=========
- Fix for bug #7840: adding particle system to nurbs, curves crashes.
Now simply doesn't allow to add a particle system to a non-mesh
object, the current code does not support it.
- Fix for bug #7834: deleting vertices of an object with a particle
system crashes. Fixed by disabling particle display for objects in
editmode.
- Fix for the particle add brush on subsurfed objects.
=========
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.
Patch by: Roland Hess (harkyman)
For example, a constraint can be sub-targeted at the 50% (or 31.2% or 85% etc.) point of its target bone, giving you enormous rigging flexibility and removing the need for complex contraptions to do such things as:
- A bone whose base slides only between to points on a rig (CopyLoc with a variable, animated subtarget point)
- Bones that attach to multiple points along another bone (CopyLocs, each with a different head/tail percentage)
- Bones that need to stretch to a point midway between specific spots on two other bones (old way: too crazy to mention; new way: stretch bone between points on end bones, then another stretch to the midpoint of the first stretch)
It is only used for the constraint types for which it is relevant: CopyLoc, TrackTo, StretchTo and MinMax, TrackTo, and Floor.
Notes:
- This is accessed by the Head/Tail number-slider.
- This value can be animated per constraint
- The old "Copy Bone Tail" option for the CopyLoc constraint has been automatically converted to 1.0 Head/Bone values for the affected constraints
- In the code, this value is in the bConstraint struct, so it is available for all constraints, even though only a few implement it.
Now the Copy Scale Constraint also has the Offset functionality that Copy Loc/Rot have.
== Copy Rotation Constraint ==
Also, fixed the tooltip for the CopyRot Offset button.
Note: when working with pose-bones, and using offset, setting both owner+target spaces to pose-space should cancel any unwanted rotations visible.
Copy Rotation constraint now has ability for the owner's rotation to be added on top of the copied rotation (i.e. an 'offset' like for the Copy Location constraint).
* Fixed crash that occurs when using an unknown constraint type or a Null constraint - missing NULL check
* ClampTo constraint now draws ok again
* Null constraints now get drawn in the stack again
I've finally traced down the causes of several of the bugs which caused PyConstraints to work incorrectly (or not at all).
* Freeing is now done using BLI_freelistN inside the pycon_free function, instead of looping through the targets ourselves. This fixes all of those Memblock free: pointer not in list errors.
* BPY_pyconstraint_update now correctly creates/frees the constraint's targets as needed. Previously, it was creating/removing the wrong number of targets. Also, pyconstraints no longer get disabled when using armatures (not bones)
* The panel drawing was also not working right, as there were still some offset issues.
* Removed the old get_con_subtarget_name function and fixed the places that used it. This was only suitable for single-target constraints.
* PyConstraints interface drawing should now no longer draw multiple-target fields on top of each other
* Removed double call to BPY_pyconstraint_update when the Update button was clicked. I found this while debugging why PyConstraints didn't seem to be working yet...
Once again, I've recoded the constraints system. This time, the goals were:
* To make it more future-proof by 'modernising' the coding style. The long functions filled with switch statements, have given way to function-pointers with smaller functions for specific purposes.
* To make it support constraints which use multiple targets more readily that it did. In the past, it was assumed that constraints could only have at most one target.
As a result, a lot of code has been shuffled around, and modified. Also, the subversion number has been bumped up.
Known issues:
* PyConstraints, which were the main motivation for supporting multiple-targets, are currently broken. There are some bimport() error that keeps causing problems. I've also temporarily removed the doDriver support, although it may return in another form soon.
* Constraints BPy-API is currently has a few features which currently don't work yet
* Outliner currently only displays the names of the constraints instead of the fancy subtarget/target/constraint-name display it used to do. What gets displayed here needs further investigation, as the old way was certainly not that great (and is not compatible with the new system too)
Now there's an option for the owner to follow the path of the target cyclically. Previously, if the owner moved past the extents of the side of the bounding-box used for the calculations, the object was placed on the curve at the nearest extent.
This option is only really useful if the curve itself is cyclic, although you can still use it otherwise. To enable, just turn on the cyclic option.
this is mainly because adding pose keyframes recalculates every handle so importing became increasingly slow.
added a 'fast' argument to insertkey that python api's insertPoseKey can make use of since it alredy accepts a 'fast' option.
The ~4450 frame, 31 bone BVH imports in ~108sec now
Seperated editmode switch statement in space.c's event handling,
if editmode is disabled, or the images is a render or composite, UV editing operations are ignored.
In previous releases it has given an annoying warning if selecting or scaling is attempted when out of UV/Face mode.
Now it is possible to do Copy+Paste in the Action Editor, like in the IPO Editor. There are two new buttons in the Action Editor header for this, using the familiar icons.
* To copy...
