IK constraint desactivation does not work as expected #37894

New Issue

Séverin Lemaignan · 2013-12-20T11:31:09+01:00

2013-12-20 11:31:09 +01:00

We control armatures (BL_ArmatureObject) in the GameEngine both via its channels (directly setting rotations on bones) and via IK targets (through a BL_ArmatureConstraint of type CONSTRAINT_TYPE_KINEMATIC + CONSTRAINT_IK_COPYPOSE.

Without adding the IK constraint, the control of the armature via channels works well. As soon as the constraint is added (and EVEN with BL_ArmatureConstraint.active = False), it becomes impossible to control the armature via channels.

This issue may be related to issue #37892

We control armatures (BL_ArmatureObject) in the GameEngine both via its channels (directly setting rotations on bones) and via IK targets (through a BL_ArmatureConstraint of type CONSTRAINT_TYPE_KINEMATIC + CONSTRAINT_IK_COPYPOSE. Without adding the IK constraint, the control of the armature via channels works well. As soon as the constraint is added (and EVEN with BL_ArmatureConstraint.active = False), it becomes impossible to control the armature via channels. This issue may be related to issue #37892

Séverin Lemaignan commented

2013-12-20 11:31:09 +01:00

Changed status to: 'Open'

Séverin Lemaignan commented

2013-12-20 11:31:09 +01:00

Added subscriber: @skadge

Séverin Lemaignan commented

2013-12-20 13:18:40 +01:00

After further investigation, this issue occurs only with the iTaSC IK solver. @BenoitBolsee, could you have a look?

Séverin Lemaignan commented

2013-12-20 13:28:03 +01:00

Bug found:
At [line 384 of itasc_solver.cpp ]], a check must be added for CONSTRAINT_OFF besides CONSTRAINT_DISABLE (similar to what is done in [ http:*developer.blender.org/diffusion/B/browse/master/source/blender/ikplugin/intern/iksolver_plugin.c;48b96805789958318938f9032ae89d1f947c2811$73 | iksolver_plugin.c ).

Bug found: At [line 384 of `itasc_solver.cpp` ]], a check must be added for `CONSTRAINT_OFF` besides `CONSTRAINT_DISABLE` (similar to what is done in [[ http:*developer.blender.org/diffusion/B/browse/master/source/blender/ikplugin/intern/iksolver_plugin.c;48b96805789958318938f9032ae89d1f947c2811$73 | `iksolver_plugin.c` ](http:*developer.blender.org/diffusion/B/browse/master/source/blender/ikplugin/intern/itasc_plugin.cpp;48b96805789958318938f9032ae89d1f947c2811$384)).

Benoit Bolsee was assigned by Dalai Felinto

2014-01-14 17:46:50 +01:00

Dalai Felinto commented

2014-01-14 17:46:50 +01:00

Added subscribers: @BenoitBolsee, @dfelinto

Dalai Felinto commented

2014-01-14 17:46:50 +01:00

pushed the suggested fix at 8a8ee2c
Thanks for the contribution (you may want to send a patch next time, if you know how to do it)

@BenoitBolsee you may want to review it, though it seems correct

pushed the suggested fix at 8a8ee2c Thanks for the contribution (you may want to send a patch next time, if you know how to do it) @BenoitBolsee you may want to review it, though it seems correct

Dalai Felinto commented

2014-01-14 17:47:28 +01:00

Changed status from 'Open' to: 'Resolved'

Dalai Felinto closed this issue

2014-01-14 17:47:28 +01:00

Dalai Felinto commented

2014-01-14 17:47:28 +01:00

closing the task

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IK constraint desactivation does not work as expected #37894