not mirrored exactly, though the problem is not completely solved.
The way local frames are computed for particles is still not fully
symmetric, which shows especially on long hairs...
Also made the shift+o subsurf switch work recursively into
dupli-groups, did only the first level before.
=========
- Normalize strand coordinates over the length of the strand, not
cut off when with e.g. length texture control.
- Weight paint and particle mode x-mirror now works with deformation
and shape keys active.
- X-ray is now disabled in particle mode, messed up depth tests.
used for clipping were being stored in the mesh, but modifiers
can result in two objects with the same mesh having a different
bounding box. Solution is to store bounding box in the object.
=========
- Texture orco coordinates for particles are now actual orcos instead
of just the vertex positions, which means they are the same under
deformations and the same as the ones on the mesh.
- Particle distribution now uses these orcos to get consistent
distributions independent of deformation.
- This required changing the way orco's are computed for meshes. Now
instead of generating an orco derivedmesh separately, the derivedmesh
is generated alongside the regular one and stored in an orco custom
data layer.
=========
Merge of the famous particle patch by Janne Karhu, a full rewrite
of the Blender particle system. This includes:
- Emitter, Hair and Reactor particle types.
- Newtonian, Keyed and Boids physics.
- Various particle visualisation and rendering types.
- Vertex group and texture control for various properties.
- Interpolated child particles from parents.
- Hair editing with combing, growing, cutting, .. .
- Explode modifier.
- Harmonic, Magnetic fields, and multiple falloff types.
.. and lots of other things, some more info is here:
http://wiki.blender.org/index.php/BlenderDev/Particles_Rewritehttp://wiki.blender.org/index.php/BlenderDev/Particles_Rewrite_Doc
The new particle system cannot be backwards compatible. Old particle
systems are being converted to the new system, but will require
tweaking to get them looking the same as before.
Point Cache
===========
The new system to replace manual baking, based on automatic caching
on disk. This is currently used by softbodies and the particle system.
See the Cache API section on:
http://wiki.blender.org/index.php/BlenderDev/PhysicsSprint
Documentation
=============
These new features still need good docs for the release logs, help
for this is appreciated.
====================
The MeshDeform modifier can deform a mesh with another 'cage' mesh.
It is similar to a lattice modifier, but instead of being restricted
to the regular grid layout of a lattice, the cage mesh can be modeled
to fit the mesh better.
http://www.blender.org/development/current-projects/changes-since-244/modifiers/
Implementation Notes:
- OpenNL has been refactored a bit to allow least squares matrices to
be built without passing the matrix row by row, but instead with
random access. MDef doesn't need this actually, but it's using this
version of OpenNL so I'm just committing it now.
- Mean value weights for polygons have been added to arithb.c, a type
of barycentric coordinates for polygons with >= 3 vertices. This
might be useful for other parts of blender too.
* Does not indicate that UV's exist, nor does it add UV's when used.
* Only accessible for texturepaint, vertexpaint and weightpaint from a button in the header (Paint Selection Mask)
* Not accessible from the mode menu, this is only an option that applies to paint modes.
This dosnt effect DNA, face select (G_FACESELECT) can be enabled at any time but is only used when paint modes are enabled.
Other changes
* UKey is uv unwrap in editmode, Ukey for undo was editmode only anyway.
* UVCalc in editmode adds a UV Layer if there is not one alredy.
* texture draw in editmode does not draw the face dots (they are get in the way of texturing)
* some missing updates were added.
* removed manipulator from when paint modes are enabled since the manipulator is not drawn in the 3d view.
=============================
- In textured drawmode it now draws the texture, with solid mode lighting.
- UVs and vertex colors for subsurf are not computed incremental yet, so
editing in textured drawmode then may not be as fast as the other modes.
Implementation Notes:
- Added textured drawing functions to the editmesh and subsurf derivedmeshes.
- Removed some unused, legacy subsurf code that directly used Mesh.
- Restructured texture drawing a bit to make it more clear and allow for
editmode drawing.
