advance, depgraph flushes animated changes
Armatures;
Almost all armature related code has been fully built from scratch.
It now reveils the original design much better, with a very clean
implementation, lag free without even calculating each Bone more than
once. Result is quite a speedup yes!
Important to note is;
1) Armature is data containing the 'rest position'
2) Pose is the changes of rest position, and always on object level.
That way more Objects can use same Pose. Also constraints are in Pose
3) Actions only contain the Ipos to change values in Poses.
- Bones draw unrotated now
- Drawing bones speedup enormously (10-20 times)
- Bone selecting in EditMode, selection state is saved for PoseMode,
and vice-versa
- Undo in editmode
- Bone renaming does vertexgroups, constraints, posechannels, actions,
for all users of Armature in entire file
- Added Bone renaming in NKey panel
- Nkey PoseMode shows eulers now
- EditMode and PoseMode now have 'active' bone too (last clicked)
- Parenting in EditMode' CTRL+P, ALT+P, with nice options!
- Pose is added in Outliner now, with showing that constraints are in
the Pose, not Armature
- Disconnected IK solving from constraints. It's a separate phase now,
on top of the full Pose calculations
- Pose itself has a dependency graph too, so evaluation order is lag free.
TODO NOW;
- Rotating in Posemode has incorrect inverse transform (Martin will fix)
- Python Bone/Armature/Pose API disabled... needs full recode too
(wait for my doc!)
- Game engine will need upgrade too
- Depgraph code needs revision, cleanup, can be much faster!
(But, compliments for Jean-Luc, it works like a charm!)
- IK changed, it now doesnt use previous position to advance to next
position anymore. That system looks nice (no flips) but is not well
suited for NLA and background render.
TODO LATER;
We now can do loadsa new nifty features as well; like:
- Kill PoseMode (can be option for armatures itself)
- Make B-Bones (Bezier, Bspline, like for spines)
- Move all silly button level edit to 3d window (like CTRL+I = add
IK)
- Much better & informative drawing
- Fix action/nla editors
- Put all ipos in Actions (object, mesh key, lamp color)
- Add hooks
- Null bones
- Much more advanced constraints...
Bugfixes;
- OGL render (view3d header) had wrong first frame on anim render
- Ipo 'recording' mode had wrong playback speed
- Vertex-key mode now sticks to show 'active key', until frame change
-Ton-
Works as follows;
- press the 'show bake settings' button (no space left... :)
- define start/end frame for bake, and an interval step.
The baked result interpolates nicely (Bspline, 4 keys) so in general a
step size of 2 or 3 still gives OK results.
- Press "BAKE". This will do a full animation + playback. Press ESC if it
you don't want it.
Once Baked, the BAKE button becomes a FREE BAKE. As reminder the softbody
buttons get blocked with error() menu.
This saves OK in a file. Renders any frame, including fields and moblur.
You can also set a "Timeoffs" for the softbody. And yes, this should be
in the NLA once... :)
NOTE! With this commit, files saved with the old (first commit) version by
Jens Ole won't read the settings back... he stored all sofbody variables in
Object, which was moved to a new struct when I did my first commit on SB
(over a month ago)
Also note that I moved particle deflecting & softbody to a new include.
- Added Softbody effect for Lattices (not too useful yet without
vertexgroups though)
- Added default vertex "goal" value + button, to be assigned when no
vertexgroup exists (or vertex isn't in the group)
- Made softmin and softmax work as documented (defining min and max range)
- made changes in buttons send 'update' signal to softbody
And:
- added Nkey Properties to show lattice coordinates
User level notes are in Wiki here;
http://wiki.blender.org/bin/view.pl/Blenderdev/Softbodies
And will be added in blender3d.org CMS later.
Tech level notes are still pending, but here's the most relevant ones;
- made ob->soft struct SoftBody to hold all settings, and read/save in
files
- added (temporal!) conversion for the old settings. So: read old files
with softbody experiments now, and save over!
- cleaned API calls for softbody, which are only 5 of them now:
sbNew()
sbFree()
sbObjectStep() (animation steps)
sbObjectToSoftbody() (full re-initialize data)
sbObjectReset() (only reset motion)
- API calls accepts time in frames now, within softbody.c it converts
Further, internally code was cleaned some (missing tabs etc). Also tried
to keep a well defined structure with hints how to add support for more
objects. Can write notes about that...
into drawobject.c (just used for calculating weight
map)
- removed two_sided (replace with glLightModeli calls)
- huge rewrite of drawobject.c for meshes, extracting simple
drawing functions and then reworking to bring some order
and clarity back to the code.
A lot was changed here so it is likely I missed a few
things in testing although I tried to be very careful.
Please let me know if you find any changes in drawing.
from within mesh_modifiers (kernel deform.c). It copies vertices to a
temporal particle system (struct SoftBody with BodyPoint structs) to do
physics tricks with it.
For each frame change the delta movements (based on standard ipo anim or
even other deforms (later) are applied to the physics system. How to apply
and calculate satisfying results is not my thing... so here I'll commu-
nicate with others for.
Since it's in the modifier stack, the SoftBody code can run entirely on
original data (no displists!).
Right now I've implemented 2 things;
- "Goal" which is a per vertex value for how much the current position
should take into account (goal=1 is without physics). This is a powerful
method for artists to get control over what moves and not. Right now i
read the vertex color for it.
- And some spring stuff, which now only works based on force moving it to
the originial location. This doesnt work with 'goal'... erhm.
- You can re-use physics vars from engine, used right now is (in Object)
- damping
- springf (spring factor)
- softflag (to set types, or activate softbody for it
- The SoftBody pointer in struct Object is only runtime, nothing saved in
file
To prevent all users going to complain it doesn't work, I've hidden the
functionality. :)
The buttons to set softbody 'on' only show now (psst psst) when the object has
name "soft" as first 4 characters. You can find the buttons in the F7 Particle
Interaction Panel (which should be renamed 'physics properties' later or so.
Demo file:
http://www.blender.org/bf/softbody.blend
1) Curve deform
http://www.blender3d.org/cms/Curve_Deform.392.0.html
Works simple as expected, but keep track of the rotation axis
in F7 buttons (Track X Y Z)
Only Mesh deform supported now.
Code changes:
- centralized deformation calls in curve_modifiers() mesh_modifiers()
etcetera. Here also other effects can be added like wave. Now the
evaluation order is fixed, but should become optional. It also doesnt
use the Displist anymore as deform-input. That latter part is unfinished
yet.
This code also is used for Hooks and will be needed for softbody
- made convention stricter that displists are being checked on in
drawobject(), this to prevent routines to make new displists recursively
(like armature does). Now a freedisplist() is sufficient to signal that
a new displaylist should be made.
2) Object Hooks
http://www.blender3d.org/cms/Object_Hooks.391.0.html
Support for Hooks is added to Mesh, Lattice, Curve and Surface objects.
For Armatures this would require some more work & research.
Main goal for this feature is to provide quick & simple access to the
underlying geometry in Objects on Object level, supporting hierarchies and
Ipos etc.