Select the keyframes you wish to copy, and the channels that they occur in (except for ShapeKey mode, where it is not possible to select channels). Click copy button.
* To paste...
Place the current frame where you want the first of the keyframes from the buffer is to be pasted. Select all channels you wish the keyframes to be pasted into. Click paste button.
Currently, keyframes are only pasted into 'compatible' curves (i.e. LocX keyframes can only go to LocX, and so on). This may change after user feedback, if this is found to be too restrictive.
== Code Changes ==
I've made a few changes which allow this code to be nicer.
* renamed insert_vert_ipo to insert_vert_icu, as that represents its actual purpose better (and changed all occurrences I could find)
* created a new function, insert_bezt_icu, which does the actual inserting of provided BezTriple data to a given IpoCurve
* recoded insert_vert_icu to use this new function, and also the IPO-Editor keyframe pasting (i.e. pasting in Editmode)
* Grouped Up/Down buttons in constraint panel headers, and fixed their tooltips
* Removed unused variable from action editor code
* Minor formatting in constraint.c
It is now possible to use the geometry of Meshes and/or Lattices as the target of a constraint. All you need to do, is to create a new Vertex-Group and assign all the points that you wish to use as the target, then type that name into the VG: field for the relevant constraints.
One of the cases where this is beneficial is when you need to copy the location of a vertex. Now you don't need to make extra vertex-parents for that.
Additional Notes:
* The code takes the average of the locations of the nominated vertices, and puts that in world-space for constraint solving (and regular space-conversion stuff).
* Currently, rotation and scaling of points is not taken into account. The rotation/scaling used is from the object's matrix. Hopefully, this will only be a temporary problem (will be fixed soon)
* Swapped the order of the CSpace menus. This is so that it makes more sense with the Transform Constraint, to follow a source (target) -> destination (owner) flow.
* 'Local Space' option for Objects has been renamed 'Local (Without Parent) Space'
* Transform Constraint should now work in more cases. Somehow the old code (for location case) wasn't working correctly.
* ChildOf Constraint applied on objects, should now get the right 'inverse'/'offset' matrix set. It now uses the same code that is used by Blender's parenting method to do so.
This commit adds a new constraint to Blender: the Transformation Constraint. This constraint gives you more freedom to choose how transforms are copied from one object/bone to another object/bone.
You can assign the Loc/Rot/Scale channels of a source to the Loc/Rot/Scale channels of a destination, specifying the range of motion (per axis) from the source to consider, and the range of motion (per axis) that will be applied to the destination. Also, for each destination axis, you can choose which of the source axes to copy from.
A similar constraint was coded by Jason Blary (snark), as Patch #4991. This constraint is basically rewritten from scratch, although there are some elements of the original patch which may be borrowed in future.
Various notes:
* PyAPI access has been coded.
* Space conversion is also enabled for this constraint.
* Also the useless get_constraint_col function has been removed
* Doing a rotation copy with a ratio that is not 1:1 doesn't always work correctly yet (like for the Copy Rotation constraint).
Note: Visual Studio projectfiles and other buildsystems need to add extern/bullet2/src/BulletDynamics/ConstraintSolver/btConeTwistConstraint.cpp to the project!
* Removed obsolete comments from constraints code
* ChildOf constraint buttons: Set/Clear Inverse are now Set/Clear Offset. Hopefully that makes it a bit clearer for users.
After just over a week of coding, I've finished doing a major refactor/cleanup of the constraints code. In the process, quite a few old kludges and ugly hacks have been removed. Also, some new features which will greatly benefit riggers have been implemented.
=== What's New ===
* The long-awaited ``ChildOf Constraint'':
This allows you to animate parent influences, and choose which transformation channels the parent affects the child on (i.e. no translation/rotation/scaling). It should be noted that disabling some combinations may not totally work as expected. Also, the 'Set Inverse' and 'Clear Inverse' buttons at the bottom of this constraint's panel set/clear the inverse correction for the parent's effects. Use these to make the owner not stick/be glued to the parent.
* Constraint/Target Evaluation Spaces:
In some constraints, there are now 1-2 combo boxes at the bottom of their panel, which allows you to pick which `co-ordinate space' they are evaluated in. This is much more flexible than the old 'local' options for bones only were.
* Action Constraint - Loc/Rot/Size Inputs
The Action Constraint can finally use the target's location/rotation/scaling transforms as input, to control the owner of the constraint. This should work much more reliably than it used to. The target evaluation should now also be more accurate due to the new space conversion stuff.
* Transform - No longer in Crazy Space (TM)
Transforming objects/bones with constraints applied should no longer occur in Crazy Space. They are now correctly inverse-corrected. This also applies to old-style object tracking.