(Peach feature request)
===============================
An improved CrazySpace correction is now used for Armature modifiers that use
vertex groups, and that are the first enabled modifiers in the stack. This is
a a specific case, but also a common one.
http://www.blender.org/development/current-projects/changes-since-244/skinning/
Implementation Notes:
- The quaternion crazyspace correction is still used for modifiers other than
the armature modifier.
- Modifiers can now provide a deform matrix per vertex to be used for
crazyspace correction, only the armature modifier implements this now.
* Moved the multires vertex data from struct MultiresLevel to struct Multires. There's no longer any reason to store data seperately for each level; it was just taking up extra memory.
* Incremented the subversion to 2 and adjusted do_versions to correctly load older files.
* Refactored the multires update process (which handles propagating changes to other levels)
only deform modifiers in the stack. This was an old bug: a typo caused quad
face normals to be calculated using the same vertex twice, giving bad normals.
using mface->flag for both.
Also found that the cdDM_drawMappedFaces and cdDM_drawFacesTex_common could get normals mixed up when rendering hidden faces. because hidden/invisible faces used continue without advancing to the next normal.
- edges are generated from verse faces
- no support for lose edge!
- informations about edges aren't sent to verse server (other applications
can't share edges with blender)
- better sending/receiving vertex position
Fixed bug #6153, Blender Crash during rendering (internal) with object selected in edit mode.
* Added a render parameter to several of multires's functions. If render==true, multires won't push data onto the undo stack, and regular Mesh data is always used (as opposed to EditMesh data.)
Fixed bug #5799, Multires mesh modifications get reset by rendering
This bug can cause some nasty data loss (was introduces with my commit for using orco with multires.) Fixed by making sure to do multires_update_levels before applying modifiers.
Fixed bug #5756, Rendering artifacts when MRM is not set to maximum
Several changes were made:
* Added function multires_level_n to get the nth level from a multires mesh
* Removed the changes I made some time ago to init_render_mesh for multires meshes. Previously it was making a full copy of the mesh object in order to be able to apply deformations to the Pin level and propagate them to the Render level.
* Added two functions to DerivedMesh.c, multires_render_pin and multires_render_final. These two functions work together in the mesh_create_derived_*_render functions to apply all modifiers to the Pin level, then create the DerivedMesh from the Render level, and lastly restore the mesh to its original (undeformed) state.
* Added a check in multires_del_lower and multires_del_higher to ensure that level indices are properly clipped to the actual range of available levels.
Updated Python Mesh API to support UV and Color layers with names.
Similar to vertex group's
renamed a function in customdata.c CustomData_free_layers -> CustomData_free_layers_active and made CustomData_free_layers accept an index, this is needed so python could free layers that arnt active.
These can be created and deleted in the Mesh panel in the same place as
before. There is always one active UV and vertex color layer, that is
edited and displayed.
Important things to do:
- Render engine, material support
- Multires and NMesh now lose non active layers
Also CustomData changes to support muliple layers of the same type, and
changes to layer allocation, updated documentation is here:
http://mediawiki.blender.org/index.php/BlenderDev/BlenderArchitecture/CustomData
This commit upgrades the modifier stack to only calculate the data which is
needed, either by modifiers further down the stack or by other functions at
the end of the stack (e.g. drawing functions).
This speeds up modifier stack recalculation, especially where vertex
groups and UV coordinates are concerned. For example, a mesh with an Armature
modifier followed by a Subsurf modifier would previously have required the
Subsurf modifier to interpolate all the vertex groups in the mesh, slowing
down modifier calculations considerably. With this update, vertex group data
is not propagated beyond the Armature modifier, so calculations are faster.
Note that this depends on the order of modifiers in the stack. If the Armature
and Subsurf modifiers were swapped in the above example, the Subsurf modifier
would have to interpolate vertex groups, as they are needed by the Armature
modifier.
center, rotated according to face edges, and optionally with scale of the
face.
http://www.blender3d.org/cms/Face_Duplicator.828.0.html
Also: bugfix in undo/redo for relinking data to the UI. It was not checking
for Library data, accidentally linking non-library data with same names.
