rigging a 2 way spline

[nuternativ]

that sounds like it gets double transformation. But, one thing I wonder is, how the blendWeight took place in your situation? Normallly, if I parent constraint anyting over to something that has already been constrainted, another weight will just appear in the parent constraint node so I can adjust them both.

for the back i have 3 ctrls. top, middle, bottom

The top control is parent constraint to the bottom ctrl and the main ctrl. allow you to switch between following the bottom of the spline or the master ctrl that control the whole character position.

The middle control is always be the one I put in between the two top and bottom by parent constraint it to both having equal weight so it sits right in the middle of the two.

The bottom control parent to the root ctrl(the one control the root of the skeleton which is right above the hip) and the master control. So, you can choose the bottom ctrl to follow the root control(which is control the whole body shape, including the hip.) or just stays where it is and just follow the main position of the character.

hope this helps, excuse my english.

[debalinadg]

hey! if u need all the spine controls to follow when your character is waking on all fours u, might need to constrain the pelvis control to the chest to.. and in a normal case u want the chest to follow the pelvis..if am not wrong.

i hope it will help you.u just have to constrain the pelvis to the chest control and again vice versa and need to switch between the constrains. u just need to play with the constraints...

parent constrain the chest control to the pelvis control and also constrain the pelvis control to the chest.
so wen u want the pelvis to follow the chest just turn off the constrain weight on the chest control...the pelvis will follow the chest. and when u want the chest to follow the pelvis , turn off the constrain weight on the pelvis.

The best option would be to create a switch for that. just keep swapping the constraints. i hope this will help.

[mattshaka]

thanks for both replying so quick didnt expect as quick response. anyways havent tried them yet as im weighting my bap character at the moment. but il try these methods soon as im done. havent weighted characters for a while so getting back into the swing of it.

I think i tried your method debalin already in a seperate scene, with 3 shapes as a test. cube for the top ctrl triangle for the middle and torus for the bottom and constrained them vs versa and turned of the corresponding blendweight for which end i wanted to be in control. so for example id turn off the blend weight on the top and turn on the middle and bottom one so they follow the top but when i animate the top the middle follows and the bottom. but everytime i try position and animate the bottom somewhere else it snaps back to the postion it was in. difficult to describe i may have to post a video on my blog and link you to it if i cant solve the problem soon

anyways thanks again guys il try out both methods and get back to you asap on result.

cheers mb

[mattshaka]

hey guys so i tried out the techniques that you guys mentioned but still got the snapping problem, i think im either doing it wrong or it just doesn't work with the spine ive made. I think it maybe because ive made a reverse spine. thanks for the advice anyways guys, il try come back to the rig when i get some more time. cheers matt b

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