[Bf-taskforce25] List of problems/bugs with 2.5 UI re aramture animation

[Joshua Leung]

Hi,

Great! A list of things to work on :)

On Fri, Jul 24, 2009 at 9:59 PM, Benoit Bolsee <benoit.bolsee at online.be>wrote:

> Hi,
>
> I am working on the itasc branch (2.5), previously the ge_dev branch
> (2.49) and I experience some difficulty/bugs with the 2.5 UI that slow
> down my development. The branch is about adding a new IK algorithm in
> Blender and adding specific support for IK in the game engine. I've been
> told that this is the best place to report these kind of problems to
> bring them to the attention of the UI experts.
>
> None of these problems existed when I was working on the 2.49 branch
> (when applicable). I've verified they are still there in the latest
> 21841 revision.
>
> 1) Add Primitive button is volatile
> - The Add Primitive button is not in the toolbar, only a few "Add ..."
> buttons but no Add Armature. I think Add Primitive should be there by
> default.
> - I can add an 'Add Primitive' button using the Add Tool button, but it
> is gone when I restart Blender. Is there a way to add buttons
> permenantly on this Tool Shelf (other then changing the py script in
> release/ui)?
> - Suppose I add the 'Add Primitive' in the tool shelf and add an
> armature. When going to pose mode, the button disappears although it is
> perfectly legal to add primitives in the pose mode. I have to add it
> again in pose mode to keep it available in both modes.
>
> 2) Context is volatile
> - I have an armature in Pose mode and a target object. I select a bone
> of the armature, then select the Bone context so that I can add a
> Constraint on the bone (actually on the pose channel).  Now if I select
> the target object the context moves to Object and when I select the
> armature again, the context remains on Object. Now I have to select the
> Bone context again to see the Constraint.  I would expect the context to
> return automatically to Bone when I select the Armature again.

No comment on the above issues. However, it does sound like these problems
could get annoying in practice.



> 3) Armature Rest Position check box in the skeleton panel doesn't work
> immediately
> - I have to change something else, like the target position to see the
> armature go in rest pose

I'm guessing this is just a case of some missing updates/refreshes
somewhere. I'll check on this now.


> 4) Changing the name of a Bone in pose mode ruins the pose channel
> - It's possible to change the name of a bone in Bone context when the
> armature is in pose mode but the change is not propagated to the pose
> channel => the constraint panel becomes empty (don't even show the Add
> Constraint button). Note that changing the bone name in edit mode works.

Sounds like the (scary) code for this hasn't been restored yet?


> 5) Set parent to Armature Deform ruins the vertex group
> - Making parent with CTL-P and selecting Armature Deform ruins the
> vertex group that I had previously created. The old 'vertex group'
> option menu is not there. It seems that the 'create vertex group' mode
> is enabled by default.


>
> 6) the Type button in Relation panel of object context behaves funny
> - This button seems to work but when I select Armature Deform (which
> doesn't destroy the vertex group btw), it displays Lattice.
> - Again, changing this button doesn't have an immediate effect on the 3D
> view, something else must change.

More neglected stuff?


> 7) changing a target position ruins the cache
> - Dragging the target of a pose channel constraint causes the point
> cache of the armature to be cleared. It ruins the simulation of the new
> IK solver, which uses a point cache to store the previous armature
> position (the new solver is stateful). Why is it necessary to clear the
> point cache when dragging an object? It wasn't the case in 2.4.

Err... what's this point cache you're referring to? If you're just referring
to the bone paths, then I'm restoring that tonight. But if it's some special
point-cache stuff implemented for the new IK solver, I think you'll have to
look into it yourself. (If it uses particles-type pointcache, then consult
jahka :)


> 8) Pose Constraint are not animatable
> - I've tried to add animation on the 'weight' field on an IK constraint
> but it doesn't work. Adding animation on object constraints works.

This should be an easy fix... (famous last words)
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