All data layers, including MVert/MEdge/MFace, are now managed as custom
data layers. The pointers like Mesh.mvert, Mesh.dvert or Mesh.mcol are
still used of course, but allocating, copying or freeing these arrays
should be done through the CustomData API.
Work in progress documentation on this is here:
http://mediawiki.blender.org/index.php/BlenderDev/BlenderArchitecture/CustomData
Replaced TFace by MTFace:
This is the same struct, except that it does not contain color, that now
always stays separated in MCol. This was not a good design decision to
begin with, and it is needed for adding multiple color layers later. Note
that this does mean older Blender versions will not be able to read UV
coordinates from the next release, due to an SDNA limitation.
Removed DispListMesh:
This now fully replaced by DerivedMesh. To provide access to arrays of
vertices, edges and faces, like DispListMesh does. The semantics of the
DerivedMesh.getVertArray() and similar functions were changed to return
a pointer to an array if one exists, or otherwise allocate a temporary
one. On releasing the DerivedMesh, this temporary array will be removed
automatically.
Removed ssDM and meshDM DerivedMesh backends:
The ssDM backend was for DispListMesh, so that became obsolete automatically.
The meshDM backend was replaced by the custom data backend, that now figures
out which layers need to be modified, and only duplicates those.
This changes code in many places, and overall removes 2514 lines of code.
So, there's a good chance this might break some stuff, although I've been
testing it for a few days now. The good news is, adding multiple color and
uv layers should now become easy.
now, others can be added later (sticky, shape keys). Beside one small fix
for knife exact vertex group interpolation, is intended to work the same
as before.
Also fixes bug #5200, related to editmode undo and vertex groups. And
corrects the editmode to faceselect mode selection conversion, that was
broken in a previous commit.
the CustomData module from the modifier stack rewrite, but with additions
to make it also usable in edit mode. Some of the datatypes from that
module were move to a DNA header file, they are not saved to file now, but
will be soon.
The only code that wasn't abstracted is the uv collapse / merging code. It
is rather complicated, will look into that in the future.
There should be no user level changes.
#4742 exported normals are now correct
#4821 & 4956 for complex movements in/outflows can now also
use the animated mesh option
- new features
* isosurface subdivision: directly
creates a finer surface mesh from the simulation data.
this increases simulation time and harddisk usage, though, so
be careful - usually values of 2-4 should be enough.
* fluidsim particles: extended model for particle
simulation and generation. When isosurface subdivision is enabled,
the particles are now included in the surface generation,
giving a better impression of a single connected surface.
Note - the particles are only included in the final surface
mesh, so the preview surface shows none of the particle
effects.
* particle loading: different types of particles can now be selected for
display: drops, floats and tracers. This is a bit obsolete
due to the extensions mentioned above, but might still be useful.
Floats are just particles floating on the fluid surface, could
be used for e.g. foam.
* moving objects impact factor: this is another tweaking option,
as the handling of moving objects is still not conserving
mass. setting this to zero simply deletes the fluid, 1 is
the default, while larger values cause a stronger
impact. For tweaking the simulation: if fluid disappears, try
increasing this value, and if too much is appearing reduce it.
You can even use negative values for some strange results :)
- more code cleanup, e.g. removed config file writing in fluidsim.c,
added additional safety checks for particles & fluidsim domains (these
currently dont work together). I also removed the "build particles"
debug message in effects.c (seemed to be unnecessary?).
Some more info on the new features:
Here are two test animations showing the difference between
using the particle generation with isosurface subdivision.
This is how it would look with the old solver version:
http://www10.informatik.uni-erlangen.de/~sinithue/blender/fluid6_fl6manc4_1noparts.mpg
and this with the new one:
http://www10.informatik.uni-erlangen.de/~sinithue/blender/fluid6_fl6manc4_2wparts.mpg
Both simulations use a resolution of 64, however, the version with particles
takes significantly longer (almost twice as long).
