torso rig, Maya

1. create joints.
bottom > between legs > belly > belly2 > chest > shoulder > neck > head > top
2. create SplineIK.
neck > btw legs
3. create clusters to control spine bend.
- select top vetice of spineIK curve
- Deform > create Cluster
- move clusterHandleShape off Z .
- snap clusters' pivot point to corresponding joints.
- parent the clusters to bottom joint
- connect hip joint to two leg joints.
4. add control curve to each cluster.
- create wire cube and attach it to chest c by point constraint.
- create the same kind of cube and attach it to hip c by point constraint.
- create star out of circle curve and attach it to hip c
- create circle curve and attach it to belly C.
- create double-sided arrow curve and attach it to shoulder C by point constraint.
- create