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[#32280] The limit Location constraint just applies to the world space

Date:
2012-08-07 23:09		 Priority:
3
State:
Closed
Submitted by:
Thomas Icefarmer (the6tsense) 		Assigned to:
Nobody (None)
Category:
Animation system		 Status:
Closed
Relates to:
Duplicates:
Patches:
 
Summary:
The limit Location constraint just applies to the world space
Detailed description
I don't know if whether I'm doing it wrong or it just doesn't work, but my cannon tube (see attached file) doesn't want to limit the local space. It just limits the world space. I reproduced it with a very simple setup (see second attached file). It seems like the local space wont pass correctly through an constraint. Hope you'll fix it soon.

Followup

Message
  • Date: 2012-08-08 16:41
  • Sender: Joshua Leung
  • Looks like you might be running into some kind of gimbal-lock issues here.

    As a workaround, you could try the following setup:
    1) Place an Empty at the same location as Cube.001
    2) Give the Empty the TrackTo constraint (pointing to Cube), and remove the
    3) Parent Cube.001 to the Empty (NOTE: do this while the constraint is disabled, so that they are both aligned in the same way)
  • Date: 2012-08-09 19:14
  • Sender: Thomas Icefarmer
  • Thanks for the nice workaround, it works pretty nice. Although I guess it isn't needed =) I found out that the Child-Of-Constraint (COC) makes a mess out of parenting... Having the Limit-Location-Constraint (LLC) above the COC limits to the local space (no matter which space is selected). Having the LLC at the bottom limits the world space (no matter which space is selected). It might be because I think of the COC as a normal parent-child-relation and don't understand some things that are different between those two, but I don't guess it's 100% working right.
  • Date: 2012-08-09 23:20
  • Sender: Tobias Oelgarte
  • The Child-Of Constraint has this kind of bugs for a long time already. There are many open bugs considering this constraint inside the tracker. Somehow it leads to the situation that children are evaluated in the wrong space.
  • Date: 2012-10-19 18:30
  • Sender: Ton Roosendaal
  • Yep the child-of constraint is very limited, and works only for well controlled situations like hands picking up stuff or so.
 

Attached Files:

Name Date Download
Bugtrack.blend 2012-08-07 23:09 Download

Changes:

Field Old Value Date By
StatusInvestigate2012-10-19 18:30ton
status_idOpen2012-10-19 18:30ton
close_dateNone2012-10-19 18:30ton
StatusNew2012-08-08 16:41aligorith
File Added21683: Bugtrack.blend2012-08-07 23:09the6tsense