The .blend file for a similar setup can be found here:
http://www10.informatik.uni-erlangen.de/~sinithue/blender/fluid6_testmanc4.blend
(Minor Tips for this file: dont enable subdivions of characters until rendering,
thus leave off for simulation, as it uses the rendering settings! For making
nice pictures switch on subdivion, and OSA.)
And here's a picture of old vs. new (for webpage or so):
http://www10.informatik.uni-erlangen.de/~sinithue/blender/fluid6_manc4compare.png
When using a particle system in a dupli-group, and the group is in the
current scene but not visible, the particles are calculated on wrong
position. This is the recurring trouble with particle calculating... which
doesn't do despgraph stuff.
This commit fixes the error, but it will still display particles *once*
(one draw) on the wrong location. That's a lag in the system I cannot
solve quickly...
Note that this system does work OK when you put the group in another Scene,
or linked from another file. That's what it was coded for...
exactly the same as mesh_create_derived_render(ob) except it uses the view modifier settings.
Added an optional arg to getFromObject to 'render' so you can choose to get the mesh displayed in the 3d view or generate one with render settings.
Solved bug 4612 getFromObject now works with soft body meshes (error was caused by getting the derived mesh from a copy of the object)
removed workaround for softbody bug in object_apply_def.py
My commit to fix weightpaint display (revision 1.125 of DerivedMesh.c) broke
normal recalculation for meshes which have only deform modifiers applied.
This commit fixes that by adding calls to CDDM_calc_normals in the appropriate
places.
The DM_from_template and DM_init functions checked for numVerts > 0 before
initialising the DerivedMesh's custom data layers. This was something of a
hack intended to allow DerivedMesh creation functions to initialise default
function pointers without initialising custom data layers (by passing a 0 for
the numVerts parameter). It is unneeded now that DM_init_funcs is present, and
causes memory deallocation warnings later on when the number of vertices
really is 0, so it has been removed.
In a quick glance: (temp image)
http://www.blender.org/bf/rt.png
Main reason is that Lattices are useful a lot for Armature deformation.
Lattices just provide much more precise and interesting control. However,
with only bone envelopes it's very hard to use.
Working with Lattice vertex groups is nearly identical to Mesh:
- on CTRL+P 'make parent' you can choose the deform option now
- In editmode, the buttons to control vertex groups are available
- In outliner you can select vertexgroups too
- Deforming Lattices with Armatures has all options as for Mesh now.
Note:
- No WeightPaint has been added yet. To compensate, the editmode
drawing for a Lattice with vertex group shows weight values for the active
vertex group.
- Lattice editmode doesn't undo/redo weight editing yet.
- Softbody for Lattice still uses own vertex weights
Implementation notes:
- derivedmesh weight_to_rgb() is now exported to drawobject.c
- been doing cleanups in code (order of includes, var declarations, etc)
- weightpaint button handling now is generic
I've checked on Brecht's proposal for Custom Element data;
http://mediawiki.blender.org/index.php/BlenderDev/CustomElementData
It could have been used, but that would mean the existing code for
vertexgroup handling and armature deform couldn't be re-used. I guess this
is really a later todo.
geometry node
- merged patch from Ben Batt, subsurf modifier still doesn't work ...
I will add list of edges to VGeomData structure
- added some missing derivedmesh methods after merging of ben's gsoc
projects
data, due to the temporary "Weight-coloured" TFace data being replaced by
the original before displaying. This commit fixes that by changing the type
of DerivedMesh calculated by mesh_calc_modifiers when no non-deforming
modifiers are applied from MeshDerivedMesh (which depends on the original
Mesh) to CDDerivedMesh (which doesn't depend on the original Mesh).
of the fluidsim can now be disabled with the
flag: BF_NO_ELBEEM='true', e.g. for irix systems.
(The number of ifdefs from the original
patch was reduced, and the defines are now
only necessary when elbeem is switched off.)
- particle generation option is available again