=== General Code Changes ===
* solve_constraints is now in constraints.c. I've removed the old `blend consecutive constraints of same type' junk, which made the code more complex than it needed to be.
* evaluate_constraint is now only passed the constraint, and two matrices. A few unused variables have been removed from here.
* A tempolary struct, bConstraintOb, is now passed to solve_constraints instead of relying on an ugly, static workobject in some cases. This works much better.
* Made the formatting of constraint code consistent
* There's a version patch for older files so that constraint settings are correctly converted to the new system. This is currently done for MajorVersion <= 244, and SubVersion < 3. I've bumped up the subversion to 3 for this purpose. However, with the imminent 2.45 release, this may need to be adjusted accordingly.
* LocEulSizeToMat4 and LocQuatSizeToMat4 now work in the order Size, Rot, Location. I've also added a few other math functions.
* Mat4BlendMat4 is now in arithb. I've modified it's method slightly, to use other arithb functions, instead of its crazy blending scheme.
* Moved some of the RigidBodyJoint constraint's code out of blenkernel, and into src. It shouldn't be setting its target in its data initialisation function based + accessing scene stuff where it was doing so.
=== Future Work ===
* Geometry to act as targets for constraints. A space has been reserved for this already.
* Tidy up UI buttons of constraints
At last! The ability to code constraints in Python. This opens up many interesting rigging possibilities, as well as making prototyping constraints easier.
* A PyConstraint script must begin with the line
#BPYCONSTRAINT
* It must also define a doConstraint function, which performs the core actions of the constraint.
* PyConstraints use IDProperties to store custom properties for each PyConstraint instance. The scripter can choose which of these ID-Properties to expose to a user to control the behaviour of the constraint. This must be done using the Draw.PupBlock method.
Credits to Joe Eager (joeedh) for coding the original patch on which this is based. I've made heavy revisions to large parts of the patch.
For more detailed information, and some demo scripts, see the following page:
http://aligorith.googlepages.com/pyconstraints2
The good news; previously written 64 bits are still valid! All fixes
appeared to be possible in code, no versioning patches needed. :)
That also removes the I AM STUPID 64 bits ban from the code.
The bad news:
I couldn't get a 64 bits Blender running here (ghost-mac issues... it
has to be recoded using Quartz to be able to run 64 bits). So what I
have tested was:
32 bits binary:
- Appending/linking data from 64 bits file.
- Reading 64 bits chained library-linked files (file -> file -> etc)
- Linking 32 bits files with 64 bits files
This has to be tested for 64 bits too. Will drop in IRC now to help.
Note: part 3 is fixing memory issues for addressing > 4 GB data. A first
start has been made for a blenlib API function.
Checked every instance of testbase to see this dosnt break anything, also changed TESTBASE and TESTBASELIB, both were used incorrectly in places.
added error_libdata() for library error messages that are everywhere.
added object_data_is_libdata to test if the object and its data's are from a library.
fixed 2 crashs in adding Curve points to a library object (remember to check, verify_ipocurve returns NULL!)
made duplicating and making dupli's real for lib objects possible, disabled joining into lib armatures and meshes.
Added checks to the following areas
* half the material buttons
* multires, shapekeys, vert groups
* renaming a linked Object in the links could loose the object on next reload.
Made center functions check for library data as well as changing
the way it works.
Rather then centering all objects in the selection and stopping if it finds libdata, or a multiuser mesh.
It centers all that it can, and reports any objects that didnt center and why.
some were 18, most 19, and others 21. made all 21 since this is the real limit.
Also new image name limit length of input field to 21 (was 255 but shortened to 21)
The one place this could be useful is if somebody names a metaball with a 21 char name, the copy will not use the motherball.
but this is not as bad as having to use the python console for fixing library linking problems.
This (new) constraint limits the location of an object/bone to the range of locations
on a given curve. It works by comparing the location of the owner on one axis, to
the extents of the curve's bounding-box on the same axis, to find the location on
the curve.
Usage Notes:
* 'Ob:' field must point to a valid curve object
* This curve should have 'Path' turned on in order for this constraint to work. You
don't really need to do this as it will be taken care of by the code.
* 'Auto' toggle automically determines which axis should be used for the distance estimations/calculations. It is the default option, but may not work that well for
some cases.
* X/Y/Z toggles can be used to select the axis to use for these calculations. Try
to choose the axis along which the curve stretches out for most.
Python Notes:
Python API access for this constraint is not included in this commit. Will be coming
soon.
Patch by Juho Vepsäläinen (bebraw)
[ #5850 ] Inverted axis' buttons to Copy Rotation and Copy Location constraints
This patch adds the options to invert the value being copied from each axis of the Copy Rot/Copy Loc constraints.
This commit also includes some slight code sanitization and tool tips cleanup (for the two track constraints, the tool tips were really unuseful).
